mirror of https://gitee.com/openkylin/linux.git
11446 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Linus Torvalds
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db10accfd2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
"Sorry I let so much accumulate, I was in Buffalo and wanted a few
things to cook in my tree for a while before sending to you. Anyways,
it's a lot of little things as usual at this stage in the game"
1) Make bonding MAINTAINERS entry reflect reality, from Andy
Gospodarek.
2) Fix accidental sock_put() on timewait mini sockets, from Eric
Dumazet.
3) Fix crashes in l2tp due to mis-handling of ipv4 mapped ipv6
addresses, from François CACHEREUL.
4) Fix heap overflow in __audit_sockaddr(), from the eagle eyed Dan
Carpenter.
5) tcp_shifted_skb() doesn't take handle FINs properly, from Eric
Dumazet.
6) SFC driver bug fixes from Ben Hutchings.
7) Fix TX packet scheduling wedge after channel change in ath9k driver,
from Felix Fietkau.
8) Fix user after free in BPF JIT code, from Alexei Starovoitov.
9) Source address selection test is reversed in
__ip_route_output_key(), fix from Jiri Benc.
10) VLAN and CAN layer mis-size netlink attributes, from Marc
Kleine-Budde.
11) Fix permission checks in sysctls to use current_euid() instead of
current_uid(). From Eric W Biederman.
12) IPSEC policies can go away while a timer is still pending for them,
add appropriate ref-counting to fix, from Steffen Klassert.
13) Fix mis-programming of FDR and RMCR registers on R8A7740 sh_eth
chips, from Nguyen Hong Ky and Simon Horman.
14) MLX4 forgets to DMA unmap pages on RX, fix from Amir Vadai.
15) IPV6 GRE tunnel MTU upper limit is miscalculated, from Oussama
Ghorbel.
16) Fix typo in fq_change(), we were assigning "initial quantum" to
"quantum". From Eric Dumazet.
17) Set a more appropriate sk_pacing_rate for non-TCP sockets, otherwise
FQ packet scheduler does not pace those flows properly. Also from
Eric Dumazet.
18) rtlwifi miscalculates packet pointers, from Mark Cave-Ayland.
19) l2tp_xmit_skb() can be called from process context, not just softirq
context, so we must always make sure to BH disable around it. From
Eric Dumazet.
20) On qdisc reset, we forget to purge the RB tree of SKBs in netem
packet scheduler. From Stephen Hemminger.
21) Fix info leak in farsync WAN driver ioctl() handler, from Dan
Carpenter and Salva Peiró.
22) Fix PHY reset and other issues in dm9000 driver, from Nikita
Kiryanov and Michael Abbott.
23) When hardware can do SCTP crc32 checksums, we accidently don't
disable the csum offload when IPSEC transformations have been
applied. From Fan Du and Vlad Yasevich.
24) Tail loss probing in TCP leaves the socket in the wrong congestion
avoidance state. From Yuchung Cheng.
25) In CPSW driver, enable NAPI before interrupts are turned on, from
Markus Pargmann.
26) Integer underflow and dual-assignment in YAM hamradio driver, from
Dan Carpenter.
27) If we are going to mangle a packet in tcp_set_skb_tso_segs() we must
unclone it. This fixes various hard to track down crashes in
drivers where the SKBs ->gso_segs was changing right from underneath
the driver during TX queueing. From Eric Dumazet.
28) Fix the handling of VLAN IDs, and in particular the special IDs 0
and 4095, in the bridging layer. From Toshiaki Makita.
29) Another info leak, this time in wanxl WAN driver, from Salva Peiró.
30) Fix race in socket credential passing, from Daniel Borkmann.
31) WHen NETLABEL is disabled, we don't validate CIPSO packets properly,
from Seif Mazareeb.
32) Fix identification of fragmented frames in ipv4/ipv6 UDP
Fragmentation Offload output paths, from Jiri Pirko.
33) Virtual Function fixes in bnx2x driver from Yuval Mintz and Ariel
Elior.
34) When we removed the explicit neighbour pointer from ipv6 routes a
slight regression was introduced for users such as IPVS, xt_TEE, and
raw sockets. We mix up the users requested destination address with
the routes assigned nexthop/gateway. From Julian Anastasov and
Simon Horman.
35) Fix stack overruns in rt6_probe(), the issue is that can end up
doing two full packet xmit paths at the same time when emitting
neighbour discovery messages. From Hannes Frederic Sowa.
36) davinci_emac driver doesn't handle IFF_ALLMULTI correctly, from
Mariusz Ceier.
37) Make sure to set TCP sk_pacing_rate after the first legitimate RTT
sample, from Neal Cardwell.
38) Wrong netlink attribute passed to xfrm_replay_verify_len(), from
Steffen Klassert.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (152 commits)
ax88179_178a: Add VID:DID for Samsung USB Ethernet Adapter
ax88179_178a: Correct the RX error definition in RX header
Revert "bridge: only expire the mdb entry when query is received"
tcp: initialize passive-side sk_pacing_rate after 3WHS
davinci_emac.c: Fix IFF_ALLMULTI setup
mac802154: correct a typo in ieee802154_alloc_device() prototype
ipv6: probe routes asynchronous in rt6_probe
netfilter: nf_conntrack: fix rt6i_gateway checks for H.323 helper
ipv6: fill rt6i_gateway with nexthop address
ipv6: always prefer rt6i_gateway if present
bnx2x: Set NETIF_F_HIGHDMA unconditionally
bnx2x: Don't pretend during register dump
bnx2x: Lock DMAE when used by statistic flow
bnx2x: Prevent null pointer dereference on error flow
bnx2x: Fix config when SR-IOV and iSCSI are enabled
bnx2x: Fix Coalescing configuration
bnx2x: Unlock VF-PF channel on MAC/VLAN config error
bnx2x: Prevent an illegal pointer dereference during panic
bnx2x: Fix Maximum CoS estimation for VFs
drivers: net: cpsw: fix kernel warn during iperf test with interrupt pacing
...
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Ingo Molnar
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3f0116c323 |
compiler/gcc4: Add quirk for 'asm goto' miscompilation bug
Fengguang Wu, Oleg Nesterov and Peter Zijlstra tracked down a kernel crash to a GCC bug: GCC miscompiles certain 'asm goto' constructs, as outlined here: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670 Implement a workaround suggested by Jakub Jelinek. Reported-and-tested-by: Fengguang Wu <fengguang.wu@intel.com> Reported-by: Oleg Nesterov <oleg@redhat.com> Reported-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Suggested-by: Jakub Jelinek <jakub@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
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8273548c54 |
Fixes for 3.12-rc5. Two old PPC bugs and one new (3.12-rc2) x86 bug.
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Bharat Bhushan
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40fde70d0d |
kvm: ppc: booke: check range page invalidation progress on page setup
When the MM code is invalidating a range of pages, it calls the KVM kvm_mmu_notifier_invalidate_range_start() notifier function, which calls kvm_unmap_hva_range(), which arranges to flush all the TLBs for guest pages. However, the Linux PTEs for the range being flushed are still valid at that point. We are not supposed to establish any new references to pages in the range until the ...range_end() notifier gets called. The PPC-specific KVM code doesn't get any explicit notification of that; instead, we are supposed to use mmu_notifier_retry() to test whether we are or have been inside a range flush notifier pair while we have been referencing a page. This patch calls the mmu_notifier_retry() while mapping the guest page to ensure we are not referencing a page when in range invalidation. This call is inside a region locked with kvm->mmu_lock, which is the same lock that is called by the KVM MMU notifier functions, thus ensuring that no new notification can proceed while we are in the locked region. Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> Acked-by: Alexander Graf <agraf@suse.de> [Backported to 3.12 - Paolo] Reviewed-by: Bharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Paul Mackerras
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cfc860253a |
KVM: PPC: Book3S HV: Fix typo in saving DSCR
This fixes a typo in the code that saves the guest DSCR (Data Stream Control Register) into the kvm_vcpu_arch struct on guest exit. The effect of the typo was that the DSCR value was saved in the wrong place, so changes to the DSCR by the guest didn't persist across guest exit and entry, and some host kernel memory got corrupted. Cc: stable@vger.kernel.org [v3.1+] Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Benjamin Herrenschmidt
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8b5ede69d2 |
powerpc/irq: Don't switch to irq stack from softirq stack
irq_exit() is now called on the irq stack, which can trigger a switch to the softirq stack from the irq stack. If an interrupt happens at that point, we will not properly detect the re-entrancy and clobber the original return context on the irq stack. This fixes it. The side effect is to prevent all nesting from softirq stack to irq stack even in the "safe" case but it's simpler that way and matches what x86_64 does. Reported-by: Cédric Le Goater <clg@fr.ibm.com> Tested-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Alexei Starovoitov
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d45ed4a4e3 |
net: fix unsafe set_memory_rw from softirq
on x86 system with net.core.bpf_jit_enable = 1 sudo tcpdump -i eth1 'tcp port 22' causes the warning: [ 56.766097] Possible unsafe locking scenario: [ 56.766097] [ 56.780146] CPU0 [ 56.786807] ---- [ 56.793188] lock(&(&vb->lock)->rlock); [ 56.799593] <Interrupt> [ 56.805889] lock(&(&vb->lock)->rlock); [ 56.812266] [ 56.812266] *** DEADLOCK *** [ 56.812266] [ 56.830670] 1 lock held by ksoftirqd/1/13: [ 56.836838] #0: (rcu_read_lock){.+.+..}, at: [<ffffffff8118f44c>] vm_unmap_aliases+0x8c/0x380 [ 56.849757] [ 56.849757] stack backtrace: [ 56.862194] CPU: 1 PID: 13 Comm: ksoftirqd/1 Not tainted 3.12.0-rc3+ #45 [ 56.868721] Hardware name: System manufacturer System Product Name/P8Z77 WS, BIOS 3007 07/26/2012 [ 56.882004] ffffffff821944c0 ffff88080bbdb8c8 ffffffff8175a145 0000000000000007 [ 56.895630] ffff88080bbd5f40 ffff88080bbdb928 ffffffff81755b14 0000000000000001 [ 56.909313] ffff880800000001 ffff880800000000 ffffffff8101178f 0000000000000001 [ 56.923006] Call Trace: [ 56.929532] [<ffffffff8175a145>] dump_stack+0x55/0x76 [ 56.936067] [<ffffffff81755b14>] print_usage_bug+0x1f7/0x208 [ 56.942445] [<ffffffff8101178f>] ? save_stack_trace+0x2f/0x50 [ 56.948932] [<ffffffff810cc0a0>] ? check_usage_backwards+0x150/0x150 [ 56.955470] [<ffffffff810ccb52>] mark_lock+0x282/0x2c0 [ 56.961945] [<ffffffff810ccfed>] __lock_acquire+0x45d/0x1d50 [ 56.968474] [<ffffffff810cce6e>] ? __lock_acquire+0x2de/0x1d50 [ 56.975140] [<ffffffff81393bf5>] ? cpumask_next_and+0x55/0x90 [ 56.981942] [<ffffffff810cef72>] lock_acquire+0x92/0x1d0 [ 56.988745] [<ffffffff8118f52a>] ? vm_unmap_aliases+0x16a/0x380 [ 56.995619] [<ffffffff817628f1>] _raw_spin_lock+0x41/0x50 [ 57.002493] [<ffffffff8118f52a>] ? vm_unmap_aliases+0x16a/0x380 [ 57.009447] [<ffffffff8118f52a>] vm_unmap_aliases+0x16a/0x380 [ 57.016477] [<ffffffff8118f44c>] ? vm_unmap_aliases+0x8c/0x380 [ 57.023607] [<ffffffff810436b0>] change_page_attr_set_clr+0xc0/0x460 [ 57.030818] [<ffffffff810cfb8d>] ? trace_hardirqs_on+0xd/0x10 [ 57.037896] [<ffffffff811a8330>] ? kmem_cache_free+0xb0/0x2b0 [ 57.044789] [<ffffffff811b59c3>] ? free_object_rcu+0x93/0xa0 [ 57.051720] [<ffffffff81043d9f>] set_memory_rw+0x2f/0x40 [ 57.058727] [<ffffffff8104e17c>] bpf_jit_free+0x2c/0x40 [ 57.065577] [<ffffffff81642cba>] sk_filter_release_rcu+0x1a/0x30 [ 57.072338] [<ffffffff811108e2>] rcu_process_callbacks+0x202/0x7c0 [ 57.078962] [<ffffffff81057f17>] __do_softirq+0xf7/0x3f0 [ 57.085373] [<ffffffff81058245>] run_ksoftirqd+0x35/0x70 cannot reuse jited filter memory, since it's readonly, so use original bpf insns memory to hold work_struct defer kfree of sk_filter until jit completed freeing tested on x86_64 and i386 Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Michael Neuling
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e9bdc3d614 |
powerpc/tm: Switch out userspace PPR and DSCR sooner
When we do a treclaim or trecheckpoint we end up running with userspace PPR and DSCR values. Currently we don't do anything special to avoid running with user values which could cause a severe performance degradation. This patch moves the PPR and DSCR save and restore around treclaim and trecheckpoint so that we run with user values for a much shorter period. More care is taken with the PPR as it's impact is greater than the DSCR. This is similar to user exceptions, where we run HTM_MEDIUM early to ensure that we don't run with a userspace PPR values in the kernel. Signed-off-by: Michael Neuling <mikey@neuling.org> Cc: <stable@vger.kernel.org> # 3.9+ Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Michael Neuling
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c69e63b0f1 |
powerpc/tm: Turn interrupts hard off in tm_reclaim()
We can't take IRQs in tm_reclaim as we might have a bogus r13 and r1. This turns IRQs hard off in this function. Signed-off-by: Michael Neuling <mikey@neuling.org> Cc: <stable@vger.kernel.org> # 3.9+ Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Michael Ellerman
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a53b27b3ab |
powerpc/perf: Fix handling of FAB events
Commit
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Prarit Bhargava
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e82b89a6f1 |
powerpc/vio: Fix modalias_show return values
modalias_show() should return an empty string on error, not -ENODEV. This causes the following false and annoying error: > find /sys/devices -name modalias -print0 | xargs -0 cat >/dev/null cat: /sys/devices/vio/4000/modalias: No such device cat: /sys/devices/vio/4001/modalias: No such device cat: /sys/devices/vio/4002/modalias: No such device cat: /sys/devices/vio/4004/modalias: No such device cat: /sys/devices/vio/modalias: No such device Signed-off-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org> |
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Nishanth Aravamudan
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1cf389df09 |
powerpc/iommu: Use GFP_KERNEL instead of GFP_ATOMIC in iommu_init_table()
Under heavy (DLPAR?) stress, we tripped this panic() in
arch/powerpc/kernel/iommu.c::iommu_init_table():
page = alloc_pages_node(nid, GFP_ATOMIC, get_order(sz));
if (!page)
panic("iommu_init_table: Can't allocate %ld bytes\n", sz);
Before the panic() we got a page allocation failure for an order-2
allocation. There appears to be memory free, but perhaps not in the
ATOMIC context. I looked through all the call-sites of
iommu_init_table() and didn't see any obvious reason to need an ATOMIC
allocation. Most call-sites in fact have an explicit GFP_KERNEL
allocation shortly before the call to iommu_init_table(), indicating we
are not in an atomic context. There is some indirection for some paths,
but I didn't see any locks indicating that GFP_KERNEL is inappropriate.
With this change under the same conditions, we have not been able to
reproduce the panic.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
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Madhavan Srinivasan
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d1211af304 |
powerpc/sysfs: Disable writing to PURR in guest mode
arch/powerpc/kernel/sysfs.c exports PURR with write permission. This may be valid for kernel in phyp mode. But writing to the file in guest mode causes crash due to a priviledge violation Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org> |
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Paul E. McKenney
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8f21bd0090 |
powerpc: Restore registers on error exit from csum_partial_copy_generic()
The csum_partial_copy_generic() function saves the PowerPC non-volatile r14, r15, and r16 registers for the main checksum-and-copy loop. Unfortunately, it fails to restore them upon error exit from this loop, which results in silent corruption of these registers in the presumably rare event of an access exception within that loop. This commit therefore restores these register on error exit from the loop. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Anton Blanchard <anton@samba.org> Cc: stable@vger.kernel.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Paul E. McKenney
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d9813c3681 |
powerpc: Fix parameter clobber in csum_partial_copy_generic()
The csum_partial_copy_generic() uses register r7 to adjust the remaining bytes to process. Unfortunately, r7 also holds a parameter, namely the address of the flag to set in case of access exceptions while reading the source buffer. Lacking a quantum implementation of PowerPC, this commit instead uses register r9 to do the adjusting, leaving r7's pointer uncorrupted. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Anton Blanchard <anton@samba.org> Cc: stable@vger.kernel.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Nathan Fontenot
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f7e3334a6b |
powerpc: Fix memory hotplug with sparse vmemmap
Previous commit 46723bfa540... introduced a new config option HAVE_BOOTMEM_INFO_NODE that ended up breaking memory hot-remove for ppc when sparse vmemmap is not defined. This patch defines HAVE_BOOTMEM_INFO_NODE for ppc and adds the call to register_page_bootmem_info_node. Without this we get a BUG_ON for memory hot remove in put_page_bootmem(). This also adds a stub for register_page_bootmem_memmap to allow ppc to build with sparse vmemmap defined. Leaving this as a stub is fine since the same vmemmap addresses are also handled in vmemmap_populate and as such are properly mapped. Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org> [v3.9+] |
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Benjamin Herrenschmidt
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dbe78b4011 |
powerpc/pseries: Do not start secondaries in Open Firmware
Starting secondary CPUs early on from Open Firmware and placing them in a holding spin loop slows down the boot process significantly under some hypervisors such as KVM. This is also unnecessary when RTAS supports querying the CPU state So let's not do it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Benjamin Herrenschmidt
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0c9fa29149 |
powerpc/zImage: make the "OF" wrapper support ePAPR boot
This makes the "OF" zImage wrapper (zImage.pseries, zImage.pmac, zImage.maple) work if booted via a flat device-tree (ePAPR boot mode), and thus potentially usable with kexec. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Benjamin Herrenschmidt
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cbc9565ee8 |
powerpc: Remove ksp_limit on ppc64
We've been keeping that field in thread_struct for a while, it contains the "limit" of the current stack pointer and is meant to be used for detecting stack overflows. It has a few problems however: - First, it was never actually *used* on 64-bit. Set and updated but not actually exploited - When switching stack to/from irq and softirq stacks, it's update is racy unless we hard disable interrupts, which is costly. This is fine on 32-bit as we don't soft-disable there but not on 64-bit. Thus rather than fixing 2 in order to implement 1 in some hypothetical future, let's remove the code completely from 64-bit. In order to avoid a clutter of ifdef's, we remove the updates from C code completely during interrupt stack switching, and instead maintain it from the asm helper that is used to do the stack switching in the first place. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Benjamin Herrenschmidt
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0366a1c70b |
powerpc/irq: Run softirqs off the top of the irq stack
Nowadays, irq_exit() calls __do_softirq() pretty much directly instead of calling do_softirq() which switches to the decicated softirq stack. This has lead to observed stack overflows on powerpc since we call irq_enter() and irq_exit() outside of the scope that switches to the irq stack. This fixes it by moving the stack switching up a level, making irq_enter() and irq_exit() run off the irq stack. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Martin Schwidefsky
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0244ad004a |
Remove GENERIC_HARDIRQ config option
After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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Linus Torvalds
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ac4de9543a |
Merge branch 'akpm' (patches from Andrew Morton)
Merge more patches from Andrew Morton: "The rest of MM. Plus one misc cleanup" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (35 commits) mm/Kconfig: add MMU dependency for MIGRATION. kernel: replace strict_strto*() with kstrto*() mm, thp: count thp_fault_fallback anytime thp fault fails thp: consolidate code between handle_mm_fault() and do_huge_pmd_anonymous_page() thp: do_huge_pmd_anonymous_page() cleanup thp: move maybe_pmd_mkwrite() out of mk_huge_pmd() mm: cleanup add_to_page_cache_locked() thp: account anon transparent huge pages into NR_ANON_PAGES truncate: drop 'oldsize' truncate_pagecache() parameter mm: make lru_add_drain_all() selective memcg: document cgroup dirty/writeback memory statistics memcg: add per cgroup writeback pages accounting memcg: check for proper lock held in mem_cgroup_update_page_stat memcg: remove MEMCG_NR_FILE_MAPPED memcg: reduce function dereference memcg: avoid overflow caused by PAGE_ALIGN memcg: rename RESOURCE_MAX to RES_COUNTER_MAX memcg: correct RESOURCE_MAX to ULLONG_MAX mm: memcg: do not trap chargers with full callstack on OOM mm: memcg: rework and document OOM waiting and wakeup ... |
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Johannes Weiner
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759496ba64 |
arch: mm: pass userspace fault flag to generic fault handler
Unlike global OOM handling, memory cgroup code will invoke the OOM killer in any OOM situation because it has no way of telling faults occuring in kernel context - which could be handled more gracefully - from user-triggered faults. Pass a flag that identifies faults originating in user space from the architecture-specific fault handlers to generic code so that memcg OOM handling can be improved. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Michal Hocko <mhocko@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: azurIt <azurit@pobox.sk> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
e5d0c87439 |
IOMMU Updates for Linux v3.12
This round the updates contain:
* A new driver for the Freescale PAMU IOMMU from Varun Sethi.
This driver has cooked for a while and required changes to the
IOMMU-API and infrastructure that were already merged before.
* Updates for the ARM-SMMU driver from Will Deacon
* Various fixes, the most important one is probably a fix from
Alex Williamson for a memory leak in the VT-d page-table
freeing code
In summary not all that much. The biggest part in the diffstat is the
new PAMU driver.
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Merge tag 'iommu-updates-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU Updates from Joerg Roedel:
"This round the updates contain:
- A new driver for the Freescale PAMU IOMMU from Varun Sethi.
This driver has cooked for a while and required changes to the
IOMMU-API and infrastructure that were already merged before.
- Updates for the ARM-SMMU driver from Will Deacon
- Various fixes, the most important one is probably a fix from Alex
Williamson for a memory leak in the VT-d page-table freeing code
In summary not all that much. The biggest part in the diffstat is the
new PAMU driver"
* tag 'iommu-updates-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
intel-iommu: Fix leaks in pagetable freeing
iommu/amd: Fix resource leak in iommu_init_device()
iommu/amd: Clean up unnecessary MSI/MSI-X capability find
iommu/arm-smmu: Simplify VMID and ASID allocation
iommu/arm-smmu: Don't use VMIDs for stage-1 translations
iommu/arm-smmu: Tighten up global fault reporting
iommu/arm-smmu: Remove broken big-endian check
iommu/fsl: Remove unnecessary 'fsl-pamu' prefixes
iommu/fsl: Fix whitespace problems noticed by git-am
iommu/fsl: Freescale PAMU driver and iommu implementation.
iommu/fsl: Add additional iommu attributes required by the PAMU driver.
powerpc: Add iommu domain pointer to device archdata
iommu/exynos: Remove dead code (set_prefbuf)
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Joerg Roedel
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d6a60fc1a8 | Merge branches 'arm/exynos', 'ppc/pamu', 'arm/smmu', 'x86/amd' and 'iommu/fixes' into next | |
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Naoya Horiguchi
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83467efbdb |
mm: migrate: check movability of hugepage in unmap_and_move_huge_page()
Currently hugepage migration works well only for pmd-based hugepages (mainly due to lack of testing,) so we had better not enable migration of other levels of hugepages until we are ready for it. Some users of hugepage migration (mbind, move_pages, and migrate_pages) do page table walk and check pud/pmd_huge() there, so they are safe. But the other users (softoffline and memory hotremove) don't do this, so without this patch they can try to migrate unexpected types of hugepages. To prevent this, we introduce hugepage_migration_support() as an architecture dependent check of whether hugepage are implemented on a pmd basis or not. And on some architecture multiple sizes of hugepages are available, so hugepage_migration_support() also checks hugepage size. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Hillf Danton <dhillf@gmail.com> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Rik van Riel <riel@redhat.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Vaidyanathan Srinivasan
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363edbe261 |
powerpc: Default arch idle could cede processor on pseries
When adding cpuidle support to pSeries, we introduced two
regressions:
- The new cpuidle backend driver only works under hypervisors
supporting the "SLPLAR" option, which isn't the case of the
old POWER4 hypervisor and the HV "light" used on js2x blades
- The cpuidle driver registers fairly late, meaning that for
a significant portion of the boot process, we end up having
all threads spinning. This slows down the boot process and
increases the overall resource usage if the hypervisor has
shared processors.
This fixes both by implementing a "default" idle that will cede
to the hypervisor when possible, in a very simple way without
all the bells and whisles of cpuidle.
Reported-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Acked-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
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Vladimir Murzin
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620e505082 |
powerpc: Fix section mismatch warning for prom_rtas_call
While cross-building for PPC64 I've got WARNING: vmlinux.o(.text.unlikely+0x1ba): Section mismatch in reference from the function .prom_rtas_call() to the variable .init.data:dt_string_start The function .prom_rtas_call() references the variable __initdata dt_string_start. This is often because .prom_rtas_call lacks a __initdata annotation or the annotation of dt_string_start is wrong. WARNING: vmlinux.o(.meminit.text+0xeb0): Section mismatch in reference from the function .free_area_init_core.isra.47() to the function .init.text:.set_pageblock_order() The function __meminit .free_area_init_core.isra.47() references a function __init .set_pageblock_order(). If .set_pageblock_order is only used by .free_area_init_core.isra.47 then annotate .set_pageblock_order with a matching annotation. Fix it by proper annotation of prom_rtas_call. Signed-off-by: Vladimir Murzin <murzin.v@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
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Aneesh Kumar K.V
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69e044dd75 |
powerpc: Fix possible deadlock on page fault
stack_grow_into/14082 is trying to acquire lock:
(&mm->mmap_sem){++++++}, at: [<c000000000206d28>] .might_fault+0x78/0xe0
but task is already holding lock:
(&mm->mmap_sem){++++++}, at: [<c0000000007ffd8c>] .do_page_fault+0x24c/0x910
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&mm->mmap_sem);
lock(&mm->mmap_sem);
*** DEADLOCK ***
May be due to missing lock nesting notation
1 lock held by stack_grow_into/14082:
#0: (&mm->mmap_sem){++++++}, at: [<c0000000007ffd8c>] .do_page_fault+0x24c/0x910
stack backtrace:
CPU: 21 PID: 14082 Comm: stack_grow_into Not tainted 3.10.0-10.el7.ppc64.debug #1
Call Trace:
[c0000003d396b850] [c000000000016e7c] .show_stack+0x7c/0x1f0 (unreliable)
[c0000003d396b920] [c000000000813fc8] .dump_stack+0x28/0x3c
[c0000003d396b990] [c000000000124b90] .__lock_acquire+0x1640/0x1800
[c0000003d396bab0] [c00000000012570c] .lock_acquire+0xac/0x250
[c0000003d396bb80] [c000000000206d54] .might_fault+0xa4/0xe0
[c0000003d396bbf0] [c0000000007ffe2c] .do_page_fault+0x2ec/0x910
[c0000003d396be30] [c0000000000092e8] handle_page_fault+0x10/0x30
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Guenter Roeck
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256588fda1 |
powerpc: Export cpu_to_chip_id() to fix build error
powerpc allmodconfig build fails with:
ERROR: ".cpu_to_chip_id" [drivers/block/mtip32xx/mtip32xx.ko] undefined!
The problem was introduced with commit
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Linus Torvalds
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31f7c3a688 |
Device tree core updates for v3.12
Generally minor changes. A bunch of bug fixes, particularly for
initialization and some refactoring. Most notable change if feeding the
entire flattened tree into the random pool at boot. May not be
significant, but shouldn't hurt either.
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Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux
Pull device tree core updates from Grant Likely:
"Generally minor changes. A bunch of bug fixes, particularly for
initialization and some refactoring. Most notable change if feeding
the entire flattened tree into the random pool at boot. May not be
significant, but shouldn't hurt either"
Tim Bird questions whether the boot time cost of the random feeding may
be noticeable. And "add_device_randomness()" is definitely not some
speed deamon of a function.
* tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux:
of/platform: add error reporting to of_amba_device_create()
irq/of: Fix comment typo for irq_of_parse_and_map
of: Feed entire flattened device tree into the random pool
of/fdt: Clean up casting in unflattening path
of/fdt: Remove duplicate memory clearing on FDT unflattening
gpio: implement gpio-ranges binding document fix
of: call __of_parse_phandle_with_args from of_parse_phandle
of: introduce of_parse_phandle_with_fixed_args
of: move of_parse_phandle()
of: move documentation of of_parse_phandle_with_args
of: Fix missing memory initialization on FDT unflattening
of: consolidate definition of early_init_dt_alloc_memory_arch()
of: Make of_get_phy_mode() return int i.s.o. const int
include: dt-binding: input: create a DT header defining key codes.
of/platform: Staticize of_platform_device_create_pdata()
of: Specify initrd location using 64-bit
dt: Typo fix
OF: make of_property_for_each_{u32|string}() use parameters if OF is not enabled
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Linus Torvalds
|
300893b08f |
xfs: update for v3.12-rc1
For 3.12-rc1 there are a number of bugfixes in addition to work to ease usage of shared code between libxfs and the kernel, the rest of the work to enable project and group quotas to be used simultaneously, performance optimisations in the log and the CIL, directory entry file type support, fixes for log space reservations, some spelling/grammar cleanups, and the addition of user namespace support. - introduce readahead to log recovery - add directory entry file type support - fix a number of spelling errors in comments - introduce new Q_XGETQSTATV quotactl for project quotas - add USER_NS support - log space reservation rework - CIL optimisations - kernel/userspace libxfs rework -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQIcBAABAgAGBQJSLeikAAoJENaLyazVq6ZOciEP/3tc850sQsPlNwP9aqd1l2Wk S1RJ8i+MUQ2W/PlbswCXvdUCT8DIwXWxL31tGvi8vtaLhh6t8ICSZwqNil+/GCIJ BErVvY4oXhEMHhlbIRRvpxblTfJGiYy3puUEz9VI0yDdUVnC33+DuEeLTQ/0mibo /UUqKFmM3KYpOc8vIQvH5K5i8PkjtMt9yge0k4l9COD30gtY2okkaD4b1voOsKc+ 5YFqulq7zcXBUYti+EFCQeV8aUBTGEPN4PJRdcS12/ylzsTzZivAOO+QREu7qBW8 x+Gj8fOC+yYWCttmJlfa1n8taxge3ndEuzKN97nvvfQgjvvunMvwJ499skryYVdB EcPnBnpDUQuz/y7exKBT9uROK817vZBtfHzSova29ayQSWC+qDpNE4xXeDIqeCtT CPxdHuWMOvIdZg41E4x7je0elaZl8EAZ8hycc2WuRhtukEkIdE1O8aD7IVrMYee8 kg+aVHG5nmYRInO1WuMinbtiCzwvVoBJToWM3y4cbfgW0dILASRyL53HDd+eCr1j kOpPIVgXlBZgiPMmdYahWxyVVWcE7zyex0w4frzWVlJMZ4lP5brppD6qfQg1JwOB z21Y95F5C2GxSyN/Lwps0G6jujHrpe6GVeYK7uKCtnqTD83nSShv5Naln7pQ3AUs qUMsqmJob4+bwt94Xgbx =V4s4 -----END PGP SIGNATURE----- Merge tag 'xfs-for-linus-v3.12-rc1' of git://oss.sgi.com/xfs/xfs Pull xfs updates from Ben Myers: "For 3.12-rc1 there are a number of bugfixes in addition to work to ease usage of shared code between libxfs and the kernel, the rest of the work to enable project and group quotas to be used simultaneously, performance optimisations in the log and the CIL, directory entry file type support, fixes for log space reservations, some spelling/grammar cleanups, and the addition of user namespace support. - introduce readahead to log recovery - add directory entry file type support - fix a number of spelling errors in comments - introduce new Q_XGETQSTATV quotactl for project quotas - add USER_NS support - log space reservation rework - CIL optimisations - kernel/userspace libxfs rework" * tag 'xfs-for-linus-v3.12-rc1' of git://oss.sgi.com/xfs/xfs: (112 commits) xfs: XFS_MOUNT_QUOTA_ALL needed by userspace xfs: dtype changed xfs_dir2_sfe_put_ino to xfs_dir3_sfe_put_ino Fix wrong flag ASSERT in xfs_attr_shortform_getvalue xfs: finish removing IOP_* macros. xfs: inode log reservations are too small xfs: check correct status variable for xfs_inobt_get_rec() call xfs: inode buffers may not be valid during recovery readahead xfs: check LSN ordering for v5 superblocks during recovery xfs: btree block LSN escaping to disk uninitialised XFS: Assertion failed: first <= last && last < BBTOB(bp->b_length), file: fs/xfs/xfs_trans_buf.c, line: 568 xfs: fix bad dquot buffer size in log recovery readahead xfs: don't account buffer cancellation during log recovery readahead xfs: check for underflow in xfs_iformat_fork() xfs: xfs_dir3_sfe_put_ino can be static xfs: introduce object readahead to log recovery xfs: Simplify xfs_ail_min() with list_first_entry_or_null() xfs: Register hotcpu notifier after initialization xfs: add xfs sb v4 support for dirent filetype field xfs: Add write support for dirent filetype field xfs: Add read-only support for dirent filetype field ... |
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Linus Torvalds
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b4b50fd78b |
ARM: SoC platform changes for 3.12
This branch contains mostly additions and changes to platform enablement
and SoC-level drivers. Since there's sometimes a dependency on device-tree
changes, there's also a fair amount of those in this branch.
Pieces worth mentioning are:
- Mbus driver for Marvell platforms, allowing kernel configuration
and resource allocation of on-chip peripherals.
- Enablement of the mbus infrastructure from Marvell PCI-e drivers.
- Preparation of MSI support for Marvell platforms.
- Addition of new PCI-e host controller driver for Tegra platforms
- Some churn caused by sharing of macro names between i.MX 6Q and 6DL
platforms in the device tree sources and header files.
- Various suspend/PM updates for Tegra, including LP1 support.
- Versatile Express support for MCPM, part of big little support.
- Allwinner platform support for A20 and A31 SoCs (dual and quad Cortex-A7)
- OMAP2+ support for DRA7, a new Cortex-A15-based SoC.
The code that touches other architectures are patches moving
MSI arch-specific functions over to weak symbols and removal of
ARCH_SUPPORTS_MSI, acked by PCI maintainers.
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Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform changes from Olof Johansson:
"This branch contains mostly additions and changes to platform
enablement and SoC-level drivers. Since there's sometimes a
dependency on device-tree changes, there's also a fair amount of
those in this branch.
Pieces worth mentioning are:
- Mbus driver for Marvell platforms, allowing kernel configuration
and resource allocation of on-chip peripherals.
- Enablement of the mbus infrastructure from Marvell PCI-e drivers.
- Preparation of MSI support for Marvell platforms.
- Addition of new PCI-e host controller driver for Tegra platforms
- Some churn caused by sharing of macro names between i.MX 6Q and 6DL
platforms in the device tree sources and header files.
- Various suspend/PM updates for Tegra, including LP1 support.
- Versatile Express support for MCPM, part of big little support.
- Allwinner platform support for A20 and A31 SoCs (dual and quad
Cortex-A7)
- OMAP2+ support for DRA7, a new Cortex-A15-based SoC.
The code that touches other architectures are patches moving MSI
arch-specific functions over to weak symbols and removal of
ARCH_SUPPORTS_MSI, acked by PCI maintainers"
* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (266 commits)
tegra-cpuidle: provide stub when !CONFIG_CPU_IDLE
PCI: tegra: replace devm_request_and_ioremap by devm_ioremap_resource
ARM: tegra: Drop ARCH_SUPPORTS_MSI and sort list
ARM: dts: vf610-twr: enable i2c0 device
ARM: dts: i.MX51: Add one more I2C2 pinmux entry
ARM: dts: i.MX51: Move pins configuration under "iomuxc" label
ARM: dtsi: imx6qdl-sabresd: Add USB OTG vbus pin to pinctrl_hog
ARM: dtsi: imx6qdl-sabresd: Add USB host 1 VBUS regulator
ARM: dts: imx27-phytec-phycore-som: Enable AUDMUX
ARM: dts: i.MX27: Disable AUDMUX in the template
ARM: dts: wandboard: Add support for SDIO bcm4329
ARM: i.MX5 clocks: Remove optional clock setup (CKIH1) from i.MX51 template
ARM: dts: imx53-qsb: Make USBH1 functional
ARM i.MX6Q: dts: Enable I2C1 with EEPROM and PMIC on Phytec phyFLEX-i.MX6 Ouad module
ARM i.MX6Q: dts: Enable SPI NOR flash on Phytec phyFLEX-i.MX6 Ouad module
ARM: dts: imx6qdl-sabresd: Add touchscreen support
ARM: imx: add ocram clock for imx53
ARM: dts: imx: ocram size is different between imx6q and imx6dl
ARM: dts: imx27-phytec-phycore-som: Fix regulator settings
ARM: dts: i.MX27: Remove clock name from CPU node
...
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Linus Torvalds
|
39eda2aba6 |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Ben Herrenschmidt:
"Here's the powerpc batch for this merge window. Some of the
highlights are:
- A bunch of endian fixes ! We don't have full LE support yet in that
release but this contains a lot of fixes all over arch/powerpc to
use the proper accessors, call the firmware with the right endian
mode, etc...
- A few updates to our "powernv" platform (non-virtualized, the one
to run KVM on), among other, support for bridging the P8 LPC bus
for UARTs, support and some EEH fixes.
- Some mpc51xx clock API cleanups in preparation for a clock API
overhaul
- A pile of cleanups of our old math emulation code, including better
support for using it to emulate optional FP instructions on
embedded chips that otherwise have a HW FPU.
- Some infrastructure in selftest, for powerpc now, but could be
generalized, initially used by some tests for our perf instruction
counting code.
- A pile of fixes for hotplug on pseries (that was seriously
bitrotting)
- The usual slew of freescale embedded updates, new boards, 64-bit
hiberation support, e6500 core PMU support, etc..."
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (146 commits)
powerpc: Correct FSCR bit definitions
powerpc/xmon: Fix printing of set of CPUs in xmon
powerpc/pseries: Move lparcfg.c to platforms/pseries
powerpc/powernv: Return secondary CPUs to firmware on kexec
powerpc/btext: Fix CONFIG_PPC_EARLY_DEBUG_BOOTX on ppc32
powerpc: Cleanup handling of the DSCR bit in the FSCR register
powerpc/pseries: Child nodes are not detached by dlpar_detach_node
powerpc/pseries: Add mising of_node_put in delete_dt_node
powerpc/pseries: Make dlpar_configure_connector parent node aware
powerpc/pseries: Do all node initialization in dlpar_parse_cc_node
powerpc/pseries: Fix parsing of initial node path in update_dt_node
powerpc/pseries: Pack update_props_workarea to map correctly to rtas buffer header
powerpc/pseries: Fix over writing of rtas return code in update_dt_node
powerpc/pseries: Fix creation of loop in device node property list
powerpc: Skip emulating & leave interrupts off for kernel program checks
powerpc: Add more exception trampolines for hypervisor exceptions
powerpc: Fix location and rename exception trampolines
powerpc: Add more trap names to xmon
powerpc/pseries: Add a warning in the case of cross-cpu VPA registration
powerpc: Update the 00-Index in Documentation/powerpc
...
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Linus Torvalds
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2e515bf096 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree from Jiri Kosina: "The usual trivial updates all over the tree -- mostly typo fixes and documentation updates" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (52 commits) doc: Documentation/cputopology.txt fix typo treewide: Convert retrun typos to return Fix comment typo for init_cma_reserved_pageblock Documentation/trace: Correcting and extending tracepoint documentation mm/hotplug: fix a typo in Documentation/memory-hotplug.txt power: Documentation: Update s2ram link doc: fix a typo in Documentation/00-INDEX Documentation/printk-formats.txt: No casts needed for u64/s64 doc: Fix typo "is is" in Documentations treewide: Fix printks with 0x%# zram: doc fixes Documentation/kmemcheck: update kmemcheck documentation doc: documentation/hwspinlock.txt fix typo PM / Hibernate: add section for resume options doc: filesystems : Fix typo in Documentations/filesystems scsi/megaraid fixed several typos in comments ppc: init_32: Fix error typo "CONFIG_START_KERNEL" treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacks page_isolation: Fix a comment typo in test_pages_isolated() doc: fix a typo about irq affinity ... |
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Linus Torvalds
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00341b5301 |
Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"Highlights:
- OF and ACPI helpers are now included in the core, and not in
external files anymore. This removes dependency problems for
modules and is cleaner, in general.
- mv64xxx-driver gains fifo usage to support mv78230
- imx-driver overhaul to support VF610
- various cleanups, most notably related to devm_* and CONFIG_PM
usage
- driver bugfixes and smaller feature additions"
* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (51 commits)
i2c: rcar: add rcar-H2 support
i2c: sirf: retry 3 times as sometimes we get random noack and timeout
i2c: sirf: support reverse direction of address
i2c: sirf: fix the typo for setting bitrate to less than 100k
i2c: sirf: we need to wait I2C_RESET status in resume
i2c: sirf: reset i2c controller early after we get a noack
i2c: designware: get SDA hold time, HCNT and LCNT configuration from ACPI
i2c: designware: make HCNT/LCNT values configurable
i2c: mpc: cleanup clock API use
i2c: pnx: fix error return code in i2c_pnx_probe()
i2c: ismt: add error return code in probe()
i2c: mv64xxx: fix typo in binding documentation
i2c: imx: use exact SoC revision to document binding
i2c: move ACPI helpers into the core
i2c: move OF helpers into the core
i2c: mv64xxx: Fix timing issue on Armada XP (errata FE-8471889)
i2c: mv64xxx: Add I2C Transaction Generator support
i2c: powermac: fix return path on error
Documentation: i2c: Fix example in instantiating-devices
i2c: tiny-usb: do not use stack as URB transfer_buffer
...
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Linus Torvalds
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45d9a2220f |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pile 1 from Al Viro:
"Unfortunately, this merge window it'll have a be a lot of small piles -
my fault, actually, for not keeping #for-next in anything that would
resemble a sane shape ;-/
This pile: assorted fixes (the first 3 are -stable fodder, IMO) and
cleanups + %pd/%pD formats (dentry/file pathname, up to 4 last
components) + several long-standing patches from various folks.
There definitely will be a lot more (starting with Miklos'
check_submount_and_drop() series)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (26 commits)
direct-io: Handle O_(D)SYNC AIO
direct-io: Implement generic deferred AIO completions
add formats for dentry/file pathnames
kvm eventfd: switch to fdget
powerpc kvm: use fdget
switch fchmod() to fdget
switch epoll_ctl() to fdget
switch copy_module_from_fd() to fdget
git simplify nilfs check for busy subtree
ibmasmfs: don't bother passing superblock when not needed
don't pass superblock to hypfs_{mkdir,create*}
don't pass superblock to hypfs_diag_create_files
don't pass superblock to hypfs_vm_create_files()
oprofile: get rid of pointless forward declarations of struct super_block
oprofilefs_create_...() do not need superblock argument
oprofilefs_mkdir() doesn't need superblock argument
don't bother with passing superblock to oprofile_create_stats_files()
oprofile: don't bother with passing superblock to ->create_files()
don't bother passing sb to oprofile_create_files()
coh901318: don't open-code simple_read_from_buffer()
...
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Paul Mackerras
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9f24b0c9ef |
powerpc: Correct FSCR bit definitions
Commit
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Paul Mackerras
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fd3bb91287 |
powerpc/xmon: Fix printing of set of CPUs in xmon
Commit 24ec2125f3 ("powerpc/xmon: Use cpumask iterator to avoid warning")
replaced a loop from 0 to NR_CPUS-1 with a for_each_possible_cpu() loop,
which means that if the last possible cpu is in xmon, we print the
wrong value for the end of the range. For example, if 4 cpus are
possible, NR_CPUS is 128, and all cpus are in xmon, we print "0-7f"
rather than "0-3". The code also assumes that the set of possible
cpus is contiguous, which may not necessarily be true.
This fixes the code to check explicitly for contiguity, and to print
the ending value correctly.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Benjamin Herrenschmidt
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91c2beb56b |
Merge remote-tracking branch 'agust/next' into next
From Anatolij: << There are cleanups for some mpc5121 specific drivers and DTS files in preparation to switch mpc5121 clock support to a clock driver based on common clock framework. Additionally Sebastian fixed the mpc52xx PIC driver so that it builds when using older gcc versions. >> |
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Linus Torvalds
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ae7a835cc5 |
Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Gleb Natapov: "The highlights of the release are nested EPT and pv-ticketlocks support (hypervisor part, guest part, which is most of the code, goes through tip tree). Apart of that there are many fixes for all arches" Fix up semantic conflicts as discussed in the pull request thread.. * 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (88 commits) ARM: KVM: Add newlines to panic strings ARM: KVM: Work around older compiler bug ARM: KVM: Simplify tracepoint text ARM: KVM: Fix kvm_set_pte assignment ARM: KVM: vgic: Bump VGIC_NR_IRQS to 256 ARM: KVM: Bugfix: vgic_bytemap_get_reg per cpu regs ARM: KVM: vgic: fix GICD_ICFGRn access ARM: KVM: vgic: simplify vgic_get_target_reg KVM: MMU: remove unused parameter KVM: PPC: Book3S PR: Rework kvmppc_mmu_book3s_64_xlate() KVM: PPC: Book3S PR: Make instruction fetch fallback work for system calls KVM: PPC: Book3S PR: Don't corrupt guest state when kernel uses VMX KVM: x86: update masterclock when kvmclock_offset is calculated (v2) KVM: PPC: Book3S: Fix compile error in XICS emulation KVM: PPC: Book3S PR: return appropriate error when allocation fails arch: powerpc: kvm: add signed type cast for comparation KVM: x86: add comments where MMIO does not return to the emulator KVM: vmx: count exits to userspace during invalid guest emulation KVM: rename __kvm_io_bus_sort_cmp to kvm_io_bus_cmp kvm: optimize away THP checks in kvm_is_mmio_pfn() ... |
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Linus Torvalds
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27703bb4a6 |
PTR_RET() is a weird name, and led to some confusing usage. We ended
up with PTR_ERR_OR_ZERO(), and replacing or fixing all the usages.
This has been sitting in linux-next for a whole cycle.
Thanks,
Rusty.
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Merge tag 'PTR_RET-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull PTR_RET() removal patches from Rusty Russell:
"PTR_RET() is a weird name, and led to some confusing usage. We ended
up with PTR_ERR_OR_ZERO(), and replacing or fixing all the usages.
This has been sitting in linux-next for a whole cycle"
[ There are still some PTR_RET users scattered about, with some of them
possibly being new, but most of them existing in Rusty's tree too. We
have that
#define PTR_RET(p) PTR_ERR_OR_ZERO(p)
thing in <linux/err.h>, so they continue to work for now - Linus ]
* tag 'PTR_RET-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
GFS2: Replace PTR_RET with PTR_ERR_OR_ZERO
Btrfs: volume: Replace PTR_RET with PTR_ERR_OR_ZERO
drm/cma: Replace PTR_RET with PTR_ERR_OR_ZERO
sh_veu: Replace PTR_RET with PTR_ERR_OR_ZERO
dma-buf: Replace PTR_RET with PTR_ERR_OR_ZERO
drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO
mm/oom_kill: remove weird use of ERR_PTR()/PTR_ERR().
staging/zcache: don't use PTR_RET().
remoteproc: don't use PTR_RET().
pinctrl: don't use PTR_RET().
acpi: Replace weird use of PTR_RET.
s390: Replace weird use of PTR_RET.
PTR_RET is now PTR_ERR_OR_ZERO(): Replace most.
PTR_RET is now PTR_ERR_OR_ZERO
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Linus Torvalds
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6832d9652f |
Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timers/nohz changes from Ingo Molnar: "It mostly contains fixes and full dynticks off-case optimizations, by Frederic Weisbecker" * 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) nohz: Include local CPU in full dynticks global kick nohz: Optimize full dynticks's sched hooks with static keys nohz: Optimize full dynticks state checks with static keys nohz: Rename a few state variables vtime: Always debug check snapshot source _before_ updating it vtime: Always scale generic vtime accounting results vtime: Optimize full dynticks accounting off case with static keys vtime: Describe overriden functions in dedicated arch headers m68k: hardirq_count() only need preempt_mask.h hardirq: Split preempt count mask definitions context_tracking: Split low level state headers vtime: Fix racy cputime delta update vtime: Remove a few unneeded generic vtime state checks context_tracking: User/kernel broundary cross trace events context_tracking: Optimize context switch off case with static keys context_tracking: Optimize guest APIs off case with static key context_tracking: Optimize main APIs off case with static key context_tracking: Ground setup for static key use context_tracking: Remove full dynticks' hacky dependency on wide context tracking nohz: Only enable context tracking on full dynticks CPUs ... |
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Linus Torvalds
|
0d99b70873 |
Merge branches 'perf-urgent-for-linus' and 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf changes from Ingo Molnar:
"As a first remark I'd like to point out that the obsolete '-f'
(--force) option, which has not done anything for several releases,
has been removed from 'perf record' and related utilities. Everyone
please update muscle memory accordingly! :-)
Main changes on the perf kernel side:
- Performance optimizations:
. for trace events, by Steve Rostedt.
. for time values, by Peter Zijlstra
- New hardware support:
. for Intel Silvermont (22nm Atom) CPUs, by Zheng Yan
. for Intel SNB-EP uncore PMUs, by Zheng Yan
- Enhanced hardware support:
. for Intel uncore PMUs: add filter support for QPI boxes, by Zheng Yan
- Core perf events code enhancements and fixes:
. for full-nohz feature handling, by Frederic Weisbecker
. for group events, by Jiri Olsa
. for call chains, by Frederic Weisbecker
. for event stream parsing, by Adrian Hunter
- New ABI details:
. Add attr->mmap2 attribute, by Stephane Eranian
. Add PERF_EVENT_IOC_ID ioctl to return event ID, by Jiri Olsa
. Export u64 time_zero on the mmap header page to allow TSC
calculation, by Adrian Hunter
. Add dummy software event, by Adrian Hunter.
. Add a new PERF_SAMPLE_IDENTIFIER to make samples always
parseable, by Adrian Hunter.
. Make Power7 events available via sysfs, by Runzhen Wang.
- Code cleanups and refactorings:
. for nohz-full, by Frederic Weisbecker
. for group events, by Jiri Olsa
- Documentation updates:
. for perf_event_type, by Peter Zijlstra
Main changes on the perf tooling side (some of these tooling changes
utilize the above kernel side changes):
- Lots of 'perf trace' enhancements:
. Make 'perf trace' command line arguments consistent with
'perf record', by David Ahern.
. Allow specifying syscalls a la strace, by Arnaldo Carvalho de Melo.
. Add --verbose and -o/--output options, by Arnaldo Carvalho de Melo.
. Support ! in -e expressions, to filter a list of syscalls,
by Arnaldo Carvalho de Melo.
. Arg formatting improvements to allow masking arguments in
syscalls such as futex and open, where the some arguments are
ignored and thus should not be printed depending on other args,
by Arnaldo Carvalho de Melo.
. Beautify futex open, openat, open_by_handle_at, lseek and futex
syscalls, by Arnaldo Carvalho de Melo.
. Add option to analyze events in a file versus live, so that
one can do:
[root@zoo ~]# perf record -a -e raw_syscalls:* sleep 1
[ perf record: Woken up 0 times to write data ]
[ perf record: Captured and wrote 25.150 MB perf.data (~1098836 samples) ]
[root@zoo ~]# perf trace -i perf.data -e futex --duration 1
17.799 ( 1.020 ms): 7127 futex(uaddr: 0x7fff3f6c6674, op: 393, val: 1, utime: 0x7fff3f6c6470, ua
113.344 (95.429 ms): 7127 futex(uaddr: 0x7fff3f6c6674, op: 393, val: 1, utime: 0x7fff3f6c6470, uaddr2: 0x7fff3f6c6648, val3: 4294967
133.778 ( 1.042 ms): 18004 futex(uaddr: 0x7fff3f6c6674, op: 393, val: 1, utime: 0x7fff3f6c6470, uaddr2: 0x7fff3f6c6648, val3: 429496
[root@zoo ~]#
By David Ahern.
. Honor target pid / tid options when analyzing a file, by David Ahern.
. Introduce better formatting of syscall arguments, including so
far beautifiers for mmap, madvise, syscall return values,
by Arnaldo Carvalho de Melo.
. Handle HUGEPAGE defines in the mmap beautifier, by David Ahern.
- 'perf report/top' enhancements:
. Do annotation using /proc/kcore and /proc/kallsyms when
available, removing the forced need for a vmlinux file kernel
assembly annotation. This also improves this use case because
vmlinux has just the initial kernel image, not what is actually
in use after various code patchings by things like alternatives.
By Adrian Hunter.
. Add --ignore-callees=<regex> option to collapse undesired parts
of call graphs, by Greg Price.
. Simplify symbol filtering by doing it at machine class level,
by Adrian Hunter.
. Add support for callchains in the gtk UI, by Namhyung Kim.
. Add --objdump option to 'perf top', by Sukadev Bhattiprolu.
- 'perf kvm' enhancements:
. Add option to print only events that exceed a specified time
duration, by David Ahern.
. Improve stack trace printing, by David Ahern.
. Update documentation of the live command, by David Ahern
. Add perf kvm stat live mode that combines aspects of 'perf kvm
stat' record and report, by David Ahern.
. Add option to analyze specific VM in perf kvm stat report, by
David Ahern.
. Do not require /lib/modules/* on a guest, by Jason Wessel.
- 'perf script' enhancements:
. Fix symbol offset computation for some dsos, by David Ahern.
. Fix named threads support, by David Ahern.
. Don't install scripting files files when perl/python support
is disabled, by Arnaldo Carvalho de Melo.
- 'perf test' enhancements:
. Add various improvements and fixes to the "vmlinux matches
kallsyms" 'perf test' entry, related to the /proc/kcore
annotation feature. By Adrian Hunter.
. Add sample parsing test, by Adrian Hunter.
. Add test for reading object code, by Adrian Hunter.
. Add attr record group sampling test, by Jiri Olsa.
. Misc testing infrastructure improvements and other details,
by Jiri Olsa.
- 'perf list' enhancements:
. Skip unsupported hardware events, by Namhyung Kim.
. List pmu events, by Andi Kleen.
- 'perf diff' enhancements:
. Add support for more than two files comparison, by Jiri Olsa.
- 'perf sched' enhancements:
. Various improvements, including removing reliance on some
scheduler tracepoints that provide the same information as the
PERF_RECORD_{FORK,EXIT} events. By David Ahern.
. Remove odd build stall by moving a large struct initialization
from a local variable to a global one, by Namhyung Kim.
- 'perf stat' enhancements:
. Add --initial-delay option to skip measuring for a defined
startup phase, by Andi Kleen.
- Generic perf tooling infrastructure/plumbing changes:
. Tidy up sample parsing validation, by Adrian Hunter.
. Fix up jobserver setup in libtraceevent Makefile.
by Arnaldo Carvalho de Melo.
. Debug improvements, by Adrian Hunter.
. Fix correlation of samples coming after PERF_RECORD_EXIT event,
by David Ahern.
. Improve robustness of the topology parsing code,
by Stephane Eranian.
. Add group leader sampling, that allows just one event in a group
to sample while the other events have just its values read,
by Jiri Olsa.
. Add support for a new modifier "D", which requests that the
event, or group of events, be pinned to the PMU.
By Michael Ellerman.
. Support callchain sorting based on addresses, by Andi Kleen
. Prep work for multi perf data file storage, by Jiri Olsa.
. libtraceevent cleanups, by Namhyung Kim.
And lots and lots of other fixes and code reorganizations that did not
make it into the list, see the shortlog, diffstat and the Git log for
details!"
[ Also merge a leftover from the 3.11 cycle ]
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Prevent race in unthrottling code
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (237 commits)
perf trace: Tell arg formatters the arg index
perf trace: Add beautifier for open's flags arg
perf trace: Add beautifier for lseek's whence arg
perf tools: Fix symbol offset computation for some dsos
perf list: Skip unsupported events
perf tests: Add 'keep tracking' test
perf tools: Add support for PERF_COUNT_SW_DUMMY
perf: Add a dummy software event to keep tracking
perf trace: Add beautifier for futex 'operation' parm
perf trace: Allow syscall arg formatters to mask args
perf: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node()
perf: Export struct perf_branch_entry to userspace
perf: Add attr->mmap2 attribute to an event
perf/x86: Add Silvermont (22nm Atom) support
perf/x86: use INTEL_UEVENT_EXTRA_REG to define MSR_OFFCORE_RSP_X
perf trace: Handle missing HUGEPAGE defines
perf trace: Honor target pid / tid options when analyzing a file
perf trace: Add option to analyze events in a file versus live
perf evlist: Add tracepoint lookup by name
perf tests: Add a sample parsing test
...
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Linus Torvalds
|
f83b0a4e4c |
Big part of this is the addition of compression to the
generic pstore layer so that all backends can use the pitiful amounts of storage they control more effectively. Three other small fixes/cleanups too. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAABAgAGBQJSJhMJAAoJEKurIx+X31iBcpsP/1DfQDD9IHEt7E+tTObIdKOx 1yygmQu3IL2pvdUIkKRfblDP0PJRuwJmRPdp48Rb5CV+8i4WQuTCueOvNomIMZ4G 1DkAzJPD2W4C+dSBD3rvWk4totXCsqLwCkaWp/FzWM7OW+cJN3Kj3Vdh3k01CVxn PqfCoZB5y8CVVd6EQiUmAU8z/LoGE0psxxO/CL7lBC1IsAlVqSO93hqHwE9cm/f4 7EN069sHbKV5zOT1QsV7agn9TfHAHuj0fr3t8aDs/cC0rgz19VAsxg0sRkMHzKJD MGLqGCTHyQvYmo2xfHZLb1NjhL6EmHsQqhM9KQnkdDyQ3QgYOCSsglcYygSdZcN1 ZjynLbD/OSkLABefyw/ZjW1GGzIqU6jWzj+0fmbkUa0Pe1B1aDuf/OiAcYMRJdmg clWE7RbnisSlrLYl3MI36T4XvyzzHVfumOVET6foWcnVb8/t/gHhC6Yf96FSUWVj jISE8ECfjkk7SQTYHE0ThvBmqv8M/IwUEg6wA9tnsQByLMAO+VqGoXcBMKOxz+hD 7TPoQpa04Sqnplwx7HefbhErKH9TCQWUOgT5kjB7+bzbPpEG1cB3pb7izg3VFd7k l7d6vfXtAukeuYmU8PgY/ea6/Nnw7iMcDZCegzv+A4Ms/kWM9oH2ctvV6V/edYyb 0x7BgSOu69HztW5IveB6 =6H8r -----END PGP SIGNATURE----- Merge tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull pstore changes from Tony Luck: "A big part of this is the addition of compression to the generic pstore layer so that all backends can use the pitiful amounts of storage they control more effectively. Three other small fixes/cleanups too. * tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: pstore/ram: (really) fix undefined usage of rounddown_pow_of_two pstore/ram: Read and write to the 'compressed' flag of pstore efi-pstore: Read and write to the 'compressed' flag of pstore erst: Read and write to the 'compressed' flag of pstore powerpc/pseries: Read and write to the 'compressed' flag of pstore pstore: Add file extension to pstore file if compressed pstore: Add decompression support to pstore pstore: Introduce new argument 'compressed' in the read callback pstore: Add compression support to pstore pstore/Kconfig: Select ZLIB_DEFLATE and ZLIB_INFLATE when PSTORE is selected pstore: Add new argument 'compressed' in pstore write callback powerpc/pseries: Remove (de)compression in nvram with pstore enabled pstore: d_alloc_name() doesn't return an ERR_PTR acpi/apei/erst: Add missing iounmap() on error in erst_exec_move_data() |
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Al Viro
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70abadedab |
powerpc kvm: use fdget
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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Al Viro
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6af4ea0ba7 |
oprofilefs_create_...() do not need superblock argument
same story as with oprofilefs_mkdir() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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Al Viro
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ecde28237e |
oprofilefs_mkdir() doesn't need superblock argument
it's always equal to ->d_sb of the second argument (parent dentry), due to either being literally that, or ->d_sb of parent's parent. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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Al Viro
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ef7bca1456 |
oprofile: don't bother with passing superblock to ->create_files()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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Linus Torvalds
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a923874198 |
PCI changes for the v3.12 merge window:
PCI device hotplug
- Use PCIe native hotplug, not ACPI hotplug, when possible (Neil Horman)
- Assign resources on per-host bridge basis (Yinghai Lu)
MPS (Max Payload Size)
- Allow larger MPS settings below hotplug-capable Root Port (Yijing Wang)
- Add warnings about unsafe MPS settings (Yijing Wang)
- Simplify interface and messages (Bjorn Helgaas)
SR-IOV
- Return -ENOSYS on non-SR-IOV devices (Stefan Assmann)
- Update NumVFs register when disabling SR-IOV (Yijing Wang)
Virtualization
- Add bus and slot reset support (Alex Williamson)
- Fix ACS (Access Control Services) issues (Alex Williamson)
Miscellaneous
- Simplify PCIe Capability accessors (Bjorn Helgaas)
- Add pcibios_pm_ops for arch-specific hibernate stuff (Sebastian Ott)
- Disable decoding during BAR sizing only when necessary (Zoltan Kiss)
- Delay enabling bridges until they're needed (Yinghai Lu)
- Split Designware support into Synopsys and Exynos parts (Jingoo Han)
- Convert class code to use dev_groups (Greg Kroah-Hartman)
- Cleanup Designware and Exynos I/O access wrappers (Seungwon Jeon)
- Fix bridge I/O window alignment (Bjorn Helgaas)
- Add pci_wait_for_pending_transaction() (Casey Leedom)
- Use devm_ioremap_resource() in Marvell driver (Tushar Behera)
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Merge tag 'pci-v3.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas:
PCI device hotplug:
- Use PCIe native hotplug, not ACPI hotplug, when possible (Neil Horman)
- Assign resources on per-host bridge basis (Yinghai Lu)
MPS (Max Payload Size):
- Allow larger MPS settings below hotplug-capable Root Port (Yijing Wang)
- Add warnings about unsafe MPS settings (Yijing Wang)
- Simplify interface and messages (Bjorn Helgaas)
SR-IOV:
- Return -ENOSYS on non-SR-IOV devices (Stefan Assmann)
- Update NumVFs register when disabling SR-IOV (Yijing Wang)
Virtualization:
- Add bus and slot reset support (Alex Williamson)
- Fix ACS (Access Control Services) issues (Alex Williamson)
Miscellaneous:
- Simplify PCIe Capability accessors (Bjorn Helgaas)
- Add pcibios_pm_ops for arch-specific hibernate stuff (Sebastian Ott)
- Disable decoding during BAR sizing only when necessary (Zoltan Kiss)
- Delay enabling bridges until they're needed (Yinghai Lu)
- Split Designware support into Synopsys and Exynos parts (Jingoo Han)
- Convert class code to use dev_groups (Greg Kroah-Hartman)
- Cleanup Designware and Exynos I/O access wrappers (Seungwon Jeon)
- Fix bridge I/O window alignment (Bjorn Helgaas)
- Add pci_wait_for_pending_transaction() (Casey Leedom)
- Use devm_ioremap_resource() in Marvell driver (Tushar Behera)
* tag 'pci-v3.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (63 commits)
PCI/ACPI: Fix _OSC ordering to allow PCIe hotplug use when available
PCI: exynos: Add I/O access wrappers
PCI: designware: Drop "addr" arg from dw_pcie_readl_rc()/dw_pcie_writel_rc()
PCI: Remove pcie_cap_has_devctl()
PCI: Support PCIe Capability Slot registers only for ports with slots
PCI: Remove PCIe Capability version checks
PCI: Allow PCIe Capability link-related register access for switches
PCI: Add offsets of PCIe capability registers
PCI: Tidy bitmasks and spacing of PCIe capability definitions
PCI: Remove obsolete comment reference to pci_pcie_cap2()
PCI: Clarify PCI_EXP_TYPE_PCI_BRIDGE comment
PCI: Rename PCIe capability definitions to follow convention
PCI: Warn if unsafe MPS settings detected
PCI: Fix MPS peer-to-peer DMA comment syntax
PCI: Disable decoding for BAR sizing only when it was actually enabled
PCI: Add comment about needing pci_msi_off() even when CONFIG_PCI_MSI=n
PCI: Add pcibios_pm_ops for optional arch-specific hibernate functionality
PCI: Don't restrict MPS for slots below Root Ports
PCI: Simplify MPS test for Downstream Port
PCI: Remove unnecessary check for pcie_get_mps() failure
...
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