madv()'s MADV_FREE indicate pages are 'lazyfree'. They are still
anonymous pages, but they can be freed without pageout. To distinguish
these from normal anonymous pages, we clear their SwapBacked flag.
MADV_FREE pages could be freed without pageout, so they pretty much like
used once file pages. For such pages, we'd like to reclaim them once
there is memory pressure. Also it might be unfair reclaiming MADV_FREE
pages always before used once file pages and we definitively want to
reclaim the pages before other anonymous and file pages.
To speed up MADV_FREE pages reclaim, we put the pages into
LRU_INACTIVE_FILE list. The rationale is LRU_INACTIVE_FILE list is tiny
nowadays and should be full of used once file pages. Reclaiming
MADV_FREE pages will not have much interfere of anonymous and active
file pages. And the inactive file pages and MADV_FREE pages will be
reclaimed according to their age, so we don't reclaim too many MADV_FREE
pages too. Putting the MADV_FREE pages into LRU_INACTIVE_FILE_LIST also
means we can reclaim the pages without swap support. This idea is
suggested by Johannes.
This patch doesn't move MADV_FREE pages to LRU_INACTIVE_FILE list yet to
avoid bisect failure, next patch will do it.
The patch is based on Minchan's original patch.
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/2f87063c1e9354677b7618c647abde77b07561e5.1487965799.git.shli@fb.com
Signed-off-by: Shaohua Li <shli@fb.com>
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There are a few places the code assumes anonymous pages should have
SwapBacked flag set. MADV_FREE pages are anonymous pages but we are
going to add them to LRU_INACTIVE_FILE list and clear SwapBacked flag
for them. The assumption doesn't hold any more, so fix them.
Link: http://lkml.kernel.org/r/3945232c0df3dd6c4ef001976f35a95f18dcb407.1487965799.git.shli@fb.com
Signed-off-by: Shaohua Li <shli@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "mm: fix some MADV_FREE issues", v5.
We are trying to use MADV_FREE in jemalloc. Several issues are found.
Without solving the issues, jemalloc can't use the MADV_FREE feature.
- Doesn't support system without swap enabled. Because if swap is off,
we can't or can't efficiently age anonymous pages. And since
MADV_FREE pages are mixed with other anonymous pages, we can't
reclaim MADV_FREE pages. In current implementation, MADV_FREE will
fallback to MADV_DONTNEED without swap enabled. But in our
environment, a lot of machines don't enable swap. This will prevent
our setup using MADV_FREE.
- Increases memory pressure. page reclaim bias file pages reclaim
against anonymous pages. This doesn't make sense for MADV_FREE pages,
because those pages could be freed easily and refilled with very
slight penality. Even page reclaim doesn't bias file pages, there is
still an issue, because MADV_FREE pages and other anonymous pages are
mixed together. To reclaim a MADV_FREE page, we probably must scan a
lot of other anonymous pages, which is inefficient. In our test, we
usually see oom with MADV_FREE enabled and nothing without it.
- Accounting. There are two accounting problems. We don't have a global
accounting. If the system is abnormal, we don't know if it's a
problem from MADV_FREE side. The other problem is RSS accounting.
MADV_FREE pages are accounted as normal anon pages and reclaimed
lazily, so application's RSS becomes bigger. This confuses our
workloads. We have monitoring daemon running and if it finds
applications' RSS becomes abnormal, the daemon will kill the
applications even kernel can reclaim the memory easily.
To address the first the two issues, we can either put MADV_FREE pages
into a separate LRU list (Minchan's previous patches and V1 patches), or
put them into LRU_INACTIVE_FILE list (suggested by Johannes). The
patchset use the second idea. The reason is LRU_INACTIVE_FILE list is
tiny nowadays and should be full of used once file pages. So we can
still efficiently reclaim MADV_FREE pages there without interference
with other anon and active file pages. Putting the pages into inactive
file list also has an advantage which allows page reclaim to prioritize
MADV_FREE pages and used once file pages. MADV_FREE pages are put into
the lru list and clear SwapBacked flag, so PageAnon(page) &&
!PageSwapBacked(page) will indicate a MADV_FREE pages. These pages will
directly freed without pageout if they are clean, otherwise normal swap
will reclaim them.
For the third issue, the previous post adds global accounting and a
separate RSS count for MADV_FREE pages. The problem is we never get
accurate accounting for MADV_FREE pages. The pages are mapped to
userspace, can be dirtied without notice from kernel side. To get
accurate accounting, we could write protect the page, but then there is
extra page fault overhead, which people don't want to pay. Jemalloc
guys have concerns about the inaccurate accounting, so this post drops
the accounting patches temporarily. The info exported to
/proc/pid/smaps for MADV_FREE pages are kept, which is the only place we
can get accurate accounting right now.
This patch (of 6):
Johannes pointed out TTU_LZFREE is unnecessary. It's true because we
always have the flag set if we want to do an unmap. For cases we don't
do an unmap, the TTU_LZFREE part of code should never run.
Also the TTU_UNMAP is unnecessary. If no other flags set (for example,
TTU_MIGRATION), an unmap is implied.
The patch includes Johannes's cleanup and dead TTU_ACTION macro removal
code
Link: http://lkml.kernel.org/r/4be3ea1bc56b26fd98a54d0a6f70bec63f6d8980.1487965799.git.shli@fb.com
Signed-off-by: Shaohua Li <shli@fb.com>
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The backoff mechanism is not needed. If we have MAX_RECLAIM_RETRIES
loops without progress, we'll OOM anyway; backing off might cut one or
two iterations off that in the rare OOM case. If we have intermittent
success reclaiming a few pages, the backoff function gets reset also,
and so is of little help in these scenarios.
We might want a backoff function for when there IS progress, but not
enough to be satisfactory. But this isn't that. Remove it.
Link: http://lkml.kernel.org/r/20170228214007.5621-10-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This reverts commit d7f05528ee.
Now that reclaimability of a node is no longer based on the ratio
between pages scanned and theoretically reclaimable pages, we can remove
accounting tricks for pages skipped due to zone constraints.
Link: http://lkml.kernel.org/r/20170228214007.5621-9-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NR_PAGES_SCANNED counts number of pages scanned since the last page free
event in the allocator. This was used primarily to measure the
reclaimability of zones and nodes, and determine when reclaim should
give up on them. In that role, it has been replaced in the preceding
patches by a different mechanism.
Being implemented as an efficient vmstat counter, it was automatically
exported to userspace as well. It's however unlikely that anyone
outside the kernel is using this counter in any meaningful way.
Remove the counter and the unused pgdat_reclaimable().
Link: http://lkml.kernel.org/r/20170228214007.5621-8-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 246e87a939 ("memcg: fix get_scan_count() for small targets")
sought to avoid high reclaim priorities for memcg by forcing it to scan
a minimum amount of pages when lru_pages >> priority yielded nothing.
This was done at a time when reclaim decisions like dirty throttling
were tied to the priority level.
Nowadays, the only meaningful thing still tied to priority dropping
below DEF_PRIORITY - 2 is gating whether laptop_mode=1 is generally
allowed to write. But that is from an era where direct reclaim was
still allowed to call ->writepage, and kswapd nowadays avoids writes
until it's scanned every clean page in the system. Potential changes to
how quick sc->may_writepage could trigger are of little concern.
Remove the force_scan stuff, as well as the ugly multi-pass target
calculation that it necessitated.
Link: http://lkml.kernel.org/r/20170228214007.5621-7-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 246e87a939 ("memcg: fix get_scan_count() for small targets")
sought to avoid high reclaim priorities for kswapd by forcing it to scan
a minimum amount of pages when lru_pages >> priority yielded nothing.
Commit b95a2f2d48 ("mm: vmscan: convert global reclaim to per-memcg
LRU lists"), due to switching global reclaim to a round-robin scheme
over all cgroups, had to restrict this forceful behavior to
unreclaimable zones in order to prevent massive overreclaim with many
cgroups.
The latter patch effectively neutered the behavior completely for all
but extreme memory pressure. But in those situations we might as well
drop the reclaimers to lower priority levels. Remove the check.
Link: http://lkml.kernel.org/r/20170228214007.5621-6-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NUMA balancing already checks the watermarks of the target node to
decide whether it's a suitable balancing target. Whether the node is
reclaimable or not is irrelevant when we don't intend to reclaim.
Link: http://lkml.kernel.org/r/20170228214007.5621-5-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 1d82de618d ("mm, vmscan: make kswapd reclaim in terms of
nodes") allowed laptop_mode=1 to start writing not just when the
priority drops to DEF_PRIORITY - 2 but also when the node is
unreclaimable.
That appears to be a spurious change in this patch as I doubt the series
was tested with laptop_mode, and neither is that particular change
mentioned in the changelog. Remove it, it's still recent.
Link: http://lkml.kernel.org/r/20170228214007.5621-4-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
PF_MEMALLOC direct reclaimers get throttled on a node when the sum of
all free pages in each zone fall below half the min watermark. During
the summation, we want to exclude zones that don't have reclaimables.
Checking the same pgdat over and over again doesn't make sense.
Fixes: 599d0c954f ("mm, vmscan: move LRU lists to node")
Link: http://lkml.kernel.org/r/20170228214007.5621-3-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Jia He <hejianet@gmail.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Patch series "mm: kswapd spinning on unreclaimable nodes - fixes and
cleanups".
Jia reported a scenario in which the kswapd of a node indefinitely spins
at 100% CPU usage. We have seen similar cases at Facebook.
The kernel's current method of judging its ability to reclaim a node (or
whether to back off and sleep) is based on the amount of scanned pages
in proportion to the amount of reclaimable pages. In Jia's and our
scenarios, there are no reclaimable pages in the node, however, and the
condition for backing off is never met. Kswapd busyloops in an attempt
to restore the watermarks while having nothing to work with.
This series reworks the definition of an unreclaimable node based not on
scanning but on whether kswapd is able to actually reclaim pages in
MAX_RECLAIM_RETRIES (16) consecutive runs. This is the same criteria
the page allocator uses for giving up on direct reclaim and invoking the
OOM killer. If it cannot free any pages, kswapd will go to sleep and
leave further attempts to direct reclaim invocations, which will either
make progress and re-enable kswapd, or invoke the OOM killer.
Patch #1 fixes the immediate problem Jia reported, the remainder are
smaller fixlets, cleanups, and overall phasing out of the old method.
Patch #6 is the odd one out. It's a nice cleanup to get_scan_count(),
and directly related to #5, but in itself not relevant to the series.
If the whole series is too ambitious for 4.11, I would consider the
first three patches fixes, the rest cleanups.
This patch (of 9):
Jia He reports a problem with kswapd spinning at 100% CPU when
requesting more hugepages than memory available in the system:
$ echo 4000 >/proc/sys/vm/nr_hugepages
top - 13:42:59 up 3:37, 1 user, load average: 1.09, 1.03, 1.01
Tasks: 1 total, 1 running, 0 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 12.5 sy, 0.0 ni, 85.5 id, 2.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 31371520 total, 30915136 used, 456384 free, 320 buffers
KiB Swap: 6284224 total, 115712 used, 6168512 free. 48192 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
76 root 20 0 0 0 0 R 100.0 0.000 217:17.29 kswapd3
At that time, there are no reclaimable pages left in the node, but as
kswapd fails to restore the high watermarks it refuses to go to sleep.
Kswapd needs to back away from nodes that fail to balance. Up until
commit 1d82de618d ("mm, vmscan: make kswapd reclaim in terms of
nodes") kswapd had such a mechanism. It considered zones whose
theoretically reclaimable pages it had reclaimed six times over as
unreclaimable and backed away from them. This guard was erroneously
removed as the patch changed the definition of a balanced node.
However, simply restoring this code wouldn't help in the case reported
here: there *are* no reclaimable pages that could be scanned until the
threshold is met. Kswapd would stay awake anyway.
Introduce a new and much simpler way of backing off. If kswapd runs
through MAX_RECLAIM_RETRIES (16) cycles without reclaiming a single
page, make it back off from the node. This is the same number of shots
direct reclaim takes before declaring OOM. Kswapd will go to sleep on
that node until a direct reclaimer manages to reclaim some pages, thus
proving the node reclaimable again.
[hannes@cmpxchg.org: check kswapd failure against the cumulative nr_reclaimed count]
Link: http://lkml.kernel.org/r/20170306162410.GB2090@cmpxchg.org
[shakeelb@google.com: fix condition for throttle_direct_reclaim]
Link: http://lkml.kernel.org/r/20170314183228.20152-1-shakeelb@google.com
Link: http://lkml.kernel.org/r/20170228214007.5621-2-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Reported-by: Jia He <hejianet@gmail.com>
Tested-by: Jia He <hejianet@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Each slab kmem cache has per cpu array caches. The array caches are
created when the kmem_cache is created, either via kmem_cache_create()
or lazily when the first object is allocated in context of a kmem
enabled memcg. Array caches are replaced by writing to /proc/slabinfo.
Array caches are protected by holding slab_mutex or disabling
interrupts. Array cache allocation and replacement is done by
__do_tune_cpucache() which holds slab_mutex and calls
kick_all_cpus_sync() to interrupt all remote processors which confirms
there are no references to the old array caches.
IPIs are needed when replacing array caches. But when creating a new
array cache, there's no need to send IPIs because there cannot be any
references to the new cache. Outside of memcg kmem accounting these
IPIs occur at boot time, so they're not a problem. But with memcg kmem
accounting each container can create kmem caches, so the IPIs are
wasteful.
Avoid unnecessary IPIs when creating array caches.
Test which reports the IPI count of allocating slab in 10000 memcg:
import os
def ipi_count():
with open("/proc/interrupts") as f:
for l in f:
if 'Function call interrupts' in l:
return int(l.split()[1])
def echo(val, path):
with open(path, "w") as f:
f.write(val)
n = 10000
os.chdir("/mnt/cgroup/memory")
pid = str(os.getpid())
a = ipi_count()
for i in range(n):
os.mkdir(str(i))
echo("1G\n", "%d/memory.limit_in_bytes" % i)
echo("1G\n", "%d/memory.kmem.limit_in_bytes" % i)
echo(pid, "%d/cgroup.procs" % i)
open("/tmp/x", "w").close()
os.unlink("/tmp/x")
b = ipi_count()
print "%d loops: %d => %d (+%d ipis)" % (n, a, b, b-a)
echo(pid, "cgroup.procs")
for i in range(n):
os.rmdir(str(i))
patched: 10000 loops: 1069 => 1170 (+101 ipis)
unpatched: 10000 loops: 1192 => 48933 (+47741 ipis)
Link: http://lkml.kernel.org/r/20170416214544.109476-1-gthelen@google.com
Signed-off-by: Greg Thelen <gthelen@google.com>
Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Configfs is the interface for ocfs2-tools to set configure to kernel and
$configfs_dir/cluster/$clustername/heartbeat/dead_threshold is the one
used to configure heartbeat dead threshold. Kernel has a default value
of it but user can set O2CB_HEARTBEAT_THRESHOLD in /etc/sysconfig/o2cb
to override it.
Commit 45b997737a ("ocfs2/cluster: use per-attribute show and store
methods") changed heartbeat dead threshold name while ocfs2-tools did
not, so ocfs2-tools won't set this configurable and the default value is
always used. So revert it.
Fixes: 45b997737a ("ocfs2/cluster: use per-attribute show and store methods")
Link: http://lkml.kernel.org/r/1490665245-15374-1-git-send-email-junxiao.bi@oracle.com
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Acked-by: Joseph Qi <jiangqi903@gmail.com>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In many of clk_disable() implementations, it is a no-op for a NULL
pointer input, but this is one of the exceptions.
Making it treewide consistent will allow clock consumers to call
clk_disable() without NULL pointer check.
Link: http://lkml.kernel.org/r/1490692624-11931-4-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Steven Miao <realmz6@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Here are some of the more common spelling mistakes that I've found while
fixing up spelling mistakes in kernel error message text. They probably
should be added to this list so we don't keep on seeing them appearing
again.
Link: http://lkml.kernel.org/r/20170421122534.5378-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Joe Perches <joe@perches.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Interrupt enable/disabled with spinlock is not a valid operation for RT
as it can make executing tasks sleep from a non-sleepable context. So
convert it to spin_lock_irq[save, restore].
Link: http://lkml.kernel.org/r/1492065666-3816-1-git-send-email-pagupta@redhat.com
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Ville Syrjl <ville.syrjala@linux.intel.com>
Cc: Miles Chen <miles.chen@mediatek.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- idr usage and locking changes
- build fix for hns
- ipoib debug path record file fix
- hfi1 updates
- core RDMA netdev addition
- Intel VNIC driver addition
- Enhanced accelerators for IPoIB addition
- Debug cleanups in cxgb3/4
- Trivial cleanups from SF Markus Elfring
- Misc rxe fixes from Mellanox
- Misc ipoib fixes from Mellanox
- Lots of mlx4/mlx5 changes from Mellanox
- Misc fixes across the RDMA subsystem
- ODP paging fixes and improvements
- qedr updates
- hfi1 updates
- OPA port info patches
- OPA AH patches
- OPA SA Query patches
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma updates from Doug Ledford:
"More exchaustive description of primary updates in this release:
- Lots of driver fixes and misc fixes across the board.
- I had to base on a net-next tree because the IPoIB Accelorator
patches needed it.
Unfortunately, it was known to Mellanox that there would need to be
an IPoIB accelorator patch to the net tree (which left some
functions turned off by an #ifdef construct to avoid warnings about
defined but unused functions), then one to the RDMA tree, then a
fixup that went back and re-enabled the functions in the net tree
and enabled their use in the rdma tree
Also, a sparse fix was sent to the net tree after I did my pull,
and the fixup patch conflicts quite directly with that sparse fix,
so I'm going to submit the fixup patch towards the end of the merge
window by itself and based upon your master branch at the time.
- Two separate rounds of hfi1 fixes, one that got dropped from last
release because it came in just a day or two before the end of the
merge window and then the one from this release cycle.
Of note is that I now have a third series that just landed from
Intel yesterday. It is not included in this pull request, but I may
submit it by the end of the week. I'll talk to Intel about
improving the timing of thier submissions for my workflow.
- Changes to our idr usage in the RDMA subsystem that will tie into
our cgroup management and also into the upcoming changes for the
RDMA kernel<->userspace API.
- Addition of support for a netdev to be tied to an RDMA device at
the core level
- Addition of the VNIC driver from Intel.
While IPoIB provides IP over InfiniBand (and *only* IP, no lower
layer protocol headers are allowed or supported), the VNIC driver
presents a virtual Ethernet device with support for things like
varying Ethertypes, VLANs, priorities and other features of
Ethernet.
The virtual devices are centrally managed by the OPA fabric
manager, making this (for the time being) a strictly OPA specific
feature.
- Improvements to the On-Demand Paging support in the RDMA subsystem.
- Addition of three significant OPA changes.
While we added OPA support some time ago (via the hfi1 driver), the
RDMA subsystem has so far glossed over the areas where OPA and
InfiniBand differ.
With this release we are starting to add support for the OPA
extensions into the RDMA core in the following area: Extended port
information for OPA is now supported, extended Address Handle
attributes for OPA are now supported, and extended SA Queries to
get OPA specific subnet information is now supported.
Concise summary from the tag:
- idr usage and locking changes
- build fix for hns
- ipoib debug path record file fix
- hfi1 updates
- core RDMA netdev addition
- Intel VNIC driver addition
- Enhanced accelerators for IPoIB addition
- Debug cleanups in cxgb3/4
- Trivial cleanups from SF Markus Elfring
- Misc rxe fixes from Mellanox
- Misc ipoib fixes from Mellanox
- Lots of mlx4/mlx5 changes from Mellanox
- Misc fixes across the RDMA subsystem
- ODP paging fixes and improvements
- qedr updates
- hfi1 updates
- OPA port info patches
- OPA AH patches
- OPA SA Query patches"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (191 commits)
infiniband: avoid dereferencing uninitialized dst on error path
IB/SA: Add OPA addr header
IB/mlx5: Add port_xmit_wait to counter registers read
IB/ocrdma: fix out of bounds access to local buffer
IB/mlx4: Fix incorrect order of formal and actual parameters
IB/mlx4: Change flush logic so it adheres to the variable name
mlx5: Fix mlx5_ib_map_mr_sg mr length
IB/rxe: Don't clamp residual length to mtu
IB/SA: Add support to query OPA path records
IB/SA: Add OPA path record type
IB/SA: Split struct sa_path_rec based on IB and ROCE specific fields
IB/SA: Introduce path record specific types
IB/SA: Rename ib_sa_path_rec to sa_path_rec
IB/CM: Add braces when using sizeof
IB/core: Define 'opa' rdma_ah_attr type
IB/core: Define 'ib' and 'roce' rdma_ah_attr types
IB/core: Use rdma_ah_attr accessor functions
IB/core: Add accessor functions for rdma_ah_attr fields
IB/PVRDMA: Rename ib_ah_attr related functions
IB/mthca: Rename to_ib_ah_attr to to_rdma_ah_attr
...
Pull input subsystem updates from Dmitry Torokhov:
- a big update from Mauro converting input documentation to ReST format
- Synaptics PS/2 is now aware of SMBus companion devices, which means
that we can now use native RMI4 protocol to handle touchpads, instead
of relying on legacy PS/2 mode.
- we removed support from BMA180 accelerometer from input devices as it
is now handled properly by IIO
- update to TSC2007 to corretcly report pressure
- other miscellaneous driver fixes.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (152 commits)
Input: ar1021_i2c - use BIT to check for a bit
Input: twl4030-pwrbutton - use input_set_capability() helper
Input: twl4030-pwrbutton - use correct device for irq request
Input: ar1021_i2c - enable touch mode during open
Input: add uinput documentation
dt-bindings: input: add bindings document for ar1021_i2c driver
dt-bindings: input: rotary-encoder: fix typo
Input: xen-kbdfront - add module parameter for setting resolution
ARM: pxa/raumfeld: fix compile error in rotary controller resources
Input: xpad - do not suggest writing to Dominic
Input: xpad - don't use literal blocks inside footnotes
Input: xpad - note that usb/devices is now at /sys/kernel/debug/
Input: docs - freshen up introduction
Input: docs - split input docs into kernel- and user-facing
Input: docs - note that MT-A protocol is obsolete
Input: docs - update joystick documentation a bit
Input: docs - remove disclaimer/GPL notice
Input: fix "Game console" heading level in joystick documentation
Input: rotary-encoder - remove references to platform data from docs
Input: move documentation for Amiga CD32
...
There's quite a lot of small driver specific fixes and enhancements in
this release but the main activity has been around the loopback and
spidev test drivers which is good to see as it should hopefully help
improve the quality of all the drivers as people start to make use of
the new code:
- Additional tests in the loopback test driver for vmalloc()
compatibility and around delays together with fixes for existing
tests.
- Support for testing continuous data transfer for use in soak testing.
- Device property support for board info platforms.
- Support for registering empty sets of devices via board info (useful
when writing code to enumerate hardware automatically).
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Merge tag 'spi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"There's quite a lot of small driver specific fixes and enhancements in
this release but the main activity has been around the loopback and
spidev test drivers which is good to see as it should hopefully help
improve the quality of all the drivers as people start to make use of
the new code:
- Additional tests in the loopback test driver for vmalloc()
compatibility and around delays together with fixes for existing
tests.
- Support for testing continuous data transfer for use in soak
testing.
- Device property support for board info platforms.
- Support for registering empty sets of devices via board info
(useful when writing code to enumerate hardware automatically)"
* tag 'spi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (52 commits)
spi: cadence: Allow for GPIO pins to be used as chipselects
spi-imx: Implements handling of the SPI_READY mode flag.
spi: tegra: fix spelling mistake: "trasfer" -> "transfer"
spi: spi-ti-qspi: Use bounce buffer if read buffer is not DMA'ble
spi: Add can_dma like interface for spi_flash_read
spi: dw: Disable clock after unregistering the host
spi: double time out tolerance
spi: atmel: add deepest PM support to SAMA5D2
spi: atmel: factorize reusable code for SPI controller init
spi: orion: add LSB support
spi: pl022: don't use uninitialized variable
spi: loopback-test: fix spelling mistake: "minimam" -> "minimum"
spi: dynamycally allocated message initialization
spi: spi-ti-qspi: Remove unused dma_dev variable
spi: omap2-mcspi: poll OMAP2_MCSPI_CHSTAT_RXS for PIO transfer
spi: spi-ti-qspi: Use dma_engine wrapper for dma memcpy call
spi: spidev_test: add option to continuously transfer data
spi: loopback-test: fix potential integer overflow on multiple
spi: sun6i: update max transfer size reported
spi: pl022: Document property values
...
Quite a lot going on with the regulator API for this release, much more
in the core than in the drivers for a change:
- Fixes for voltage change propagation through dumb power switches.
- A notification when regulators are enabled.
- A new settling time property for regulators where the time taken to
move to a new voltage is not related to the size of the change.
- Some reorganization of the Arizona drivers in preparation for sharing
the code with the next generation devices they've been integrated
with.
- Support for newer Freescale chips in the Anatop regulator.
- A new driver for voltage controlled regulators to cope with some
exciting ChromeOS hardware designs.
- Support for Rohm BD9571MWV-M and TI TPS65132.
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Merge tag 'regulator-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"Quite a lot going on with the regulator API for this release, much
more in the core than in the drivers for a change:
- Fixes for voltage change propagation through dumb power switches.
- A notification when regulators are enabled.
- A new settling time property for regulators where the time taken to
move to a new voltage is not related to the size of the change.
- Some reorganization of the Arizona drivers in preparation for
sharing the code with the next generation devices they've been
integrated with.
- Support for newer Freescale chips in the Anatop regulator.
- A new driver for voltage controlled regulators to cope with some
exciting ChromeOS hardware designs.
- Support for Rohm BD9571MWV-M and TI TPS65132"
* tag 'regulator-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (51 commits)
regulator: Add ROHM BD9571MWV-M PMIC regulator driver
regulator: arizona-ldo1: Factor out generic initialization
regulator: arizona-ldo1: Make arizona_ldo1 independent of struct arizona
regulator: arizona-ldo1: Move pdata into a separate structure
regulator: arizona-micsupp: Factor out generic initialization
regulator: arizona-micsupp: Make arizona_micsupp independent of struct arizona
regulator: arizona-micsupp: Move pdata into a separate structure
regulator: arizona: Split KConfig options for LDO1 and MICSUPP regulators
regulator: anatop: make regulator name property required
regulator: tps65023: Fix inverted core enable logic.
regulator: anatop: make sure regulator name is properly defined
regulator: core: Allow dummy regulators for supplies
regulator: core: Only propagate voltage changes to if it can change voltages
regulator: vctrl: Fix out of bounds array access for vctrl->vtable
regulator: tps65132: fix platform_no_drv_owner.cocci warnings
regulator: tps65132: Fix off-by-one for .max_register setting
regulator: anatop: set default voltage selector for pcie
regulator: tps65132: add device-tree binding
regulator: tps65132: add regulator driver for TI TPS65132
regulator: anatop: remove unneeded name field of struct anatop_regulator
...
Pull i2c updates from Wilfram Sang:
"I2C has the following updates for you:
- an immutable cross-subsystem branch fixing PMIC access on Intel
Baytrail
- bigger driver updates to the designware, meson, exynos5 drivers
- new i2c_acpi_new_device() function to create devices from ACPI
- struct i2c_driver has now a flag 'disable_i2c_core_irq_mapping' to
allow custom IRQ mapping in case the default does not fit
- mux subsystem centralized error messages in its core
- new driver for ltc4306 i2c mux
- usual set of small updates"
* 'i2c/for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (44 commits)
i2c: thunderx: Enable HWMON class probing
i2c: rcar: clarify PM handling with more comments
i2c: rcar: fix resume by always initializing registers before transfer
i2c: tegra: fix spelling mistake: "contoller" -> "controller"
i2c: exynos5: use core helper to get driver data
i2c: exynos5: de-duplicate error logs on clock setup
i2c: exynos5: simplify clock frequency handling
i2c: exynos5: simplify timings calculation
i2c: designware-baytrail: fix potential null pointer dereference on dev
i2c: designware: Get selected speed mode sda-hold-time via ACPI
[media] cx231xx: stop double error reporting
i2c: core: Allow drivers to disable i2c-core irq mapping
i2c: core: Add new i2c_acpi_new_device helper function
i2c: core: Allow getting ACPI info by index
i2c: img-scb: use setup_timer
i2c: i2c-scmi: add a MS HID
i2c: mux: ltc4306: LTC4306 and LTC4305 I2C multiplexer/switch
dt-bindings: i2c: mux: ltc4306: Add dt-bindings for I2C multiplexer/switch
i2c: mux: reg: stop double error reporting
i2c: mux: pinctrl: stop double error reporting
...
It was a relatively calm development cycle, and no scaring changes are
seen in both core and driver sides. Here are some highlights:
ASoC:
- A new API for hooking up jacks more generically and easily
- Card longname is set based on DMI for a unique UCM profile
- Lots of Intel driver fixes: Atom, Broxton, Skylake and newer chips
- New drivers for Cirrus CS35L35, DIO DIO2125, Everest ES7132,
HiSilicon hi6210, Maxim MAX98927, MT2701 systems with WM8960, Nuvoton
NAU8824, Odroid systems, ST STM32 SAI controllers and x86 systems with
DA7213
HD-audio:
- Many new quirks to support headset for various devices (mostly ASUS
ones) as usual
- Support for dual codecs on some Gigabyte mobos and Lenovo laptop
- Improvement on PCM position reporting for Skylake and newer
FireWire:
- New drivers for MOTU and RME Fireface series
- Updates for Digidesign Digi00x and TASCAM series
- Support for tracepoints
Others:
- USB-audio: improved support for quirk_alias option
- Cleanups, constification allover the places
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Merge tag 'sound-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"It was a relatively calm development cycle, and no scaring changes are
seen in both core and driver sides. Here are some highlights:
ASoC:
- A new API for hooking up jacks more generically and easily
- Card longname is set based on DMI for a unique UCM profile
- Lots of Intel driver fixes: Atom, Broxton, Skylake and newer chips
- New drivers for Cirrus CS35L35, DIO DIO2125, Everest ES7132,
HiSilicon hi6210, Maxim MAX98927, MT2701 systems with WM8960,
Nuvoton NAU8824, Odroid systems, ST STM32 SAI controllers and x86
systems with DA7213
HD-audio:
- Many new quirks to support headset for various devices (mostly ASUS
ones) as usual
- Support for dual codecs on some Gigabyte mobos and Lenovo laptop
- Improvement on PCM position reporting for Skylake and newer
FireWire:
- New drivers for MOTU and RME Fireface series
- Updates for Digidesign Digi00x and TASCAM series
- Support for tracepoints
Others:
- USB-audio: improved support for quirk_alias option
- Cleanups, constification allover the places"
* tag 'sound-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (299 commits)
ASoC: codec: wm8960: Relax bit clock computation when using PLL
ASoC: codec: wm9860: avoid maybe-uninitialized warning
ASoC: nau8824: leave Class D gain at chip default
ASoC: nau8824: rename controls to match DAPM controls
ASoC: Intel: Skylake: Return negative error code
ASoC: Intel: Skylake: Fix unused variable warning
ASoC: Intel: Skylake: fix uninitialized pointer use
ASoC: sti: Fix error handling if of_clk_get() fails
ASoC: cs4271: configure reset GPIO as output
ASoC: dwc: Disallow building designware_pcm as a module
ALSA: ali5451: fix spelling mistake in "ali_capture_preapre"
ASoC: stm32: add SAI driver
ASoC: stm32: add bindings for SAI
ASoC: Intel: Skylake: Add loadable module support on KBL platform
ASoC: Intel: Skylake: Modify load_lib_ipc arguments for a nowait version
ASoC: Intel: Skylake: Register dsp_fw_ops for kabylake
ASoC: Intel: Skylake: Modify arguments to reuse module transfer function
ASoC: Intel: Skylake: Commonize library load
ASoC: Intel: Skylake: Move sst common initialization to a helper function
ASoC: nau8824: new driver
...
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Merge tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux
Pull drm u pdates from Dave Airlie:
"This is the main drm pull request for v4.12. Apart from two fixes
pulls, everything should have been in drm-next for at least 2 weeks.
The biggest thing in here is AMD released the public headers for their
upcoming VEGA GPUs. These as always are quite a sizeable chunk of
header files. They've also added initial non-display support for those
GPUs, though they aren't available in production yet.
Otherwise it's pretty much normal.
New bridge drivers:
- megachips-stdpxxxx-ge-b850v3-fw LVDS->DP++
- generic LVDS bridge support.
Core:
- Displayport link train failure reporting to userspace
- debugfs interface cleaned up
- subsystem TODO in kerneldoc now
- Extended fbdev support (flipping and vblank wait)
- drm_platform removed
- EDP CRC support in helper
- HF-VSDB SCDC support in EDID parser
- Lots of code cleanups and header extraction
- Thunderbolt external GPU awareness
- Atomic helper improvements
- Documentation improvements
panel:
- Sitronix and Samsung new panel support
amdgpu:
- Preliminary vega10 support
- Multi-level page table support
- GPU sensor support for userspace
- PRT support for sparse buffers
- SR-IOV improvements
- Non-contig VRAM CPU mapping
i915:
- Atomic modesetting enabled by default on Gen5+
- LSPCON improvements
- Atomic state handling for cdclk
- GPU reset improvements
- In-kernel unit tests
- Geminilake improvements and color manager support
- Designware i2c fixes
- vblank evasion improvements
- Hotplug safe connector iterators
- GVT scheduler QoS support
- GVT Kabylake support
nouveau:
- Acceleration support for Pascal (GP10x).
- Rearchitecture of code handling proprietary signed firmware
- Fix GTX 970 with odd MMU configuration
- GP10B support
- GP107 acceleration support
vmwgfx:
- Atomic modesetting support for vmwgfx
omapdrm:
- Support for render nodes
- Refactor omapdss code
- Fix some probe ordering issues
- Fix too dark RGB565 rendering
sunxi:
- prelim rework for multiple pipes.
mali-dp:
- Color management support
- Plane scaling
- Power management improvements
imx-drm:
- Prefetch Resolve Engine/Gasket on i.MX6QP
- Deferred plane disabling
- Separate alpha support
mediatek:
- Mediatek SoC MT2701 support
rcar-du:
- Gen3 HDMI support
msm:
- 4k support for newer chips
- OPP bindings for gpu
- prep work for per-process pagetables
vc4:
- HDMI audio support
- fixes
qxl:
- minor fixes.
dw-hdmi:
- PHY improvements
- CSC fixes
- Amlogic GX SoC support"
* tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux: (1778 commits)
drm/nouveau/fb/gf100-: Fix 32 bit wraparound in new ram detection
drm/nouveau/secboot/gm20b: fix the error return code in gm20b_secboot_tegra_read_wpr()
drm/nouveau/kms: Increase max retries in scanout position queries.
drm/nouveau/bios/bitP: check that table is long enough for optional pointers
drm/nouveau/fifo/nv40: no ctxsw for pre-nv44 mpeg engine
drm: mali-dp: use div_u64 for expensive 64-bit divisions
drm/i915: Confirm the request is still active before adding it to the await
drm/i915: Avoid busy-spinning on VLV_GLTC_PW_STATUS mmio
drm/i915/selftests: Allocate inode/file dynamically
drm/i915: Fix system hang with EI UP masked on Haswell
drm/i915: checking for NULL instead of IS_ERR() in mock selftests
drm/i915: Perform link quality check unconditionally during long pulse
drm/i915: Fix use after free in lpe_audio_platdev_destroy()
drm/i915: Use the right mapping_gfp_mask for final shmem allocation
drm/i915: Make legacy cursor updates more unsynced
drm/i915: Apply a cond_resched() to the saturated signaler
drm/i915: Park the signaler before sleeping
drm: mali-dp: Check the mclk rate and allow up/down scaling
drm: mali-dp: Enable image enhancement when scaling
drm: mali-dp: Add plane upscaling support
...
Pull quota, reiserfs, udf and ext2 updates from Jan Kara:
"The branch contains changes to quota code so that it does not modify
persistent flags in inode->i_flags (it was the only place in kernel
doing that) and handle it inside filesystem's quotaon/off handlers
instead.
The branch also contains two UDF cleanups, a couple of reiserfs fixes
and one fix for ext2 quota locking"
* 'generic' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
ext4: Improve comments in ext4_quota_{on|off}()
udf: use kmap_atomic for memcpy copying
udf: use octal for permissions
quota: Remove dquot_quotactl_ops
reiserfs: Remove i_attrs_to_sd_attrs()
reiserfs: Remove useless setting of i_flags
jfs: Remove jfs_get_inode_flags()
ext2: Remove ext2_get_inode_flags()
ext4: Remove ext4_get_inode_flags()
quota: Stop setting IMMUTABLE and NOATIME flags on quota files
jfs: Set flags on quota files directly
ext2: Set flags on quota files directly
reiserfs: Set flags on quota files directly
ext4: Set flags on quota files directly
reiserfs: Protect dquot_writeback_dquots() by s_umount semaphore
reiserfs: Make cancel_old_flush() reliable
ext2: Call dquot_writeback_dquots() with s_umount held
reiserfs: avoid a -Wmaybe-uninitialized warning
commit 1647b9b9 "brd: add dax_operations support" introduced the allocation
and freeing of a dax_device, but the allocated dax_device is not stored
into the brd_device, so brd_del_one() will eventually operate on an
uninitialized brd->dax_dev.
Fix this by storing the allocated dax_device to brd->dax_dev.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Pull fsnotify updates from Jan Kara:
"The branch contains mainly a rework of fsnotify infrastructure fixing
a shortcoming that we have waited for response to fanotify permission
events with SRCU read lock held and when the process consuming events
was slow to respond the kernel has stalled.
It also contains several cleanups of unnecessary indirections in
fsnotify framework and a bugfix from Amir fixing leakage of kernel
internal errno to userspace"
* 'fsnotify' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (37 commits)
fanotify: don't expose EOPENSTALE to userspace
fsnotify: remove a stray unlock
fsnotify: Move ->free_mark callback to fsnotify_ops
fsnotify: Add group pointer in fsnotify_init_mark()
fsnotify: Drop inode_mark.c
fsnotify: Remove fsnotify_find_{inode|vfsmount}_mark()
fsnotify: Remove fsnotify_detach_group_marks()
fsnotify: Rename fsnotify_clear_marks_by_group_flags()
fsnotify: Inline fsnotify_clear_{inode|vfsmount}_mark_group()
fsnotify: Remove fsnotify_recalc_{inode|vfsmount}_mask()
fsnotify: Remove fsnotify_set_mark_{,ignored_}mask_locked()
fanotify: Release SRCU lock when waiting for userspace response
fsnotify: Pass fsnotify_iter_info into handle_event handler
fsnotify: Provide framework for dropping SRCU lock in ->handle_event
fsnotify: Remove special handling of mark destruction on group shutdown
fsnotify: Detach mark from object list when last reference is dropped
fsnotify: Move queueing of mark for destruction into fsnotify_put_mark()
inotify: Do not drop mark reference under idr_lock
fsnotify: Free fsnotify_mark_connector when there is no mark attached
fsnotify: Lock object list with connector lock
...
prepare for his block core error code type checking improvements.
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Merge tag 'for-4.12/dm-post-merge-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull additional device mapper updates from Mike Snitzer:
"Here are some changes from Christoph that needed to be rebased ontop
of changes that were already merged into the device mapper tree. In
addition, these changes depend on the 'for-4.12/block' changes that
you've already merged.
- Cleanups to request-based DM and DM multipath from Christoph that
prepare for his block core error code type checking improvements"
* tag 'for-4.12/dm-post-merge-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: introduce a new DM_MAPIO_KILL return value
dm rq: change ->rq_end_io calling conventions
dm mpath: merge do_end_io into multipath_end_io
whether blocks should migrate to/from the cache. The bio-prison-v2
interface supports this improvement by enabling direct dispatch of
work to workqueues rather than having to delay the actual work
dispatch to the DM cache core. So the dm-cache policies are much more
nimble by being able to drive IO as they see fit. One immediate
benefit from the improved latency is a cache that should be much more
adaptive to changing workloads.
- Add a new DM integrity target that emulates a block device that has
additional per-sector tags that can be used for storing integrity
information.
- Add a new authenticated encryption feature to the DM crypt target that
builds on the capabilities provided by the DM integrity target.
- Add MD interface for switching the raid4/5/6 journal mode and update
the DM raid target to use it to enable aid4/5/6 journal write-back
support.
- Switch the DM verity target over to using the asynchronous hash crypto
API (this helps work better with architectures that have access to
off-CPU algorithm providers, which should reduce CPU utilization).
- Various request-based DM and DM multipath fixes and improvements from
Bart and Christoph.
- A DM thinp target fix for a bio structure leak that occurs for each
discard IFF discard passdown is enabled.
- A fix for a possible deadlock in DM bufio and a fix to re-check the
new buffer allocation watermark in the face of competing admin changes
to the 'max_cache_size_bytes' tunable.
- A couple DM core cleanups.
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Merge tag 'for-4.12/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- A major update for DM cache that reduces the latency for deciding
whether blocks should migrate to/from the cache. The bio-prison-v2
interface supports this improvement by enabling direct dispatch of
work to workqueues rather than having to delay the actual work
dispatch to the DM cache core. So the dm-cache policies are much more
nimble by being able to drive IO as they see fit. One immediate
benefit from the improved latency is a cache that should be much more
adaptive to changing workloads.
- Add a new DM integrity target that emulates a block device that has
additional per-sector tags that can be used for storing integrity
information.
- Add a new authenticated encryption feature to the DM crypt target
that builds on the capabilities provided by the DM integrity target.
- Add MD interface for switching the raid4/5/6 journal mode and update
the DM raid target to use it to enable aid4/5/6 journal write-back
support.
- Switch the DM verity target over to using the asynchronous hash
crypto API (this helps work better with architectures that have
access to off-CPU algorithm providers, which should reduce CPU
utilization).
- Various request-based DM and DM multipath fixes and improvements from
Bart and Christoph.
- A DM thinp target fix for a bio structure leak that occurs for each
discard IFF discard passdown is enabled.
- A fix for a possible deadlock in DM bufio and a fix to re-check the
new buffer allocation watermark in the face of competing admin
changes to the 'max_cache_size_bytes' tunable.
- A couple DM core cleanups.
* tag 'for-4.12/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (50 commits)
dm bufio: check new buffer allocation watermark every 30 seconds
dm bufio: avoid a possible ABBA deadlock
dm mpath: make it easier to detect unintended I/O request flushes
dm mpath: cleanup QUEUE_IF_NO_PATH bit manipulation by introducing assign_bit()
dm mpath: micro-optimize the hot path relative to MPATHF_QUEUE_IF_NO_PATH
dm: introduce enum dm_queue_mode to cleanup related code
dm mpath: verify __pg_init_all_paths locking assumptions at runtime
dm: verify suspend_locking assumptions at runtime
dm block manager: remove an unused argument from dm_block_manager_create()
dm rq: check blk_mq_register_dev() return value in dm_mq_init_request_queue()
dm mpath: delay requeuing while path initialization is in progress
dm mpath: avoid that path removal can trigger an infinite loop
dm mpath: split and rename activate_path() to prepare for its expanded use
dm ioctl: prevent stack leak in dm ioctl call
dm integrity: use previously calculated log2 of sectors_per_block
dm integrity: use hex2bin instead of open-coded variant
dm crypt: replace custom implementation of hex2bin()
dm crypt: remove obsolete references to per-CPU state
dm verity: switch to using asynchronous hash crypto API
dm crypt: use WQ_HIGHPRI for the IO and crypt workqueues
...
Pull MD updates from Shaohua Li:
- Add Partial Parity Log (ppl) feature found in Intel IMSM raid array
by Artur Paszkiewicz. This feature is another way to close RAID5
writehole. The Linux implementation is also available for normal
RAID5 array if specific superblock bit is set.
- A number of md-cluser fixes and enabling md-cluster array resize from
Guoqing Jiang
- A bunch of patches from Ming Lei and Neil Brown to rewrite MD bio
handling related code. Now MD doesn't directly access bio bvec,
bi_phys_segments and uses modern bio API for bio split.
- Improve RAID5 IO pattern to improve performance for hard disk based
RAID5/6 from me.
- Several patches from Song Liu to speed up raid5-cache recovery and
allow raid5 cache feature disabling in runtime.
- Fix a performance regression in raid1 resync from Xiao Ni.
- Other cleanup and fixes from various people.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: (84 commits)
md/raid10: skip spare disk as 'first' disk
md/raid1: Use a new variable to count flighting sync requests
md: clear WantReplacement once disk is removed
md/raid1/10: remove unused queue
md: handle read-only member devices better.
md/raid10: wait up frozen array in handle_write_completed
uapi: fix linux/raid/md_p.h userspace compilation error
md-cluster: Fix a memleak in an error handling path
md: support disabling of create-on-open semantics.
md: allow creation of mdNNN arrays via md_mod/parameters/new_array
raid5-ppl: use a single mempool for ppl_io_unit and header_page
md/raid0: fix up bio splitting.
md/linear: improve bio splitting.
md/raid5: make chunk_aligned_read() split bios more cleanly.
md/raid10: simplify handle_read_error()
md/raid10: simplify the splitting of requests.
md/raid1: factor out flush_bio_list()
md/raid1: simplify handle_read_error().
Revert "block: introduce bio_copy_data_partial"
md/raid1: simplify alloc_behind_master_bio()
...
Pull audit updates from Paul Moore:
"Fourteen audit patches for v4.12 that span the full range of fixes,
new features, and internal cleanups.
We have a patches to move to 64-bit timestamps, convert refcounts from
atomic_t to refcount_t, track PIDs using the pid struct instead of
pid_t, convert our own private audit buffer cache to a standard
kmem_cache, log kernel module names when they are unloaded, and
normalize the NETFILTER_PKT to make the userspace folks happier.
From a fixes perspective, the most important is likely the auditd
connection tracking RCU fix; it was a rather brain dead bug that I'll
take the blame for, but thankfully it didn't seem to affect many
people (only one report).
I think the patch subject lines and commit descriptions do a pretty
good job of explaining the details and why the changes are important
so I'll point you there instead of duplicating it here; as usual, if
you have any questions you know where to find us.
We also manage to take out more code than we put in this time, that
always makes me happy :)"
* 'stable-4.12' of git://git.infradead.org/users/pcmoore/audit:
audit: fix the RCU locking for the auditd_connection structure
audit: use kmem_cache to manage the audit_buffer cache
audit: Use timespec64 to represent audit timestamps
audit: store the auditd PID as a pid struct instead of pid_t
audit: kernel generated netlink traffic should have a portid of 0
audit: combine audit_receive() and audit_receive_skb()
audit: convert audit_watch.count from atomic_t to refcount_t
audit: convert audit_tree.count from atomic_t to refcount_t
audit: normalize NETFILTER_PKT
netfilter: use consistent ipv4 network offset in xt_AUDIT
audit: log module name on delete_module
audit: remove unnecessary semicolon in audit_watch_handle_event()
audit: remove unnecessary semicolon in audit_mark_handle_event()
audit: remove unnecessary semicolon in audit_field_valid()
Pull security subsystem updates from James Morris:
"Highlights:
IMA:
- provide ">" and "<" operators for fowner/uid/euid rules
KEYS:
- add a system blacklist keyring
- add KEYCTL_RESTRICT_KEYRING, exposes keyring link restriction
functionality to userland via keyctl()
LSM:
- harden LSM API with __ro_after_init
- add prlmit security hook, implement for SELinux
- revive security_task_alloc hook
TPM:
- implement contextual TPM command 'spaces'"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (98 commits)
tpm: Fix reference count to main device
tpm_tis: convert to using locality callbacks
tpm: fix handling of the TPM 2.0 event logs
tpm_crb: remove a cruft constant
keys: select CONFIG_CRYPTO when selecting DH / KDF
apparmor: Make path_max parameter readonly
apparmor: fix parameters so that the permission test is bypassed at boot
apparmor: fix invalid reference to index variable of iterator line 836
apparmor: use SHASH_DESC_ON_STACK
security/apparmor/lsm.c: set debug messages
apparmor: fix boolreturn.cocci warnings
Smack: Use GFP_KERNEL for smk_netlbl_mls().
smack: fix double free in smack_parse_opts_str()
KEYS: add SP800-56A KDF support for DH
KEYS: Keyring asymmetric key restrict method with chaining
KEYS: Restrict asymmetric key linkage using a specific keychain
KEYS: Add a lookup_restriction function for the asymmetric key type
KEYS: Add KEYCTL_RESTRICT_KEYRING
KEYS: Consistent ordering for __key_link_begin and restrict check
KEYS: Add an optional lookup_restriction hook to key_type
...
Nathan Fontenot says:
====================
ibmvnic: Updated reset handler and code fixes
This set of patches multiple code fixes and a new rest handler
for the ibmvnic driver. In order to implement the new reset handler
for the ibmvnic driver resource initialization needed to be moved to
its own routine, a state variable is introduced to replace the
various is_* flags in the driver, and a new routine to handle the
assorted reasons the driver can be reset.
v4 updates:
Patch 3/11: Corrected trailing whitespace
Patch 7/11: Corrected trailing whitespace
v3 updates:
Patch 10/11: Correct patch subject line to be a description of the patch.
v2 updates:
Patch 11/11: Use __netif_subqueue_stopped() instead of
netif_subqueue_stopped() to avoid possible use of an un-initialized
skb variable.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Restart of the subqueue should occur outside of the loop processing
any tx buffers instead of doing this in the middle of the loop.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Map each RX SKB to the RX queue associated with the driver's RX SCRQ.
This should improve the RX CPU load balancing issues seen by the
performance team.
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is not a need to stop processing skbs if we encounter a
skb that has a receive completion error.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move the check for the driver resetting to the first thing
in ibmvnic_xmit().
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When closing the ibmvnic driver we need to wait for any pending
sub crq entries to ensure they are handled.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When closing the ibmvnic driver, most notably during the reset
path, the tx pools need to be cleaned to ensure there are no
hanging skbs that need to be free'ed.
The need for this was found during debugging a loss of network
traffic after handling a driver reset. The underlying cause was
some skbs in the tx pool that were never free'ed. As a
result the upper network layers never tried a re-send since it
believed the driver still had the skb.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The napi structs allocated at drivier initializatio need to be
free'ed when releasing the drivers resources.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ibmvnic driver has multiple handlers for resetting the driver
depending on the reason the reset is needed (failover, lpm,
fatal erors,...). All of the reset handlers do essentially the same
thing, this patch moves this work to a common reset handler.
By doing this we also allow the driver to better handle situations
where we can get a reset while handling a reset.
The updated reset handling works by adding a reset work item to the
list of resets and then scheduling work to perform the reset. This
step is necessary because we can receive a reset in interrupt context
and we want to handle the reset out of interrupt context.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace the is_closed flag in the ibmvnic adapter strcut with a
more comprehensive state field that tracks the current state of
the driver.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move all of the calls to initialize resources for the driver to
a separate routine.
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter/IPVS/OVS fixes for net
The following patchset contains a rather large batch of Netfilter, IPVS
and OVS fixes for your net tree. This includes fixes for ctnetlink, the
userspace conntrack helper infrastructure, conntrack OVS support,
ebtables DNAT target, several leaks in error path among other. More
specifically, they are:
1) Fix reference count leak in the CT target error path, from Gao Feng.
2) Remove conntrack entry clashing with a matching expectation, patch
from Jarno Rajahalme.
3) Fix bogus EEXIST when registering two different userspace helpers,
from Liping Zhang.
4) Don't leak dummy elements in the new bitmap set type in nf_tables,
from Liping Zhang.
5) Get rid of module autoload from conntrack update path in ctnetlink,
we don't need autoload at this late stage and it is happening with
rcu read lock held which is not good. From Liping Zhang.
6) Fix deadlock due to double-acquire of the expect_lock from conntrack
update path, this fixes a bug that was introduced when the central
spinlock got removed. Again from Liping Zhang.
7) Safe ct->status update from ctnetlink path, from Liping. The expect_lock
protection that was selected when the central spinlock was removed was
not really protecting anything at all.
8) Protect sequence adjustment under ct->lock.
9) Missing socket match with IPv6, from Peter Tirsek.
10) Adjust skb->pkt_type of DNAT'ed frames from ebtables, from
Linus Luessing.
11) Don't give up on evaluating the expression on new entries added via
dynset expression in nf_tables, from Liping Zhang.
12) Use skb_checksum() when mangling icmpv6 in IPv6 NAT as this deals
with non-linear skbuffs.
13) Don't allow IPv6 service in IPVS if no IPv6 support is available,
from Paolo Abeni.
14) Missing mutex release in error path of xt_find_table_lock(), from
Dan Carpenter.
15) Update maintainers files, Netfilter section. Add Florian to the
file, refer to nftables.org and change project status from Supported
to Maintained.
16) Bail out on mismatching extensions in element updates in nf_tables.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Shaohua Li