mirror of https://gitee.com/openkylin/linux.git
2178 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Chuck Lever
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a5cda73e49 |
SUNRPC: Restructure svc_tcp_recv_record()
Refactor: svc_recvfrom() is going to be converted to read into bio_vecs in a moment. Unhook the only other caller, svc_tcp_recv_record(), which just wants to read the 4-byte stream record marker into a kvec. While we're in the area, streamline this helper by straight-lining the hot path, replace dprintk call sites with tracepoints, and reduce the number of atomic bit operations in this path. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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b4af59328c |
SUNRPC: Trace server-side rpcbind registration events
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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a0469f46fa |
SUNRPC: Replace dprintk call sites in TCP state change callouts
Report TCP socket state changes and accept failures via tracepoints, replacing dprintk() call sites. No tracepoint is added in svc_tcp_listen_data_ready. There's no information available there that isn't also reported by the svcsock_new_socket and the accept failure tracepoints. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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998024dee1 |
SUNRPC: Add more svcsock tracepoints
In addition to tracing recently-updated socket sendto events, this commit adds a trace event class that can be used for additional svcsock-related tracepoints in subsequent patches. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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11bbb0f76e |
SUNRPC: Trace a few more generic svc_xprt events
In lieu of dprintks or tracepoints in each individual transport implementation, introduce tracepoints in the generic part of the RPC layer. These typically fire for connection lifetime events, so shouldn't contribute a lot of noise. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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4b8f380e46 |
SUNRPC: Tracepoint to record errors in svc_xpo_create()
Capture transport creation failures. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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e3e67621e3 |
SUNRPC: Remove kernel memory address from svc_xprt tracepoints
Clean up: The xprt=%p was meant to distinguish events from different transports, but the addr=%s does that just as well and does not expose kernel memory addresses. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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e979a173a0 |
svcrdma: Add tracepoints to report ->xpo_accept failures
Failure to accept a connection is typically due to a problem specific to a transport type. Also, ->xpo_accept returns NULL on error rather than reporting a specific problem. So, add failure-specific tracepoints in svc_rdma_accept(). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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27ce629444 |
svcrdma: Rename tracepoints that record header decoding errors
Clean up: Use a consistent naming convention so that these trace points can be enabled quickly via a glob. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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dbc17acd5d |
svcrdma: trace undersized Write chunks
Clean up: Replace a dprintk call site. This is the last remaining dprintk call site in svc_rdma_rw.c, so remove dprintk infrastructure as well. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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9d20063892 |
svcrdma: Trace page overruns when constructing RDMA Reads
Clean up: Replace a dprintk call site with a tracepoint. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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f4e53e1ce3 |
svcrdma: Clean up handling of get_rw_ctx errors
Clean up: Replace two dprintk call sites with a tracepoint. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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2abfbe7e3a |
svcrdma: Clean up the tracing for rw_ctx_init errors
- De-duplicate code - Rename the tracepoint with "_err" to allow enabling via glob - Report the sg_cnt for the failing rw_ctx - Fix a dumb signage issue Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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David S. Miller
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da07f52d3c |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Move the bpf verifier trace check into the new switch statement in HEAD. Resolve the overlapping changes in hinic, where bug fixes overlap the addition of VF support. Signed-off-by: David S. Miller <davem@davemloft.net> |
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Chao Yu
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9c1223845a |
f2fs: add compressed/gc data read IO stat
in order to account data read IOs more accurately. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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Jaegeuk Kim
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b4b10061ef |
f2fs: refactor resize_fs to avoid meta updates in progress
Sahitya raised an issue: - prevent meta updates while checkpoint is in progress allocate_segment_for_resize() can cause metapage updates if it requires to change the current node/data segments for resizing. Stop these meta updates when there is a checkpoint already in progress to prevent inconsistent CP data. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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Chao Yu
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6d92b20103 |
f2fs: compress: support lzo-rle compress algorithm
LZO-RLE extension (run length encoding) was introduced to improve performance of LZO algorithm in scenario of data contains many zeros, zram has changed to use this extended algorithm by default, this patch adds to support this algorithm extension, to enable this extension, it needs to enable F2FS_FS_LZO and F2FS_FS_LZORLE config, and specifies "compress_algorithm=lzo-rle" mountoption. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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David Howells
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c410bf0193 |
rxrpc: Fix the excessive initial retransmission timeout
rxrpc currently uses a fixed 4s retransmission timeout until the RTT is
sufficiently sampled. This can cause problems with some fileservers with
calls to the cache manager in the afs filesystem being dropped from the
fileserver because a packet goes missing and the retransmission timeout is
greater than the call expiry timeout.
Fix this by:
(1) Copying the RTT/RTO calculation code from Linux's TCP implementation
and altering it to fit rxrpc.
(2) Altering the various users of the RTT to make use of the new SRTT
value.
(3) Replacing the use of rxrpc_resend_timeout to use the calculated RTO
value instead (which is needed in jiffies), along with a backoff.
Notes:
(1) rxrpc provides RTT samples by matching the serial numbers on outgoing
DATA packets that have the RXRPC_REQUEST_ACK set and PING ACK packets
against the reference serial number in incoming REQUESTED ACK and
PING-RESPONSE ACK packets.
(2) Each packet that is transmitted on an rxrpc connection gets a new
per-connection serial number, even for retransmissions, so an ACK can
be cross-referenced to a specific trigger packet. This allows RTT
information to be drawn from retransmitted DATA packets also.
(3) rxrpc maintains the RTT/RTO state on the rxrpc_peer record rather than
on an rxrpc_call because many RPC calls won't live long enough to
generate more than one sample.
(4) The calculated SRTT value is in units of 8ths of a microsecond rather
than nanoseconds.
The (S)RTT and RTO values are displayed in /proc/net/rxrpc/peers.
Fixes:
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Linus Torvalds
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0a85ed6e7f |
block-5.7-2020-05-09
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Yufen Yu
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d51cfc53ad |
bdi: use bdi_dev_name() to get device name
Use the common interface bdi_dev_name() to get device name. Signed-off-by: Yufen Yu <yuyufen@huawei.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Add missing <linux/backing-dev.h> include BFQ Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Linus Torvalds
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192ffb7515 |
This includes the following tracing fixes:
- Fix bootconfig causing kernels to fail with CONFIG_BLK_DEV_RAM enabled
- Fix allocation leaks in bootconfig tool
- Fix a double initialization of a variable
- Fix API bootconfig usage from kprobe boot time events
- Reject NULL location for kprobes
- Fix crash caused by preempt delay module not cleaning up kthread
correctly
- Add vmalloc_sync_mappings() to prevent x86_64 page faults from
recursively faulting from tracing page faults
- Fix comment in gpu/trace kerneldoc header
- Fix documentation of how to create a trace event class
- Make the local tracing_snapshot_instance_cond() function static
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Merge tag 'trace-v5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix bootconfig causing kernels to fail with CONFIG_BLK_DEV_RAM
enabled
- Fix allocation leaks in bootconfig tool
- Fix a double initialization of a variable
- Fix API bootconfig usage from kprobe boot time events
- Reject NULL location for kprobes
- Fix crash caused by preempt delay module not cleaning up kthread
correctly
- Add vmalloc_sync_mappings() to prevent x86_64 page faults from
recursively faulting from tracing page faults
- Fix comment in gpu/trace kerneldoc header
- Fix documentation of how to create a trace event class
- Make the local tracing_snapshot_instance_cond() function static
* tag 'trace-v5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tools/bootconfig: Fix resource leak in apply_xbc()
tracing: Make tracing_snapshot_instance_cond() static
tracing: Fix doc mistakes in trace sample
gpu/trace: Minor comment updates for gpu_mem_total tracepoint
tracing: Add a vmalloc_sync_mappings() for safe measure
tracing: Wait for preempt irq delay thread to finish
tracing/kprobes: Reject new event if loc is NULL
tracing/boottime: Fix kprobe event API usage
tracing/kprobes: Fix a double initialization typo
bootconfig: Fix to remove bootconfig data from initrd while boot
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Yiwei Zhang
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386c82a703 |
gpu/trace: Minor comment updates for gpu_mem_total tracepoint
This change updates the improper comment for the 'size' attribute in the tracepoint definition. Most gfx drivers pre-fault in physical pages instead of making virtual allocations. So we drop the 'Virtual' keyword here and leave this to the implementations. Link: http://lkml.kernel.org/r/20200428220825.169606-1-zzyiwei@google.com Signed-off-by: Yiwei Zhang <zzyiwei@google.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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David S. Miller
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3793faad7b |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Conflicts were all overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linus Torvalds
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29a47f456d |
NFS client bugfixes for Linux 5.7
Highlights include:
Stable fixes
- fix handling of backchannel binding in BIND_CONN_TO_SESSION
Bugfixes
- Fix a credential use-after-free issue in pnfs_roc()
- Fix potential posix_acl refcnt leak in nfs3_set_acl
- defer slow parts of rpc_free_client() to a workqueue
- Fix an Oopsable race in __nfs_list_for_each_server()
- Fix trace point use-after-free race
- Regression: the RDMA client no longer responds to server disconnect requests
- Fix return values of xdr_stream_encode_item_{present, absent}
- _pnfs_return_layout() must always wait for layoutreturn completion
Cleanups
- Remove unreachable error conditions
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Merge tag 'nfs-for-5.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
"Highlights include:
Stable fixes:
- fix handling of backchannel binding in BIND_CONN_TO_SESSION
Bugfixes:
- Fix a credential use-after-free issue in pnfs_roc()
- Fix potential posix_acl refcnt leak in nfs3_set_acl
- defer slow parts of rpc_free_client() to a workqueue
- Fix an Oopsable race in __nfs_list_for_each_server()
- Fix trace point use-after-free race
- Regression: the RDMA client no longer responds to server disconnect
requests
- Fix return values of xdr_stream_encode_item_{present, absent}
- _pnfs_return_layout() must always wait for layoutreturn completion
Cleanups:
- Remove unreachable error conditions"
* tag 'nfs-for-5.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: Fix a race in __nfs_list_for_each_server()
NFSv4.1: fix handling of backchannel binding in BIND_CONN_TO_SESSION
SUNRPC: defer slow parts of rpc_free_client() to a workqueue.
NFSv4: Remove unreachable error condition due to rpc_run_task()
SUNRPC: Remove unreachable error condition
xprtrdma: Fix use of xdr_stream_encode_item_{present, absent}
xprtrdma: Fix trace point use-after-free race
xprtrdma: Restore wake-up-all to rpcrdma_cm_event_handler()
nfs: Fix potential posix_acl refcnt leak in nfs3_set_acl
NFS/pnfs: Fix a credential use-after-free issue in pnfs_roc()
NFS/pnfs: Ensure that _pnfs_return_layout() waits for layoutreturn completion
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David S. Miller
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d483389678 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Simple overlapping changes to linux/vermagic.h Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linus Torvalds
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3d29cb17ba |
block-5.7-2020-04-24
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Merge tag 'block-5.7-2020-04-24' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few fixes/changes that should go into this release:
- null_blk zoned fixes (Damien)
- blkdev_close() sync improvement (Douglas)
- Fix regression in blk-iocost that impacted (at least) systemtap
(Waiman)
- Comment fix, header removal (Zhiqiang, Jianpeng)"
* tag 'block-5.7-2020-04-24' of git://git.kernel.dk/linux-block:
null_blk: Cleanup zoned device initialization
null_blk: Fix zoned command handling
block: remove unused header
blk-iocost: Fix error on iocost_ioc_vrate_adj
bdev: Reduce time holding bd_mutex in sync in blkdev_close()
buffer: remove useless comment and WB_REASON_FREE_MORE_MEM, reason.
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Linus Torvalds
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1ddd873948 |
Fixes:
- Address several use-after-free and memory leak bugs - Prevent a backchannel livelock -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABAgAGBQJemdwYAAoJEDNqszNvZn+XU1oQAKOm9vypO6w252kXdhFSxAlB 3tMxXALNDrFP3PXsKCa/sKKMRvkUkx+9pdnTuXDPvffd3ZgyB8DzJilryEtiqT4Y JsuoWHg2QyNeKUFGmtZ5AsefPaR8WL/aiYPTi1PUqnq4rNPjAgOGgLUv+LME2jFU Yx773d5CNHXDq6zv1Au0128URnQZDy/7URdfgX1FhLA8aQWjiG08fhBEGncXjV/X mo3RMCwE2uzNRruW7OJyCehb8d+IKBDZ0LEeZDW/ve4hNtL+Ke5eCEoemYtUN07e U3gRMB8Pt+55L+ZFP8KJYOtfRx2SkOTMcbASC2z/WECq5vumGmn4WovSSVJFGIUN 5WVf8ADM2w3RmTFh11Jl5mZnziGRNY/4hAW7PrR4ZDhJxjdKA+iLLd7571kkCE63 II6qxw/WV7Yz3T6v4BoOcDf1DOylnS1JXqmPGYia2aAhyFZgRVasOVIkB0meaaFe zSKzKsTrir1Ru8/xt5zIgyEQwqATp2rwzkoPuTeQZLOht0fsSIGBpD1ZWXUaMAji cfojhd4731cvoxMMGG27IMiHTG6rpKneaZ21Z/7/61P+cjHm/ITOLZzzRvhQMQU7 wuskRf3KTs+3k4x6P9E0qQU1DcJkPSYGq+JDdh389Plald4MLTAZYjIK+J3X35oL QNnUeKzr1YhWWqgchthG =Zoup -----END PGP SIGNATURE----- Merge tag 'nfsd-5.7-rc-1' of git://git.linux-nfs.org/projects/cel/cel-2.6 Pull nfsd fixes from Chuck Lever: "The first set of 5.7-rc fixes for NFS server issues. These were all unresolved at the time the 5.7 window opened, and needed some additional time to ensure they were correctly addressed. They are ready now. At the moment I know of one more urgent issue regarding the NFS server. A fix has been tested and is under review. I expect to send one more pull request, containing this fix (which now consists of 3 patches). Fixes: - Address several use-after-free and memory leak bugs - Prevent a backchannel livelock" * tag 'nfsd-5.7-rc-1' of git://git.linux-nfs.org/projects/cel/cel-2.6: svcrdma: Fix leak of svc_rdma_recv_ctxt objects svcrdma: Fix trace point use-after-free race SUNRPC: Fix backchannel RPC soft lockups SUNRPC/cache: Fix unsafe traverse caused double-free in cache_purge nfsd: memory corruption in nfsd4_lock() |
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Manivannan Sadhasivam
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dfddb54043 |
net: qrtr: Add tracepoint support
Add tracepoint support for QRTR with NS as the first candidate. Later on this can be extended to core QRTR and transport drivers. The trace_printk() used in NS has been replaced by tracepoints. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Waiman Long
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d6c8e949a3 |
blk-iocost: Fix error on iocost_ioc_vrate_adj
Systemtap 4.2 is unable to correctly interpret the "u32 (*missed_ppm)[2]"
argument of the iocost_ioc_vrate_adj trace entry defined in
include/trace/events/iocost.h leading to the following error:
/tmp/stapAcz0G0/stap_c89c58b83cea1724e26395efa9ed4939_6321_aux_6.c:78:8:
error: expected ‘;’, ‘,’ or ‘)’ before ‘*’ token
, u32[]* __tracepoint_arg_missed_ppm
That argument type is indeed rather complex and hard to read. Looking
at block/blk-iocost.c. It is just a 2-entry u32 array. By simplifying
the argument to a simple "u32 *missed_ppm" and adjusting the trace
entry accordingly, the compilation error was gone.
Fixes:
|
|
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Chuck Lever
|
bdb2ce8281 |
xprtrdma: Fix trace point use-after-free race
It's not safe to use resources pointed to by the @send_wr of
ib_post_send() _after_ that function returns. Those resources are
typically freed by the Send completion handler, which can run before
ib_post_send() returns.
Thus the trace points currently around ib_post_send() in the
client's RPC/RDMA transport are a hazard, even when they are
disabled. Rearrange them so that they touch the Work Request only
_before_ ib_post_send() is invoked.
Fixes:
|
|
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Zhiqiang Liu
|
c4b4c2a78a |
buffer: remove useless comment and WB_REASON_FREE_MORE_MEM, reason.
free_more_memory func has been completely removed in commit |
|
|
Chuck Lever
|
e28b4fc652 |
svcrdma: Fix trace point use-after-free race
I hit this while testing nfsd-5.7 with kernel memory debugging enabled on my server: Mar 30 13:21:45 klimt kernel: BUG: unable to handle page fault for address: ffff8887e6c279a8 Mar 30 13:21:45 klimt kernel: #PF: supervisor read access in kernel mode Mar 30 13:21:45 klimt kernel: #PF: error_code(0x0000) - not-present page Mar 30 13:21:45 klimt kernel: PGD 3601067 P4D 3601067 PUD 87c519067 PMD 87c3e2067 PTE 800ffff8193d8060 Mar 30 13:21:45 klimt kernel: Oops: 0000 [#1] SMP DEBUG_PAGEALLOC PTI Mar 30 13:21:45 klimt kernel: CPU: 2 PID: 1933 Comm: nfsd Not tainted 5.6.0-rc6-00040-g881e87a3c6f9 #1591 Mar 30 13:21:45 klimt kernel: Hardware name: Supermicro Super Server/X10SRL-F, BIOS 1.0c 09/09/2015 Mar 30 13:21:45 klimt kernel: RIP: 0010:svc_rdma_post_chunk_ctxt+0xab/0x284 [rpcrdma] Mar 30 13:21:45 klimt kernel: Code: c1 83 34 02 00 00 29 d0 85 c0 7e 72 48 8b bb a0 02 00 00 48 8d 54 24 08 4c 89 e6 48 8b 07 48 8b 40 20 e8 5a 5c 2b e1 41 89 c6 <8b> 45 20 89 44 24 04 8b 05 02 e9 01 00 85 c0 7e 33 e9 5e 01 00 00 Mar 30 13:21:45 klimt kernel: RSP: 0018:ffffc90000dfbdd8 EFLAGS: 00010286 Mar 30 13:21:45 klimt kernel: RAX: 0000000000000000 RBX: ffff8887db8db400 RCX: 0000000000000030 Mar 30 13:21:45 klimt kernel: RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000246 Mar 30 13:21:45 klimt kernel: RBP: ffff8887e6c27988 R08: 0000000000000000 R09: 0000000000000004 Mar 30 13:21:45 klimt kernel: R10: ffffc90000dfbdd8 R11: 00c068ef00000000 R12: ffff8887eb4e4a80 Mar 30 13:21:45 klimt kernel: R13: ffff8887db8db634 R14: 0000000000000000 R15: ffff8887fc931000 Mar 30 13:21:45 klimt kernel: FS: 0000000000000000(0000) GS:ffff88885bd00000(0000) knlGS:0000000000000000 Mar 30 13:21:45 klimt kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Mar 30 13:21:45 klimt kernel: CR2: ffff8887e6c279a8 CR3: 000000081b72e002 CR4: 00000000001606e0 Mar 30 13:21:45 klimt kernel: Call Trace: Mar 30 13:21:45 klimt kernel: ? svc_rdma_vec_to_sg+0x7f/0x7f [rpcrdma] Mar 30 13:21:45 klimt kernel: svc_rdma_send_write_chunk+0x59/0xce [rpcrdma] Mar 30 13:21:45 klimt kernel: svc_rdma_sendto+0xf9/0x3ae [rpcrdma] Mar 30 13:21:45 klimt kernel: ? nfsd_destroy+0x51/0x51 [nfsd] Mar 30 13:21:45 klimt kernel: svc_send+0x105/0x1e3 [sunrpc] Mar 30 13:21:45 klimt kernel: nfsd+0xf2/0x149 [nfsd] Mar 30 13:21:45 klimt kernel: kthread+0xf6/0xfb Mar 30 13:21:45 klimt kernel: ? kthread_queue_delayed_work+0x74/0x74 Mar 30 13:21:45 klimt kernel: ret_from_fork+0x3a/0x50 Mar 30 13:21:45 klimt kernel: Modules linked in: ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue ib_umad ib_ipoib mlx4_ib sb_edac x86_pkg_temp_thermal iTCO_wdt iTCO_vendor_support coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel glue_helper crypto_simd cryptd pcspkr rpcrdma i2c_i801 rdma_ucm lpc_ich mfd_core ib_iser rdma_cm iw_cm ib_cm mei_me raid0 libiscsi mei sg scsi_transport_iscsi ioatdma wmi ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter nfsd nfs_acl lockd auth_rpcgss grace sunrpc ip_tables xfs libcrc32c mlx4_en sd_mod sr_mod cdrom mlx4_core crc32c_intel igb nvme i2c_algo_bit ahci i2c_core libahci nvme_core dca libata t10_pi qedr dm_mirror dm_region_hash dm_log dm_mod dax qede qed crc8 ib_uverbs ib_core Mar 30 13:21:45 klimt kernel: CR2: ffff8887e6c279a8 Mar 30 13:21:45 klimt kernel: ---[ end trace 87971d2ad3429424 ]--- It's absolutely not safe to use resources pointed to by the @send_wr argument of ib_post_send() _after_ that function returns. Those resources are typically freed by the Send completion handler, which can run before ib_post_send() returns. Thus the trace points currently around ib_post_send() in the server's RPC/RDMA transport are a hazard, even when they are disabled. Rearrange them so that they touch the Work Request only _before_ ib_post_send() is invoked. Fixes: |
|
|
Chao Yu
|
8b83ac81f4 |
f2fs: support read iostat
Adds to support accounting read IOs from userspace/kernel. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
|
|
Daeho Jeong
|
2bc4bea338 |
f2fs: add tracepoint for f2fs iostat
Added a tracepoint to see iostat of f2fs. Default period of that is 3 second. This tracepoint can be used to be monitoring I/O statistics periodically. Signed-off-by: Daeho Jeong <daehojeong@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
|
|
Tommi Rantala
|
3f22037d38 |
blk-wbt: Drop needless newlines from tracepoint format strings
Drop needless newlines from tracepoint format strings, they only add empty lines to perf tracing output. Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
|
|
Linus Torvalds
|
63bef48fd6 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: - a lot more of MM, quite a bit more yet to come: (memcg, pagemap, vmalloc, pagealloc, migration, thp, ksm, madvise, virtio, userfaultfd, memory-hotplug, shmem, rmap, zswap, zsmalloc, cleanups) - various other subsystems (procfs, misc, MAINTAINERS, bitops, lib, checkpatch, epoll, binfmt, kallsyms, reiserfs, kmod, gcov, kconfig, ubsan, fault-injection, ipc) * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (158 commits) ipc/shm.c: make compat_ksys_shmctl() static ipc/mqueue.c: fix a brace coding style issue lib/Kconfig.debug: fix a typo "capabilitiy" -> "capability" ubsan: include bug type in report header kasan: unset panic_on_warn before calling panic() ubsan: check panic_on_warn drivers/misc/lkdtm/bugs.c: add arithmetic overflow and array bounds checks ubsan: split "bounds" checker from other options ubsan: add trap instrumentation option init/Kconfig: clean up ANON_INODES and old IO schedulers options kernel/gcov/fs.c: replace zero-length array with flexible-array member gcov: gcc_3_4: replace zero-length array with flexible-array member gcov: gcc_4_7: replace zero-length array with flexible-array member kernel/kmod.c: fix a typo "assuems" -> "assumes" reiserfs: clean up several indentation issues kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol() samples/hw_breakpoint: drop use of kallsyms_lookup_name() samples/hw_breakpoint: drop HW_BREAKPOINT_R when reporting writes fs/binfmt_elf.c: don't free interpreter's ELF pheaders on common path fs/binfmt_elf.c: allocate less for static executable ... |
|
|
Linus Torvalds
|
04de788e61 |
NFS client updates for Linux 5.7
Highlights include:
Stable fixes:
- Fix a page leak in nfs_destroy_unlinked_subrequests()
- Fix use-after-free issues in nfs_pageio_add_request()
- Fix new mount code constant_table array definitions
- finish_automount() requires us to hold 2 refs to the mount record
Features:
- Improve the accuracy of telldir/seekdir by using 64-bit cookies when
possible.
- Allow one RDMA active connection and several zombie connections to
prevent blocking if the remote server is unresponsive.
- Limit the size of the NFS access cache by default
- Reduce the number of references to credentials that are taken by NFS
- pNFS files and flexfiles drivers now support per-layout segment
COMMIT lists.
- Enable partial-file layout segments in the pNFS/flexfiles driver.
- Add support for CB_RECALL_ANY to the pNFS flexfiles layout type
- pNFS/flexfiles Report NFS4ERR_DELAY and NFS4ERR_GRACE errors from
the DS using the layouterror mechanism.
Bugfixes and cleanups:
- SUNRPC: Fix krb5p regressions
- Don't specify NFS version in "UDP not supported" error
- nfsroot: set tcp as the default transport protocol
- pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()
- alloc_nfs_open_context() must use the file cred when available
- Fix locking when dereferencing the delegation cred
- Fix memory leaks in O_DIRECT when nfs_get_lock_context() fails
- Various clean ups of the NFS O_DIRECT commit code
- Clean up RDMA connect/disconnect
- Replace zero-length arrays with C99-style flexible arrays
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Merge tag 'nfs-for-5.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Stable fixes:
- Fix a page leak in nfs_destroy_unlinked_subrequests()
- Fix use-after-free issues in nfs_pageio_add_request()
- Fix new mount code constant_table array definitions
- finish_automount() requires us to hold 2 refs to the mount record
Features:
- Improve the accuracy of telldir/seekdir by using 64-bit cookies
when possible.
- Allow one RDMA active connection and several zombie connections to
prevent blocking if the remote server is unresponsive.
- Limit the size of the NFS access cache by default
- Reduce the number of references to credentials that are taken by
NFS
- pNFS files and flexfiles drivers now support per-layout segment
COMMIT lists.
- Enable partial-file layout segments in the pNFS/flexfiles driver.
- Add support for CB_RECALL_ANY to the pNFS flexfiles layout type
- pNFS/flexfiles Report NFS4ERR_DELAY and NFS4ERR_GRACE errors from
the DS using the layouterror mechanism.
Bugfixes and cleanups:
- SUNRPC: Fix krb5p regressions
- Don't specify NFS version in "UDP not supported" error
- nfsroot: set tcp as the default transport protocol
- pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()
- alloc_nfs_open_context() must use the file cred when available
- Fix locking when dereferencing the delegation cred
- Fix memory leaks in O_DIRECT when nfs_get_lock_context() fails
- Various clean ups of the NFS O_DIRECT commit code
- Clean up RDMA connect/disconnect
- Replace zero-length arrays with C99-style flexible arrays"
* tag 'nfs-for-5.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (86 commits)
NFS: Clean up process of marking inode stale.
SUNRPC: Don't start a timer on an already queued rpc task
NFS/pnfs: Reference the layout cred in pnfs_prepare_layoutreturn()
NFS/pnfs: Fix dereference of layout cred in pnfs_layoutcommit_inode()
NFS: Beware when dereferencing the delegation cred
NFS: Add a module parameter to set nfs_mountpoint_expiry_timeout
NFS: finish_automount() requires us to hold 2 refs to the mount record
NFS: Fix a few constant_table array definitions
NFS: Try to join page groups before an O_DIRECT retransmission
NFS: Refactor nfs_lock_and_join_requests()
NFS: Reverse the submission order of requests in __nfs_pageio_add_request()
NFS: Clean up nfs_lock_and_join_requests()
NFS: Remove the redundant function nfs_pgio_has_mirroring()
NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
NFS: Fix a request reference leak in nfs_direct_write_clear_reqs()
NFS: Fix use-after-free issues in nfs_pageio_add_request()
NFS: Fix races nfs_page_group_destroy() vs nfs_destroy_unlinked_subrequests()
NFS: Fix a page leak in nfs_destroy_unlinked_subrequests()
NFS: Remove unused FLUSH_SYNC support in nfs_initiate_pgio()
pNFS/flexfiles: Specify the layout segment range in LAYOUTGET
...
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Linus Torvalds
|
f40f31cadc |
f2fs-for-5.7-rc1
In this round, we've mainly focused on fixing bugs and addressing issues in
recently introduced compression support.
Enhancement:
- add zstd support, and set LZ4 by default
- add ioctl() to show # of compressed blocks
- show mount time in debugfs
- replace rwsem with spinlock
- avoid lock contention in DIO reads
Some major bug fixes wrt compression:
- compressed block count
- memory access and leak
- remove obsolete fields
- flag controls
Other bug fixes and clean ups:
- fix overflow when handling .flags in inode_info
- fix SPO issue during resize FS flow
- fix compression with fsverity enabled
- potential deadlock when writing compressed pages
- show missing mount options
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Merge tag 'f2fs-for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we've mainly focused on fixing bugs and addressing
issues in recently introduced compression support.
Enhancement:
- add zstd support, and set LZ4 by default
- add ioctl() to show # of compressed blocks
- show mount time in debugfs
- replace rwsem with spinlock
- avoid lock contention in DIO reads
Some major bug fixes wrt compression:
- compressed block count
- memory access and leak
- remove obsolete fields
- flag controls
Other bug fixes and clean ups:
- fix overflow when handling .flags in inode_info
- fix SPO issue during resize FS flow
- fix compression with fsverity enabled
- potential deadlock when writing compressed pages
- show missing mount options"
* tag 'f2fs-for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (66 commits)
f2fs: keep inline_data when compression conversion
f2fs: fix to disable compression on directory
f2fs: add missing CONFIG_F2FS_FS_COMPRESSION
f2fs: switch discard_policy.timeout to bool type
f2fs: fix to verify tpage before releasing in f2fs_free_dic()
f2fs: show compression in statx
f2fs: clean up dic->tpages assignment
f2fs: compress: support zstd compress algorithm
f2fs: compress: add .{init,destroy}_decompress_ctx callback
f2fs: compress: fix to call missing destroy_compress_ctx()
f2fs: change default compression algorithm
f2fs: clean up {cic,dic}.ref handling
f2fs: fix to use f2fs_readpage_limit() in f2fs_read_multi_pages()
f2fs: xattr.h: Make stub helpers inline
f2fs: fix to avoid double unlock
f2fs: fix potential .flags overflow on 32bit architecture
f2fs: fix NULL pointer dereference in f2fs_verity_work()
f2fs: fix to clear PG_error if fsverity failed
f2fs: don't call fscrypt_get_encryption_info() explicitly in f2fs_tmpfile()
f2fs: don't trigger data flush in foreground operation
...
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Peter Xu
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e1e267c792 |
khugepaged: skip collapse if uffd-wp detected
Don't collapse the huge PMD if there is any userfault write protected small PTEs. The problem is that the write protection is in small page granularity and there's no way to keep all these write protection information if the small pages are going to be merged into a huge PMD. The same thing needs to be considered for swap entries and migration entries. So do the check as well disregarding khugepaged_max_ptes_swap. Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Reviewed-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Bobby Powers <bobbypowers@gmail.com> Cc: Brian Geffon <bgeffon@google.com> Cc: David Hildenbrand <david@redhat.com> Cc: Denis Plotnikov <dplotnikov@virtuozzo.com> Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "Kirill A . Shutemov" <kirill@shutemov.name> Cc: Martin Cracauer <cracauer@cons.org> Cc: Marty McFadden <mcfadden8@llnl.gov> Cc: Maya Gokhale <gokhale2@llnl.gov> Cc: Mel Gorman <mgorman@suse.de> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: Rik van Riel <riel@redhat.com> Cc: Shaohua Li <shli@fb.com> Link: http://lkml.kernel.org/r/20200220163112.11409-12-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Huang Ying
|
9de4f22a60 |
mm: code cleanup for MADV_FREE
Some comments for MADV_FREE is revised and added to help people understand the MADV_FREE code, especially the page flag, PG_swapbacked. This makes page_is_file_cache() isn't consistent with its comments. So the function is renamed to page_is_file_lru() to make them consistent again. All these are put in one patch as one logical change. Suggested-by: David Hildenbrand <david@redhat.com> Suggested-by: Johannes Weiner <hannes@cmpxchg.org> Suggested-by: David Rientjes <rientjes@google.com> Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Michal Hocko <mhocko@kernel.org> Acked-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Minchan Kim <minchan@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@surriel.com> Link: http://lkml.kernel.org/r/20200317100342.2730705-1-ying.huang@intel.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Anshuman Khandual
|
7e96fb5710 |
mm/vma: add missing VMA flag readable name for VM_SYNC
Patch series "mm/vma: Use all available wrappers when possible", v2. Apart from adding a VMA flag readable name for trace purpose, this series does some open encoding replacements with availabe VMA specific wrappers. This skips VM_HUGETLB check in vma_migratable() as its already being done with another patch (https://patchwork.kernel.org/patch/11347831/) which is yet to be merged. This patch (of 4): This just adds the missing readable name for VM_SYNC. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nick Piggin <npiggin@gmail.com> Cc: Paul Burton <paulburton@kernel.org> Cc: Paul Mackerras <paulus@ozlabs.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/1582520593-30704-2-git-send-email-anshuman.khandual@arm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Linus Torvalds
|
aa1a8ce533 |
New tracing features:
- The ring buffer is no longer disabled when reading the trace file.
The trace_pipe file was made to be used for live tracing and reading
as it acted like the normal producer/consumer. As the trace file
would not consume the data, the easy way of handling it was to just
disable writes to the ring buffer. This came to a surprise to the
BPF folks who complained about lost events due to reading.
This is no longer an issue. If someone wants to keep the old disabling
there's a new option "pause-on-trace" that can be set.
- New set_ftrace_notrace_pid file. PIDs in this file will not be traced
by the function tracer. Similar to set_ftrace_pid, which makes the
function tracer only trace those tasks with PIDs in the file, the
set_ftrace_notrace_pid does the reverse.
- New set_event_notrace_pid file. PIDs in this file will cause events
not to be traced if triggered by a task with a matching PID.
Similar to the set_event_pid file but will not be traced.
Note, sched_waking and sched_switch events may still be trace if
one of the tasks referenced by those events contains a PID that
is allowed to be traced.
Tracing related features:
- New bootconfig option, that is attached to the initrd file.
If bootconfig is on the command line, then the initrd file
is searched looking for a bootconfig appended at the end.
- New GPU tracepoint infrastructure to help the gfx drivers to get
off debugfs (acked by Greg Kroah-Hartman)
Other minor updates and fixes.
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Merge tag 'trace-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"New tracing features:
- The ring buffer is no longer disabled when reading the trace file.
The trace_pipe file was made to be used for live tracing and
reading as it acted like the normal producer/consumer. As the trace
file would not consume the data, the easy way of handling it was to
just disable writes to the ring buffer.
This came to a surprise to the BPF folks who complained about lost
events due to reading. This is no longer an issue. If someone wants
to keep the old disabling there's a new option "pause-on-trace"
that can be set.
- New set_ftrace_notrace_pid file. PIDs in this file will not be
traced by the function tracer.
Similar to set_ftrace_pid, which makes the function tracer only
trace those tasks with PIDs in the file, the set_ftrace_notrace_pid
does the reverse.
- New set_event_notrace_pid file. PIDs in this file will cause events
not to be traced if triggered by a task with a matching PID.
Similar to the set_event_pid file but will not be traced. Note,
sched_waking and sched_switch events may still be traced if one of
the tasks referenced by those events contains a PID that is allowed
to be traced.
Tracing related features:
- New bootconfig option, that is attached to the initrd file.
If bootconfig is on the command line, then the initrd file is
searched looking for a bootconfig appended at the end.
- New GPU tracepoint infrastructure to help the gfx drivers to get
off debugfs (acked by Greg Kroah-Hartman)
And other minor updates and fixes"
* tag 'trace-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (27 commits)
tracing: Do not allocate buffer in trace_find_next_entry() in atomic
tracing: Add documentation on set_ftrace_notrace_pid and set_event_notrace_pid
selftests/ftrace: Add test to test new set_event_notrace_pid file
selftests/ftrace: Add test to test new set_ftrace_notrace_pid file
tracing: Create set_event_notrace_pid to not trace tasks
ftrace: Create set_ftrace_notrace_pid to not trace tasks
ftrace: Make function trace pid filtering a bit more exact
ftrace/kprobe: Show the maxactive number on kprobe_events
tracing: Have the document reflect that the trace file keeps tracing enabled
ring-buffer/tracing: Have iterator acknowledge dropped events
tracing: Do not disable tracing when reading the trace file
ring-buffer: Do not disable recording when there is an iterator
ring-buffer: Make resize disable per cpu buffer instead of total buffer
ring-buffer: Optimize rb_iter_head_event()
ring-buffer: Do not die if rb_iter_peek() fails more than thrice
ring-buffer: Have rb_iter_head_event() handle concurrent writer
ring-buffer: Add page_stamp to iterator for synchronization
ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance()
ring-buffer: Have ring_buffer_empty() not depend on tracing stopped
tracing: Save off entry when peeking at next entry
...
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|
Linus Torvalds
|
b3d8e42282 |
Highlights:
- Fix EXCHANGE_ID response when NFSD runs in a container - A battery of new static trace points - Socket transports now use bio_vec to send Replies - NFS/RDMA now supports filesystems with no .splice_read method - Favor memcpy() over DMA mapping for small RPC/RDMA Replies - Add pre-requisites for supporting multiple Write chunks - Numerous minor fixes and clean-ups -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABAgAGBQJegj9pAAoJEDNqszNvZn+XNGgP/RsRul/UGe70YoPS6AwxI+c1 2JVni5LV83aVGSN1df/xRNdugWh4j8e8stBIJPCnWFzUERFvrzVeVyW0/dlIy37l SRL1L62EzFUejAL45O+CkF5+KI2kAWMgDCv+rPnFnIuXVa/sThx63F1AJikVMPjB 7We3vd5Kh/CrMeMflebJYuY12xE6di2b3ifkZRO0/yuMaAuqJrDreYf4L6xpA4rC QnKQcNl7LGlOwGSI2WvDrCLE056PJFhTuzTawI80NKnkXMMFNc6/7NoXJqasVlHG fiki2mHbJrbYd8isIm3Vl/QkFsM8QjijtpVxC9gd151w0P7DfpMYmSzlZL7nvq/R Nt6IIqbaxWSS1VULsuS7rDtBwwZpW/LRWaUhEvMwimR2jeOxcwtlDVTX/dRH2mxq Ume64Hn8xMEhhx9tHCPQ+Rgjqv5m+ZEAvmV6B7RM9nT2z2MSzQQESeMB14VZZmF/ 2oH1dDCVdCmb4ZOcD5yxL6Y1hijn45s+YHdts9uIsCudKYPI906vPhogFC+PVJv+ MrOiUf8d40H0ra8VAUFCjAceOulkv90aLhBjoHbPsP4SQOTsRuUXnsKESZpSHY72 nT/uPM23ULv4kQ6tHB8yQ3ordjCBRgb4zIKtotc3Wpi7dhO8u6ptPj4soiflRShO 8/3N5dYfqdt9FRyr7Z8/ =o5G0 -----END PGP SIGNATURE----- Merge tag 'nfsd-5.7' of git://git.linux-nfs.org/projects/cel/cel-2.6 Pull nfsd updates from Chuck Lever: - Fix EXCHANGE_ID response when NFSD runs in a container - A battery of new static trace points - Socket transports now use bio_vec to send Replies - NFS/RDMA now supports filesystems with no .splice_read method - Favor memcpy() over DMA mapping for small RPC/RDMA Replies - Add pre-requisites for supporting multiple Write chunks - Numerous minor fixes and clean-ups [ Chuck is filling in for Bruce this time while he and his family settle into a new house ] * tag 'nfsd-5.7' of git://git.linux-nfs.org/projects/cel/cel-2.6: (39 commits) svcrdma: Fix leak of transport addresses SUNRPC: Fix a potential buffer overflow in 'svc_print_xprts()' SUNRPC/cache: don't allow invalid entries to be flushed nfsd: fsnotify on rmdir under nfsd/clients/ nfsd4: kill warnings on testing stateids with mismatched clientids nfsd: remove read permission bit for ctl sysctl NFSD: Fix NFS server build errors sunrpc: Add tracing for cache events SUNRPC/cache: Allow garbage collection of invalid cache entries nfsd: export upcalls must not return ESTALE when mountd is down nfsd: Add tracepoints for update of the expkey and export cache entries nfsd: Add tracepoints for exp_find_key() and exp_get_by_name() nfsd: Add tracing to nfsd_set_fh_dentry() nfsd: Don't add locks to closed or closing open stateids SUNRPC: Teach server to use xprt_sock_sendmsg for socket sends SUNRPC: Refactor xs_sendpages() svcrdma: Avoid DMA mapping small RPC Replies svcrdma: Fix double sync of transport header buffer svcrdma: Refactor chunk list encoders SUNRPC: Add encoders for list item discriminators ... |
|
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Chao Yu
|
50cfa66f0d |
f2fs: compress: support zstd compress algorithm
Add zstd compress algorithm support, use "compress_algorithm=zstd" mountoption to enable it. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
|
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Linus Torvalds
|
79f51b7b9c |
SCSI misc on 20200402
update changing all our txt files to rst ones. Excluding that, we have the usual driver updates (qla2xxx, ufs, lpfc, zfcp, ibmvfc, pm80xx, aacraid), a treewide update for scnprintf and some other minor updates. The major core update is Hannes moving functions out of the aacraid driver and into the core. Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com> -----BEGIN PGP SIGNATURE----- iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCXoYKiyYcamFtZXMuYm90 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishSasAP4iGwSB Y8tFaZgWadu76+wj5MdqTBoXdhnIuFF0rZG3pQEAiIKdsfQlbSFdm75+gUtx5hG/ GOilX/pJczTRJDCGNis= =g7Sk -----END PGP SIGNATURE----- Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "This series has a huge amount of churn because it pulls in Mauro's doc update changing all our txt files to rst ones. Excluding that, we have the usual driver updates (qla2xxx, ufs, lpfc, zfcp, ibmvfc, pm80xx, aacraid), a treewide update for scnprintf and some other minor updates. The major core change is Hannes moving functions out of the aacraid driver and into the core" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (223 commits) scsi: aic7xxx: aic97xx: Remove FreeBSD-specific code scsi: ufs: Do not rely on prefetched data scsi: dc395x: remove dc395x_bios_param scsi: libiscsi: Fix error count for active session scsi: hpsa: correct race condition in offload enabled scsi: message: fusion: Replace zero-length array with flexible-array member scsi: qedi: Add PCI shutdown handler support scsi: qedi: Add MFW error recovery process scsi: ufs: Enable block layer runtime PM for well-known logical units scsi: ufs-qcom: Override devfreq parameters scsi: ufshcd: Let vendor override devfreq parameters scsi: ufshcd: Update the set frequency to devfreq scsi: ufs: Resume ufs host before accessing ufs device scsi: ufs-mediatek: customize the delay for enabling host scsi: ufs: make HCE polling more compact to improve initialization latency scsi: ufs: allow custom delay prior to host enabling scsi: ufs-mediatek: use common delay function scsi: ufs: introduce common and flexible delay function scsi: ufs: use an enum for host capabilities scsi: ufs: fix uninitialized tx_lanes in ufshcd_disable_tx_lcc() ... |
|
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Jaewon Kim
|
df529cabb7 |
mm: mmap: add trace point of vm_unmapped_area
Even on 64 bit kernel, the mmap failure can happen for a 32 bit task. Virtual memory space shortage of a task on mmap is reported to userspace as -ENOMEM. It can be confused as physical memory shortage of overall system. The vm_unmapped_area can be called to by some drivers or other kernel core system like filesystem. In my platform, GPU driver calls to vm_unmapped_area and the driver returns -ENOMEM even in GPU side shortage. It can be hard to distinguish which code layer returns the -ENOMEM. Create mmap trace file and add trace point of vm_unmapped_area. i.e.) 277.156599: vm_unmapped_area: addr=77e0d03000 err=0 total_vm=0x17014b flags=0x1 len=0x400000 lo=0x8000 hi=0x7878c27000 mask=0x0 ofs=0x1 342.838740: vm_unmapped_area: addr=0 err=-12 total_vm=0xffb08 flags=0x0 len=0x100000 lo=0x40000000 hi=0xfffff000 mask=0x0 ofs=0x22 [akpm@linux-foundation.org: prefix address printk with 0x, per Matthew] Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Borislav Petkov <bp@suse.de> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michel Lespinasse <walken@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Link: http://lkml.kernel.org/r/20200320055823.27089-3-jaewon31.kim@samsung.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Linus Torvalds
|
15c981d16d |
for-5.7-tag
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Merge tag 'for-5.7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"A number of core changes that make things work better in general, code
is simpler and cleaner.
Core changes:
- per-inode file extent tree, for in memory tracking of contiguous
extent ranges to make sure i_size adjustments are accurate
- tree root structures are protected by reference counts, replacing
SRCU that did not cover some cases
- leak detector for tree root structures
- per-transaction pinned extent tracking
- buffer heads are replaced by bios for super block access
- speedup of extent back reference resolution, on an example test
scenario the runtime of send went down from a hour to minutes
- factor out locking scheme used for subvolume writer and NOCOW
exclusion, abstracted as DREW lock, double reader-writer exclusion
(allow either readers or writers)
- cleanup and abstract extent allocation policies, preparation for
zoned device support
- make reflink/clone_range work on inline extents
- add more cancellation point for relocation, improves long response
from 'balance cancel'
- add page migration callback for data pages
- switch to guid for uuids, with additional cleanups of the interface
- make ranged full fsyncs more efficient
- removal of obsolete ioctl flag BTRFS_SUBVOL_CREATE_ASYNC
- remove b-tree readahead from delayed refs paths, avoiding seek and
read unnecessary blocks
Features:
- v2 of ioctl to delete subvolumes, allowing to delete by id and more
future extensions
Fixes:
- fix qgroup rescan worker that could block umount
- fix crash during unmount due to race with delayed inode workers
- fix dellaloc flushing logic that could create unnecessary chunks
under heavy load
- fix missing file extent item for hole after ranged fsync
- several fixes in relocation error handling
Other:
- more documentation of relocation, device replace, space
reservations
- many random cleanups"
* tag 'for-5.7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (210 commits)
btrfs: fix missing semaphore unlock in btrfs_sync_file
btrfs: use nofs allocations for running delayed items
btrfs: sysfs: Use scnprintf() instead of snprintf()
btrfs: do not resolve backrefs for roots that are being deleted
btrfs: track reloc roots based on their commit root bytenr
btrfs: restart relocate_tree_blocks properly
btrfs: reloc: reorder reservation before root selection
btrfs: do not readahead in build_backref_tree
btrfs: do not use readahead for running delayed refs
btrfs: Remove async_transid from btrfs_mksubvol/create_subvol/create_snapshot
btrfs: Remove transid argument from btrfs_ioctl_snap_create_transid
btrfs: Remove BTRFS_SUBVOL_CREATE_ASYNC support
btrfs: kill the subvol_srcu
btrfs: make btrfs_cleanup_fs_roots use the radix tree lock
btrfs: don't take an extra root ref at allocation time
btrfs: hold a ref on the root on the dead roots list
btrfs: make inodes hold a ref on their roots
btrfs: move the root freeing stuff into btrfs_put_root
btrfs: move ino_cache_inode dropping out of btrfs_free_fs_root
btrfs: make the extent buffer leak check per fs info
...
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|
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Linus Torvalds
|
642e53ead6 |
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"The main changes in this cycle are:
- Various NUMA scheduling updates: harmonize the load-balancer and
NUMA placement logic to not work against each other. The intended
result is better locality, better utilization and fewer migrations.
- Introduce Thermal Pressure tracking and optimizations, to improve
task placement on thermally overloaded systems.
- Implement frequency invariant scheduler accounting on (some) x86
CPUs. This is done by observing and sampling the 'recent' CPU
frequency average at ~tick boundaries. The CPU provides this data
via the APERF/MPERF MSRs. This hopefully makes our capacity
estimates more precise and keeps tasks on the same CPU better even
if it might seem overloaded at a lower momentary frequency. (As
usual, turbo mode is a complication that we resolve by observing
the maximum frequency and renormalizing to it.)
- Add asymmetric CPU capacity wakeup scan to improve capacity
utilization on asymmetric topologies. (big.LITTLE systems)
- PSI fixes and optimizations.
- RT scheduling capacity awareness fixes & improvements.
- Optimize the CONFIG_RT_GROUP_SCHED constraints code.
- Misc fixes, cleanups and optimizations - see the changelog for
details"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (62 commits)
threads: Update PID limit comment according to futex UAPI change
sched/fair: Fix condition of avg_load calculation
sched/rt: cpupri_find: Trigger a full search as fallback
kthread: Do not preempt current task if it is going to call schedule()
sched/fair: Improve spreading of utilization
sched: Avoid scale real weight down to zero
psi: Move PF_MEMSTALL out of task->flags
MAINTAINERS: Add maintenance information for psi
psi: Optimize switching tasks inside shared cgroups
psi: Fix cpu.pressure for cpu.max and competing cgroups
sched/core: Distribute tasks within affinity masks
sched/fair: Fix enqueue_task_fair warning
thermal/cpu-cooling, sched/core: Move the arch_set_thermal_pressure() API to generic scheduler code
sched/rt: Remove unnecessary push for unfit tasks
sched/rt: Allow pulling unfitting task
sched/rt: Optimize cpupri_find() on non-heterogenous systems
sched/rt: Re-instate old behavior in select_task_rq_rt()
sched/rt: cpupri_find: Implement fallback mechanism for !fit case
sched/fair: Fix reordering of enqueue/dequeue_task_fair()
sched/fair: Fix runnable_avg for throttled cfs
...
|
|
|
Linus Torvalds
|
7c4fa15071 |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar: "The main changes in this cycle were: - Make kfree_rcu() use kfree_bulk() for added performance - RCU updates - Callback-overload handling updates - Tasks-RCU KCSAN and sparse updates - Locking torture test and RCU torture test updates - Documentation updates - Miscellaneous fixes" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (74 commits) rcu: Make rcu_barrier() account for offline no-CBs CPUs rcu: Mark rcu_state.gp_seq to detect concurrent writes Documentation/memory-barriers: Fix typos doc: Add rcutorture scripting to torture.txt doc/RCU/rcu: Use https instead of http if possible doc/RCU/rcu: Use absolute paths for non-rst files doc/RCU/rcu: Use ':ref:' for links to other docs doc/RCU/listRCU: Update example function name doc/RCU/listRCU: Fix typos in a example code snippets doc/RCU/Design: Remove remaining HTML tags in ReST files doc: Add some more RCU list patterns in the kernel rcutorture: Set KCSAN Kconfig options to detect more data races rcutorture: Manually clean up after rcu_barrier() failure rcutorture: Make rcu_torture_barrier_cbs() post from corresponding CPU rcuperf: Measure memory footprint during kfree_rcu() test rcutorture: Annotation lockless accesses to rcu_torture_current rcutorture: Add READ_ONCE() to rcu_torture_count and rcu_torture_batch rcutorture: Fix stray access to rcu_fwd_cb_nodelay rcutorture: Fix rcu_torture_one_read()/rcu_torture_writer() data race rcutorture: Make kvm-find-errors.sh abort on bad directory ... |
|
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Linus Torvalds
|
49835c15a5 |
Power management updates for 5.7-rc1
- Clean up and rework the PM QoS API to simplify the code and
reduce the size of it (Rafael Wysocki).
- Fix a suspend-to-idle wakeup regression on Dell XPS13 9370
and similar platforms where the USB plug/unplug events are
handled by the EC (Rafael Wysocki).
- CLean up the intel_idle and PSCI cpuidle drivers (Rafael Wysocki,
Ulf Hansson).
- Extend the haltpoll cpuidle driver so that it can be forced to
run on some systems where it refused to load (Maciej Szmigiero).
- Convert several cpufreq documents to the .rst format and move the
legacy driver documentation into one common file (Mauro Carvalho
Chehab, Rafael Wysocki).
- Update several cpufreq drivers:
* Extend and fix the imx-cpufreq-dt driver (Anson Huang).
* Improve the -EPROBE_DEFER handling and fix unwanted CPU
overclocking on i.MX6ULL in imx6q-cpufreq (Anson Huang,
Christoph Niedermaier).
* Add support for Krait based SoCs to the qcom driver (Ansuel
Smith).
* Add support for OPP_PLUS to ti-cpufreq (Lokesh Vutla).
* Add platform specific intermediate callbacks support to
cpufreq-dt and update the imx6q driver (Peng Fan).
* Simplify and consolidate some pieces of the intel_pstate driver
and update its documentation (Rafael Wysocki, Alex Hung).
- Fix several devfreq issues:
* Remove unneeded extern keyword from a devfreq header file
and use the DEVFREQ_GOV_UPDATE_INTERNAL event name instead of
DEVFREQ_GOV_INTERNAL (Chanwoo Choi).
* Fix the handling of dev_pm_qos_remove_request() result (Leonard
Crestez).
* Use constant name for userspace governor (Pierre Kuo).
* Get rid of doc warnings and fix a typo (Christophe JAILLET).
- Use built-in RCU list checking in some places in the PM core to
avoid false-positive RCU usage warnings (Madhuparna Bhowmik).
- Add explicit READ_ONCE()/WRITE_ONCE() annotations to low-level
PM QoS routines (Qian Cai).
- Fix removal of wakeup sources to avoid NULL pointer dereferences
in a corner case (Neeraj Upadhyay).
- Clean up the handling of hibernate compat ioctls and fix the
related documentation (Eric Biggers).
- Update the idle_inject power capping driver to use variable-length
arrays instead of zero-length arrays (Gustavo Silva).
- Fix list format in a PM QoS document (Randy Dunlap).
- Make the cpufreq stats module use scnprintf() to avoid potential
buffer overflows (Takashi Iwai).
- Add pm_runtime_get_if_active() to PM-runtime API (Sakari Ailus).
- Allow no domain-idle-states DT property in generic PM domains (Ulf
Hansson).
- Fix a broken y-axis scale in the intel_pstate_tracer utility (Doug
Smythies).
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Merge tag 'pm-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These clean up and rework the PM QoS API, address a suspend-to-idle
wakeup regression on some ACPI-based platforms, clean up and extend a
few cpuidle drivers, update multiple cpufreq drivers and cpufreq
documentation, and fix a number of issues in devfreq and several other
things all over.
Specifics:
- Clean up and rework the PM QoS API to simplify the code and reduce
the size of it (Rafael Wysocki).
- Fix a suspend-to-idle wakeup regression on Dell XPS13 9370 and
similar platforms where the USB plug/unplug events are handled by
the EC (Rafael Wysocki).
- CLean up the intel_idle and PSCI cpuidle drivers (Rafael Wysocki,
Ulf Hansson).
- Extend the haltpoll cpuidle driver so that it can be forced to run
on some systems where it refused to load (Maciej Szmigiero).
- Convert several cpufreq documents to the .rst format and move the
legacy driver documentation into one common file (Mauro Carvalho
Chehab, Rafael Wysocki).
- Update several cpufreq drivers:
* Extend and fix the imx-cpufreq-dt driver (Anson Huang).
* Improve the -EPROBE_DEFER handling and fix unwanted CPU
overclocking on i.MX6ULL in imx6q-cpufreq (Anson Huang,
Christoph Niedermaier).
* Add support for Krait based SoCs to the qcom driver (Ansuel
Smith).
* Add support for OPP_PLUS to ti-cpufreq (Lokesh Vutla).
* Add platform specific intermediate callbacks support to
cpufreq-dt and update the imx6q driver (Peng Fan).
* Simplify and consolidate some pieces of the intel_pstate
driver and update its documentation (Rafael Wysocki, Alex
Hung).
- Fix several devfreq issues:
* Remove unneeded extern keyword from a devfreq header file and
use the DEVFREQ_GOV_UPDATE_INTERNAL event name instead of
DEVFREQ_GOV_INTERNAL (Chanwoo Choi).
* Fix the handling of dev_pm_qos_remove_request() result
(Leonard Crestez).
* Use constant name for userspace governor (Pierre Kuo).
* Get rid of doc warnings and fix a typo (Christophe JAILLET).
- Use built-in RCU list checking in some places in the PM core to
avoid false-positive RCU usage warnings (Madhuparna Bhowmik).
- Add explicit READ_ONCE()/WRITE_ONCE() annotations to low-level PM
QoS routines (Qian Cai).
- Fix removal of wakeup sources to avoid NULL pointer dereferences in
a corner case (Neeraj Upadhyay).
- Clean up the handling of hibernate compat ioctls and fix the
related documentation (Eric Biggers).
- Update the idle_inject power capping driver to use variable-length
arrays instead of zero-length arrays (Gustavo Silva).
- Fix list format in a PM QoS document (Randy Dunlap).
- Make the cpufreq stats module use scnprintf() to avoid potential
buffer overflows (Takashi Iwai).
- Add pm_runtime_get_if_active() to PM-runtime API (Sakari Ailus).
- Allow no domain-idle-states DT property in generic PM domains (Ulf
Hansson).
- Fix a broken y-axis scale in the intel_pstate_tracer utility (Doug
Smythies)"
* tag 'pm-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (78 commits)
cpufreq: intel_pstate: Simplify intel_pstate_cpu_init()
tools/power/x86/intel_pstate_tracer: fix a broken y-axis scale
ACPI: PM: s2idle: Refine active GPEs check
ACPICA: Allow acpi_any_gpe_status_set() to skip one GPE
PM: sleep: wakeup: Skip wakeup_source_sysfs_remove() if device is not there
PM / devfreq: Get rid of some doc warnings
PM / devfreq: Fix handling dev_pm_qos_remove_request result
PM / devfreq: Fix a typo in a comment
PM / devfreq: Change to DEVFREQ_GOV_UPDATE_INTERVAL event name
PM / devfreq: Remove unneeded extern keyword
PM / devfreq: Use constant name of userspace governor
ACPI: PM: s2idle: Fix comment in acpi_s2idle_prepare_late()
cpufreq: qcom: Add support for krait based socs
cpufreq: imx6q-cpufreq: Improve the logic of -EPROBE_DEFER handling
cpufreq: Use scnprintf() for avoiding potential buffer overflow
cpuidle: psci: Split psci_dt_cpu_init_idle()
PM / Domains: Allow no domain-idle-states DT property in genpd when parsing
PM / hibernate: Remove unnecessary compat ioctl overrides
PM: hibernate: fix docs for ioctls that return loff_t via pointer
Documentation: intel_pstate: update links for references
...
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Linus Torvalds
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e59cd88028 |
for-5.7/io_uring-2020-03-29
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Merge tag 'for-5.7/io_uring-2020-03-29' of git://git.kernel.dk/linux-block
Pull io_uring updates from Jens Axboe:
"Here are the io_uring changes for this merge window. Light on new
features this time around (just splice + buffer selection), lots of
cleanups, fixes, and improvements to existing support. In particular,
this contains:
- Cleanup fixed file update handling for stack fallback (Hillf)
- Re-work of how pollable async IO is handled, we no longer require
thread offload to handle that. Instead we rely using poll to drive
this, with task_work execution.
- In conjunction with the above, allow expendable buffer selection,
so that poll+recv (for example) no longer has to be a split
operation.
- Make sure we honor RLIMIT_FSIZE for buffered writes
- Add support for splice (Pavel)
- Linked work inheritance fixes and optimizations (Pavel)
- Async work fixes and cleanups (Pavel)
- Improve io-wq locking (Pavel)
- Hashed link write improvements (Pavel)
- SETUP_IOPOLL|SETUP_SQPOLL improvements (Xiaoguang)"
* tag 'for-5.7/io_uring-2020-03-29' of git://git.kernel.dk/linux-block: (54 commits)
io_uring: cleanup io_alloc_async_ctx()
io_uring: fix missing 'return' in comment
io-wq: handle hashed writes in chains
io-uring: drop 'free_pfile' in struct io_file_put
io-uring: drop completion when removing file
io_uring: Fix ->data corruption on re-enqueue
io-wq: close cancel gap for hashed linked work
io_uring: make spdxcheck.py happy
io_uring: honor original task RLIMIT_FSIZE
io-wq: hash dependent work
io-wq: split hashing and enqueueing
io-wq: don't resched if there is no work
io-wq: remove duplicated cancel code
io_uring: fix truncated async read/readv and write/writev retry
io_uring: dual license io_uring.h uapi header
io_uring: io_uring_enter(2) don't poll while SETUP_IOPOLL|SETUP_SQPOLL enabled
io_uring: Fix unused function warnings
io_uring: add end-of-bits marker and build time verify it
io_uring: provide means of removing buffers
io_uring: add IOSQE_BUFFER_SELECT support for IORING_OP_RECVMSG
...
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Chuck Lever
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e28ce90083 |
xprtrdma: kmalloc rpcrdma_ep separate from rpcrdma_xprt
Change the rpcrdma_xprt_disconnect() function so that it no longer waits for the DISCONNECTED event. This prevents blocking if the remote is unresponsive. In rpcrdma_xprt_disconnect(), the transport's rpcrdma_ep is detached. Upon return from rpcrdma_xprt_disconnect(), the transport (r_xprt) is ready immediately for a new connection. The RDMA_CM_DEVICE_REMOVAL and RDMA_CM_DISCONNECTED events are now handled almost identically. However, because the lifetimes of rpcrdma_xprt structures and rpcrdma_ep structures are now independent, creating an rpcrdma_ep needs to take a module ref count. The ep now owns most of the hardware resources for a transport. Also, a kref is needed to ensure that rpcrdma_ep sticks around long enough for the cm_event_handler to finish. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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Chuck Lever
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745b734c9b |
xprtrdma: Extract sockaddr from struct rdma_cm_id
rpcrdma_cm_event_handler() is always passed an @id pointer that is valid. However, in a subsequent patch, we won't be able to extract an r_xprt in every case. So instead of using the r_xprt's presentation address strings, extract them from struct rdma_cm_id. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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Chuck Lever
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93aa8e0a9d |
xprtrdma: Merge struct rpcrdma_ia into struct rpcrdma_ep
I eventually want to allocate rpcrdma_ep separately from struct rpcrdma_xprt so that on occasion there can be more than one ep per xprt. The new struct rpcrdma_ep will contain all the fields currently in rpcrdma_ia and in rpcrdma_ep. This is all the device and CM settings for the connection, in addition to per-connection settings negotiated with the remote. Take this opportunity to rename the existing ep fields from rep_* to re_* to disambiguate these from struct rpcrdma_rep. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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Chuck Lever
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d6ccebf956 |
xprtrdma: Disconnect on flushed completion
Completion errors after a disconnect often occur much sooner than a CM_DISCONNECT event. Use this to try to detect connection loss more quickly. Note that other kernel ULPs do take care to disconnect explicitly when a WR is flushed. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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Chuck Lever
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81fe0c57f4 |
xprtrdma: Invoke rpcrdma_ia_open in the connect worker
Move rdma_cm_id creation into rpcrdma_ep_create() so that it is now responsible for allocating all per-connection hardware resources. With this clean-up, all three arms of the switch statement in rpcrdma_ep_connect are exactly the same now, thus the switch can be removed. Because device removal behaves a little differently than disconnection, there is a little more work to be done before rpcrdma_ep_destroy() can release the connection's rdma_cm_id. So it is not quite symmetrical with rpcrdma_ep_create() yet. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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Chuck Lever
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62a89501a3 |
xprtrdma: Enhance MR-related trace points
Two changes: - Show the number of SG entries that were mapped. This helps debug DMA-related problems. - Record the MR's resource ID instead of its memory address. This groups each MR with its associated rdma-tool output, and reduces needless exposure of memory addresses. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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Viacheslav Dubeyko
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1a0275239e |
scsi: target: core: add task tag to trace events
Trace events target_sequencer_start and target_cmd_complete
(include/trace/events/target.h) are ready to show NAA identifier, LUN ID,
and many other important command details in the system log:
TP_printk("%s -> LUN %03u %s data_length %6u CDB %s (TA:%s C:%02x)",
However, it's still hard to identify command on the initiator and command
on the target in the real life output of system log. For that purpose SCSI
provides a command identifier or task tag (term used in previous
standards). This patch adds tag ID in the system log's output:
TP_printk("%s -> LUN %03u tag %#llx %s data_length %6u CDB %s (TA:%s C:%02x)",
kworker/1:1-35 [001] .... 1392.989452: target_sequencer_start:
naa.5001405ec1ba6364 -> LUN 001 tag 0x1
SERVICE_ACTION_IN_16 data_length 32
CDB 9e 10 00 00 00 00 00 00 00 00 00 00 00 20 00 00 (TA:SIMPLE C:00)
kworker/1:1-35 [001] .... 1392.989456: target_cmd_complete:
naa.5001405ec1ba6364 <- LUN 001 tag 0x1 status GOOD (sense len 0)
SERVICE_ACTION_IN_16 data_length 32
CDB 9e 10 00 00 00 00 00 00 00 00 00 00 00 20 00 00 (TA:SIMPLE C:00)
Link: https://lore.kernel.org/r/226e01deaa9baf46d6ff3b8698bc9fe881f7dfc1.camel@dubeyko.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Reviewed-by: Bart van Assche <bvanassche@acm.org>
Signed-off-by: Viacheslav Dubeyko <v.dubeiko@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Nikolay Borisov
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fe119a6eeb |
btrfs: switch to per-transaction pinned extents
This commit flips the switch to start tracking/processing pinned extents on a per-transaction basis. It mostly replaces all references from btrfs_fs_info::(pinned_extents|freed_extents[]) to btrfs_transaction::pinned_extents. Two notable modifications that warrant explicit mention are changing clean_pinned_extents to get a reference to the previously running transaction. The other one is removal of call to btrfs_destroy_pinned_extent since transactions are going to be cleaned in btrfs_cleanup_one_transaction. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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Josef Bacik
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3f1c64ce04 |
btrfs: delete the ordered isize update code
Now that we have a safe way to update the isize, remove all of this code as it's no longer needed. Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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Josef Bacik
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41a2ee75aa |
btrfs: introduce per-inode file extent tree
In order to keep track of where we have file extents on disk, and thus where it is safe to adjust the i_size to, we need to have a tree in place to keep track of the contiguous areas we have file extents for. Add helpers to use this tree, as it's not required for NO_HOLES file systems. We will use this by setting DIRTY for areas we know we have file extent item's set, and clearing it when we remove file extent items for truncation. Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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Paul E. McKenney
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aa93ec620b |
Merge branches 'doc.2020.02.27a', 'fixes.2020.03.21a', 'kfree_rcu.2020.02.20a', 'locktorture.2020.02.20a', 'ovld.2020.02.20a', 'rcu-tasks.2020.02.20a', 'srcu.2020.02.20a' and 'torture.2020.02.20a' into HEAD
doc.2020.02.27a: Documentation updates. fixes.2020.03.21a: Miscellaneous fixes. kfree_rcu.2020.02.20a: Updates to kfree_rcu(). locktorture.2020.02.20a: Lock torture-test updates. ovld.2020.02.20a: Updates to callback-overload handling. rcu-tasks.2020.02.20a: RCU-tasks updates. srcu.2020.02.20a: SRCU updates. torture.2020.02.20a: Torture-test updates. |
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Paul E. McKenney
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127e29815b |
rcu: Make rcu_barrier() account for offline no-CBs CPUs
Currently, rcu_barrier() ignores offline CPUs, However, it is possible
for an offline no-CBs CPU to have callbacks queued, and rcu_barrier()
must wait for those callbacks. This commit therefore makes rcu_barrier()
directly invoke the rcu_barrier_func() with interrupts disabled for such
CPUs. This requires passing the CPU number into this function so that
it can entrain the rcu_barrier() callback onto the correct CPU's callback
list, given that the code must instead execute on the current CPU.
While in the area, this commit fixes a bug where the first CPU's callback
might have been invoked before rcu_segcblist_entrain() returned, which
would also result in an early wakeup.
Fixes:
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Trond Myklebust
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78a947f50a |
sunrpc: Add tracing for cache events
Add basic tracing for debugging the sunrpc cache events. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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0dabe948f2 |
svcrdma: Avoid DMA mapping small RPC Replies
On some platforms, DMA mapping part of a page is more costly than copying bytes. Indeed, not involving the I/O MMU can help the RPC/RDMA transport scale better for tiny I/Os across more RDMA devices. This is because interaction with the I/O MMU is eliminated for each of these small I/Os. Without the explicit unmapping, the NIC no longer needs to do a costly internal TLB shoot down for buffers that are just a handful of bytes. Since pull-up is now a more a frequent operation, I've introduced a trace point in the pull-up path. It can be used for debugging or user-space tools that count pull-up frequency. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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a406c563e8 |
svcrdma: Rename svcrdma_encode trace points in send routines
These trace points are misnamed: trace_svcrdma_encode_wseg trace_svcrdma_encode_write trace_svcrdma_encode_reply trace_svcrdma_encode_rseg trace_svcrdma_encode_read trace_svcrdma_encode_pzr Because they actually trace posting on the Send Queue. Let's rename them so that I can add trace points in the chunk list encoders that actually do trace chunk list encoding events. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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e604aad2ca |
svcrdma: Use struct xdr_stream to decode ingress transport headers
The logic that checks incoming network headers has to be scrupulous. De-duplicate: replace open-coded buffer overflow checks with the use of xdr_stream helpers that are used most everywhere else XDR decoding is done. One minor change to the sanity checks: instead of checking the length of individual segments, cap the length of the whole chunk to be sure it can fit in the set of pages available in rq_pages. This should be a better test of whether the server can handle the chunks in each request. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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2426ddfdf1 |
svcrdma: Remove svcrdma_cm_event() trace point
Clean up. This trace point is no longer needed because the RDMA/core
CMA code has an equivalent trace point that was added by commit
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Chuck Lever
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b20dfc3fcd |
svcrdma: Create a generic tracing class for displaying xdr_buf layout
This class can be used to create trace points in either the RPC client or RPC server paths. It simply displays the length of each part of an xdr_buf, which is useful to determine that the transport and XDR codecs are operating correctly. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Chuck Lever
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28155524ea |
SUNRPC: Clean up: Replace dprintk and BUG_ON call sites in svcauth_gss.c
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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David Howells
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4636cf184d |
afs: Fix some tracing details
Fix a couple of tracelines to indicate the usage count after the atomic op,
not the usage count before it to be consistent with other afs and rxrpc
trace lines.
Change the wording of the afs_call_trace_work trace ID label from "WORK" to
"QUEUE" to reflect the fact that it's queueing work, not doing work.
Fixes:
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Rajan Shanmugavelu
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598a90f200 |
scsi: qla2xxx: add ring buffer for tracing debug logs
Having this log in a ring buffer helps to diagnose qla2xxx driver and firmware issues instead of having to reproduce the problem with extended_logging enabled. This saves cycles and helps when it is hard to reproduce problem. Link: https://lore.kernel.org/r/1581557368-32080-1-git-send-email-rajan.shanmugavelu@oracle.com Reviewed-by: Joe Jin <joe.jin@oracle.com> Acked-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Rajan Shanmugavelu <rajan.shanmugavelu@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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Thara Gopinath
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765047932f |
sched/pelt: Add support to track thermal pressure
Extrapolating on the existing framework to track rt/dl utilization using pelt signals, add a similar mechanism to track thermal pressure. The difference here from rt/dl utilization tracking is that, instead of tracking time spent by a CPU running a RT/DL task through util_avg, the average thermal pressure is tracked through load_avg. This is because thermal pressure signal is weighted time "delta" capacity unlike util_avg which is binary. "delta capacity" here means delta between the actual capacity of a CPU and the decreased capacity a CPU due to a thermal event. In order to track average thermal pressure, a new sched_avg variable avg_thermal is introduced. Function update_thermal_load_avg can be called to do the periodic bookkeeping (accumulate, decay and average) of the thermal pressure. Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20200222005213.3873-2-thara.gopinath@linaro.org |
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Yiwei Zhang
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bbd9d05618 |
gpu/trace: add a gpu total memory usage tracepoint
This change adds the below gpu memory tracepoint: gpu_mem/gpu_mem_total: track global or proc gpu memory total usages Per process tracking of total gpu memory usage in the gem layer is not appropriate and hard to implement with trivial overhead. So for the gfx device driver layer to track total gpu memory usage both globally and per process in an easy and uniform way is to integrate the tracepoint in this patch to the underlying varied implementations of gpu memory tracking system from vendors. Putting this tracepoint in the common trace events can not only help wean the gfx drivers off of debugfs but also greatly help the downstream Android gpu vendors because debugfs is to be deprecated in the upcoming Android release. Then the gpu memory tracking of both Android kernel and the upstream linux kernel can stay closely, which can benefit the whole kernel eco-system in the long term. Link: http://lkml.kernel.org/r/20200302235044.59163-1-zzyiwei@google.com Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Yiwei Zhang <zzyiwei@google.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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Jens Axboe
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d7718a9d25 |
io_uring: use poll driven retry for files that support it
Currently io_uring tries any request in a non-blocking manner, if it can, and then retries from a worker thread if we get -EAGAIN. Now that we have a new and fancy poll based retry backend, use that to retry requests if the file supports it. This means that, for example, an IORING_OP_RECVMSG on a socket no longer requires an async thread to complete the IO. If we get -EAGAIN reading from the socket in a non-blocking manner, we arm a poll handler for notification on when the socket becomes readable. When it does, the pending read is executed directly by the task again, through the io_uring task work handlers. Not only is this faster and more efficient, it also means we're not generating potentially tons of async threads that just sit and block, waiting for the IO to complete. The feature is marked with IORING_FEAT_FAST_POLL, meaning that async pollable IO is fast, and that poll<link>other_op is fast as well. Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Mel Gorman
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b2b2042b20 |
sched/numa: Distinguish between the different task_numa_migrate() failure cases
sched:sched_stick_numa is meant to fire when a task is unable to migrate to the preferred node but from the trace, it's possibile to tell the difference between "no CPU found", "migration to idle CPU failed" and "tasks could not be swapped". Extend the tracepoint accordingly. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> [ Minor edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Vincent Guittot <vincent.guittot@linaro.org> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: Phil Auld <pauld@redhat.com> Cc: Hillf Danton <hdanton@sina.com> Link: https://lore.kernel.org/r/20200224095223.13361-4-mgorman@techsingularity.net |
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Uladzislau Rezki (Sony)
|
613707929b |
rcu: Add a trace event for kfree_rcu() use of kfree_bulk()
The event is given three parameters, first one is the name of RCU flavour, second one is the number of elements in array for free and last one is an address of the array holding pointers to be freed by the kfree_bulk() function. To enable the trace event your kernel has to be build with CONFIG_RCU_TRACE=y, after that it is possible to track the events using ftrace subsystem. Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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Rafael J. Wysocki
|
333eed7d20 |
PM: QoS: Simplify definitions of CPU latency QoS trace events
Modify the definitions of the CPU latency QoS trace events to take one argument (since PM_QOS_CPU_DMA_LATENCY is always passed as the pm_qos_class argument to them) and update the documentation of them accordingly (while at it, make it explicitly mention CPU latency QoS and relocate it after the device PM QoS trace events documentation). The names and output format of the trace events do not change to preserve user space compatibility. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Tested-by: Amit Kucheria <amit.kucheria@linaro.org> |
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Rafael J. Wysocki
|
5a7ea52b6f |
PM: QoS: Drop pm_qos_update_request_timeout()
The pm_qos_update_request_timeout() function is not called from anywhere, so drop it along with the work member in struct pm_qos_request needed by it. Also drop the useless pm_qos_update_request_timeout trace event that is only triggered by that function (so it never triggers at all) and update the trace events documentation accordingly. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Tested-by: Amit Kucheria <amit.kucheria@linaro.org> |
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Linus Torvalds
|
eab3540562 |
ARM: SoC-related driver updates
Various driver updates for platforms:
- Nvidia: Fuse support for Tegra194, continued memory controller pieces
for Tegra30
- NXP/FSL: Refactorings of QuickEngine drivers to support ARM/ARM64/PPC
- NXP/FSL: i.MX8MP SoC driver pieces
- TI Keystone: ring accelerator driver
- Qualcomm: SCM driver cleanup/refactoring + support for new SoCs.
- Xilinx ZynqMP: feature checking interface for firmware. Mailbox
communication for power management
- Overall support patch set for cpuidle on more complex hierarchies
(PSCI-based)
+ Misc cleanups, refactorings of Marvell, TI, other platforms.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC-related driver updates from Olof Johansson:
"Various driver updates for platforms:
- Nvidia: Fuse support for Tegra194, continued memory controller
pieces for Tegra30
- NXP/FSL: Refactorings of QuickEngine drivers to support
ARM/ARM64/PPC
- NXP/FSL: i.MX8MP SoC driver pieces
- TI Keystone: ring accelerator driver
- Qualcomm: SCM driver cleanup/refactoring + support for new SoCs.
- Xilinx ZynqMP: feature checking interface for firmware. Mailbox
communication for power management
- Overall support patch set for cpuidle on more complex hierarchies
(PSCI-based)
and misc cleanups, refactorings of Marvell, TI, other platforms"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (166 commits)
drivers: soc: xilinx: Use mailbox IPI callback
dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox
drivers: soc: ti: knav_qmss_queue: Pass lockdep expression to RCU lists
MAINTAINERS: Add brcmstb PCIe controller entry
soc/tegra: fuse: Unmap registers once they are not needed anymore
soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
soc/tegra: fuse: Warn if straps are not ready
soc/tegra: fuse: Cache values of straps and Chip ID registers
memory: tegra30-emc: Correct error message for timed out auto calibration
memory: tegra30-emc: Firm up hardware programming sequence
memory: tegra30-emc: Firm up suspend/resume sequence
soc/tegra: regulators: Do nothing if voltage is unchanged
memory: tegra: Correct reset value of xusb_hostr
soc/tegra: fuse: Add APB DMA dependency for Tegra20
bus: tegra-aconnect: Remove PM_CLK dependency
dt-bindings: mediatek: add MT6765 power dt-bindings
soc: mediatek: cmdq: delete not used define
memory: tegra: Add support for the Tegra194 memory controller
memory: tegra: Only include support for enabled SoCs
memory: tegra: Support DVFS on Tegra186 and later
...
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Linus Torvalds
|
f43574d0ac |
NFS Client Updates for Linux 5.6
Stable bugfixes: - Fix memory leaks and corruption in readdir # v2.6.37+ - Directory page cache needs to be locked when read # v2.6.37+ New features: - Convert NFS to use the new mount API - Add "softreval" mount option to let clients use cache if server goes down - Add a config option to compile without UDP support - Limit the number of inactive delegations the client can cache at once - Improved readdir concurrency using iterate_shared() Other bugfixes and cleanups: - More 64-bit time conversions - Add additional diagnostic tracepoints - Check for holes in swapfiles, and add dependency on CONFIG_SWAP - Various xprtrdma cleanups to prepare for 5.7's changes - Several fixes for NFS writeback and commit handling - Fix acls over krb5i/krb5p mounts - Recover from premature loss of openstateids - Fix NFS v3 chacl and chmod bug - Compare creds using cred_fscmp() - Use kmemdup_nul() in more places - Optimize readdir cache page invalidation - Lease renewal and recovery fixes -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEnZ5MQTpR7cLU7KEp18tUv7ClQOsFAl48kMUACgkQ18tUv7Cl QOs/bA/+KAHaee+1jWdgRS88CnNDfeokU2sGWuyXWrVTmiKZ+IjnIUIWqmeKhVyg RTbaG4PGTIwiLDFibgzdnc3cTOQEgLnVGWWZ50Xh3b7ubock7+/4JHxqZS+/f3vf yqwM0dZaXi5Kcx1kEJ+niBxuzkc9mFI+nHh+wLIlin/kaaUdLKu7mP3NXj2cmWxN NoRaKc2gEvkPHhPSH4Z1DVXTHxvH2REFvt9APPUgfLfqcUVHV9b7V/wI/roiGWMn 53h6f38IdqoNQIpzMog/k/va67NLmEvUZOlpCYPyanPOjuxTrmi8iC2S6gLEOjtc GGnQnc5skVL31seFR1NbOJiiN3hTLTncnoXza0cKtYxmo7a/FjXApw4jCu3Rkrav UXpCI4O6+2AVVG+pEPbjQy3/GEImeoGvp+xr57jBSZBHoDZU9LDwag65qvZ1btIq KOBx2gweQz0aB2heXmfee7qzxFdftHmtMWhIMnJASKNuAWGL23Scqem+d97i2T6H 7y9OJ3aOXiYxFMLYJCsLWjUJxYiaIANNBmHMjf27mZzcdDuxGFms277CMpNPr3SU WZk6/oKw9jaRSzHzaKgVDXiULLXQE1/xZ/mvgR/zk1QAusyeXPvVnMdxoRdxFdXb QGZHgUqvFvYi8Lufvs+ZLGS4sAp7oD/Q+lNPXn7cniSwfY4uJiw= =b6+F -----END PGP SIGNATURE----- Merge tag 'nfs-for-5.6-1' of git://git.linux-nfs.org/projects/anna/linux-nfs Puyll NFS client updates from Anna Schumaker: "Stable bugfixes: - Fix memory leaks and corruption in readdir # v2.6.37+ - Directory page cache needs to be locked when read # v2.6.37+ New features: - Convert NFS to use the new mount API - Add "softreval" mount option to let clients use cache if server goes down - Add a config option to compile without UDP support - Limit the number of inactive delegations the client can cache at once - Improved readdir concurrency using iterate_shared() Other bugfixes and cleanups: - More 64-bit time conversions - Add additional diagnostic tracepoints - Check for holes in swapfiles, and add dependency on CONFIG_SWAP - Various xprtrdma cleanups to prepare for 5.7's changes - Several fixes for NFS writeback and commit handling - Fix acls over krb5i/krb5p mounts - Recover from premature loss of openstateids - Fix NFS v3 chacl and chmod bug - Compare creds using cred_fscmp() - Use kmemdup_nul() in more places - Optimize readdir cache page invalidation - Lease renewal and recovery fixes" * tag 'nfs-for-5.6-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (93 commits) NFSv4.0: nfs4_do_fsinfo() should not do implicit lease renewals NFSv4: try lease recovery on NFS4ERR_EXPIRED NFS: Fix memory leaks nfs: optimise readdir cache page invalidation NFS: Switch readdir to using iterate_shared() NFS: Use kmemdup_nul() in nfs_readdir_make_qstr() NFS: Directory page cache pages need to be locked when read NFS: Fix memory leaks and corruption in readdir SUNRPC: Use kmemdup_nul() in rpc_parse_scope_id() NFS: Replace various occurrences of kstrndup() with kmemdup_nul() NFSv4: Limit the total number of cached delegations NFSv4: Add accounting for the number of active delegations held NFSv4: Try to return the delegation immediately when marked for return on close NFS: Clear NFS_DELEGATION_RETURN_IF_CLOSED when the delegation is returned NFSv4: nfs_inode_evict_delegation() should set NFS_DELEGATION_RETURNING NFS: nfs_find_open_context() should use cred_fscmp() NFS: nfs_access_get_cached_rcu() should use cred_fscmp() NFSv4: pnfs_roc() must use cred_fscmp() to compare creds NFS: remove unused macros nfs: Return EINVAL rather than ERANGE for mount parse errors ... |
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|
Linus Torvalds
|
4c7d00ccf4 |
pwm: Changes for v5.6-rc1
This set of changes are mostly cleanups and minor improvements with some new chip support for some drivers. -----BEGIN PGP SIGNATURE----- iQJNBAABCAA3FiEEiOrDCAFJzPfAjcif3SOs138+s6EFAl46zmoZHHRoaWVycnku cmVkaW5nQGdtYWlsLmNvbQAKCRDdI6zXfz6zodGZEACQyt5Es8RbSMws6qmsZXSU XgVi1vCq3Mz51t2DMXp3PCe4Kb7MMTIn8nsFhQ6Q7z888ZCYC6auRTZ5kLNUZvwe guBqUR2+y2RkG0d9fWvf8xan2FqKuh33axX4YljNYI7lj79tyhQvHIC/B4DFes9y FnpvtDsFdVIFJmnDjgynWO5FhGbf7DdO6Mhmj99lQN3yMiUQ6RGmoXXrKoadcbNt vWGr5UqFY72PdVvMQFIA7U3ZeM5n8ocVI6TmvqHhX1ozLyB113yWXZr1hLH4LXzz f14NHygpo/GhB8ch3elxBZcXWPmPyn9tHxd2tYnlQ8whEY5RSD3C/bmVFMruhOLC LkcAmJ4mbk4tOVEoHB23vTcV5oxcVobDqIOj0W9n1pKWsx6Y3J31rIIg2BCPwSB2 o/xtFWafuvX9E90EVVM0H0mZSsxydZLXWOr17wzb1xlVulCpJCzvnhwJ8JXB6a0z 9/az3nGpOa6QB17IkR+sRkjVAnUFJ0CLHURIv+O7O+DBHVuykojdjpACzZcyy7kl 4ZrHhhCKwEbC4gjmtaJTgmQ0L/WGYfOBQKQmBKaQEJWXPUHsyJ4DFJjrIF4INqOe mS9BRvC0nRJ6g3ulOR95sVszMVrXKFUaMN6XqzyWzWPibdDk+1QR4EqU1QZQ/PgR 46RWEV02tG6SK65UzLqZxA== =x0aH -----END PGP SIGNATURE----- Merge tag 'pwm/for-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "Mostly cleanups and minor improvements with some new chip support for some drivers" * tag 'pwm/for-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (37 commits) pwm: Remove set but not set variable 'pwm' pwm: sun4i: Initialize variables before use pwm: stm32: Remove automatic output enable pwm: sun4i: Narrow scope of local variable pwm: bcm2835: Allow building for ARCH_BRCMSTB pwm: imx27: Eliminate error message for defer probe pwm: sun4i: Fix inconsistent IS_ERR and PTR_ERR pwm: sun4i: Move pwm_calculate() out of spin_lock() pwm: omap-dmtimer: Allow compiling with COMPILE_TEST pwm: omap-dmtimer: put_device() after of_find_device_by_node() pwm: omap-dmtimer: Simplify error handling pwm: omap-dmtimer: Remove PWM chip in .remove before making it unfunctional pwm: Implement tracing for .get_state() and .apply_state() pwm: rcar: Document inability to set duty_cycle = 0 pwm: rcar: Drop useless call to pwm_get_state() pwm: Fix minor Kconfig whitespace issues pwm: atmel: Implement .get_state() pwm: atmel: Use register accessors for channels pwm: atmel: Document known weaknesses of both hardware and software pwm: atmel: Replace loop in prescale calculation by ad-hoc calculation ... |
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Linus Torvalds
|
4fc2ea6a86 |
IOMMU Updates for Linux v5.6
Including: - Allow to compile the ARM-SMMU drivers as modules. - Fixes and cleanups for the ARM-SMMU drivers and io-pgtable code collected by Will Deacon. The merge-commit ( |
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Linus Torvalds
|
846de71bed |
media updates for v5.6-rc1
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Linus Torvalds
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8fdd4019bc |
RDMA subsystem updates for 5.6
- Driver updates and cleanup for qedr, bnxt_re, hns, siw, mlx5, mlx4, rxe,
i40iw
- Larger series doing cleanup and rework for hns and hfi1.
- Some general reworking of the CM code to make it a little more
understandable
- Unify the different code paths connected to the uverbs FD scheme
- New UAPI ioctls conversions for get context and get async fd
- Trace points for CQ and CM portions of the RDMA stack
- mlx5 driver support for virtio-net formatted rings as RDMA raw ethernet QPs
- verbs support for setting the PCI-E relaxed ordering bit on DMA traffic
connected to a MR
- A couple of bug fixes that came too late to make rc7
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"A very quiet cycle with few notable changes. Mostly the usual list of
one or two patches to drivers changing something that isn't quite rc
worthy. The subsystem seems to be seeing a larger number of rework and
cleanup style patches right now, I feel that several vendors are
prepping their drivers for new silicon.
Summary:
- Driver updates and cleanup for qedr, bnxt_re, hns, siw, mlx5, mlx4,
rxe, i40iw
- Larger series doing cleanup and rework for hns and hfi1.
- Some general reworking of the CM code to make it a little more
understandable
- Unify the different code paths connected to the uverbs FD scheme
- New UAPI ioctls conversions for get context and get async fd
- Trace points for CQ and CM portions of the RDMA stack
- mlx5 driver support for virtio-net formatted rings as RDMA raw
ethernet QPs
- verbs support for setting the PCI-E relaxed ordering bit on DMA
traffic connected to a MR
- A couple of bug fixes that came too late to make rc7"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (108 commits)
RDMA/core: Make the entire API tree static
RDMA/efa: Mask access flags with the correct optional range
RDMA/cma: Fix unbalanced cm_id reference count during address resolve
RDMA/umem: Fix ib_umem_find_best_pgsz()
IB/mlx4: Fix leak in id_map_find_del
IB/opa_vnic: Spelling correction of 'erorr' to 'error'
IB/hfi1: Fix logical condition in msix_request_irq
RDMA/cm: Remove CM message structs
RDMA/cm: Use IBA functions for complex structure members
RDMA/cm: Use IBA functions for simple structure members
RDMA/cm: Use IBA functions for swapping get/set acessors
RDMA/cm: Use IBA functions for simple get/set acessors
RDMA/cm: Add SET/GET implementations to hide IBA wire format
RDMA/cm: Add accessors for CM_REQ transport_type
IB/mlx5: Return the administrative GUID if exists
RDMA/core: Ensure that rdma_user_mmap_entry_remove() is a fence
IB/mlx4: Fix memory leak in add_gid error flow
IB/mlx5: Expose RoCE accelerator counters
RDMA/mlx5: Set relaxed ordering when requested
RDMA/core: Add the core support field to METHOD_GET_CONTEXT
...
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Linus Torvalds
|
7eec11d3a7 |
Merge branch 'akpm' (patches from Andrew)
Pull updates from Andrew Morton:
"Most of -mm and quite a number of other subsystems: hotfixes, scripts,
ocfs2, misc, lib, binfmt, init, reiserfs, exec, dma-mapping, kcov.
MM is fairly quiet this time. Holidays, I assume"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
kcov: ignore fault-inject and stacktrace
include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc()
execve: warn if process starts with executable stack
reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
init/main.c: fix misleading "This architecture does not have kernel memory protection" message
init/main.c: fix quoted value handling in unknown_bootoption
init/main.c: remove unnecessary repair_env_string in do_initcall_level
init/main.c: log arguments and environment passed to init
fs/binfmt_elf.c: coredump: allow process with empty address space to coredump
fs/binfmt_elf.c: coredump: delete duplicated overflow check
fs/binfmt_elf.c: coredump: allocate core ELF header on stack
fs/binfmt_elf.c: make BAD_ADDR() unlikely
fs/binfmt_elf.c: better codegen around current->mm
fs/binfmt_elf.c: don't copy ELF header around
fs/binfmt_elf.c: fix ->start_code calculation
fs/binfmt_elf.c: smaller code generation around auxv vector fill
lib/find_bit.c: uninline helper _find_next_bit()
lib/find_bit.c: join _find_next_bit{_le}
uapi: rename ext2_swab() to swab() and share globally in swab.h
lib/scatterlist.c: adjust indentation in __sg_alloc_table
...
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Junyong Sun
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7e168b9bab |
mm, tracing: print symbol name for kmem_alloc_node call_site events
Print the call_site ip of kmem_alloc_node using '%pS' to improve the readability of raw slab trace points. Link: http://lkml.kernel.org/r/1577949568-4518-1-git-send-email-sunjunyong@xiaomi.com Signed-off-by: Junyong Sun <sunjunyong@xiaomi.com> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Changbin Du <changbin.du@intel.com> Cc: Tim Murray <timmurray@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Theodore Ts'o
|
68f23b8906 |
memcg: fix a crash in wb_workfn when a device disappears
Without memcg, there is a one-to-one mapping between the bdi and bdi_writeback structures. In this world, things are fairly straightforward; the first thing bdi_unregister() does is to shutdown the bdi_writeback structure (or wb), and part of that writeback ensures that no other work queued against the wb, and that the wb is fully drained. With memcg, however, there is a one-to-many relationship between the bdi and bdi_writeback structures; that is, there are multiple wb objects which can all point to a single bdi. There is a refcount which prevents the bdi object from being released (and hence, unregistered). So in theory, the bdi_unregister() *should* only get called once its refcount goes to zero (bdi_put will drop the refcount, and when it is zero, release_bdi gets called, which calls bdi_unregister). Unfortunately, del_gendisk() in block/gen_hd.c never got the memo about the Brave New memcg World, and calls bdi_unregister directly. It does this without informing the file system, or the memcg code, or anything else. This causes the root wb associated with the bdi to be unregistered, but none of the memcg-specific wb's are shutdown. So when one of these wb's are woken up to do delayed work, they try to dereference their wb->bdi->dev to fetch the device name, but unfortunately bdi->dev is now NULL, thanks to the bdi_unregister() called by del_gendisk(). As a result, *boom*. Fortunately, it looks like the rest of the writeback path is perfectly happy with bdi->dev and bdi->owner being NULL, so the simplest fix is to create a bdi_dev_name() function which can handle bdi->dev being NULL. This also allows us to bulletproof the writeback tracepoints to prevent them from dereferencing a NULL pointer and crashing the kernel if one is tracing with memcg's enabled, and an iSCSI device dies or a USB storage stick is pulled. The most common way of triggering this will be hotremoval of a device while writeback with memcg enabled is going on. It was triggering several times a day in a heavily loaded production environment. Google Bug Id: 145475544 Link: https://lore.kernel.org/r/20191227194829.150110-1-tytso@mit.edu Link: http://lkml.kernel.org/r/20191228005211.163952-1-tytso@mit.edu Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: Chris Mason <clm@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
6e135baed8 |
f2fs-for-5.6
In this series, we've implemented transparent compression experimentally. It supports LZO and LZ4, but will add more later as we investigate in the field more. At this point, the feature doesn't expose compressed space to user directly in order to guarantee potential data updates later to the space. Instead, the main goal is to reduce data writes to flash disk as much as possible, resulting in extending disk life time as well as relaxing IO congestion. Alternatively, we're also considering to add ioctl() to reclaim compressed space and show it to user after putting the immutable bit. Enhancement: - add compression support - avoid unnecessary locks in quota ops - harden power-cut scenario for zoned block devices - use private bio_set to avoid IO congestion - replace GC mutex with rwsem to serialize callers Bug fix: - fix dentry consistency and memory corruption in rename()'s error case - fix wrong swap extent reports - fix casefolding bugs - change lock coverage to avoid deadlock - avoid GFP_KERNEL under f2fs_lock_op And, we've cleaned up sysfs entries to prepare no debugfs. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE00UqedjCtOrGVvQiQBSofoJIUNIFAl4zInwACgkQQBSofoJI UNL4Tg/+JBbVEFa3IUBGMdbjfgd/g0Jye++iMAYYGRWT6Ll/IGcHRV9NunITjgWU mBZqdhI28kXeiGCcewB1ZvivjLx22X4n6yevHk2B5A6PNe9IDCHi0HOAhJJHkjPH ecv2L+vX3Oj4y0+H7JNz9Fo3OIPJvMPtCQWlg1z+VQyhB85zNP7fZlvvIY4tG8yw ERo0YNotLqwcF1BxCwNbAhV3aJGDxar+MI//yNzpiwDX7IptVpqestfcoIYc9kKL 4kSWRyEIGwcuIeyoM6aofGS9t4Z/Oe/gdqcxNr6l5n0Q/tMTpb4b/fJFGNr6RRx9 X9NQo8flkQb2DEIOP0DVpO2aPebzsVtzg3LZUOLA83+wCHfwINtHai2Dy2zDJ2my BrVdou8fe2oxoaYihJg/Tz9cd0nA/6mZArtpYvDImAmX/xuGOvVk9zZkXNwc9nVX EyVzy0vW4lA6gAIJ95aG6DDhJcAtVoy0MhBRWG92Pufxhn9aW24AV63ChWUf9DRx /3RqpMAuQ3UC2gOxXKKnr54lsdhUIMn/y9sjROkVvQ1BvgRVxO8I4GFvMHMKv9pR 9KXiVRdzyYERyoL4+MF7A2zTnw+RHL4RVILa85p2ALGy2jQ1UuNUQi0BN9x2u1v8 S1ifNNX8SwOP+83ImFJhhn3HybpFQ45aLO3F7ZjKBQAnufJu+xw= =zeoY -----END PGP SIGNATURE----- Merge tag 'f2fs-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "In this series, we've implemented transparent compression experimentally. It supports LZO and LZ4, but will add more later as we investigate in the field more. At this point, the feature doesn't expose compressed space to user directly in order to guarantee potential data updates later to the space. Instead, the main goal is to reduce data writes to flash disk as much as possible, resulting in extending disk life time as well as relaxing IO congestion. Alternatively, we're also considering to add ioctl() to reclaim compressed space and show it to user after putting the immutable bit. Enhancements: - add compression support - avoid unnecessary locks in quota ops - harden power-cut scenario for zoned block devices - use private bio_set to avoid IO congestion - replace GC mutex with rwsem to serialize callers Bug fixes: - fix dentry consistency and memory corruption in rename()'s error case - fix wrong swap extent reports - fix casefolding bugs - change lock coverage to avoid deadlock - avoid GFP_KERNEL under f2fs_lock_op And, we've cleaned up sysfs entries to prepare no debugfs" * tag 'f2fs-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (31 commits) f2fs: fix race conditions in ->d_compare() and ->d_hash() f2fs: fix dcache lookup of !casefolded directories f2fs: Add f2fs stats to sysfs f2fs: delete duplicate information on sysfs nodes f2fs: change to use rwsem for gc_mutex f2fs: update f2fs document regarding to fsync_mode f2fs: add a way to turn off ipu bio cache f2fs: code cleanup for f2fs_statfs_project() f2fs: fix miscounted block limit in f2fs_statfs_project() f2fs: show the CP_PAUSE reason in checkpoint traces f2fs: fix deadlock allocating bio_post_read_ctx from mempool f2fs: remove unneeded check for error allocating bio_post_read_ctx f2fs: convert inline_dir early before starting rename f2fs: fix memleak of kobject f2fs: fix to add swap extent correctly f2fs: run fsck when getting bad inode during GC f2fs: support data compression f2fs: free sysfs kobject f2fs: declare nested quota_sem and remove unnecessary sems f2fs: don't put new_page twice in f2fs_rename ... |
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Linus Torvalds
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e5da4c933c |
This merge window, we've added some performance improvements in how we
handle inode locking in the read/write paths, and improving the performance of Direct I/O overwrites. We also now record the error code which caused the first and most recent ext4_error() report in the superblock, to make it easier to root cause problems in production systems. There are also many of the usual cleanups and miscellaneous bug fixes. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAl4yBf0ACgkQ8vlZVpUN gaOK8Af9EsY1vyR/IvEosfXJoKIqnTXN1SLt94iAOUh6dNeVNcyv1SIzRGFrpmsg uHY02EkcTl68b/AjV7ieDpOnOSmlP7NzynuVoar2hrjKX0MzpEu03Vv1a3dUQKuU zcdchi83EwRjEvegsNK/VF3FFadk3TtC7x+7o6p840V6OAyp5CXhjm1akJqIJwvd A4gTpruTSRIFg6Jj36HEDNRgSAeILed3wC7Ywtxt51tLK7Lp/qB1EuvYodMQRvGz d0fRhbNHKepVYfxwpDUDMFnrqDPZ/SZGF73XBxP2zHd6SXy9dBLzGsRL+oj9tTUg YQJtt4Yxjjg8Q1UrMyMRzQpi4S8dAQ== =pVeR -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "This merge window, we've added some performance improvements in how we handle inode locking in the read/write paths, and improving the performance of Direct I/O overwrites. We also now record the error code which caused the first and most recent ext4_error() report in the superblock, to make it easier to root cause problems in production systems. There are also many of the usual cleanups and miscellaneous bug fixes" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (49 commits) jbd2: clean __jbd2_journal_abort_hard() and __journal_abort_soft() jbd2: make sure ESHUTDOWN to be recorded in the journal superblock ext4, jbd2: ensure panic when aborting with zero errno jbd2: switch to use jbd2_journal_abort() when failed to submit the commit record jbd2_seq_info_next should increase position index jbd2: remove pointless assertion in __journal_remove_journal_head ext4,jbd2: fix comment and code style jbd2: delete the duplicated words in the comments ext4: fix extent_status trace points ext4: fix symbolic enum printing in trace output ext4: choose hardlimit when softlimit is larger than hardlimit in ext4_statfs_project() ext4: fix race conditions in ->d_compare() and ->d_hash() ext4: make dioread_nolock the default ext4: fix extent_status fragmentation for plain files jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal ext4: drop ext4_kvmalloc() ext4: Add EXT4_IOC_FSGETXATTR/EXT4_IOC_FSSETXATTR to compat_ioctl ext4: remove unused macro MPAGE_DA_EXTENT_TAIL ext4: add missing braces in ext4_ext_drop_refs() ext4: fix some nonstandard indentation in extents.c ... |
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Linus Torvalds
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896f8d23d0 |
for-5.6/io_uring-vfs-2020-01-29
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Linus Torvalds
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bd2463ac7d |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from David Miller:
1) Add WireGuard
2) Add HE and TWT support to ath11k driver, from John Crispin.
3) Add ESP in TCP encapsulation support, from Sabrina Dubroca.
4) Add variable window congestion control to TIPC, from Jon Maloy.
5) Add BCM84881 PHY driver, from Russell King.
6) Start adding netlink support for ethtool operations, from Michal
Kubecek.
7) Add XDP drop and TX action support to ena driver, from Sameeh
Jubran.
8) Add new ipv4 route notifications so that mlxsw driver does not have
to handle identical routes itself. From Ido Schimmel.
9) Add BPF dynamic program extensions, from Alexei Starovoitov.
10) Support RX and TX timestamping in igc, from Vinicius Costa Gomes.
11) Add support for macsec HW offloading, from Antoine Tenart.
12) Add initial support for MPTCP protocol, from Christoph Paasch,
Matthieu Baerts, Florian Westphal, Peter Krystad, and many others.
13) Add Octeontx2 PF support, from Sunil Goutham, Geetha sowjanya, Linu
Cherian, and others.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1469 commits)
net: phy: add default ARCH_BCM_IPROC for MDIO_BCM_IPROC
udp: segment looped gso packets correctly
netem: change mailing list
qed: FW 8.42.2.0 debug features
qed: rt init valid initialization changed
qed: Debug feature: ilt and mdump
qed: FW 8.42.2.0 Add fw overlay feature
qed: FW 8.42.2.0 HSI changes
qed: FW 8.42.2.0 iscsi/fcoe changes
qed: Add abstraction for different hsi values per chip
qed: FW 8.42.2.0 Additional ll2 type
qed: Use dmae to write to widebus registers in fw_funcs
qed: FW 8.42.2.0 Parser offsets modified
qed: FW 8.42.2.0 Queue Manager changes
qed: FW 8.42.2.0 Expose new registers and change windows
qed: FW 8.42.2.0 Internal ram offsets modifications
MAINTAINERS: Add entry for Marvell OcteonTX2 Physical Function driver
Documentation: net: octeontx2: Add RVU HW and drivers overview
octeontx2-pf: ethtool RSS config support
octeontx2-pf: Add basic ethtool support
...
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Linus Torvalds
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81a046b18b |
for-5.6-tag
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Merge tag 'for-5.6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"Features, highlights:
- async discard
- "mount -o discard=async" to enable it
- freed extents are not discarded immediatelly, but grouped
together and trimmed later, with IO rate limiting
- the "sync" mode submits short extents that could have been
ignored completely by the device, for SATA prior to 3.1 the
requests are unqueued and have a big impact on performance
- the actual discard IO requests have been moved out of
transaction commit to a worker thread, improving commit latency
- IO rate and request size can be tuned by sysfs files, for now
enabled only with CONFIG_BTRFS_DEBUG as we might need to
add/delete the files and don't have a stable-ish ABI for
general use, defaults are conservative
- export device state info in sysfs, eg. missing, writeable
- no discard of extents known to be untouched on disk (eg. after
reservation)
- device stats reset is logged with process name and PID that called
the ioctl
Fixes:
- fix missing hole after hole punching and fsync when using NO_HOLES
- writeback: range cyclic mode could miss some dirty pages and lead
to OOM
- two more corner cases for metadata_uuid change after power loss
during the change
- fix infinite loop during fsync after mix of rename operations
Core changes:
- qgroup assign returns ENOTCONN when quotas not enabled, used to
return EINVAL that was confusing
- device closing does not need to allocate memory anymore
- snapshot aware code got removed, disabled for years due to
performance problems, reimplmentation will allow to select wheter
defrag breaks or does not break COW on shared extents
- tree-checker:
- check leaf chunk item size, cross check against number of
stripes
- verify location keys for DIR_ITEM, DIR_INDEX and XATTR items
- new self test for physical -> logical mapping code, used for super
block range exclusion
- assertion helpers/macros updated to avoid objtool "unreachable
code" reports on older compilers or config option combinations"
* tag 'for-5.6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (84 commits)
btrfs: free block groups after free'ing fs trees
btrfs: Fix split-brain handling when changing FSID to metadata uuid
btrfs: Handle another split brain scenario with metadata uuid feature
btrfs: Factor out metadata_uuid code from find_fsid.
btrfs: Call find_fsid from find_fsid_inprogress
Btrfs: fix infinite loop during fsync after rename operations
btrfs: set trans->drity in btrfs_commit_transaction
btrfs: drop log root for dropped roots
btrfs: sysfs, add devid/dev_state kobject and device attributes
btrfs: Refactor btrfs_rmap_block to improve readability
btrfs: Add self-tests for btrfs_rmap_block
btrfs: selftests: Add support for dummy devices
btrfs: Move and unexport btrfs_rmap_block
btrfs: separate definition of assertion failure handlers
btrfs: device stats, log when stats are zeroed
btrfs: fix improper setting of scanned for range cyclic write cache pages
btrfs: safely advance counter when looking up bio csums
btrfs: remove unused member btrfs_device::work
btrfs: remove unnecessary wrapper get_alloc_profile
btrfs: add correction to handle -1 edge case in async discard
...
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Linus Torvalds
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c0e809e244 |
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
"Kernel side changes:
- Ftrace is one of the last W^X violators (after this only KLP is
left). These patches move it over to the generic text_poke()
interface and thereby get rid of this oddity. This requires a
surprising amount of surgery, by Peter Zijlstra.
- x86/AMD PMUs: add support for 'Large Increment per Cycle Events' to
count certain types of events that have a special, quirky hw ABI
(by Kim Phillips)
- kprobes fixes by Masami Hiramatsu
Lots of tooling updates as well, the following subcommands were
updated: annotate/report/top, c2c, clang, record, report/top TUI,
sched timehist, tests; plus updates were done to the gtk ui, libperf,
headers and the parser"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (57 commits)
perf/x86/amd: Add support for Large Increment per Cycle Events
perf/x86/amd: Constrain Large Increment per Cycle events
perf/x86/intel/rapl: Add Comet Lake support
tracing: Initialize ret in syscall_enter_define_fields()
perf header: Use last modification time for timestamp
perf c2c: Fix return type for histogram sorting comparision functions
perf beauty sockaddr: Fix augmented syscall format warning
perf/ui/gtk: Fix gtk2 build
perf ui gtk: Add missing zalloc object
perf tools: Use %define api.pure full instead of %pure-parser
libperf: Setup initial evlist::all_cpus value
perf report: Fix no libunwind compiled warning break s390 issue
perf tools: Support --prefix/--prefix-strip
perf report: Clarify in help that --children is default
tools build: Fix test-clang.cpp with Clang 8+
perf clang: Fix build with Clang 9
kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic
tools lib: Fix builds when glibc contains strlcpy()
perf report/top: Make 'e' visible in the help and make it toggle showing callchains
perf report/top: Do not offer annotation for symbols without samples
...
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Linus Torvalds
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d99391ec2b |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar: "The RCU changes in this cycle were: - Expedited grace-period updates - kfree_rcu() updates - RCU list updates - Preemptible RCU updates - Torture-test updates - Miscellaneous fixes - Documentation updates" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (69 commits) rcu: Remove unused stop-machine #include powerpc: Remove comment about read_barrier_depends() .mailmap: Add entries for old paulmck@kernel.org addresses srcu: Apply *_ONCE() to ->srcu_last_gp_end rcu: Switch force_qs_rnp() to for_each_leaf_node_cpu_mask() rcu: Move rcu_{expedited,normal} definitions into rcupdate.h rcu: Move gp_state_names[] and gp_state_getname() to tree_stall.h rcu: Remove the declaration of call_rcu() in tree.h rcu: Fix tracepoint tracking RCU CPU kthread utilization rcu: Fix harmless omission of "CONFIG_" from #if condition rcu: Avoid tick_dep_set_cpu() misordering rcu: Provide wrappers for uses of ->rcu_read_lock_nesting rcu: Use READ_ONCE() for ->expmask in rcu_read_unlock_special() rcu: Clear ->rcu_read_unlock_special only once rcu: Clear .exp_hint only when deferred quiescent state has been reported rcu: Rename some instance of CONFIG_PREEMPTION to CONFIG_PREEMPT_RCU rcu: Remove kfree_call_rcu_nobatch() rcu: Remove kfree_rcu() special casing and lazy-callback handling rcu: Add support for debug_objects debugging for kfree_rcu() rcu: Add multiple in-flight batches of kfree_rcu() work ... |
|
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Linus Torvalds
|
16d06120d7 |
Merge branch 'for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue updates from Tejun Heo: "Just a couple tracepoint patches" * 'for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: remove workqueue_work event class workqueue: add worker function to workqueue_execute_end tracepoint |
|
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Linus Torvalds
|
22a8f39c52 |
for-5.6/drivers-2020-01-27
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Merge tag 'for-5.6/drivers-2020-01-27' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
"Like the core side, not a lot of changes here, just two main items:
- Series of patches (via Coly) with fixes for bcache (Coly,
Christoph)
- MD pull request from Song"
* tag 'for-5.6/drivers-2020-01-27' of git://git.kernel.dk/linux-block: (31 commits)
bcache: reap from tail of c->btree_cache in bch_mca_scan()
bcache: reap c->btree_cache_freeable from the tail in bch_mca_scan()
bcache: remove member accessed from struct btree
bcache: print written and keys in trace_bcache_btree_write
bcache: avoid unnecessary btree nodes flushing in btree_flush_write()
bcache: add code comments for state->pool in __btree_sort()
lib: crc64: include <linux/crc64.h> for 'crc64_be'
bcache: use read_cache_page_gfp to read the superblock
bcache: store a pointer to the on-disk sb in the cache and cached_dev structures
bcache: return a pointer to the on-disk sb from read_super
bcache: transfer the sb_page reference to register_{bdev,cache}
bcache: fix use-after-free in register_bcache()
bcache: properly initialize 'path' and 'err' in register_bcache()
bcache: rework error unwinding in register_bcache
bcache: use a separate data structure for the on-disk super block
bcache: cached_dev_free needs to put the sb page
md/raid1: introduce wait_for_serialization
md/raid1: use bucket based mechanism for IO serialization
md: introduce a new struct for IO serialization
md: don't destroy serial_info_pool if serialize_policy is true
...
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Linus Torvalds
|
6d277aca48 |
Power management updates for 5.6-rc1
- Update the ACPI processor driver in order to export
acpi_processor_evaluate_cst() to the code outside of it, add
ACPI support to the intel_idle driver based on that and clean
up that driver somewhat (Rafael Wysocki).
- Add an admin guide document for the intel_idle driver (Rafael
Wysocki).
- Clean up cpuidle core and drivers, enable compilation testing
for some of them (Benjamin Gaignard, Krzysztof Kozlowski, Rafael
Wysocki, Yangtao Li).
- Fix reference counting of OPP (operating performance points) table
structures (Viresh Kumar).
- Add support for CPR (Core Power Reduction) to the AVS (Adaptive
Voltage Scaling) subsystem (Niklas Cassel, Colin Ian King,
YueHaibing).
- Add support for TigerLake Mobile and JasperLake to the Intel RAPL
power capping driver (Zhang Rui).
- Update cpufreq drivers:
* Add i.MX8MP support to imx-cpufreq-dt (Anson Huang).
* Fix usage of a macro in loongson2_cpufreq (Alexandre Oliva).
* Fix cpufreq policy reference counting issues in s3c and
brcmstb-avs (chenqiwu).
* Fix ACPI table reference counting issue and HiSilicon quirk
handling in the CPPC driver (Hanjun Guo).
* Clean up spelling mistake in intel_pstate (Harry Pan).
* Convert the kirkwood and tegra186 drivers to using
devm_platform_ioremap_resource() (Yangtao Li).
- Update devfreq core:
* Add 'name' sysfs attribute for devfreq devices (Chanwoo Choi).
* Clean up the handing of transition statistics and allow them
to be reset by writing 0 to the 'trans_stat' devfreq device
attribute in sysfs (Kamil Konieczny).
* Add 'devfreq_summary' to debugfs (Chanwoo Choi).
* Clean up kerneldoc comments and Kconfig indentation (Krzysztof
Kozlowski, Randy Dunlap).
- Update devfreq drivers:
* Add dynamic scaling for the imx8m DDR controller and clean up
imx8m-ddrc (Leonard Crestez, YueHaibing).
* Fix DT node reference counting and nitialization error code path
in rk3399_dmc and add COMPILE_TEST and HAVE_ARM_SMCCC dependency
for it (Chanwoo Choi, Yangtao Li).
* Fix DT node reference counting in rockchip-dfi and make it use
devm_platform_ioremap_resource() (Yangtao Li).
* Fix excessive stack usage in exynos-ppmu (Arnd Bergmann).
* Fix initialization error code paths in exynos-bus (Yangtao Li).
* Clean up exynos-bus and exynos somewhat (Artur Świgoń, Krzysztof
Kozlowski).
- Add tracepoints for tracking usage_count updates unrelated to
status changes in PM-runtime (Michał Mirosław).
- Add sysfs attribute to control the "sync on suspend" behavior
during system-wide suspend (Jonas Meurer).
- Switch system-wide suspend tests over to 64-bit time (Alexandre
Belloni).
- Make wakeup sources statistics in debugfs cover deleted ones which
used to be the case some time ago (zhuguangqing).
- Clean up computations carried out during hibernation, update
messages related to hibernation and fix a spelling mistake in one
of them (Wen Yang, Luigi Semenzato, Colin Ian King).
- Add mailmap entry for maintainer e-mail address that has not been
functional for several years (Rafael Wysocki).
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Merge tag 'pm-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These add ACPI support to the intel_idle driver along with an admin
guide document for it, add support for CPR (Core Power Reduction) to
the AVS (Adaptive Voltage Scaling) subsystem, add new hardware support
in a few places, add some new sysfs attributes, debugfs files and
tracepoints, fix bugs and clean up a bunch of things all over.
Specifics:
- Update the ACPI processor driver in order to export
acpi_processor_evaluate_cst() to the code outside of it, add ACPI
support to the intel_idle driver based on that and clean up that
driver somewhat (Rafael Wysocki).
- Add an admin guide document for the intel_idle driver (Rafael
Wysocki).
- Clean up cpuidle core and drivers, enable compilation testing for
some of them (Benjamin Gaignard, Krzysztof Kozlowski, Rafael
Wysocki, Yangtao Li).
- Fix reference counting of OPP (operating performance points) table
structures (Viresh Kumar).
- Add support for CPR (Core Power Reduction) to the AVS (Adaptive
Voltage Scaling) subsystem (Niklas Cassel, Colin Ian King,
YueHaibing).
- Add support for TigerLake Mobile and JasperLake to the Intel RAPL
power capping driver (Zhang Rui).
- Update cpufreq drivers:
- Add i.MX8MP support to imx-cpufreq-dt (Anson Huang).
- Fix usage of a macro in loongson2_cpufreq (Alexandre Oliva).
- Fix cpufreq policy reference counting issues in s3c and
brcmstb-avs (chenqiwu).
- Fix ACPI table reference counting issue and HiSilicon quirk
handling in the CPPC driver (Hanjun Guo).
- Clean up spelling mistake in intel_pstate (Harry Pan).
- Convert the kirkwood and tegra186 drivers to using
devm_platform_ioremap_resource() (Yangtao Li).
- Update devfreq core:
- Add 'name' sysfs attribute for devfreq devices (Chanwoo Choi).
- Clean up the handing of transition statistics and allow them to
be reset by writing 0 to the 'trans_stat' devfreq device
attribute in sysfs (Kamil Konieczny).
- Add 'devfreq_summary' to debugfs (Chanwoo Choi).
- Clean up kerneldoc comments and Kconfig indentation (Krzysztof
Kozlowski, Randy Dunlap).
- Update devfreq drivers:
- Add dynamic scaling for the imx8m DDR controller and clean up
imx8m-ddrc (Leonard Crestez, YueHaibing).
- Fix DT node reference counting and nitialization error code path
in rk3399_dmc and add COMPILE_TEST and HAVE_ARM_SMCCC dependency
for it (Chanwoo Choi, Yangtao Li).
- Fix DT node reference counting in rockchip-dfi and make it use
devm_platform_ioremap_resource() (Yangtao Li).
- Fix excessive stack usage in exynos-ppmu (Arnd Bergmann).
- Fix initialization error code paths in exynos-bus (Yangtao Li).
- Clean up exynos-bus and exynos somewhat (Artur Świgoń, Krzysztof
Kozlowski).
- Add tracepoints for tracking usage_count updates unrelated to
status changes in PM-runtime (Michał Mirosław).
- Add sysfs attribute to control the "sync on suspend" behavior
during system-wide suspend (Jonas Meurer).
- Switch system-wide suspend tests over to 64-bit time (Alexandre
Belloni).
- Make wakeup sources statistics in debugfs cover deleted ones which
used to be the case some time ago (zhuguangqing).
- Clean up computations carried out during hibernation, update
messages related to hibernation and fix a spelling mistake in one
of them (Wen Yang, Luigi Semenzato, Colin Ian King).
- Add mailmap entry for maintainer e-mail address that has not been
functional for several years (Rafael Wysocki)"
* tag 'pm-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (83 commits)
cpufreq: loongson2_cpufreq: adjust cpufreq uses of LOONGSON_CHIPCFG
intel_idle: Clean up irtl_2_usec()
intel_idle: Move 3 functions closer to their callers
intel_idle: Annotate initialization code and data structures
intel_idle: Move and clean up intel_idle_cpuidle_devices_uninit()
intel_idle: Rearrange intel_idle_cpuidle_driver_init()
intel_idle: Clean up NULL pointer check in intel_idle_init()
intel_idle: Fold intel_idle_probe() into intel_idle_init()
intel_idle: Eliminate __setup_broadcast_timer()
cpuidle: fix cpuidle_find_deepest_state() kerneldoc warnings
cpuidle: sysfs: fix warnings when compiling with W=1
cpuidle: coupled: fix warnings when compiling with W=1
cpufreq: brcmstb-avs: fix imbalance of cpufreq policy refcount
PM: suspend: Add sysfs attribute to control the "sync on suspend" behavior
PM / devfreq: Add debugfs support with devfreq_summary file
Documentation: admin-guide: PM: Add intel_idle document
cpuidle: arm: Enable compile testing for some of drivers
PM-runtime: add tracepoints for usage_count changes
cpufreq: intel_pstate: fix spelling mistake: "Whethet" -> "Whether"
PM: hibernate: fix spelling mistake "shapshot" -> "snapshot"
...
|
|
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Rafael J. Wysocki
|
c95d9c140c |
Merge branches 'pm-core', 'powercap', 'pm-opp', 'pm-avs' and 'pm-misc'
* pm-core: PM-runtime: add tracepoints for usage_count changes * powercap: powercap/intel_rapl: add support for JasperLake x86/cpu: Add Jasper Lake to Intel family powercap/intel_rapl: add support for TigerLake Mobile * pm-opp: opp: Replace list_kref with a local counter opp: Free static OPPs on errors while adding them * pm-avs: power: avs: qcom-cpr: remove duplicated include from qcom-cpr.c power: avs: fix uninitialized error return on failed cpr_read_fuse_uV() call power: avs: qcom-cpr: make cpr_get_opp_hz_for_req() static power: avs: qcom-cpr: remove set but unused variable power: avs: qcom-cpr: make sure that regmap is available power: avs: qcom-cpr: fix unsigned expression compared with zero power: avs: qcom-cpr: fix invalid printk specifier in debug print power: avs: Add support for CPR (Core Power Reduction) dt-bindings: power: avs: Add support for CPR (Core Power Reduction) * pm-misc: mailmap: Add entry for <rjw@sisk.pl> |
|
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David S. Miller
|
4d8773b68e |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflict in mlx5 because changes happened to code that has moved meanwhile. Signed-off-by: David S. Miller <davem@davemloft.net> |
|
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Ingo Molnar
|
f8a4bb6bfa |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney: - Expedited grace-period updates - kfree_rcu() updates - RCU list updates - Preemptible RCU updates - Torture-test updates - Miscellaneous fixes - Documentation updates Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
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Dmitry Monakhov
|
52144d893d |
ext4: fix extent_status trace points
Show pblock only if it has meaningful value. # before ext4:ext4_es_lookup_extent_exit: dev 253,0 ino 12 found 1 [1/4294967294) 576460752303423487 H ext4:ext4_es_lookup_extent_exit: dev 253,0 ino 12 found 1 [2/4294967293) 576460752303423487 HR # after ext4:ext4_es_lookup_extent_exit: dev 253,0 ino 12 found 1 [1/4294967294) 0 H ext4:ext4_es_lookup_extent_exit: dev 253,0 ino 12 found 1 [2/4294967293) 0 HR Signed-off-by: Dmitry Monakhov <dmonakhov@gmail.com> Link: https://lore.kernel.org/r/20191114200147.1073-2-dmonakhov@gmail.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
|
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Dmitry Monakhov
|
459c80742e |
ext4: fix symbolic enum printing in trace output
Trace's macro __print_flags() produce raw event's decraration w/o knowing actual
flags value
cat /sys/kernel/debug/tracing/events/ext4/ext4_ext_map_blocks_exit/format
..
__print_flags(REC->mflags, "", { (1 << BH_New),
For that reason we have to explicitly define it via special macro TRACE_DEFINE_ENUM()
Also add missed EXTENT_STATUS_REFERENCED flag.
#Before patch
ext4:ext4_ext_map_blocks_exit: dev 253,0 ino 2 flags lblk 0 pblk 4177 len 1 mflags 0x20 ret 1
ext4:ext4_ext_map_blocks_exit: dev 253,0 ino 12 flags CREATE lblk 0 pblk 34304 len 1 mflags 0x60 ret 1
#With patch
ext4:ext4_ext_map_blocks_exit: dev 253,0 ino 2 flags lblk 0 pblk 4177 len 1 mflags M ret 1
ext4:ext4_ext_map_blocks_exit: dev 253,0 ino 12 flags CREATE lblk 0 pblk 34816 len 1 mflags NM ret 1
Signed-off-by: Dmitry Monakhov <dmonakhov@gmail.com>
Link: https://lore.kernel.org/r/20191114200147.1073-1-dmonakhov@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
|
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Paul E. McKenney
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0e247386d9 |
Merge branches 'doc.2019.12.10a', 'exp.2019.12.09a', 'fixes.2020.01.24a', 'kfree_rcu.2020.01.24a', 'list.2020.01.10a', 'preempt.2020.01.24a' and 'torture.2019.12.09a' into HEAD
doc.2019.12.10a: Documentations updates exp.2019.12.09a: Expedited grace-period updates fixes.2020.01.24a: Miscellaneous fixes kfree_rcu.2020.01.24a: Batch kfree_rcu() work list.2020.01.10a: RCU-protected-list updates preempt.2020.01.24a: Preemptible RCU updates torture.2019.12.09a: Torture-test updates |
|
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Joel Fernandes (Google)
|
77a40f9703 |
rcu: Remove kfree_rcu() special casing and lazy-callback handling
This commit removes kfree_rcu() special-casing and the lazy-callback handling from Tree RCU. It moves some of this special casing to Tiny RCU, the removal of which will be the subject of later commits. This results in a nice negative delta. Suggested-by: Paul E. McKenney <paulmck@linux.ibm.com> Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> [ paulmck: Add slab.h #include, thanks to kbuild test robot <lkp@intel.com>. ] Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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Joerg Roedel
|
e3b5ee0cfb | Merge branches 'iommu/fixes', 'arm/smmu', 'x86/amd', 'x86/vt-d' and 'core' into next | |
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Linus Torvalds
|
34597c85be |
Various tracing fixes:
- Fix a function comparison warning for a xen trace event macro
- Fix a double perf_event linking to a trace_uprobe_filter for multiple events
- Fix suspicious RCU warnings in trace event code for using
list_for_each_entry_rcu() when the "_rcu" portion wasn't needed.
- Fix a bug in the histogram code when using the same variable
- Fix a NULL pointer dereference when tracefs lockdown enabled and calling
trace_set_default_clock()
This v2 version contains:
- A fix to a bug found with the double perf_event linking patch
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Merge tag 'trace-v5.5-rc6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Various tracing fixes:
- Fix a function comparison warning for a xen trace event macro
- Fix a double perf_event linking to a trace_uprobe_filter for
multiple events
- Fix suspicious RCU warnings in trace event code for using
list_for_each_entry_rcu() when the "_rcu" portion wasn't needed.
- Fix a bug in the histogram code when using the same variable
- Fix a NULL pointer dereference when tracefs lockdown enabled and
calling trace_set_default_clock()
- A fix to a bug found with the double perf_event linking patch"
* tag 'trace-v5.5-rc6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing/uprobe: Fix to make trace_uprobe_filter alignment safe
tracing: Do not set trace clock if tracefs lockdown is in effect
tracing: Fix histogram code when expression has same var as value
tracing: trigger: Replace unneeded RCU-list traversals
tracing/uprobe: Fix double perf_event linking on multiprobe uprobe
tracing: xen: Ordered comparison of function pointers
|
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Guoju Fang
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d44330b7f1 |
bcache: print written and keys in trace_bcache_btree_write
It's useful to dump written block and keys on btree write, this patch add them into trace_bcache_btree_write. Signed-off-by: Guoju Fang <fangguoju@gmail.com> Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
|
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David S. Miller
|
954b3c4397 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says: ==================== pull-request: bpf-next 2020-01-22 The following pull-request contains BPF updates for your *net-next* tree. We've added 92 non-merge commits during the last 16 day(s) which contain a total of 320 files changed, 7532 insertions(+), 1448 deletions(-). The main changes are: 1) function by function verification and program extensions from Alexei. 2) massive cleanup of selftests/bpf from Toke and Andrii. 3) batched bpf map operations from Brian and Yonghong. 4) tcp congestion control in bpf from Martin. 5) bulking for non-map xdp_redirect form Toke. 6) bpf_send_signal_thread helper from Yonghong. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
|
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Jason Gunthorpe
|
e8b3a426fb |
Use ODP MRs for kernel ULPs
The following series extends MR creation routines to allow creation of user MRs through kernel ULPs as a proxy. The immediate use case is to allow RDS to work over FS-DAX, which requires ODP (on-demand-paging) MRs to be created and such MRs were not possible to create prior this series. The first part of this patchset extends RDMA to have special verb ib_reg_user_mr(). The common use case that uses this function is a userspace application that allocates memory for HCA access but the responsibility to register the memory at the HCA is on an kernel ULP. This ULP acts as an agent for the userspace application. The second part provides advise MR functionality for ULPs. This is integral part of ODP flows and used to trigger pagefaults in advance to prepare memory before running working set. The third part is actual user of those in-kernel APIs. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQT1m3YD37UfMCUQBNwp8NhrnBAZsQUCXiVO8AAKCRAp8NhrnBAZ scTrAP9gb0d3qv0IOtHw5aGI1DAgjTUn/SzUOnsjDEn7DIoh9gEA2+ZmaEyLXKrl +UcZb31auy5P8ueJYokRLhLAyRcOIAg= =yaHb -----END PGP SIGNATURE----- Merge tag 'rds-odp-for-5.5' into rdma.git for-next From https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma Leon Romanovsky says: ==================== Use ODP MRs for kernel ULPs The following series extends MR creation routines to allow creation of user MRs through kernel ULPs as a proxy. The immediate use case is to allow RDS to work over FS-DAX, which requires ODP (on-demand-paging) MRs to be created and such MRs were not possible to create prior this series. The first part of this patchset extends RDMA to have special verb ib_reg_user_mr(). The common use case that uses this function is a userspace application that allocates memory for HCA access but the responsibility to register the memory at the HCA is on an kernel ULP. This ULP acts as an agent for the userspace application. The second part provides advise MR functionality for ULPs. This is integral part of ODP flows and used to trigger pagefaults in advance to prepare memory before running working set. The third part is actual user of those in-kernel APIs. ==================== * tag 'rds-odp-for-5.5': net/rds: Use prefetch for On-Demand-Paging MR net/rds: Handle ODP mr registration/unregistration net/rds: Detect need of On-Demand-Paging memory registration RDMA/mlx5: Fix handling of IOVA != user_va in ODP paths IB/mlx5: Mask out unsupported ODP capabilities for kernel QPs RDMA/mlx5: Don't fake udata for kernel path IB/mlx5: Add ODP WQE handlers for kernel QPs IB/core: Add interface to advise_mr for kernel users IB/core: Introduce ib_reg_user_mr IB: Allow calls to ib_umem_get from kernel ULPs Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> |
|
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Jens Axboe
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354420f705 |
io_uring: add opcode to issue trace event
For some test apps at least, user_data is just zeroes. So it's not a good way to tell what the command actually is. Add the opcode to the issue trace point. Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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Omar Sandoval
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bffe633e00 |
btrfs: make btrfs_ordered_extent naming consistent with btrfs_file_extent_item
ordered->start, ordered->len, and ordered->disk_len correspond to fi->disk_bytenr, fi->num_bytes, and fi->disk_num_bytes, respectively. It's confusing to translate between the two naming schemes. Since a btrfs_ordered_extent is basically a pending btrfs_file_extent_item, let's make the former use the naming from the latter. Note that I didn't touch the names in tracepoints just in case there are scripts depending on the current naming. Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Omar Sandoval <osandov@fb.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
|
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Uwe Kleine-König
|
1188829abc |
pwm: Implement tracing for .get_state() and .apply_state()
This allows to log all calls to the driver's lowlevel functions which simplifies debugging in some cases. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com> |
|
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Ingo Molnar
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cb6c82df68 |
Linux 5.5-rc7
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAl4k7i8eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGvk0IAKRenVOdiudY77SQ VZjsteyrYTTQtPPv494ToIRjR0XQ+gYp8vyWzXTUC5Nm9Y9U3VzDqUPUjWszrSXE 6mU+tzcMc9qwuUxnIFn8zfg64ygw+37sn/w3xqeH4QmF9Z5Wl3EX3SdXTs7jp3RS VxiztkUNI5ZBV2GDtla5K/9qLPqCQnUYXIiyi5lAtBtiitZDVXFp7dy7hMgEiaEO +78K5Kh3xlt5ndDsBFOlwIb2Oof3KL7bBXntdbSBc/bjol6IRvAgln48HWCv59G2 jzAp2tj2KobX9GRAEPj+v4TQZEW0SXDNDi8MgQsM+3DYVCTmANsv57CBKRuf01+F nB1kAys= =zSnJ -----END PGP SIGNATURE----- Merge tag 'v5.5-rc7' into perf/core, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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David S. Miller
|
b3f7e3f23a | Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net | |
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Sahitya Tummala
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fad5fbce4f |
f2fs: show the CP_PAUSE reason in checkpoint traces
Remove the duplicate CP_UMOUNT enum and add the new CP_PAUSE enum to show the checkpoint reason in the trace prints. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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Chao Yu
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4c8ff7095b |
f2fs: support data compression
This patch tries to support compression in f2fs.
- New term named cluster is defined as basic unit of compression, file can
be divided into multiple clusters logically. One cluster includes 4 << n
(n >= 0) logical pages, compression size is also cluster size, each of
cluster can be compressed or not.
- In cluster metadata layout, one special flag is used to indicate cluster
is compressed one or normal one, for compressed cluster, following metadata
maps cluster to [1, 4 << n - 1] physical blocks, in where f2fs stores
data including compress header and compressed data.
- In order to eliminate write amplification during overwrite, F2FS only
support compression on write-once file, data can be compressed only when
all logical blocks in file are valid and cluster compress ratio is lower
than specified threshold.
- To enable compression on regular inode, there are three ways:
* chattr +c file
* chattr +c dir; touch dir/file
* mount w/ -o compress_extension=ext; touch file.ext
Compress metadata layout:
[Dnode Structure]
+-----------------------------------------------+
| cluster 1 | cluster 2 | ......... | cluster N |
+-----------------------------------------------+
. . . .
. . . .
. Compressed Cluster . . Normal Cluster .
+----------+---------+---------+---------+ +---------+---------+---------+---------+
|compr flag| block 1 | block 2 | block 3 | | block 1 | block 2 | block 3 | block 4 |
+----------+---------+---------+---------+ +---------+---------+---------+---------+
. .
. .
. .
+-------------+-------------+----------+----------------------------+
| data length | data chksum | reserved | compressed data |
+-------------+-------------+----------+----------------------------+
Changelog:
20190326:
- fix error handling of read_end_io().
- remove unneeded comments in f2fs_encrypt_one_page().
20190327:
- fix wrong use of f2fs_cluster_is_full() in f2fs_mpage_readpages().
- don't jump into loop directly to avoid uninitialized variables.
- add TODO tag in error path of f2fs_write_cache_pages().
20190328:
- fix wrong merge condition in f2fs_read_multi_pages().
- check compressed file in f2fs_post_read_required().
20190401
- allow overwrite on non-compressed cluster.
- check cluster meta before writing compressed data.
20190402
- don't preallocate blocks for compressed file.
- add lz4 compress algorithm
- process multiple post read works in one workqueue
Now f2fs supports processing post read work in multiple workqueue,
it shows low performance due to schedule overhead of multiple
workqueue executing orderly.
20190921
- compress: support buffered overwrite
C: compress cluster flag
V: valid block address
N: NEW_ADDR
One cluster contain 4 blocks
before overwrite after overwrite
- VVVV -> CVNN
- CVNN -> VVVV
- CVNN -> CVNN
- CVNN -> CVVV
- CVVV -> CVNN
- CVVV -> CVVV
20191029
- add kconfig F2FS_FS_COMPRESSION to isolate compression related
codes, add kconfig F2FS_FS_{LZO,LZ4} to cover backend algorithm.
note that: will remove lzo backend if Jaegeuk agreed that too.
- update codes according to Eric's comments.
20191101
- apply fixes from Jaegeuk
20191113
- apply fixes from Jaegeuk
- split workqueue for fsverity
20191216
- apply fixes from Jaegeuk
20200117
- fix to avoid NULL pointer dereference
[Jaegeuk Kim]
- add tracepoint for f2fs_{,de}compress_pages()
- fix many bugs and add some compression stats
- fix overwrite/mmap bugs
- address 32bit build error, reported by Geert.
- bug fixes when handling errors and i_compressed_blocks
Reported-by: <noreply@ellerman.id.au>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Jesper Dangaard Brouer
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58aa94f922 |
devmap: Adjust tracepoint for map-less queue flush
Now that we don't have a reference to a devmap when flushing the device bulk queue, let's change the the devmap_xmit tracepoint to remote the map_id and map_index fields entirely. Rearrange the fields so 'drops' and 'sent' stay in the same position in the tracepoint struct, to make it possible for the xdp_monitor utility to read both the old and the new format. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/157918768613.1458396.9165902403373826572.stgit@toke.dk |
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Toke Høiland-Jørgensen
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1d233886dd |
xdp: Use bulking for non-map XDP_REDIRECT and consolidate code paths
Since the bulk queue used by XDP_REDIRECT now lives in struct net_device, we can re-use the bulking for the non-map version of the bpf_redirect() helper. This is a simple matter of having xdp_do_redirect_slow() queue the frame on the bulk queue instead of sending it out with __bpf_tx_xdp(). Unfortunately we can't make the bpf_redirect() helper return an error if the ifindex doesn't exit (as bpf_redirect_map() does), because we don't have a reference to the network namespace of the ingress device at the time the helper is called. So we have to leave it as-is and keep the device lookup in xdp_do_redirect_slow(). Since this leaves less reason to have the non-map redirect code in a separate function, so we get rid of the xdp_do_redirect_slow() function entirely. This does lose us the tracepoint disambiguation, but fortunately the xdp_redirect and xdp_redirect_map tracepoints use the same tracepoint entry structures. This means both can contain a map index, so we can just amend the tracepoint definitions so we always emit the xdp_redirect(_err) tracepoints, but with the map ID only populated if a map is present. This means we retire the xdp_redirect_map(_err) tracepoints entirely, but keep the definitions around in case someone is still listening for them. With this change, the performance of the xdp_redirect sample program goes from 5Mpps to 8.4Mpps (a 68% increase). Since the flush functions are no longer map-specific, rename the flush() functions to drop _map from their names. One of the renamed functions is the xdp_do_flush_map() callback used in all the xdp-enabled drivers. To keep from having to update all drivers, use a #define to keep the old name working, and only update the virtual drivers in this patch. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/157918768505.1458396.17518057312953572912.stgit@toke.dk |
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Toke Høiland-Jørgensen
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75ccae62cb |
xdp: Move devmap bulk queue into struct net_device
Commit
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Daniel Jordan
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e8ab20d9bc |
workqueue: remove workqueue_work event class
The trace event class workqueue_work now has only one consumer, so get rid of it. No functional change. Signed-off-by: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: Tejun Heo <tj@kernel.org> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Tejun Heo <tj@kernel.org> |
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Daniel Jordan
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1c5da0ec7f |
workqueue: add worker function to workqueue_execute_end tracepoint
It's surprising that workqueue_execute_end includes only the work when its counterpart workqueue_execute_start has both the work and the worker function. You can't set a tracing filter or trigger based on the function, and postprocessing scripts interested in specific functions are harder to write since they have to remember the work from _start and match it up with the same field in _end. Add the function name, taking care to use the copy stashed in the worker since the work is no longer safe to touch. Signed-off-by: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: Tejun Heo <tj@kernel.org> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Tejun Heo <tj@kernel.org> |
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Chuck Lever
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cb586decbb |
xprtrdma: Make sendctx queue lifetime the same as connection lifetime
The size of the sendctx queue depends on the value stored in ia->ri_max_send_sges. This value is determined by querying the underlying device. Eventually, rpcrdma_ia_open() and rpcrdma_ep_create() will be called in the connect worker rather than at transport set-up time. The underlying device will not have been chosen device set-up time. The sendctx queue will thus have to be created after the underlying device has been chosen via address and route resolution; in other words, in the connect worker. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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Chuck Lever
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abf8af78a6 |
SUNRPC: Capture signalled RPC tasks
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> |
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Changbin Du
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d0695e2351 |
tracing: xen: Ordered comparison of function pointers
Just as commit |
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Linus Torvalds
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e033e7d4a8 |
Merge branch 'dhowells' (patches from DavidH)
Merge misc fixes from David Howells. Two afs fixes and a key refcounting fix. * dhowells: afs: Fix afs_lookup() to not clobber the version on a new dentry afs: Fix use-after-loss-of-ref keys: Fix request_key() cache |
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David Howells
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40a708bd62 |
afs: Fix use-after-loss-of-ref
afs_lookup() has a tracepoint to indicate the outcome of
d_splice_alias(), passing it the inode to retrieve the fid from.
However, the function gave up its ref on that inode when it called
d_splice_alias(), which may have failed and dropped the inode.
Fix this by caching the fid.
Fixes:
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Yang Shi
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554913f600 |
mm: khugepaged: add trace status description for SCAN_PAGE_HAS_PRIVATE
Commit |
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Michał Mirosław
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d229290689 |
PM-runtime: add tracepoints for usage_count changes
Add tracepoints to remaining places where device's power.usage_count is changed. This helps debugging where and why autosuspend is prevented. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Mat Martineau
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faf391c382 |
tcp: Define IPPROTO_MPTCP
To open a MPTCP socket with socket(AF_INET, SOCK_STREAM, IPPROTO_MPTCP), IPPROTO_MPTCP needs a value that differs from IPPROTO_TCP. The existing IPPROTO numbers mostly map directly to IANA-specified protocol numbers. MPTCP does not have a protocol number allocated because MPTCP packets use the TCP protocol number. Use private number not used OTA. Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Mat Martineau
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bf9765145b |
sock: Make sk_protocol a 16-bit value
Match the 16-bit width of skbuff->protocol. Fills an 8-bit hole so sizeof(struct sock) does not change. Also take care of BPF field access for sk_type/sk_protocol. Both of them are now outside the bitfield, so we can use load instructions without further shifting/masking. v5 -> v6: - update eBPF accessors, too (Intel's kbuild test robot) v2 -> v3: - keep 'sk_type' 2 bytes aligned (Eric) v1 -> v2: - preserve sk_pacing_shift as bit field (Eric) Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: bpf@vger.kernel.org Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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David S. Miller
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a2d6d7ae59 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
The ungrafting from PRIO bug fixes in net, when merged into net-next, merge cleanly but create a build failure. The resolution used here is from Petr Machata. Signed-off-by: David S. Miller <davem@davemloft.net> |
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Chuck Lever
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622db5b643 |
RDMA/core: Add trace points to follow MR allocation
Track the lifetime of ib_mr objects. Here's sample output from a test run
with NFS/RDMA:
<...>-361 [009] 79238.772782: mr_alloc: pd.id=3 mr.id=11 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.772812: mr_alloc: pd.id=3 mr.id=12 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.772839: mr_alloc: pd.id=3 mr.id=13 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.772866: mr_alloc: pd.id=3 mr.id=14 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.772893: mr_alloc: pd.id=3 mr.id=15 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.772921: mr_alloc: pd.id=3 mr.id=16 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.772947: mr_alloc: pd.id=3 mr.id=17 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.772974: mr_alloc: pd.id=3 mr.id=18 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.773001: mr_alloc: pd.id=3 mr.id=19 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.773028: mr_alloc: pd.id=3 mr.id=20 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79238.773055: mr_alloc: pd.id=3 mr.id=21 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.270942: mr_alloc: pd.id=3 mr.id=22 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.270975: mr_alloc: pd.id=3 mr.id=23 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.271007: mr_alloc: pd.id=3 mr.id=24 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.271036: mr_alloc: pd.id=3 mr.id=25 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.271067: mr_alloc: pd.id=3 mr.id=26 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.271095: mr_alloc: pd.id=3 mr.id=27 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.271121: mr_alloc: pd.id=3 mr.id=28 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.271153: mr_alloc: pd.id=3 mr.id=29 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.271181: mr_alloc: pd.id=3 mr.id=30 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.271208: mr_alloc: pd.id=3 mr.id=31 type=MEM_REG max_num_sg=30 rc=0
<...>-361 [009] 79240.271236: mr_alloc: pd.id=3 mr.id=32 type=MEM_REG max_num_sg=30 rc=0
<...>-4351 [001] 79242.299400: mr_dereg: mr.id=32
<...>-4351 [001] 79242.299467: mr_dereg: mr.id=31
<...>-4351 [001] 79242.299554: mr_dereg: mr.id=30
<...>-4351 [001] 79242.299615: mr_dereg: mr.id=29
<...>-4351 [001] 79242.299684: mr_dereg: mr.id=28
<...>-4351 [001] 79242.299748: mr_dereg: mr.id=27
<...>-4351 [001] 79242.299812: mr_dereg: mr.id=26
<...>-4351 [001] 79242.299874: mr_dereg: mr.id=25
<...>-4351 [001] 79242.299944: mr_dereg: mr.id=24
<...>-4351 [001] 79242.300009: mr_dereg: mr.id=23
<...>-4351 [001] 79242.300190: mr_dereg: mr.id=22
<...>-4351 [001] 79242.300263: mr_dereg: mr.id=21
<...>-4351 [001] 79242.300326: mr_dereg: mr.id=20
<...>-4351 [001] 79242.300388: mr_dereg: mr.id=19
<...>-4351 [001] 79242.300450: mr_dereg: mr.id=18
<...>-4351 [001] 79242.300516: mr_dereg: mr.id=17
<...>-4351 [001] 79242.300629: mr_dereg: mr.id=16
<...>-4351 [001] 79242.300718: mr_dereg: mr.id=15
<...>-4351 [001] 79242.300784: mr_dereg: mr.id=14
<...>-4351 [001] 79242.300879: mr_dereg: mr.id=13
<...>-4351 [001] 79242.300945: mr_dereg: mr.id=12
<...>-4351 [001] 79242.301012: mr_dereg: mr.id=11
Some features of the output:
- The lifetime and owner PD of each MR is clearly visible.
- The type of MR is captured, as is the SGE array size.
- Failing MR allocation can be recorded.
Link: https://lore.kernel.org/r/20191218201820.30584.34636.stgit@manet.1015granger.net
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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Chuck Lever
|
3e5901cbfc |
RDMA/core: Trace points for diagnosing completion queue issues
Sample trace events:
kworker/u29:0-300 [007] 120.042217: cq_alloc: cq.id=4 nr_cqe=161 comp_vector=2 poll_ctx=WORKQUEUE
<idle>-0 [002] 120.056292: cq_schedule: cq.id=4
kworker/2:1H-482 [002] 120.056402: cq_process: cq.id=4 wake-up took 109 [us] from interrupt
kworker/2:1H-482 [002] 120.056407: cq_poll: cq.id=4 requested 16, returned 1
<idle>-0 [002] 120.067503: cq_schedule: cq.id=4
kworker/2:1H-482 [002] 120.067537: cq_process: cq.id=4 wake-up took 34 [us] from interrupt
kworker/2:1H-482 [002] 120.067541: cq_poll: cq.id=4 requested 16, returned 1
<idle>-0 [002] 120.067657: cq_schedule: cq.id=4
kworker/2:1H-482 [002] 120.067672: cq_process: cq.id=4 wake-up took 15 [us] from interrupt
kworker/2:1H-482 [002] 120.067674: cq_poll: cq.id=4 requested 16, returned 1
...
systemd-1 [002] 122.392653: cq_schedule: cq.id=4
kworker/2:1H-482 [002] 122.392688: cq_process: cq.id=4 wake-up took 35 [us] from interrupt
kworker/2:1H-482 [002] 122.392693: cq_poll: cq.id=4 requested 16, returned 16
kworker/2:1H-482 [002] 122.392836: cq_poll: cq.id=4 requested 16, returned 16
kworker/2:1H-482 [002] 122.392970: cq_poll: cq.id=4 requested 16, returned 16
kworker/2:1H-482 [002] 122.393083: cq_poll: cq.id=4 requested 16, returned 16
kworker/2:1H-482 [002] 122.393195: cq_poll: cq.id=4 requested 16, returned 3
Several features to note in this output:
- The WCE count and context type are reported at allocation time
- The CPU and kworker for each CQ is evident
- The CQ's restracker ID is tagged on each trace event
- CQ poll scheduling latency is measured
- Details about how often single completions occur versus multiple
completions are evident
- The cost of the ULP's completion handler is recorded
Link: https://lore.kernel.org/r/20191218201815.30584.3481.stgit@manet.1015granger.net
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
|
|
|
Lu Baolu
|
984d03adc9 |
iommu/vt-d: trace: Extend map_sg trace event
Current map_sg stores trace message in a coarse manner. This extends it so that more detailed messages could be traced. The map_sg trace message looks like: map_sg: dev=0000:00:17.0 [1/9] dev_addr=0xf8f90000 phys_addr=0x158051000 size=4096 map_sg: dev=0000:00:17.0 [2/9] dev_addr=0xf8f91000 phys_addr=0x15a858000 size=4096 map_sg: dev=0000:00:17.0 [3/9] dev_addr=0xf8f92000 phys_addr=0x15aa13000 size=4096 map_sg: dev=0000:00:17.0 [4/9] dev_addr=0xf8f93000 phys_addr=0x1570f1000 size=8192 map_sg: dev=0000:00:17.0 [5/9] dev_addr=0xf8f95000 phys_addr=0x15c6d0000 size=4096 map_sg: dev=0000:00:17.0 [6/9] dev_addr=0xf8f96000 phys_addr=0x157194000 size=4096 map_sg: dev=0000:00:17.0 [7/9] dev_addr=0xf8f97000 phys_addr=0x169552000 size=4096 map_sg: dev=0000:00:17.0 [8/9] dev_addr=0xf8f98000 phys_addr=0x169dde000 size=4096 map_sg: dev=0000:00:17.0 [9/9] dev_addr=0xf8f99000 phys_addr=0x148351000 size=4096 Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> |
|
|
Joel Fernandes (Google)
|
bf44f488e1 |
tracing: Change offset type to s32 in preempt/irq tracepoints
Discussion in the below link reported that symbols in modules can appear
to be before _stext on ARM architecture, causing wrapping with the
offsets of this tracepoint. Change the offset type to s32 to fix this.
Link: http://lore.kernel.org/r/20191127154428.191095-1-antonio.borneo@st.com
Link: http://lkml.kernel.org/r/20200102194625.226436-1-joel@joelfernandes.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Antonio Borneo <antonio.borneo@st.com>
Cc: stable@vger.kernel.org
Fixes:
|
|
|
Arnd Bergmann
|
77cdffcb0b |
media: v4l2: abstract timeval handling in v4l2_buffer
As a preparation for adding 64-bit time_t support in the uapi, change the drivers to no longer care about the format of the timestamp field in struct v4l2_buffer. The v4l2_timeval_to_ns() function is no longer needed in the kernel after this, but there is userspace code relying on it to be part of the uapi header. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil-cisco@xs4all.nl: replace spaces by tabs] Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> |
|
|
Lukasz Luba
|
257d0e20ec |
include: trace: Add SCMI header with trace events
Adding trace events would help to measure the speed of the communication channel. It can be also potentially used helpful during investigation of some issues platforms which use different transport layer. Update also MAINTAINERS file with information that the new trace events are maintained. Suggested-by: Jim Quinlan <james.quinlan@broadcom.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> |
|
|
Kevin Kou
|
f643ee295c |
sctp: move trace_sctp_probe_path into sctp_outq_sack
The original patch bringed in the "SCTP ACK tracking trace event"
feature was committed at Dec.20, 2017, it replaced jprobe usage
with trace events, and bringed in two trace events, one is
TRACE_EVENT(sctp_probe), another one is TRACE_EVENT(sctp_probe_path).
The original patch intended to trigger the trace_sctp_probe_path in
TRACE_EVENT(sctp_probe) as below code,
+TRACE_EVENT(sctp_probe,
+
+ TP_PROTO(const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc,
+ struct sctp_chunk *chunk),
+
+ TP_ARGS(ep, asoc, chunk),
+
+ TP_STRUCT__entry(
+ __field(__u64, asoc)
+ __field(__u32, mark)
+ __field(__u16, bind_port)
+ __field(__u16, peer_port)
+ __field(__u32, pathmtu)
+ __field(__u32, rwnd)
+ __field(__u16, unack_data)
+ ),
+
+ TP_fast_assign(
+ struct sk_buff *skb = chunk->skb;
+
+ __entry->asoc = (unsigned long)asoc;
+ __entry->mark = skb->mark;
+ __entry->bind_port = ep->base.bind_addr.port;
+ __entry->peer_port = asoc->peer.port;
+ __entry->pathmtu = asoc->pathmtu;
+ __entry->rwnd = asoc->peer.rwnd;
+ __entry->unack_data = asoc->unack_data;
+
+ if (trace_sctp_probe_path_enabled()) {
+ struct sctp_transport *sp;
+
+ list_for_each_entry(sp, &asoc->peer.transport_addr_list,
+ transports) {
+ trace_sctp_probe_path(sp, asoc);
+ }
+ }
+ ),
But I found it did not work when I did testing, and trace_sctp_probe_path
had no output, I finally found that there is trace buffer lock
operation(trace_event_buffer_reserve) in include/trace/trace_events.h:
static notrace void \
trace_event_raw_event_##call(void *__data, proto) \
{ \
struct trace_event_file *trace_file = __data; \
struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\
struct trace_event_buffer fbuffer; \
struct trace_event_raw_##call *entry; \
int __data_size; \
\
if (trace_trigger_soft_disabled(trace_file)) \
return; \
\
__data_size = trace_event_get_offsets_##call(&__data_offsets, args); \
\
entry = trace_event_buffer_reserve(&fbuffer, trace_file, \
sizeof(*entry) + __data_size); \
\
if (!entry) \
return; \
\
tstruct \
\
{ assign; } \
\
trace_event_buffer_commit(&fbuffer); \
}
The reason caused no output of trace_sctp_probe_path is that
trace_sctp_probe_path written in TP_fast_assign part of
TRACE_EVENT(sctp_probe), and it will be placed( { assign; } ) after the
trace_event_buffer_reserve() when compiler expands Macro,
entry = trace_event_buffer_reserve(&fbuffer, trace_file, \
sizeof(*entry) + __data_size); \
\
if (!entry) \
return; \
\
tstruct \
\
{ assign; } \
so trace_sctp_probe_path finally can not acquire trace_event_buffer
and return no output, that is to say the nest of tracepoint entry function
is not allowed. The function call flow is:
trace_sctp_probe()
-> trace_event_raw_event_sctp_probe()
-> lock buffer
-> trace_sctp_probe_path()
-> trace_event_raw_event_sctp_probe_path() --nested
-> buffer has been locked and return no output.
This patch is to remove trace_sctp_probe_path from the TP_fast_assign
part of TRACE_EVENT(sctp_probe) to avoid the nest of entry function,
and trigger sctp_probe_path_trace in sctp_outq_sack.
After this patch, you can enable both events individually,
# cd /sys/kernel/debug/tracing
# echo 1 > events/sctp/sctp_probe/enable
# echo 1 > events/sctp/sctp_probe_path/enable
Or, you can enable all the events under sctp.
# echo 1 > events/sctp/enable
Signed-off-by: Kevin Kou <qdkevin.kou@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
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Ingo Molnar
|
2040cf9f59 |
Linux 5.5-rc1
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAl3tf/0eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGlKwH/3fTToujuJfTx5E5 mrARAP65J1L/DxpEKvKRt2bNZo6w13mNd8g7ZPmYChz90bYGvXQSG8hYTU9iAw3O yimSTJlNXDhVAluB53XnDdUxIWC4HUZsNxWJNCeXMuiMcGNsTGX+v3f+x7oHCT0P jI1RSIsFGjgr0RWqZ8U5aJckQo2xABC1TfYw53K66Oc/JLZpSFJFwMgjf1fD5diU HGDA8E2p0u1TQIyNzr86iqMvnlSRYBQwBQn6OgEKCG4Z0NLtXfDF4mqnxsXgLmIH oQoFfxaMKXyGWds7ZxwcGWntALCF41ThfpiJWDIyxjWxFEty4bqTCbDPwwyp7ip0 iuASmTI= =YqO2 -----END PGP SIGNATURE----- Merge tag 'v5.5-rc1' into core/kprobes, to resolve conflicts Signed-off-by: Ingo Molnar <mingo@kernel.org> |
|
|
Lai Jiangshan
|
b3e627d3d5 |
rcu: Make PREEMPT_RCU be a modifier to TREE_RCU
Currently PREEMPT_RCU and TREE_RCU are mutually exclusive Kconfig options. But PREEMPT_RCU actually specifies a kind of TREE_RCU, namely a preemptible TREE_RCU. This commit therefore makes PREEMPT_RCU be a modifer to the TREE_RCU Kconfig option. This has the benefit of simplifying several of the #if expressions that formerly needed to check both, but now need only check one or the other. Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com> Signed-off-by: Lai Jiangshan <jiangshanlai@gmail.com> Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
|
|
Marco Elver
|
6cf539a87a |
rcu: Fix data-race due to atomic_t copy-by-value
This fixes a data-race where `atomic_t dynticks` is copied by value. The copy is performed non-atomically, resulting in a data-race if `dynticks` is updated concurrently. This data-race was found with KCSAN: ================================================================== BUG: KCSAN: data-race in dyntick_save_progress_counter / rcu_irq_enter write to 0xffff989dbdbe98e0 of 4 bytes by task 10 on cpu 3: atomic_add_return include/asm-generic/atomic-instrumented.h:78 [inline] rcu_dynticks_snap kernel/rcu/tree.c:310 [inline] dyntick_save_progress_counter+0x43/0x1b0 kernel/rcu/tree.c:984 force_qs_rnp+0x183/0x200 kernel/rcu/tree.c:2286 rcu_gp_fqs kernel/rcu/tree.c:1601 [inline] rcu_gp_fqs_loop+0x71/0x880 kernel/rcu/tree.c:1653 rcu_gp_kthread+0x22c/0x3b0 kernel/rcu/tree.c:1799 kthread+0x1b5/0x200 kernel/kthread.c:255 <snip> read to 0xffff989dbdbe98e0 of 4 bytes by task 154 on cpu 7: rcu_nmi_enter_common kernel/rcu/tree.c:828 [inline] rcu_irq_enter+0xda/0x240 kernel/rcu/tree.c:870 irq_enter+0x5/0x50 kernel/softirq.c:347 <snip> Reported by Kernel Concurrency Sanitizer on: CPU: 7 PID: 154 Comm: kworker/7:1H Not tainted 5.3.0+ #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Workqueue: kblockd blk_mq_run_work_fn ================================================================== Signed-off-by: Marco Elver <elver@google.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
|
|
Linus Torvalds
|
911d137ab0 |
This is a relatively quiet cycle for nfsd, mainly various bugfixes.
Possibly most interesting is Trond's fixes for some callback races that were due to my incomplete understanding of rpc client shutdown. Unfortunately at the last minute I've started noticing a new intermittent failure to send callbacks. As the logic seems basically correct, I'm leaving Trond's patches in for now, and hope to find a fix in the next week so I don't have to revert those patches. -----BEGIN PGP SIGNATURE----- iQJJBAABCAAzFiEEYtFWavXG9hZotryuJ5vNeUKO4b4FAl3r3AAVHGJmaWVsZHNA ZmllbGRzZXMub3JnAAoJECebzXlCjuG+rjkP/3L6DZs0Uv0BYbGq5Gmit0uoPSQk 8BT7oQhbagCh+ULRYWCnK6cz82wejR4Gzq4PLyl5x5Vcc5x+bLoPI9YgiRZlIbZu ZvSg93E6SITLfq5xRlDC0MlIVZkI+HoIfyYgv1aYiWvQ3834bcx4DxVm9h7cNpT3 x37anEFi1lv3n9fct3obOrs3AvCS76XyA6VVhcSLJ77amKQ+O7LI0crqUc6cuX2i CkTwTSDwyCrzkx3dZ2xDPDTbLecxw+Ce4adaby5v3GEQo3TOCmEWX92D3dvzfMmv ICU07FsVOILnIT/fmC91b1+JWVRLjUUBw5EPmDduwSP/yw4YnIEODFEP/wAUAmMJ vJ9hi9c1rThQ9n8h08RIwA2snhnpXRxKCWhpIRY6WM8DhHL9Y9AuVPYTKxhQOjPK l3wbOGcMW63NrTOPHHN7hTB0vDLgPKIXYVIrMvZTd/P7CghDDEbhT1gDvx/IL3Uq WrHKbJtK7rbx9i2bh5f6fH0DRrv7lxbD0ffunRRa3twPAe6zsG9WPjsbZZraZzEg O7/o3wZu2N7MpL5bXPfzB+5ylOTxvNWew07NJjA4BIOfwin3bw/71YfB0Vnoairv PhmbN2Dj4/t82ld0JU5GJWojpUfH4ARXM2Li9WO99wzx+KrxScsqGPnRMFe9dC7b Q7ltP1p0gUbkJ88Z =b2zA -----END PGP SIGNATURE----- Merge tag 'nfsd-5.5' of git://linux-nfs.org/~bfields/linux Pull nfsd updates from Bruce Fields: "This is a relatively quiet cycle for nfsd, mainly various bugfixes. Possibly most interesting is Trond's fixes for some callback races that were due to my incomplete understanding of rpc client shutdown. Unfortunately at the last minute I've started noticing a new intermittent failure to send callbacks. As the logic seems basically correct, I'm leaving Trond's patches in for now, and hope to find a fix in the next week so I don't have to revert those patches" * tag 'nfsd-5.5' of git://linux-nfs.org/~bfields/linux: (24 commits) nfsd: depend on CRYPTO_MD5 for legacy client tracking NFSD fixing possible null pointer derefering in copy offload nfsd: check for EBUSY from vfs_rmdir/vfs_unink. nfsd: Ensure CLONE persists data and metadata changes to the target file SUNRPC: Fix backchannel latency metrics nfsd: restore NFSv3 ACL support nfsd: v4 support requires CRYPTO_SHA256 nfsd: Fix cld_net->cn_tfm initialization lockd: remove __KERNEL__ ifdefs sunrpc: remove __KERNEL__ ifdefs race in exportfs_decode_fh() nfsd: Drop LIST_HEAD where the variable it declares is never used. nfsd: document callback_wq serialization of callback code nfsd: mark cb path down on unknown errors nfsd: Fix races between nfsd4_cb_release() and nfsd4_shutdown_callback() nfsd: minor 4.1 callback cleanup SUNRPC: Fix svcauth_gss_proxy_init() SUNRPC: Trace gssproxy upcall results sunrpc: fix crash when cache_head become valid before update nfsd: remove private bin2hex implementation ... |
|
|
Linus Torvalds
|
fb9bf40cf0 |
NFS client updates for Linux 5.5
Highlights include:
Features:
- NFSv4.2 now supports cross device offloaded copy (i.e. offloaded copy
of a file from one source server to a different target server).
- New RDMA tracepoints for debugging congestion control and Local Invalidate
WRs.
Bugfixes and cleanups
- Drop the NFSv4.1 session slot if nfs4_delegreturn_prepare waits for
layoutreturn
- Handle bad/dead sessions correctly in nfs41_sequence_process()
- Various bugfixes to the delegation return operation.
- Various bugfixes pertaining to delegations that have been revoked.
- Cleanups to the NFS timespec code to avoid unnecessary conversions
between timespec and timespec64.
- Fix unstable RDMA connections after a reconnect
- Close race between waking an RDMA sender and posting a receive
- Wake pending RDMA tasks if connection fails
- Fix MR list corruption, and clean up MR usage
- Fix another RPCSEC_GSS issue with MIC buffer space
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Merge tag 'nfs-for-5.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Features:
- NFSv4.2 now supports cross device offloaded copy (i.e. offloaded
copy of a file from one source server to a different target
server).
- New RDMA tracepoints for debugging congestion control and Local
Invalidate WRs.
Bugfixes and cleanups
- Drop the NFSv4.1 session slot if nfs4_delegreturn_prepare waits for
layoutreturn
- Handle bad/dead sessions correctly in nfs41_sequence_process()
- Various bugfixes to the delegation return operation.
- Various bugfixes pertaining to delegations that have been revoked.
- Cleanups to the NFS timespec code to avoid unnecessary conversions
between timespec and timespec64.
- Fix unstable RDMA connections after a reconnect
- Close race between waking an RDMA sender and posting a receive
- Wake pending RDMA tasks if connection fails
- Fix MR list corruption, and clean up MR usage
- Fix another RPCSEC_GSS issue with MIC buffer space"
* tag 'nfs-for-5.5-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (79 commits)
SUNRPC: Capture completion of all RPC tasks
SUNRPC: Fix another issue with MIC buffer space
NFS4: Trace lock reclaims
NFS4: Trace state recovery operation
NFSv4.2 fix memory leak in nfs42_ssc_open
NFSv4.2 fix kfree in __nfs42_copy_file_range
NFS: remove duplicated include from nfs4file.c
NFSv4: Make _nfs42_proc_copy_notify() static
NFS: Fallocate should use the nfs4_fattr_bitmap
NFS: Return -ETXTBSY when attempting to write to a swapfile
fs: nfs: sysfs: Remove NULL check before kfree
NFS: remove unneeded semicolon
NFSv4: add declaration of current_stateid
NFSv4.x: Drop the slot if nfs4_delegreturn_prepare waits for layoutreturn
NFSv4.x: Handle bad/dead sessions correctly in nfs41_sequence_process()
nfsv4: Move NFSPROC4_CLNT_COPY_NOTIFY to end of list
SUNRPC: Avoid RPC delays when exiting suspend
NFS: Add a tracepoint in nfs_fh_to_dentry()
NFSv4: Don't retry the GETATTR on old stateid in nfs4_delegreturn_done()
NFSv4: Handle NFS4ERR_OLD_STATEID in delegreturn
...
|
|
|
Linus Torvalds
|
596cf45cbf |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton: "Incoming: - a small number of updates to scripts/, ocfs2 and fs/buffer.c - most of MM I still have quite a lot of material (mostly not MM) staged after linux-next due to -next dependencies. I'll send those across next week as the preprequisites get merged up" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (135 commits) mm/page_io.c: annotate refault stalls from swap_readpage mm/Kconfig: fix trivial help text punctuation mm/Kconfig: fix indentation mm/memory_hotplug.c: remove __online_page_set_limits() mm: fix typos in comments when calling __SetPageUptodate() mm: fix struct member name in function comments mm/shmem.c: cast the type of unmap_start to u64 mm: shmem: use proper gfp flags for shmem_writepage() mm/shmem.c: make array 'values' static const, makes object smaller userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK fs/userfaultfd.c: wp: clear VM_UFFD_MISSING or VM_UFFD_WP during userfaultfd_register() userfaultfd: wrap the common dst_vma check into an inlined function userfaultfd: remove unnecessary WARN_ON() in __mcopy_atomic_hugetlb() userfaultfd: use vma_pagesize for all huge page size calculation mm/madvise.c: use PAGE_ALIGN[ED] for range checking mm/madvise.c: replace with page_size() in madvise_inject_error() mm/mmap.c: make vma_merge() comment more easy to understand mm/hwpoison-inject: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops autonuma: reduce cache footprint when scanning page tables autonuma: fix watermark checking in migrate_balanced_pgdat() ... |
|
|
Linus Torvalds
|
ceb3074745 |
y2038: syscall implementation cleanups
This is a series of cleanups for the y2038 work, mostly intended for namespace cleaning: the kernel defines the traditional time_t, timeval and timespec types that often lead to y2038-unsafe code. Even though the unsafe usage is mostly gone from the kernel, having the types and associated functions around means that we can still grow new users, and that we may be missing conversions to safe types that actually matter. There are still a number of driver specific patches needed to get the last users of these types removed, those have been submitted to the respective maintainers. Link: https://lore.kernel.org/lkml/20191108210236.1296047-1-arnd@arndb.de/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCAAGBQJd3D+wAAoJEJpsee/mABjZfdcQAJvl6e+4ddKoDMIVJqVCE25N meFRgA7S8jy6BefEVeUgI8TxK+amGO36szMBUEnZxSSxq9u+gd13m5bEK6Xq/ov7 4KTAiA3Irm/W5FBTktu1zc5ROIra1Xj7jLdubf8wEC3viSXIXB3+68Y28iBN7D2O k9kSpwINC5lWeC8guZy2I+2yc4ywUEXao9nVh8C/J+FQtU02TcdLtZop9OhpAa8u U19VVH3WHkQI7ZfLvBTUiYK6tlYTiYCnpr8l6sm850CnVv1fzBW+DzmVhPJ6FdFd 4m5staC0sQ6gVqtjVMBOtT5CdzREse6hpwbKo2GRWFroO5W9tljMOJJXHvv/f6kz DxrpUmj37JuRbqAbr8KDmQqPo6M2CRkxFxjol1yh5ER63u1xMwLm/PQITZIMDvPO jrFc2C2SdM2E9bKP/RMCVoKSoRwxCJ5IwJ2AF237rrU0sx/zB2xsrOGssx5CWEgc 3bbk6tDQujJJubnCfgRy1tTxpLZOHEEKw8YhFLLbR2LCtA9pA/0rfLLad16cjA5e 5jIHxfsFc23zgpzrJeB7kAF/9xgu1tlA5BotOs3VBE89LtWOA9nK5dbPXng6qlUe er3xLCfS38ovhUw6DusQpaYLuaYuLM7DKO4iav9kuTMcY9GkbPk7vDD3KPGh2goy hY5cSM8+kT1q/THLnUBH =Bdbv -----END PGP SIGNATURE----- Merge tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground Pull y2038 cleanups from Arnd Bergmann: "y2038 syscall implementation cleanups This is a series of cleanups for the y2038 work, mostly intended for namespace cleaning: the kernel defines the traditional time_t, timeval and timespec types that often lead to y2038-unsafe code. Even though the unsafe usage is mostly gone from the kernel, having the types and associated functions around means that we can still grow new users, and that we may be missing conversions to safe types that actually matter. There are still a number of driver specific patches needed to get the last users of these types removed, those have been submitted to the respective maintainers" Link: https://lore.kernel.org/lkml/20191108210236.1296047-1-arnd@arndb.de/ * tag 'y2038-cleanups-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground: (26 commits) y2038: alarm: fix half-second cut-off y2038: ipc: fix x32 ABI breakage y2038: fix typo in powerpc vdso "LOPART" y2038: allow disabling time32 system calls y2038: itimer: change implementation to timespec64 y2038: move itimer reset into itimer.c y2038: use compat_{get,set}_itimer on alpha y2038: itimer: compat handling to itimer.c y2038: time: avoid timespec usage in settimeofday() y2038: timerfd: Use timespec64 internally y2038: elfcore: Use __kernel_old_timeval for process times y2038: make ns_to_compat_timeval use __kernel_old_timeval y2038: socket: use __kernel_old_timespec instead of timespec y2038: socket: remove timespec reference in timestamping y2038: syscalls: change remaining timeval to __kernel_old_timeval y2038: rusage: use __kernel_old_timeval y2038: uapi: change __kernel_time_t to __kernel_old_time_t y2038: stat: avoid 'time_t' in 'struct stat' y2038: ipc: remove __kernel_time_t reference from headers y2038: vdso: powerpc: avoid timespec references ... |
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Joel Fernandes (Google)
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e4dcad204d |
rss_stat: add support to detect RSS updates of external mm
When a process updates the RSS of a different process, the rss_stat tracepoint appears in the context of the process doing the update. This can confuse userspace that the RSS of process doing the update is updated, while in reality a different process's RSS was updated. This issue happens in reclaim paths such as with direct reclaim or background reclaim. This patch adds more information to the tracepoint about whether the mm being updated belongs to the current process's context (curr field). We also include a hash of the mm pointer so that the process who the mm belongs to can be uniquely identified (mm_id field). Also vsprintf.c is refactored a bit to allow reuse of hashing code. [akpm@linux-foundation.org: remove unused local `str'] [joelaf@google.com: inline call to ptr_to_hashval] Link: http://lore.kernel.org/r/20191113153816.14b95acd@gandalf.local.home Link: http://lkml.kernel.org/r/20191114164622.GC233237@google.com Link: http://lkml.kernel.org/r/20191106024452.81923-1-joel@joelfernandes.org Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> Reported-by: Ioannis Ilkos <ilkos@google.com> Acked-by: Petr Mladek <pmladek@suse.com> [lib/vsprintf.c] Cc: Tim Murray <timmurray@google.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Carmen Jackson <carmenjackson@google.com> Cc: Mayank Gupta <mayankgupta@google.com> Cc: Daniel Colascione <dancol@google.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Minchan Kim <minchan@kernel.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Ralph Campbell <rcampbell@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Joel Fernandes (Google)
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b3d1411b67 |
mm: emit tracepoint when RSS changes
Useful to track how RSS is changing per TGID to detect spikes in RSS and
memory hogs. Several Android teams have been using this patch in
various kernel trees for half a year now. Many reported to me it is
really useful so I'm posting it upstream.
Initial patch developed by Tim Murray. Changes I made from original
patch: o Prevent any additional space consumed by mm_struct.
Regarding the fact that the RSS may change too often thus flooding the
traces - note that, there is some "hysterisis" with this already. That
is - We update the counter only if we receive 64 page faults due to
SPLIT_RSS_ACCOUNTING. However, during zapping or copying of pte range,
the RSS is updated immediately which can become noisy/flooding. In a
previous discussion, we agreed that BPF or ftrace can be used to rate
limit the signal if this becomes an issue.
Also note that I added wrappers to trace_rss_stat to prevent compiler
errors where linux/mm.h is included from tracing code, causing errors
such as:
CC kernel/trace/power-traces.o
In file included from ./include/trace/define_trace.h:102,
from ./include/trace/events/kmem.h:342,
from ./include/linux/mm.h:31,
from ./include/linux/ring_buffer.h:5,
from ./include/linux/trace_events.h:6,
from ./include/trace/events/power.h:12,
from kernel/trace/power-traces.c:15:
./include/trace/trace_events.h:113:22: error: field `ent' has incomplete type
struct trace_entry ent; \
Link: http://lore.kernel.org/r/20190903200905.198642-1-joel@joelfernandes.org
Link: http://lkml.kernel.org/r/20191001172817.234886-1-joel@joelfernandes.org
Co-developed-by: Tim Murray <timmurray@google.com>
Signed-off-by: Tim Murray <timmurray@google.com>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Carmen Jackson <carmenjackson@google.com>
Cc: Mayank Gupta <mayankgupta@google.com>
Cc: Daniel Colascione <dancol@google.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds
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50b8b3f85a |
This merge window saw the the following new featuers added to ext4:
* Direct I/O via iomap (required the iomap-for-next branch from Darrick
as a prereq).
* Support for using dioread-nolock where the block size < page size.
* Support for encryption for file systems where the block size < page size.
* Rework of journal credits handling so a revoke-heavy workload will
not cause the journal to run out of space.
* Replace bit-spinlocks with spinlocks in jbd2
Also included were some bug fixes and cleanups, mostly to clean up
corner cases from fuzzed file systems and error path handling.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"This merge window saw the the following new featuers added to ext4:
- Direct I/O via iomap (required the iomap-for-next branch from
Darrick as a prereq).
- Support for using dioread-nolock where the block size < page size.
- Support for encryption for file systems where the block size < page
size.
- Rework of journal credits handling so a revoke-heavy workload will
not cause the journal to run out of space.
- Replace bit-spinlocks with spinlocks in jbd2
Also included were some bug fixes and cleanups, mostly to clean up
corner cases from fuzzed file systems and error path handling"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (59 commits)
ext4: work around deleting a file with i_nlink == 0 safely
ext4: add more paranoia checking in ext4_expand_extra_isize handling
jbd2: make jbd2_handle_buffer_credits() handle reserved handles
ext4: fix a bug in ext4_wait_for_tail_page_commit
ext4: bio_alloc with __GFP_DIRECT_RECLAIM never fails
ext4: code cleanup for get_next_id
ext4: fix leak of quota reservations
ext4: remove unused variable warning in parse_options()
ext4: Enable encryption for subpage-sized blocks
fs/buffer.c: support fscrypt in block_read_full_page()
ext4: Add error handling for io_end_vec struct allocation
jbd2: Fine tune estimate of necessary descriptor blocks
jbd2: Provide trace event for handle restarts
ext4: Reserve revoke credits for freed blocks
jbd2: Make credit checking more strict
jbd2: Rename h_buffer_credits to h_total_credits
jbd2: Reserve space for revoke descriptor blocks
jbd2: Drop jbd2_space_needed()
jbd2: Account descriptor blocks into t_outstanding_credits
jbd2: Factor out common parts of stopping and restarting a handle
...
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Linus Torvalds
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05bd375b6b |
for-5.5/io_uring-post-20191128
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Merge tag 'for-5.5/io_uring-post-20191128' of git://git.kernel.dk/linux-block
Pull more io_uring updates from Jens Axboe:
"As mentioned in the first pull request, there was a later batch as
well. This contains fixes to the stuff that already went in, cleanups,
and a few later additions. In particular, this contains:
- Cleanups/fixes/unification of the submission and completion path
(Pavel,me)
- Linked timeouts improvements (Pavel,me)
- Error path fixes (me)
- Fix lookup window where cancellations wouldn't work (me)
- Improve DRAIN support (Pavel)
- Fix backlog flushing -EBUSY on submit (me)
- Add support for connect(2) (me)
- Fix for non-iter based fixed IO (Pavel)
- creds inheritance for async workers (me)
- Disable cmsg/ancillary data for sendmsg/recvmsg (me)
- Shrink io_kiocb to 3 cachelines (me)
- NUMA fix for io-wq (Jann)"
* tag 'for-5.5/io_uring-post-20191128' of git://git.kernel.dk/linux-block: (42 commits)
io_uring: make poll->wait dynamically allocated
io-wq: shrink io_wq_work a bit
io-wq: fix handling of NUMA node IDs
io_uring: use kzalloc instead of kcalloc for single-element allocations
io_uring: cleanup io_import_fixed()
io_uring: inline struct sqe_submit
io_uring: store timeout's sqe->off in proper place
net: disallow ancillary data for __sys_{send,recv}msg_file()
net: separate out the msghdr copy from ___sys_{send,recv}msg()
io_uring: remove superfluous check for sqe->off in io_accept()
io_uring: async workers should inherit the user creds
io-wq: have io_wq_create() take a 'data' argument
io_uring: fix dead-hung for non-iter fixed rw
io_uring: add support for IORING_OP_CONNECT
net: add __sys_connect_file() helper
io_uring: only return -EBUSY for submit on non-flushed backlog
io_uring: only !null ptr to io_issue_sqe()
io_uring: simplify io_req_link_next()
io_uring: pass only !null to io_req_find_next()
io_uring: remove io_free_req_find_next()
...
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