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691,473 commits

Author SHA1 Message Date
Namhyung Kim
30d476ae73 perf report: Enable group view with hierarchy
Now that all the missing pieces are implemented, let's enable it.  An
example output below:

  $ perf record -e '{cycles,instructions}' make
  $ perf report --hierarchy --stdio
  ...
  #               Overhead  Command / Shared Object / Symbol
  # ......................  ..................................
  #
  ...
      25.74%  27.18%        sh
         19.96%  24.14%        libc-2.24.so
            9.55%  14.64%        [.] __strcmp_sse2
            1.54%   0.00%        [.] __tfind
            1.07%   1.13%        [.] _int_malloc
            0.95%   0.00%        [.] __strchr_sse2
            0.89%   1.39%        [.] __tsearch
            0.76%   0.00%        [.] strlen
  ...

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Requested-by: Andi Kleen <andi@firstfloor.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20160913074552.13284-8-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 16:43:41 -03:00
Namhyung Kim
195bc0f844 perf ui/stdio: Rename print_hierarchy_header()
Now the hists__fprintf_hierarchy_headers() is a simple wrapper passing
field separator.  Let's do it directly.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20160913074552.13284-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 16:41:36 -03:00
Namhyung Kim
9a6ad25b5a perf ui/stdio: Always reset output width for hierarchy
When the --hierarchy option is used, each entry has its own hpp_list to
show the result.  But it is not updating the width of each column for
perf-top.  The perf-report command has no problem since it resets it
during header display.

  $ sudo perf top --hierarchy --stdio

   PerfTop:     160 irqs/sec  kernel:38.8%  exact: 100.0%
                                     [4000Hz cycles:pp],  (all, 12 CPUs)
  ----------------------------------------------------------------------

   52.32%     perf
      24.74%     [.] __symbols__insert
      5.62%     [.] rb_next
      5.14%     [.] dso__load_sym

Move the code into hists__fprintf() so that it can be called always.
Also it'd be better to put similar code together.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Fixes: 1b2dbbf41a ("perf hists: Use own hpp_list for hierarchy mode")
Link: http://lkml.kernel.org/r/20160913074552.13284-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 16:41:21 -03:00
Namhyung Kim
d2580c7a5b perf hist: Initialize hierarchy tree explicitly
The hroot_in and hroot_out are roots of hierarchy trees of hist entries.

But when a hist entry is initialized by copying existing template entry,
it sometimes has non-empty tree and copies it incorrectly.  This is a
problem especially when an event group is used since it creates dummy
entries from already-processed entries in other event members.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20160913074552.13284-4-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 16:36:46 -03:00
Namhyung Kim
9d97b8f512 perf hists: Introduce hists__link_hierarchy()
The hists__link_hierarchy() is to support hierarchy reports with an
event group.  When it matches the leader event and the other members
(using hists__match_hierarchy()), it also needs to link unmatched member
entries with a dummy leader event so that it can show up in the output.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20160913074552.13284-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 16:35:46 -03:00
Namhyung Kim
09034de63e perf hists: Introduce hists__match_hierarchy()
The hists__match_hierarchy() is to find matching hist entries in a
group.  A matching entry has the same values for all sort keys given.

With an event group (e.g.: -e "{cycles,instructions}"), a leader event
should show other members in a group.  So each entry in the leader
should be able to find its pair entries which have same values.

With hierarchy mode, it needs to search all matching children in a
hierarchy.

An example output looks like:

  #               Overhead  Command / Shared Object / Symbol
  # ......................  ..................................
  #
      25.74%  27.18%        sh
         19.96%  24.14%        libc-2.24.so
            9.55%  14.64%        [.] __strcmp_sse2
            1.54%   0.00%        [.] __tfind
            1.07%   1.13%        [.] _int_malloc
  ...

In the above example, two overheads are shown - one for the leader and
another for the other group member.  They were matched since their
command, dso and symbol have the same values.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20160913074552.13284-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 16:31:24 -03:00
Linus Torvalds
504cb1c25b Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Ingo Molnar:
 "Another lockless_dereference() Sparse fix"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/barriers: Don't use sizeof(void) in lockless_dereference()
2016-09-13 12:13:58 -07:00
Wang Nan
0a4a7e435f perf build: Compare mman.h related headers against kernel originals
As with other cloned headers, compare the newly introduced mman related
headers against their source copy in kernel tree.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1473684871-209320-4-git-send-email-wangnan0@huawei.com
[ Added -I to ignore the uapi/ difference ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 16:13:29 -03:00
Linus Torvalds
7c2c114416 Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Ingo Molnar:
 "This contains a Xen fix, an arm64 fix and a race condition /
  robustization set of fixes related to ExitBootServices() usage and
  boundary conditions"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/efi: Use efi_exit_boot_services()
  efi/libstub: Use efi_exit_boot_services() in FDT
  efi/libstub: Introduce ExitBootServices helper
  efi/libstub: Allocate headspace in efi_get_memory_map()
  efi: Fix handling error value in fdt_find_uefi_params
  efi: Make for_each_efi_memory_desc_in_map() cope with running on Xen
2016-09-13 12:02:00 -07:00
Masahiro Yamada
f148b41e8b x86: Clean up various simple wrapper functions
Remove unneeded variables and assignments.

While we are here, let's fix the following as well:

  - Remove unnecessary parentheses
  - Remove unnecessary unsigned-suffix 'U' from constant values
  - Reword the comment in set_apic_id() (suggested by Thomas Gleixner)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Alex Thorlton <athorlton@sgi.com>
Cc: Andrew Banman <abanman@sgi.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Daniel J Blueman <daniel@numascale.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Mike Travis <travis@sgi.com>
Cc: Nathan Zimmer <nzimmer@sgi.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steffen Persvold <sp@numascale.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Wei Jiangang <weijg.fnst@cn.fujitsu.com>
Link: http://lkml.kernel.org/r/1473573502-27954-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-09-13 20:42:58 +02:00
Andy Lutomirski
85063fac1f x86/entry/64: Clean up and document espfix64 stack setup
The espfix64 setup code was a bit inscrutible and contained an
unnecessary push of RAX.  Remove that push, update all the stack
offsets to match, and document the whole mess.

Reported-By: Borislav Petkov <bp@alien8.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/e5459eb10cf1175c8b36b840bc425f210d045f35.1473717910.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-09-13 20:34:16 +02:00
Andy Lutomirski
1ef0199a1a selftests/x86/sigreturn: Use CX, not AX, as the scratch register
RAX is handled specially in ESPFIX64.  Use CX as our scratch
register so that, if something goes wrong with RAX handling, we'll
notice.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/9ceeb24ea56925586c330dc46306f757ddea9fb5.1473717910.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-09-13 20:34:15 +02:00
Rik van Riel
d59dc7bcfa sched/numa, mm: Revert to checking pmd/pte_write instead of VMA flags
Commit:

  4d94246699 ("mm: convert p[te|md]_mknonnuma and remaining page table manipulations")

changed NUMA balancing from _PAGE_NUMA to using PROT_NONE, and was quickly
found to introduce a regression with NUMA grouping.

It was followed up by these commits:

 53da3bc2ba ("mm: fix up numa read-only thread grouping logic")
 bea66fbd11 ("mm: numa: group related processes based on VMA flags instead of page table flags")
 b191f9b106 ("mm: numa: preserve PTE write permissions across a NUMA hinting fault")

The first of those two commits try alternate approaches to NUMA
grouping, which apparently do not work as well as looking at the PTE
write permissions.

The latter patch preserves the PTE write permissions across a NUMA
protection fault. However, it forgets to revert the condition for
whether or not to group tasks together back to what it was before
v3.19, even though the information is now preserved in the page tables
once again.

This patch brings the NUMA grouping heuristic back to what it was
before commit 4d94246699, which the changelogs of subsequent
commits suggest worked best.

We have all the information again. We should probably use it.

Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: aarcange@redhat.com
Cc: linux-mm@kvack.org
Cc: mgorman@suse.de
Link: http://lkml.kernel.org/r/20160908213053.07c992a9@annuminas.surriel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-09-13 20:31:33 +02:00
Arnaldo Carvalho de Melo
fbef103fad perf tools: Do hugetlb handling in more systems
The csets:

  0ac3348e50 ("perf tools: Recognize hugetlb mapping as anon mapping")
  d7e404af11 ("perf record: Mark MAP_HUGETLB when synthesizing mmap events")

Added code conditional on MAP_HUGETLB, to make it build in older systems
where that define wasn't available. Now that we grabbed copies of
uapi/linux/mmap.h to have all those definitions in tools/, use it so
that we can support building the tools for older systems (without the
MAP_HUGETLB define in its libc headers) using new kernels that support
such maps.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Link: http://lkml.kernel.org/n/tip-wv6oqbfkpxbix4umj2kcfmaz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 15:26:30 -03:00
Arnaldo Carvalho de Melo
277cf08f3f perf trace beauty mmap: Fix defines for non !x86_64
Several defines have different values in different arches, so we can't
just define it to the x86_64 value, use uapi/linux/mmap.h that was
recently introduced to reliably find those, not using possibly outdated
libc headers.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Link: http://lkml.kernel.org/n/tip-4eajp5yp8i2fuw44n7jmcg5t@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 15:26:29 -03:00
Wang Nan
f3539c12d8 tools include: Add uapi mman.h for each architecture
Some mmap related macros have different values for different
architectures. This patch introduces uapi mman.h for each
architectures.

Three headers are cloned from kernel include to tools/include:

 tools/include/uapi/asm-generic/mman-common.h
 tools/include/uapi/asm-generic/mman.h
 tools/include/uapi/linux/mman.h

The main part of this patch is generated by following script:

 macros=`cat $0 | awk 'V==1 {print}; /^# start macro list/ {V=1}'`
 for arch in `ls tools/arch`
 do
   [ -d tools/arch/$arch/include/uapi/asm ] || mkdir -p tools/arch/$arch/include/uapi/asm
   src=arch/$arch/include/uapi/asm/mman.h
   target=tools/arch/$arch/include/uapi/asm/mman.h
   guard="TOOLS_ARCH_"`echo $arch | awk '{print toupper($0)}'`_UAPI_ASM_MMAN_FIX_H
   echo '#ifndef '$guard > $target
   echo '#define '$guard >> $target

   [ -f $src ] &&
   for m in $macros
   do
     if grep '#define[ \t]*'$m $src > /dev/null 2>&1
     then
       grep -h '#define[ \t]*'$m $src | sed 's/[ \t]*\/\*.*$//g' >> $target
     fi
   done

   if [ -f $src ]
   then
      grep '#include <asm-generic' $src >> $target
   else
      echo "#include <asm-generic/mman.h>" >> $target
   fi
   echo '#endif' >> $target
   echo "$target"
 done

 exit 0
 # Following macros are extracted from:
 # tools/perf/trace/beauty/mmap.c
 #
 # start macro list
 MADV_DODUMP
 MADV_DOFORK
 MADV_DONTDUMP
 MADV_DONTFORK
 MADV_DONTNEED
 MADV_HUGEPAGE
 MADV_HWPOISON
 MADV_MERGEABLE
 MADV_NOHUGEPAGE
 MADV_NORMAL
 MADV_RANDOM
 MADV_REMOVE
 MADV_SEQUENTIAL
 MADV_SOFT_OFFLINE
 MADV_UNMERGEABLE
 MADV_WILLNEED
 MAP_32BIT
 MAP_ANONYMOUS
 MAP_DENYWRITE
 MAP_EXECUTABLE
 MAP_FILE
 MAP_FIXED
 MAP_GROWSDOWN
 MAP_HUGETLB
 MAP_LOCKED
 MAP_NONBLOCK
 MAP_NORESERVE
 MAP_POPULATE
 MAP_PRIVATE
 MAP_SHARED
 MAP_STACK
 MAP_UNINITIALIZED
 MREMAP_FIXED
 MREMAP_MAYMOVE
 PROT_EXEC
 PROT_GROWSDOWN
 PROT_GROWSUP
 PROT_NONE
 PROT_READ
 PROT_SEM
 PROT_WRITE

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1473684871-209320-2-git-send-email-wangnan0@huawei.com
[ Added new files to tools/perf/MANIFEST to fix the detached tarball build, add mman.h for ARC ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-09-13 15:26:08 -03:00
Ingo Molnar
5465fe0fc3 * Refactor the EFI memory map code into architecture neutral files
and allow drivers to permanently reserve EFI boot services regions
    on x86, as well as ARM/arm64 - Matt Fleming
 
  * Add ARM support for the EFI esrt driver - Ard Biesheuvel
 
  * Make the EFI runtime services and efivar API interruptible by
    swapping spinlocks for semaphores - Sylvain Chouleur
 
  * Provide the EFI identity mapping for kexec which allows kexec to
    work on SGI/UV platforms with requiring the "noefi" kernel command
    line parameter - Alex Thorlton
 
  * Add debugfs node to dump EFI page tables on arm64 - Ard Biesheuvel
 
  * Merge the EFI test driver being carried out of tree until now in
    the FWTS project - Ivan Hu
 
  * Expand the list of flags for classifying EFI regions as "RAM" on
    arm64 so we align with the UEFI spec - Ard Biesheuvel
 
  * Optimise out the EFI mixed mode if it's unsupported (CONFIG_X86_32)
    or disabled (CONFIG_EFI_MIXED=n) and switch the early EFI boot
    services function table for direct calls, alleviating us from
    having to maintain the custom function table - Lukas Wunner
 
  * Miscellaneous cleanups and fixes
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Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into efi/core

Pull EFI updates from Matt Fleming:

"* Refactor the EFI memory map code into architecture neutral files
   and allow drivers to permanently reserve EFI boot services regions
   on x86, as well as ARM/arm64 - Matt Fleming

 * Add ARM support for the EFI esrt driver - Ard Biesheuvel

 * Make the EFI runtime services and efivar API interruptible by
   swapping spinlocks for semaphores - Sylvain Chouleur

 * Provide the EFI identity mapping for kexec which allows kexec to
   work on SGI/UV platforms with requiring the "noefi" kernel command
   line parameter - Alex Thorlton

 * Add debugfs node to dump EFI page tables on arm64 - Ard Biesheuvel

 * Merge the EFI test driver being carried out of tree until now in
   the FWTS project - Ivan Hu

 * Expand the list of flags for classifying EFI regions as "RAM" on
   arm64 so we align with the UEFI spec - Ard Biesheuvel

 * Optimise out the EFI mixed mode if it's unsupported (CONFIG_X86_32)
   or disabled (CONFIG_EFI_MIXED=n) and switch the early EFI boot
   services function table for direct calls, alleviating us from
   having to maintain the custom function table - Lukas Wunner

 * Miscellaneous cleanups and fixes"

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-09-13 20:21:55 +02:00
Johannes Berg
89b706fb28 cfg80211: reduce connect key caching struct size
After the previous patches, connect keys can only (correctly)
be used for storing static WEP keys. Therefore, remove all the
data for dealing with key index 4/5 and reduce the size of the
key material to the maximum for WEP keys.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:54 +02:00
Johannes Berg
e9c8f8d3a4 cfg80211: validate key index better
Don't accept it if a key_idx < 0 snuck through, reject WEP keys with
key index 4 and 5 (which are used for IGTKs) and don't allow IGTKs
with key indices other than 4 and 5. This makes the key data match
expectations better.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:53 +02:00
Johannes Berg
9381e267b6 cfg80211: wext: only allow WEP keys to be configured before connected
When not connected, anything but WEP keys shouldn't be allowed to be
configured for later - only static WEP keys make sense at this point.
Change wext to reject anything else just like nl80211 does.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:52 +02:00
Johannes Berg
386b1f2738 nl80211: only allow WEP keys during connect command
This was already documented that way in nl80211.h, but the
parsing code still accepted other key types. Change it to
really only accept WEP keys as documented.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:52 +02:00
Johannes Berg
42ee231cd1 nl80211: fix connect keys range check
Only key index 0-3 should be accepted, 4/5 are for IGTKs and
cannot be used as connect keys. Fix the range checking to not
allow such erroneous configurations.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:51 +02:00
Johannes Berg
b6b5555bc8 cfg80211: disallow shared key authentication with key index 4
Key index 4 can only be used for an IGTK, so the range checks
for shared key authentication should treat 4 as an error, fix
that in the code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:51 +02:00
Linus Torvalds
106f2e59ee Merge tag 'md/4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
Pull MD fixes from Shaohua Li:
 "A few bug fixes for MD:

   - Guoqing fixed a bug compiling md-cluster in kernel

   - I fixed a potential deadlock in raid5-cache superblock write, a
     hang in raid5 reshape resume and a race condition introduced in
     rc4"

* tag 'md/4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
  raid5: fix a small race condition
  md-cluster: make md-cluster also can work when compiled into kernel
  raid5: guarantee enough stripes to avoid reshape hang
  raid5-cache: fix a deadlock in superblock write
2016-09-13 11:19:52 -07:00
Johannes Berg
ad5987b47e nl80211: validate number of probe response CSA counters
Due to an apparent copy/paste bug, the number of counters for the
beacon configuration were checked twice, instead of checking the
number of probe response counters. Fix this to check the number of
probe response counters before parsing those.

Cc: stable@vger.kernel.org
Fixes: 9a774c78e2 ("cfg80211: Support multiple CSA counters")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:19:27 +02:00
Linus Torvalds
309a18ae36 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto bugfix from Herbert Xu:
 "Fix a bug in the cryptd code that may lead to crashes"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: cryptd - initialize child shash_desc on import
2016-09-13 11:10:49 -07:00
Wei Yongjun
0d2665b6bc serial: mxs-auart: Use PTR_ERR_OR_ZERO() to simplify the code
Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR.

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-13 18:54:34 +02:00
Fabio Estevam
5d7519dfc9 serial: mxs-auart: Disable clock on error path
We should disable the previously acquired clock when enabling s->clk
fails.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-13 18:54:34 +02:00
Alexander Sverdlin
8b2303de39 serial: core: Fix handling of options after MMIO address
Guenter Roeck reported a regression caused by commit "serial: earlycon:
Extend earlycon command line option to support 64-bit addresses":

console= and earlycon= options have the following format:
...,<addr>,<options>

Historically used here simple_strtoul() had no problems with comma, but the
new and recommended kstrtoull() requires null-terminated string and returns
-EINVAL in case there are "options" at the end. There is no recommended to
use function currently that will support it, so stick to obsolete
simple_strtoull() variant.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-13 18:54:34 +02:00
Uwe Kleine-König
1e512d4533 serial: imx: add error messages when .probe fails
Some functions called by serial_imx_probe emit an error message themself
(like kmalloc() and friends). clk_prepare_enable() and
devm_request_irq() however don't which might make the driver silently
fail to probe. So add an error message for these.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-13 18:54:34 +02:00
David S. Miller
bed806cb26 Merge branch 'mlxsw-ethtool'
Jiri Pirko says:

====================
mlxsw: ethtool enhancements

Ido says:

Patches 1-4 do some minor cleanup in current ethtool ops. Patch 5
replace legacy {get,set}_settings callbacks with
{get,set}_link_ksettings.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 12:16:44 -04:00
Ido Schimmel
b9d66a36aa mlxsw: spectrum: Add support for new ethtool API
Remove the deprecated {get,set}_settings callbacks and instead add
{get,set}_link_ksettings along with support for newly available speeds.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 12:16:34 -04:00
Ido Schimmel
91bdc7a43a mlxsw: spectrum: Indicate support of multiple port types
The device can support multiple port types, so don't return on first
match.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 12:16:33 -04:00
Ido Schimmel
0213424ada mlxsw: spectrum: Report port type according to operational speed
In case port isn't operational we shouldn't report the port type, but
instead return PORT_OTHER. This is consistent with most other drivers
that return PORT_OTHER when media type can't be determined.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 12:16:33 -04:00
Ido Schimmel
4149b97f72 mlxsw: spectrum: Report link partner's advertised speeds
If autonegotiation was performed successfully, then we should report the
link partner's advertised speeds instead of the operational speed of the
port.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 12:16:33 -04:00
Ido Schimmel
0c83f88c02 mlxsw: spectrum: Correctly report autonegotiation
Up until now the device always reported autonegotiation to be off
although it was on by default.

Allow the user to disable / enable autonegotiation and report its status
correctly.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 12:16:33 -04:00
Christophe Jaillet
440f895aa9 drivers: net: phy: xgene: Fix 'remove' function
If 'IS_ERR(pdata->clk)' is true, then 'clk_disable_unprepare(pdata->clk)'
will do nothing.

It is likely that 'if (!IS_ERR(pdata->clk))' was expected here.
In fact, the test can even be removed because 'clk_disable_unprepare'
already handles such cases.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 12:04:11 -04:00
Wanpeng Li
57ccdf449f tick/nohz: Prevent stopping the tick on an offline CPU
can_stop_full_tick() has no check for offline cpus. So it allows to stop
the tick on an offline cpu from the interrupt return path, which is wrong
and subsequently makes irq_work_needs_cpu() warn about being called for an
offline cpu.

Commit f7ea0fd639 ("tick: Don't invoke tick_nohz_stop_sched_tick() if
the cpu is offline") added prevention for can_stop_idle_tick(), but forgot
to do the same in can_stop_full_tick(). Add it.

[ tglx: Massaged changelog ]

Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1473245473-4463-1-git-send-email-wanpeng.li@hotmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-09-13 17:53:52 +02:00
Arnd Bergmann
292cc1affb Allwinner DT changes for 4.9, take 2
A second set of device tree changes, this time switching a few SoCs to the
 new sunxi-ng clock framework. We also added the support for a new SoC
 (NextThing GR8 and its evaluation board), and the support for the DRM
 driver in the A33.
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Merge tag 'sunxi-dt-for-4.9-2' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/late

Merge "Allwinner DT changes for 4.9, take 2" from Maxime Ripard:

A second set of device tree changes, this time switching a few SoCs to the
new sunxi-ng clock framework. We also added the support for a new SoC
(NextThing GR8 and its evaluation board), and the support for the DRM
driver in the A33.

To maintain bisectability, while avoiding some un-trivial merge
conflicts, I had to merge the clk branch that I've sent a PR to Mike
and Stephen. This branch will of course be stable.

* tag 'sunxi-dt-for-4.9-2' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: (53 commits)
  ARM: dts: gr8: Add support for the GR8 evaluation board
  ARM: dts: Add NextThing GR8 dtsi
  ARM: dts: sun8i: Move A23/A33 usbphy and usb_otg nodes to common dtsi
  ARM: sun8i: a23/a33: Add RGB666 pins
  ARM: sun8i: a33: Add display pipeline
  ARM: sun8i: Convert the A23 and A33 to the CCU
  ARM: dts: sun6i: switch A31/A31s to new CCU clock bindings
  clk: sunxi-ng: Add hardware dependency
  clk: sunxi-ng: Add A23 CCU
  clk: sunxi-ng: Add A33 CCU support
  clk: sunxi-ng: Add N-class clocks support
  clk: sunxi-ng: mux: Add mux table macro
  clk: sunxi-ng: div: Allow to set a maximum
  clk: sunxi-ng: div: Add kerneldoc for the _ccu_div structure
  clk: sunxi-ng: div: Add mux table macros
  devicetree: Add vendor prefix for FriendlyARM
  ARM: dts: sun8i: Add dts file for the NanoPi NEO SBC
  ARM: dts: sun8i-q8-common: Add support for SDIO wifi controllers
  ARM: dts: sun8i: Add dts file for the Orange Pi Plus2E SBC
  ARM: dts: sun8i: Orange Pi Plus dts is for the Plus and Plus 2
  ...
2016-09-13 17:51:23 +02:00
Philippe Reynes
36a19b2995 net: ethernet: apm: xgene: use new api ethtool_{get|set}_link_ksettings
The ethtool api {get|set}_settings is deprecated.
We move this driver to new api {get|set}_link_ksettings.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 11:45:19 -04:00
Philippe Reynes
971d3a44c0 net: ethernet: apm: xgene: use phydev from struct net_device
The private structure contain a pointer to phydev, but the structure
net_device already contain such pointer. So we can remove the pointer
phy_dev in the private structure, and update the driver to use the
one contained in struct net_device.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 11:45:19 -04:00
Xin Long
715f5552b1 sctp: hold the transport before using it in sctp_hash_cmp
Since commit 4f00878126 ("sctp: apply rhashtable api to send/recv
path"), sctp uses transport rhashtable with .obj_cmpfn sctp_hash_cmp,
in which it compares the members of the transport with the rhashtable
args to check if it's the right transport.

But sctp uses the transport without holding it in sctp_hash_cmp, it can
cause a use-after-free panic. As after it gets transport from hashtable,
another CPU may close the sk and free the asoc. In sctp_association_free,
it frees all the transports, meanwhile, the assoc's refcnt may be reduced
to 0, assoc can be destroyed by sctp_association_destroy.

So after that, transport->assoc is actually an unavailable memory address
in sctp_hash_cmp. Although sctp_hash_cmp is under rcu_read_lock, it still
can not avoid this, as assoc is not freed by RCU.

This patch is to hold the transport before checking it's members with
sctp_transport_hold, in which it checks the refcnt first, holds it if
it's not 0.

Fixes: 4f00878126 ("sctp: apply rhashtable api to send/recv path")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 11:44:58 -04:00
Arnd Bergmann
327c2c1562 CLCD graphics on the Nomadik NHK15
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Merge tag 'clcd-nomadik' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik into next/dt

Pull "CLCD graphics on the Nomadik NHK15" from Linus Walleij:

* tag 'clcd-nomadik' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik:
  ARM: dts: add the CLCD LCD display to the NHK15
  ARM: dts: add PMU to the NHK15 device tree
  ARM: nomadik: select MFD_SYSCON
  dt-bindings: Add TPO TPG110 binding
  dt-bindings: add vendor TPO
  ARM: dts: add STMPE PWM to the NHK15 device tree
2016-09-13 17:43:48 +02:00
Wei Yongjun
a5f54fcc8a net: ethernet: dwmac: fix non static symbol warning
Fixes the following sparse warning:

drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c:172:1: warning:
 symbol 'stm32_dwmac_pm_ops' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 11:42:27 -04:00
Wei Yongjun
a7c22bda52 net: macb: fix missing unlock on error in macb_start_xmit()
Fix missing unlock before return from function macb_start_xmit()
in the error handling case.

Fixes: 007e4ba3ee ("net: macb: initialize checksum when using
checksum offloading")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 11:42:27 -04:00
Arnd Bergmann
4dbacf2cde i.MX device tree changes for 4.9:
- Add SoC support for i.MX7 Solo which is a reduced version of i.MX7
    Dual.
  - New board support: Gateworks Ventana i.MX6Q/DL GW553x, Inverse Path
    i.MX53 USB armory, i.MX6Q/DL TS-4900 from Technologic Systems,
    i.MX6UL GEA M6UL modules from Engicam, i.MX7 Solo Warp7 board.
  - Add DMA and IPU CSI devices for i.MX53 SoC support.
  - Refine i.MX7 Dual SoC DTS as a preparation of i.MX7 Solo support.
  - Use of_graph dt nodes to describe the panel for vf610-colibri and
    ls1021a-twr boards.
  - Add gpio-ranges property to i.MX6 GPIO controllers, which will be
    useful when GPIO driver is changed to request pad configuration as
    GPIO function.
  - Random device additions or small changes for various board support.
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Merge tag 'imx-dt-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt

Pull "i.MX device tree changes for 4.9" from Shawn Guo:

 - Add SoC support for i.MX7 Solo which is a reduced version of i.MX7
   Dual.
 - New board support: Gateworks Ventana i.MX6Q/DL GW553x, Inverse Path
   i.MX53 USB armory, i.MX6Q/DL TS-4900 from Technologic Systems,
   i.MX6UL GEA M6UL modules from Engicam, i.MX7 Solo Warp7 board.
 - Add DMA and IPU CSI devices for i.MX53 SoC support.
 - Refine i.MX7 Dual SoC DTS as a preparation of i.MX7 Solo support.
 - Use of_graph dt nodes to describe the panel for vf610-colibri and
   ls1021a-twr boards.
 - Add gpio-ranges property to i.MX6 GPIO controllers, which will be
   useful when GPIO driver is changed to request pad configuration as
   GPIO function.
 - Random device additions or small changes for various board support.

* tag 'imx-dt-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (41 commits)
  ARM: dts: add gpio-ranges property to iMX GPIO controllers
  ARM: dts: imx35: add iim module to imx35.dtsi
  ARM: dts: vf610-colibri: use of_graph dt nodes to describe the panel
  ARM: dts: ls1021a: Add of_graph dt nodes to describe the panel
  ARM: dts: imx53: add support for USB armory board
  devicetree: Add vendor prefix for Inverse Path
  ARM: dts: imx7s-warp: Add Bluetooth support
  ARM: dts: imx7s-warp: Add User Button support
  ARM: dts: imx7s-warp: Enable I2C2 device support
  ARM: dts: imx6ul-geam: Add Engicam IMX6UL GEA M6UL initial support
  ARM: dts: imx6ul iomuxc syscon is compatible to imx6q
  ARM: dts: imx7-colibri: add Audio support
  ARM: dts: imx7-colibri: add basic supply regulators
  ARM: dts: imx7-colibri: move SD-card to module level
  ARM: dts: imx6sx: Add GPU bindings
  ARM: dts: imx7s-warp: Let the codec control MCLK pinctrl
  ARM: dts: imx6ul-pico-hobbit: Use WDOG_B pin reset
  ARM: dts: imx6q-bx50v3: configure unused pca953x pins
  ARM: dts: imx6sx: document SION necessity of ENET1_REF_CLK1
  ARM: dts: imx7s-warp: Use WDOG_B pin reset
  ...
2016-09-13 17:42:20 +02:00
Bharat Kumar Gogada
9413d968f2 microblaze/PCI: Add multidomain support for procfs
We create a procfs directory for every PCI bus.  Previously, the directory
name was just the bus number, so using the same bus number in different
domains caused a kernel crash when we tried to create a duplicate
directory.

Make pci_proc_domain() return the domain number, so procfs directories for
buses in domain 0 are named with just the bus number, and directories for
buses in other domains include both the domain number and the bus number.

[bhelgaas: changelog]
Signed-off-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
2016-09-13 10:41:48 -05:00
Arnd Bergmann
971b4c6e1a Fix the ethernet issue on revision D of the RealView EB
Split the DTS files in per-revision variants
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Merge tag 'realview-dts-split' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/dt

Pull "RealView DTS file fixup and split" from Linus Walleij:

Fix the ethernet issue on revision D of the RealView EB
Split the DTS files in per-revision variants

* tag 'realview-dts-split' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
  ARM: dts: add RealView EB rev D A9 MPCore variant
  ARM: dts: split RealView EB 11MPCore variants
  ARM: dts: add device tree for the RealView EB Rev D
  ARM: dts: fix RealView EB SMSC ethernet version
2016-09-13 17:41:15 +02:00
Michael Ellerman
99c1790e5b net: Remove NO_IRQ from powerpc-only network drivers
We'd like to eventually remove NO_IRQ on powerpc, so remove usages of it
from powerpc-only drivers.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-13 11:40:51 -04:00
Arnd Bergmann
83a9660af6 ARM: tegra: Device tree changes for v4.9-rc1
Contains a couple of cleanups for Tegra114 device trees.
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Merge tag 'tegra-for-4.9-arm-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/dt

Pull "ARM: tegra: Device tree changes for v4.9-rc1" from Thierry Reding:

Contains a couple of cleanups for Tegra114 device trees.

* tag 'tegra-for-4.9-arm-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  ARM: tegra: Correct polarity for Tegra114 PMIC interrupt
  ARM: tegra: Fix Tegra114 USB compatible values
2016-09-13 17:40:17 +02:00