Adding debugfs support into fs.c framework. It'll replace the debugfs
object functionality in following patches.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1441180605-24737-10-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

There's no need to export SYSFS_MAGIC PROC_SUPER_MAGIC in fs.h. Leave
them in the fs.c.

Link: http://lkml.kernel.org/n/tip-b2cd1bb7yvbazq5oua24oz18@git.kernel.orgSigned-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1441180605-24737-9-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

We're going to get rid of findfs.h in following patches, but we'll still
need these macros.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1441180605-24737-8-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Moving debugfs__strerror_open out of api/fs/debugfs.c, because it's not
debugfs specific. It'll be changed to consider tracefs mount as well in
following patches.

Renaming it into tracing_path__strerror_open_tp to fit into the
namespace. No functional change is intended.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Reviewed-by: Matt Fleming <matt.fleming@intel.com>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1441180605-24737-6-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Moving tracing_path interface into api/fs/tracing_path.c out of util.c.
It seems generic enough to be used by others, and I couldn't think of
better place.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Reviewed-by: Matt Fleming <matt.fleming@intel.com>
Reviewed-by: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1441180605-24737-5-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Renaming all functions touching tracing_path under same namespace. New
interface is:

  char tracing_path[];
  - tracing mount path

  char tracing_events_path[];
  - tracing mount/events path

  void tracing_path_set(const char *mountpoint);
  - setting directly tracing_path(_events), used by --debugfs-dir option

  const char *tracing_path_mount(void);
  - initial setup of tracing_(events)_path, called from perf.c
    mounts debugfs/tracefs if needed and possible

  char *get_tracing_file(const char *name);
  void put_tracing_file(char *file);
  - get/put tracing file path
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1441180605-24737-4-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

It's not used by any caller. We either detect the mountpoint or use
hardcoded one.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1441180605-24737-3-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Since 3b3eb044 running perf stat on a system without
backend-stalled-cycles spits out ugly warnings by default.

Since that is quite common, make the message a debug message only.

We know anyways that the counter wasn't read by the normal <unsupported>
output.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1441147966-14917-1-git-send-email-andi@firstfloor.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

This patch stores the cpu socket_id and core_id in a perf.data header,
and reads them into the perf_env struct when processing perf.data files.

The changes modifies the CPU_TOPOLOGY section, making sure it is
backward/forward compatible.

The patch checks the section size before reading the core and socket ids.

It never reads data crossing the section boundary.  An old perf binary
without this patch can also correctly read the perf.data from a new perf
with this patch.

Because the new info is added at the end of the cpu_topology section, an
old perf tool ignores the extra data.

Examples:

1. New perf with this patch read perf.data from an old perf without the
   patch:

  $ perf_new report -i perf_old.data --header-only -I
  ......
  # sibling threads : 33
  # sibling threads : 34
  # sibling threads : 35
  # Core ID and Socket ID information is not available
  # node0 meminfo  : total = 32823872 kB, free = 29315548 kB
  # node0 cpu list : 0-17,36-53
  ......

2. Old perf without the patch reads perf.data from a new perf with the
   patch:

  $ perf_old report -i perf_new.data --header-only -I
  ......
  # sibling threads : 33
  # sibling threads : 34
  # sibling threads : 35
  # node0 meminfo  : total = 32823872 kB, free = 29190932 kB
  # node0 cpu list : 0-17,36-53
  ......

3. New perf read new perf.data:

  $ perf_new report -i perf_new.data --header-only -I
  ......
  # sibling threads : 33
  # sibling threads : 34
  # sibling threads : 35
  # CPU 0: Core ID 0, Socket ID 0
  # CPU 1: Core ID 1, Socket ID 0
  ......
  # CPU 61: Core ID 10, Socket ID 1
  # CPU 62: Core ID 11, Socket ID 1
  # CPU 63: Core ID 16, Socket ID 1
  # node0 meminfo  : total = 32823872 kB, free = 29190932 kB
  # node0 cpu list : 0-17,36-53
Signed-off-by: Kan Liang <kan.liang@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1441115893-22006-2-git-send-email-kan.liang@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

This patch moves the code which reads core_id and socket_id into
separate functions.
Signed-off-by: Kan Liang <kan.liang@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1441115893-22006-1-git-send-email-kan.liang@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Support helper function __get_dynamic_array_len() in libtraceevent, this
function is used accompany with __print_array() or __print_hex(), but
currently it is not an available function in the function list of
process_function().

The total allocated length of the dynamic array is embedded in the top
half of __data_loc_##item field. This patch adds new arg type
PRINT_DYNAMIC_ARRAY_LEN to return the length to eval_num_arg(),
Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1440822125-52691-32-git-send-email-wangnan0@huawei.comSigned-off-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

This patch copies filter.h from include/linux/kernel.h to
tools/include/linux/filter.h to enable other libraries to use macros in it,
like libbpf which will be introduced by further patches.

Currently, the filter.h copy only contains the useful macros needed by
libbpf for not introducing too much dependence.

tools/perf/MANIFEST is also updated for 'make perf-*-src-pkg'.

One change:
  The 'imm' field of BPF_EMIT_CALL becomes ((FUNC) - BPF_FUNC_unspec) to
  suit user space code generator.
Signed-off-by: He Kuang <hekuang@huawei.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1440822125-52691-22-git-send-email-wangnan0@huawei.comSigned-off-by: Wang Nan <wangnan0@huawei.com>
[ Removed stylistic changes, so that a diff to the original file gets reduced ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

When profiling the kernel with the 'srcfile' sort key it's common to
"get stuck" in include. For example a lot of code uses current or other
inlines, so they get accounted to some random include file. This is not
very useful as a high level categorization.

For example just profiling the idle loop usually shows mostly inlines,
so you never see the actual cpuidle file.

This patch changes the 'srcfile' sort key to always unwind the inline
stack using BFD/DWARF. So we always account to the base function that
called the inline.

In a few cases include is still shown (for example for MSR accesses),
but that is because they get inlining expanded as part of assigning to a
global function pointer. For the majority it works fine though.

v2: Use simpler while loop. Add maximum iteration count.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1441133239-31254-1-git-send-email-andi@firstfloor.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

  - Fix link time error with sample_reg_masks on non-x86. (Stephane Eranian)

  - Fix potential array out of bounds access. (Wang Nan)

  - Fix Intel PT instruction decoder dependency problem. (Wang Nan)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

This patch makes perf compile on non x86 platforms by defining a weak
symbol for sample_reg_masks[] in util/perf_regs.c.

The patch also moves the REG() and REG_END() macros into the
util/per_regs.h header file. The macros are renamed to
SMPL_REG/SMPL_REG_END to avoid clashes with other header files.
Signed-off-by: Stephane Eranian <eranian@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1441099814-26783-1-git-send-email-eranian@google.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

I hit following building error randomly:

    ...
  /bin/sh: /path/to/kernel/buildperf/util/intel-pt-decoder/inat-tables.c: No such file or directory
    ...
    LINK     /path/to/kernel/buildperf/plugin_mac80211.so
    LINK     /path/to/kernel/buildperf/plugin_kmem.so
    LINK     /path/to/kernel/buildperf/plugin_xen.so
    LINK     /path/to/kernel/buildperf/plugin_hrtimer.so
  In file included from util/intel-pt-decoder/intel-pt-insn-decoder.c:25:0:
  util/intel-pt-decoder/inat.c:24:25: fatal error: inat-tables.c: No such file or directory
   #include "inat-tables.c"
                           ^
  compilation terminated.
  make[4]: *** [/path/to/kernel/buildperf/util/intel-pt-decoder/intel-pt-insn-decoder.o] Error 1
  make[4]: *** Waiting for unfinished jobs....
    LINK     /path/to/kernel/buildperf/plugin_function.so

This is caused by tools/perf/util/intel-pt-decoder/Build that, it tries
to generate $(OUTPUT)util/intel-pt-decoder/inat-tables.c atomatically
but forget to ensure the existance of $(OUTPUT)util/intel-pt-decoder
directory.

This patch fixes it by adding $(call rule_mkdir) like other similar rules.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1441087005-107540-1-git-send-email-wangnan0@huawei.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

There is a problem in the dwarf-regs.c files for sh, sparc and x86 where
it is possible to make an out-of-bounds array access when searching for
register names.

This patch fixes it by replacing '<=' to '<', so when register (number
== XXX_MAX_REGS), get_arch_regstr() will return NULL.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Reviewed-by: Matt Fleming <matt@console-pimps.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@huawei.com
Link: http://lkml.kernel.org/r/1441078184-105038-1-git-send-email-wangnan0@huawei.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

User visible changes:

  - Add ability to specify to select which registers to record,
    to reduce the size of perf.data files, and also allow printing
    the registers in 'perf script': (Stephane Eranian)

      # perf record --intr-regs=AX,SP usleep 1
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 0.016 MB perf.data (8 samples) ]
      # perf script -F ip,sym,iregs | tail -5
       ffffffff8105f42a native_write_msr_safe   AX:0xf    SP:0xffff8802629c3c00
       ffffffff8105f42a native_write_msr_safe   AX:0xf    SP:0xffff8802629c3c00
       ffffffff81761ac0 _raw_spin_lock   AX:0xffff8801bfcf8020    SP:0xffff8802629c3ce8
       ffffffff81202bf8 __vma_adjust_trans_huge   AX:0x7ffc75200000    SP:0xffff8802629c3b30
       ffffffff8122b089 dput   AX:0x101    SP:0xffff8802629c3c78
      #

Infrastructure changes:

  - Open event on evsel cpus and threads. (Kan Liang)

  - Add new bpf API to get name from a BPF object. (Wang Nan)

Build fixes:

  - Fix build on powerpc broken by pt/bts. (Adrian Hunter)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

Pull NOHZ updates from Ingo Molnar:
 "The main changes, mostly written by Frederic Weisbecker, include:

   - Fix some jiffies based cputime assumptions.  (No real harm because
     the concerned code isn't used by full dynticks.)

   - Simplify jiffies <-> usecs conversions.  Remove dead code.

   - Remove early hacks on nohz full code that avoided messing up idle
     nohz internals.  Now nohz integrates well full and idle and such
     hack have become needless.

   - Restart nohz full tick from irq exit.  (A simplification and a
     preparation for future optimization on scheduler kick to nohz
     full)

   - Code cleanups.

   - Tile driver isolation enhancement on top of nohz.  (Chris Metcalf)"

* 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  nohz: Remove useless argument on tick_nohz_task_switch()
  nohz: Move tick_nohz_restart_sched_tick() above its users
  nohz: Restart nohz full tick from irq exit
  nohz: Remove idle task special case
  nohz: Prevent tilegx network driver interrupts
  alpha: Fix jiffies based cputime assumption
  apm32: Fix cputime == jiffies assumption
  jiffies: Remove HZ > USEC_PER_SEC special case

Pull scheduler fix from Ingo Molnar:
 "This is a leftover scheduler fix from the v4.2 cycle"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Fix cpu_active_mask/cpu_online_mask race

Pull scheduler updates from Ingo Molnar:
 "The biggest change in this cycle is the rewrite of the main SMP load
  balancing metric: the CPU load/utilization.  The main goal was to make
  the metric more precise and more representative - see the changelog of
  this commit for the gory details:

    9d89c257 ("sched/fair: Rewrite runnable load and utilization average tracking")

  It is done in a way that significantly reduces complexity of the code:

    5 files changed, 249 insertions(+), 494 deletions(-)

  and the performance testing results are encouraging.  Nevertheless we
  need to keep an eye on potential regressions, since this potentially
  affects every SMP workload in existence.

  This work comes from Yuyang Du.

  Other changes:

   - SCHED_DL updates.  (Andrea Parri)

   - Simplify architecture callbacks by removing finish_arch_switch().
     (Peter Zijlstra et al)

   - cputime accounting: guarantee stime + utime == rtime.  (Peter
     Zijlstra)

   - optimize idle CPU wakeups some more - inspired by Facebook server
     loads.  (Mike Galbraith)

   - stop_machine fixes and updates.  (Oleg Nesterov)

   - Introduce the 'trace_sched_waking' tracepoint.  (Peter Zijlstra)

   - sched/numa tweaks.  (Srikar Dronamraju)

   - misc fixes and small cleanups"

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
  sched/deadline: Fix comment in enqueue_task_dl()
  sched/deadline: Fix comment in push_dl_tasks()
  sched: Change the sched_class::set_cpus_allowed() calling context
  sched: Make sched_class::set_cpus_allowed() unconditional
  sched: Fix a race between __kthread_bind() and sched_setaffinity()
  sched: Ensure a task has a non-normalized vruntime when returning back to CFS
  sched/numa: Fix NUMA_DIRECT topology identification
  tile: Reorganize _switch_to()
  sched, sparc32: Update scheduler comments in copy_thread()
  sched: Remove finish_arch_switch()
  sched, tile: Remove finish_arch_switch
  sched, sh: Fold finish_arch_switch() into switch_to()
  sched, score: Remove finish_arch_switch()
  sched, avr32: Remove finish_arch_switch()
  sched, MIPS: Get rid of finish_arch_switch()
  sched, arm: Remove finish_arch_switch()
  sched/fair: Clean up load average references
  sched/fair: Provide runnable_load_avg back to cfs_rq
  sched/fair: Remove task and group entity load when they are dead
  sched/fair: Init cfs_rq's sched_entity load average
  ...

Pull RAS updates from Ingo Molnar:
 "MCE handling updates, but also some generic drivers/edac/ changes to
  better organize the Kconfig space"

* 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ras: Move AMD MCE injector to arch/x86/ras/
  x86/mce: Add a wrapper around mce_log() for injection
  x86/mce: Rename rcu_dereference_check_mce() to mce_log_get_idx_check()
  RAS: Add a menuconfig option with descriptive text
  x86/mce: Reenable CMCI banks when swiching back to interrupt mode
  x86/mce: Clear Local MCE opt-in before kexec
  x86/mce: Remove unused function declarations
  x86/mce: Kill drain_mcelog_buffer()
  x86/mce: Avoid potential deadlock due to printk() in MCE context
  x86/mce: Remove the MCE ring for Action Optional errors
  x86/mce: Don't use percpu workqueues
  x86/mce: Provide a lockless memory pool to save error records
  x86/mce: Reuse one of the u16 padding fields in 'struct mce'

Pull perf updates from Ingo Molnar:
 "Main perf kernel side changes:

   - uprobes updates/fixes.  (Oleg Nesterov)

   - Add PERF_RECORD_SWITCH to indicate context switches and use it in
     tooling.  (Adrian Hunter)

   - Support BPF programs attached to uprobes and first steps for BPF
     tooling support.  (Wang Nan)

   - x86 generic x86 MSR-to-perf PMU driver.  (Andy Lutomirski)

   - x86 Intel PT, LBR and BTS updates.  (Alexander Shishkin)

   - x86 Intel Skylake support.  (Andi Kleen)

   - x86 Intel Knights Landing (KNL) RAPL support.  (Dasaratharaman
     Chandramouli)

   - x86 Intel Broadwell-DE uncore support.  (Kan Liang)

   - x86 hw breakpoints robustization (Andy Lutomirski)

  Main perf tooling side changes:

   - Support Intel PT in several tools, enabling the use of the
     processor trace feature introduced in Intel Broadwell processors:
     (Adrian Hunter)

       # dmesg | grep Performance
       # [0.188477] Performance Events: PEBS fmt2+, 16-deep LBR, Broadwell events, full-width counters, Intel PMU driver.
       # perf record -e intel_pt//u -a sleep 1
       [ perf record: Woken up 1 times to write data ]
       [ perf record: Captured and wrote 0.216 MB perf.data ]
       # perf script # then navigate in the tool output to some area, like this one:
       184 1030 dl_main (/usr/lib64/ld-2.17.so) => 7f21ba661440 dl_main (/usr/lib64/ld-2.17.so)
       185 1457 dl_main (/usr/lib64/ld-2.17.so) => 7f21ba669f10 _dl_new_object (/usr/lib64/ld-2.17.so)
       186 9f37 _dl_new_object (/usr/lib64/ld-2.17.so) => 7f21ba677b90 strlen (/usr/lib64/ld-2.17.so)
       187 7ba3 strlen (/usr/lib64/ld-2.17.so) => 7f21ba677c75 strlen (/usr/lib64/ld-2.17.so)
       188 7c78 strlen (/usr/lib64/ld-2.17.so) => 7f21ba669f3c _dl_new_object (/usr/lib64/ld-2.17.so)
       189 9f8a _dl_new_object (/usr/lib64/ld-2.17.so) => 7f21ba65fab0 calloc@plt (/usr/lib64/ld-2.17.so)
       190 fab0 calloc@plt (/usr/lib64/ld-2.17.so) => 7f21ba675e70 calloc (/usr/lib64/ld-2.17.so)
       191 5e87 calloc (/usr/lib64/ld-2.17.so) => 7f21ba65fa90 malloc@plt (/usr/lib64/ld-2.17.so)
       192 fa90 malloc@plt (/usr/lib64/ld-2.17.so) => 7f21ba675e60 malloc (/usr/lib64/ld-2.17.so)
       193 5e68 malloc (/usr/lib64/ld-2.17.so) => 7f21ba65fa80 __libc_memalign@plt (/usr/lib64/ld-2.17.so)
       194 fa80 __libc_memalign@plt (/usr/lib64/ld-2.17.so) => 7f21ba675d50 __libc_memalign (/usr/lib64/ld-2.17.so)
       195 5d63 __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba675e20 __libc_memalign (/usr/lib64/ld-2.17.so)
       196 5e40 __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba675d73 __libc_memalign (/usr/lib64/ld-2.17.so)
       197 5d97 __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba675e18 __libc_memalign (/usr/lib64/ld-2.17.so)
       198 5e1e __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba675df9 __libc_memalign (/usr/lib64/ld-2.17.so)
       199 5e10 __libc_memalign (/usr/lib64/ld-2.17.so) => 7f21ba669f8f _dl_new_object (/usr/lib64/ld-2.17.so)
       200 9fc2 _dl_new_object (/usr/lib64/ld-2.17.so) =>  7f21ba678e70 memcpy (/usr/lib64/ld-2.17.so)
       201 8e8c memcpy (/usr/lib64/ld-2.17.so) => 7f21ba678ea0 memcpy (/usr/lib64/ld-2.17.so)

   - Add support for using several Intel PT features (CYC, MTC packets),
     the relevant documentation was updated in:
         tools/perf/Documentation/intel-pt.txt
     briefly describing those packets, its purposes, how to configure
     them in the event config terms and relevant external documentation
     for further reading.  (Adrian Hunter)

   - Introduce support for probing at an absolute address, for user and
     kernel 'perf probe's, useful when one have the symbol maps on a
     developer machine but not on an embedded system.  (Wang Nan)

   - Add Intel BTS support, with a call-graph script to show it and PT
     in use in a GUI using 'perf script' python scripting with
     postgresql and Qt.  (Adrian Hunter)

   - Allow selecting the type of callchains per event, including
     disabling callchains in all but one entry in an event list, to save
     space, and also to ask for the callchains collected in one event to
     be used in other events.  (Kan Liang)

   - Beautify more syscall arguments in 'perf trace': (Arnaldo Carvalho
     de Melo)
       * A bunch more translate file/pathnames from pointers to strings.
       * Convert numbers to strings for the 'keyctl' syscall 'option'
         arg.
       * Add missing 'clockid' entries.

   - Introduce 'srcfile' sort key: (Andi Kleen)

       # perf record -F 10000 usleep 1
       # perf report --stdio --dsos '[kernel.vmlinux]' -s srcfile
       <SNIP>
       # Overhead  Source File
          26.49%  copy_page_64.S
           5.49%  signal.c
           0.51%  msr.h
       #

     It can be combined with other fields, for instance, experiment with
     '-s srcfile,symbol'.

     There are some oddities in some distros and with some specific
     DSOs, being investigated, so your mileage may vary.

   - Support per-event 'freq' term: (Namhyung Kim)

       $ perf record -e 'cpu/instructions,freq=1234/',cycles -c 1000 sleep 1
       $ perf evlist -F
       cpu/instructions,freq=1234/: sample_freq=1234
       cycles: sample_period=1000
       $

   - Deref sys_enter pointer args with contents from probe:vfs_getname,
     showing pathnames instead of pointers in many syscalls in 'perf
     trace'.  (Arnaldo Carvalho de Melo)

   - Stop collecting /proc/kallsyms in perf.data files, saving about
     4.5MB on a typical x86-64 system, use the the symbol resolution
     routines used in all the other tools (report, top, etc) now that we
     can ask libtraceevent to use perf's symbol resolution code.
     (Arnaldo Carvalho de Melo)

   - Allow filtering out of perf's PID via 'perf record --exclude-perf'.
     (Wang Nan)

   - 'perf trace' now supports syscall groups, like strace, i.e:

       $ trace -e file touch file

     Will expand 'file' into multiple, file related, syscalls.  More
     work needed to add extra groups for other syscall groups, and also
     to complement what was added for the 'file' group, included as a
     proof of concept.  (Arnaldo Carvalho de Melo)

   - Add lock_pi stresser to 'perf bench futex', to test the kernel code
     related to FUTEX_(UN)LOCK_PI.  (Davidlohr Bueso)

   - Let user have timestamps with per-thread recording in 'perf record'
     (Adrian Hunter)

   - ... and tons of other changes, see the shortlog and the Git log for
     details"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (240 commits)
  perf evlist: Add backpointer for perf_env to evlist
  perf tools: Rename perf_session_env to perf_env
  perf tools: Do not change lib/api/fs/debugfs directly
  perf tools: Add tracing_path and remove unneeded functions
  perf buildid: Introduce sysfs/filename__sprintf_build_id
  perf evsel: Add a backpointer to the evlist a evsel is in
  perf trace: Add header with copyright and background info
  perf scripts python: Add new compaction-times script
  perf stat: Get correct cpu id for print_aggr
  tools lib traceeveent: Allow for negative numbers in print format
  perf script: Add --[no-]-demangle/--[no-]-demangle-kernel
  tracing/uprobes: Do not print '0x (null)' when offset is 0
  perf probe: Support probing at absolute address
  perf probe: Fix error reported when offset without function
  perf probe: Fix list result when address is zero
  perf probe: Fix list result when symbol can't be found
  tools build: Allow duplicate objects in the object list
  perf tools: Remove export.h from MANIFEST
  perf probe: Prevent segfault when reading probe point with absolute address
  perf tools: Update Intel PT documentation
  ...

Pull x86/kasan changes from Ingo Molnar:
 "These are two KASAN changes that factor out (and generalize) x86
  specific KASAN code from x86 to mm"

* 'mm-kasan-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/kasan, mm: Introduce generic kasan_populate_zero_shadow()
  x86/kasan: Define KASAN_SHADOW_OFFSET per architecture

Pull liblockdep fixes from Ingo Molnar:
 "Three liblockdep fixes left over from the v4.2 cycle"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/liblockdep: Use the rbtree header provided by common tools headers
  tools/liblockdep: Correct macro for WARN
  tools: Restore export.h

Pull inlining tuning from Ingo Molnar:
 "A handful of inlining optimizations inspired by x86 work but
  applicable in general"

* 'core-types-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  jiffies: Force inlining of {m,u}msecs_to_jiffies()
  x86/hweight: Force inlining of __arch_hweight{32,64}()
  linux/bitmap: Force inlining of bitmap weight functions

Pull RCU updates from Ingo Molnar:
 "The main RCU changes in this cycle are:

   - the combination of tree geometry-initialization simplifications and
     OS-jitter-reduction changes to expedited grace periods.  These two
     are stacked due to the large number of conflicts that would
     otherwise result.

   - privatize smp_mb__after_unlock_lock().

     This commit moves the definition of smp_mb__after_unlock_lock() to
     kernel/rcu/tree.h, in recognition of the fact that RCU is the only
     thing using this, that nothing else is likely to use it, and that
     it is likely to go away completely.

   - documentation updates.

   - torture-test updates.

   - misc fixes"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
  rcu,locking: Privatize smp_mb__after_unlock_lock()
  rcu: Silence lockdep false positive for expedited grace periods
  rcu: Don't disable CPU hotplug during OOM notifiers
  scripts: Make checkpatch.pl warn on expedited RCU grace periods
  rcu: Update MAINTAINERS entry
  rcu: Clarify CONFIG_RCU_EQS_DEBUG help text
  rcu: Fix backwards RCU_LOCKDEP_WARN() in synchronize_rcu_tasks()
  rcu: Rename rcu_lockdep_assert() to RCU_LOCKDEP_WARN()
  rcu: Make rcu_is_watching() really notrace
  cpu: Wait for RCU grace periods concurrently
  rcu: Create a synchronize_rcu_mult()
  rcu: Fix obsolete priority-boosting comment
  rcu: Use WRITE_ONCE in RCU_INIT_POINTER
  rcu: Hide RCU_NOCB_CPU behind RCU_EXPERT
  rcu: Add RCU-sched flavors of get-state and cond-sync
  rcu: Add fastpath bypassing funnel locking
  rcu: Rename RCU_GP_DONE_FQS to RCU_GP_DOING_FQS
  rcu: Pull out wait_event*() condition into helper function
  documentation: Describe new expedited stall warnings
  rcu: Add stall warnings to synchronize_sched_expedited()
  ...

Pull crypto updates from Herbert Xu:
 "Here is the crypto update for 4.3:

  API:

   - the AEAD interface transition is now complete.
   - add top-level skcipher interface.

  Drivers:

   - x86-64 acceleration for chacha20/poly1305.
   - add sunxi-ss Allwinner Security System crypto accelerator.
   - add RSA algorithm to qat driver.
   - add SRIOV support to qat driver.
   - add LS1021A support to caam.
   - add i.MX6 support to caam"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (163 commits)
  crypto: algif_aead - fix for multiple operations on AF_ALG sockets
  crypto: qat - enable legacy VFs
  MPI: Fix mpi_read_buffer
  crypto: qat - silence a static checker warning
  crypto: vmx - Fixing opcode issue
  crypto: caam - Use the preferred style for memory allocations
  crypto: caam - Propagate the real error code in caam_probe
  crypto: caam - Fix the error handling in caam_probe
  crypto: caam - fix writing to JQCR_MS when using service interface
  crypto: hash - Add AHASH_REQUEST_ON_STACK
  crypto: testmgr - Use new skcipher interface
  crypto: skcipher - Add top-level skcipher interface
  crypto: cmac - allow usage in FIPS mode
  crypto: sahara - Use dmam_alloc_coherent
  crypto: caam - Add support for LS1021A
  crypto: qat - Don't move data inside output buffer
  crypto: vmx - Fixing GHASH Key issue on little endian
  crypto: vmx - Fixing AES-CTR counter bug
  crypto: null - Add missing Kconfig tristate for NULL2
  crypto: nx - Add forward declaration for struct crypto_aead
  ...

Pull clk updates from Michael Turquette:
 "The clk framework changes for 4.3 are mostly updates to existing
  drivers and the addition of new clock drivers.  Stephen Boyd has also
  done a lot of subsystem-wide driver clean-ups (thanks!).  There are
  also fixes to the framework core and changes to better split clock
  provider drivers from clock consumer drivers"

* tag 'clk-for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (227 commits)
  clk: s5pv210: add missing call to samsung_clk_of_add_provider()
  clk: pistachio: correct critical clock list
  clk: pistachio: Fix PLL rate calculation in integer mode
  clk: pistachio: Fix override of clk-pll settings from boot loader
  clk: pistachio: Fix 32bit integer overflows
  clk: tegra: Fix some static checker problems
  clk: qcom: Fix MSM8916 prng clock enable bit
  clk: Add missing header for 'bool' definition to clk-conf.h
  drivers/clk: appropriate __init annotation for const data
  clk: rockchip: register pll mux before pll itself
  clk: add bindings for the Ux500 clocks
  clk/ARM: move Ux500 PRCC bases to the device tree
  clk: remove duplicated code with __clk_set_parent_after
  clk: Convert __clk_get_name(hw->clk) to clk_hw_get_name(hw)
  clk: Constify clk_hw argument to provider APIs
  clk: Hi6220: add stub clock driver
  dt-bindings: clk: Hi6220: Document stub clock driver
  dt-bindings: arm: Hi6220: add doc for SRAM controller
  clk: atlas7: fix pll missed divide NR in fraction mode
  clk: atlas7: fix bit field and its root clk for coresight_tpiu
  ...

Pull PCI updates from Bjorn Helgaas:
 "PCI changes for the v4.3 merge window:

  Enumeration:
   - Allocate ATS struct during enumeration (Bjorn Helgaas)
   - Embed ATS info directly into struct pci_dev (Bjorn Helgaas)
   - Reduce size of ATS structure elements (Bjorn Helgaas)
   - Stop caching ATS Invalidate Queue Depth (Bjorn Helgaas)
   - iommu/vt-d: Cache PCI ATS state and Invalidate Queue Depth (Bjorn Helgaas)
   - Move MPS configuration check to pci_configure_device() (Bjorn Helgaas)
   - Set MPS to match upstream bridge (Keith Busch)
   - ARM/PCI: Set MPS before pci_bus_add_devices() (Murali Karicheri)
   - Add pci_scan_root_bus_msi() (Lorenzo Pieralisi)
   - ARM/PCI, designware, xilinx: Use pci_scan_root_bus_msi() (Lorenzo Pieralisi)

  Resource management:
   - Call pci_read_bridge_bases() from core instead of arch code (Lorenzo Pieralisi)

  PCI device hotplug:
   - pciehp: Remove unused interrupt events (Bjorn Helgaas)
   - pciehp: Remove ignored MRL sensor interrupt events (Bjorn Helgaas)
   - pciehp: Handle invalid data when reading from non-existent devices (Jarod Wilson)
   - pciehp: Simplify pcie_poll_cmd() (Yijing Wang)
   - Use "slot" and "pci_slot" for struct hotplug_slot and struct pci_slot (Yijing Wang)
   - Protect pci_bus->slots with pci_slot_mutex, not pci_bus_sem (Yijing Wang)
   - Hold pci_slot_mutex while searching bus->slots list (Yijing Wang)

  Power management:
   - Disable async suspend/resume for JMicron multi-function SATA/AHCI (Zhang Rui)

  Virtualization:
   - Add ACS quirks for Intel I219-LM/V (Alex Williamson)
   - Restore ACS configuration as part of pci_restore_state() (Alexander Duyck)

  MSI:
   - Add pcibios_alloc_irq() and pcibios_free_irq() (Jiang Liu)
   - x86: Implement pcibios_alloc_irq() and pcibios_free_irq() (Jiang Liu)
   - Add helpers to manage pci_dev->irq and pci_dev->irq_managed (Jiang Liu)
   - Free legacy IRQ when enabling MSI/MSI-X (Jiang Liu)
   - ARM/PCI: Remove msi_controller from struct pci_sys_data (Lorenzo Pieralisi)
   - Remove unused pcibios_msi_controller() hook (Lorenzo Pieralisi)

  Generic host bridge driver:
   - Remove dependency on ARM-specific struct hw_pci (Jayachandran C)
   - Build setup-irq.o for arm64 (Jayachandran C)
   - Add arm64 support (Jayachandran C)

  APM X-Gene host bridge driver:
   - Add APM X-Gene PCIe 64-bit prefetchable window (Duc Dang)
   - Add support for a 64-bit prefetchable memory window (Duc Dang)
   - Drop owner assignment from platform_driver (Krzysztof Kozlowski)

  Broadcom iProc host bridge driver:
   - Allow BCMA bus driver to be built as module (Hauke Mehrtens)
   - Delete unnecessary checks before phy calls (Markus Elfring)
   - Add arm64 support (Ray Jui)

  Synopsys DesignWare host bridge driver:
   - Don't complain missing *config* reg space if va_cfg0 is set (Murali Karicheri)

  TI DRA7xx host bridge driver:
   - Disable pm_runtime on get_sync failure (Kishon Vijay Abraham I)
   - Add PM support (Kishon Vijay Abraham I)
   - Clear MSE bit during suspend so clocks will idle (Kishon Vijay Abraham I)
   - Add support to make GPIO drive PERST# line (Kishon Vijay Abraham I)

  Xilinx AXI host bridge driver:
   - Check for MSI interrupt flag before handling as INTx (Russell Joyce)

  Miscellaneous:
   - Fix Intersil/Techwell TW686[4589] AV capture class code (Krzysztof Hałasa)
   - Use PCI_CLASS_SERIAL_USB instead of bare number (Bjorn Helgaas)
   - Fix generic NCR 53c810 class code quirk (Bjorn Helgaas)
   - Fix TI816X class code quirk (Bjorn Helgaas)
   - Remove unused "pci_probe" flags (Bjorn Helgaas)
   - Host bridge driver code simplifications (Fabio Estevam)
   - Add dev_flags bit to access VPD through function 0 (Mark Rustad)
   - Add VPD function 0 quirk for Intel Ethernet devices (Mark Rustad)
   - Kill off set_irq_flags() usage (Rob Herring)
   - Remove Intel Cherrytrail D3 delays (Srinidhi Kasagar)
   - Clean up pci_find_capability() (Wei Yang)"

* tag 'pci-v4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (72 commits)
  PCI: Disable async suspend/resume for JMicron multi-function SATA/AHCI
  PCI: Set MPS to match upstream bridge
  PCI: Move MPS configuration check to pci_configure_device()
  PCI: Drop references acquired by of_parse_phandle()
  PCI/MSI: Remove unused pcibios_msi_controller() hook
  ARM/PCI: Remove msi_controller from struct pci_sys_data
  ARM/PCI, designware, xilinx: Use pci_scan_root_bus_msi()
  PCI: Add pci_scan_root_bus_msi()
  ARM/PCI: Replace panic with WARN messages on failures
  PCI: generic: Add arm64 support
  PCI: Build setup-irq.o for arm64
  PCI: generic: Remove dependency on ARM-specific struct hw_pci
  PCI: imx6: Simplify a trivial if-return sequence
  PCI: spear: Use BUG_ON() instead of condition followed by BUG()
  PCI: dra7xx: Remove unneeded use of IS_ERR_VALUE()
  PCI: Remove pci_ats_enabled()
  PCI: Stop caching ATS Invalidate Queue Depth
  PCI: Move ATS declarations to linux/pci.h so they're all together
  PCI: Clean up ATS error handling
  PCI: Use pci_physfn() rather than looking up physfn by hand
  ...

Pull LED updates from Jacek Anaszewski:
 "In this merge window we'd like to announce a change on the list of LED
  subsystem maintainers - Bryan Wu decided to step back and handed over
  the maintainership to me (Jacek Anaszewski), which entailed an update
  of LED subsystem git tree URL.

  Besides the changes in MAINTAINERS we have:

   - optimizations and improvements to existing LED class drivers

   - improvements to the common LEDs DT documentation

   - modifications of kirkwood-* dts files, to be in sync with patches
     for leds-ns2 driver, that move LEDs mode mapping outside of the
     driver"

* tag 'leds_for_4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: Export OF module alias information in missing drivers
  leds:lp55xx: use the private data instead of updating I2C device platform data
  leds: syscon: Correct check for syscon_node_to_regmap() errors
  leds: leds-fsg: Use devm_led_classdev_register
  MAINTAINERS: Change LED subsystem git tree URL
  leds/led-class: Add missing put_device()
  ARM: Kirkwood: add modes-map property to ns2-leds nodes
  leds: tlc591xx: Remove redundant I2C_FUNC_SMBUS_BYTE_DATA functionality check
  leds: leds-ns2: depends on MACH_ARMADA_370
  leds: leds-ns2: handle can_sleep GPIOs
  leds: leds-ns2: move LED modes mapping outside of the driver
  leds: lp8860: Constify reg_default tables
  leds: Drop owner assignment from i2c_driver
  leds: Allow compile test of LEDS_AAT1290 and LEDS_KTD2692 if !GPIOLIB
  leds: Allow compile test of GPIO consumers if !GPIOLIB
  DT: leds: Improve description of flash LEDs related properties

Pull spi updates from Mark Brown:
 "A few core tweaks this time together with the usual collection of
  driver specific updates and fixes plus a larger than average selection
  of new device support:

   - fix DMA mapping of unaligned vmalloc() buffers

   - statistics tracking transfer volumes exposed via sysfs

   - new drivers for Freescale MPC5125, Intel Sunrise Point, Mediatek
     SoCs, and Netlogic XLP SoCs"

* tag 'spi-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (66 commits)
  spi: sh-msiof: Fix FIFO size to 64 word from 256 word
  spi: fsl-(e)spi: Fix checking return value of devm_ioremap_resource
  spi: Add DT bindings documentation for Netlogic XLP SPI controller
  spi/xlp: SPI controller driver for Netlogic XLP SoCs
  spi: fsl-espi: add runtime PM
  spi: fsl-(e)spi: simplify cleanup code
  spi: fsl-(e)spi: migrate to using devm_ functions to simplify cleanup
  spi: mediatek: fix SPI_CMD_PAUSE_IE macro error
  spi: check bits_per_word in spi_setup
  spi: mediatek: replace *_time name
  spi: mediatek: add PM clk_prepare_enable fail flow
  spi: mediatek: replace int with u32, delete TAB and define MTK_SPI_PAUSE_INT_STATUS marco
  spi: mediatek: add linux/io.h include file
  spi/bcm63xx-hsspi: add support for dual spi read/write
  spi: dw: Allow interface drivers to limit data I/O to word sizes
  dt: snps,dw-apb-ssi: Document new I/O data register width property
  spi: Fall back to master maximum speed if no slave speed specified
  spi: mediatek: use BIT() to instead of SPI_CMD_*_OFFSET
  spi: medaitek: revise quirks compatibility style
  spi: mediatek: fix spi incorrect endian usage
  ...

Pull regulator updates from Mark Brown:
 "The biggest changes in the core this time around have been some
  refactorings that move us towards being able to drop the list of
  regulators maintained by the core and instead just use the driver
  model list maintained for the class devices for regulators which will
  make the code smaller and avoid some potential bugs.

  Otherwise another fairly quiet release for the regulator API,
  highlights include:

   - a new API for setting voltages based on a minimum, target, maximum
     triplet

   - support for continuous voltage ranges rather than tables of
     explicit steps in the PWM regulator, requiring less explicit
     configuration

   - new driver support for Dialog DA9215, Maxim 77843, Mediatek MT6311
     and Qualcomm RPM"

* tag 'regulator-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (70 commits)
  regulator: mt6311: fix platform_no_drv_owner.cocci warnings
  regulator: ltc3589: Remove unnecessary MODULE_ALIAS()
  regulator: ad5398: Remove unnecessary MODULE_ALIAS()
  regulator: pfuze100: Remove unnecessary MODULE_ALIAS()
  regulator: core: use debug level print in regulator_check_drms
  regulator: lp872x: handle error case
  regulator: lp872x: use the private data instead of updating I2C device platform data
  regulator: isl9305: Export OF module alias information
  regulators: max77693: register driver earlier to avoid deferred probe
  regulator: qcom_smd: Set n_voltages for pm8941_lnldo
  regulator: core: Use IS_ERR_OR_NULL()
  regulator: core: Define regulator_set_voltage_triplet()
  regulator: Regulator driver for the Qualcomm RPM
  regulator: pbias: Fix broken pbias disable functionality
  regulator: core: Spelling fix
  regulator: core: Use class device list for regulator_list in late init
  regulator: core: Move more deallocation into class unregister
  regulator: core: Reduce rdev locking region when releasing regulator
  Input: Remove the max77843 haptic driver
  Input: max77693: Add support for Maxim 77843
  ...

Pull documentation updates from Jonathan Corbet:
 "There's been a fair amount going on in the docs tree this time around,
  including:

   - Support for reproducible document builds, from Ben Hutchings and
     company.

   - The ability to automatically generate cross-reference links within
     a single DocBook book and embedded descriptions for large
     structures.  From Danilo Cesar Lemes de Paula.

   - A new document on how to add a system call from David Drysdale.

   - Chameleon bus documentation from Johannes Thumshirn.

  ...plus the usual collection of improvements, typo fixes, and more"

* tag 'docs-for-linus' of git://git.lwn.net/linux-2.6: (39 commits)
  Documentation, add kernel-parameters.txt entry for dis_ucode_ldr
  Documentation/x86: Rename IRQSTACKSIZE to IRQ_STACK_SIZE
  Documentation/Intel-IOMMU.txt: Modify definition of DRHD
  docs: update HOWTO for 3.x -> 4.x versioning
  kernel-doc: ignore unneeded attribute information
  scripts/kernel-doc: Adding cross-reference links to html documentation.
  DocBook: Fix non-determinstic installation of duplicate man pages
  Documentation: minor typo fix in mailbox.txt
  Documentation: describe how to add a system call
  doc: Add more workqueue functions to the documentation
  ARM: keystone: add documentation for SoCs and EVMs
  scripts/kernel-doc Allow struct arguments documentation in struct body
  SubmittingPatches: remove stray quote character
  Revert "DocBook: Avoid building man pages repeatedly and inconsistently"
  Documentation: Minor changes to men-chameleon-bus.txt
  Doc: fix trivial typo in SubmittingPatches
  MAINTAINERS: Direct Documentation/DocBook/media properly
  Documentation: installed man pages don't need to be executable
  fix Evolution submenu name in email-clients.txt
  Documentation: Add MCB documentation
  ...

Merge tag 'hwmon-for-linus-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "Notable changes:

   - added support for LTM4675, LTC3886, LTC2980, LTM2987, LTC2975,
     LTC3887, LTC3882, MAX20751, ADM1293, and ADM1294 to PMBus drivers
   - added support for IT8732F to it87 driver
   - added support for AMD Carrizo to fam15h_power driver
   - added support for various new attributes to nct7802 driver
   - added support for F81866 and F71868 to f71882fg driver"

* tag 'hwmon-for-linus-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (45 commits)
  hwmon: (fam15h_power) Add ratio of Tsample to the PTSC period
  hwmon: (fam15h_power) Add documentation for new processors support
  hwmon: (fam15h_power) Update running_avg_capture bit field to 28
  hwmon: (fam15h_power) Rename fam15h_power_is_internal_node0 function
  hwmon: (fam15h_power) Add support for AMD Carrizo
  hwmon: (ltc2978) Add support for LTM4675
  hwmon: (ltc2978) Add polling for chips requiring it
  hwmon: (pmbus) Enable PEC if the controller supports it
  hwmon: (pmbus) Use BIT macro
  hwmon: (ltc2978) Add support for LTC3886
  hwmon: (ltc2978) Add support for LTC2980 and LTM2987
  hwmon: (ltc2978) Add missing chip IDs for LTC2978 and LTC3882
  hwmon: (ltc2978) Use correct ID mask to detect all chips
  hwmon: (ltc2978) Introduce helper functions for min and max values
  hwmon: (ltc2978) Introduce feature flags
  hwmon: (pmbus) Convert command register definitions to enum
  hwmon: (ltc2978) Add support for LTC2975
  hwmon: (ltc2978) Add support for LTC3887
  hwmon: (ltc2978) Add additional chip IDs for LTM4676 and LTM4676A
  hwmon: (ltc2978) Add support for LTC3882
  ...

Pull power supply and reset changes from Sebastian Reichel:
 - new reset driver for ZTE SoCs
 - add support for sama5d3 reset handling
 - overhaul of twl4030 charger driver
 - misc fixes and cleanups

* tag 'for-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (35 commits)
  bq2415x_charger: Allow to load and use driver even if notify device is not registered yet
  twl4030_charger: fix compile error when TWL4030_MADC not available.
  power: bq24190_charger: Fix charge type sysfs property
  power: Allow compile test of GPIO consumers if !GPIOLIB
  power: Export I2C module alias information in missing drivers
  twl4030_charger: Increase current carefully while watching voltage.
  twl4030_charger: add ac/mode to match usb/mode
  twl4030_charger: add software controlled linear charging mode.
  twl4030_charger: enable manual enable/disable of usb charging.
  twl4030_charger: allow max_current to be managed via sysfs.
  twl4030_charger: distinguish between USB current and 'AC' current
  twl4030_charger: allow fine control of charger current.
  twl4030_charger: split uA calculation into a function.
  twl4030_charger: trust phy to determine when USB power is available.
  twl4030_charger: correctly handle -EPROBE_DEFER from devm_usb_get_phy_by_node
  twl4030_charger: convert to module_platform_driver instead of ..._probe.
  twl4030_charger: use runtime_pm to keep usb phy active while charging.
  rx51-battery: Set name to rx51-battery
  MAINTAINERS: AVS is not maintained via power supply tree
  power: olpc_battery: clean up eeprom read function
  ...

Pull s390 updates from Martin Schwidefsky:
 "The big one is support for fake NUMA, splitting a really large machine
  in more manageable piece improves performance in some cases, e.g. for
  a KVM host.

  The FICON Link Incident handling has been improved, this helps the
  operator to identify degraded or non-operational FICON connections.

  The save and restore of floating point and vector registers has been
  overhauled to allow the future use of vector registers in the kernel.

  A few small enhancement, magic sys-requests for the vt220 console via
  SCLP, some more assembler code has been converted to C, the PCI error
  handling is improved.

  And the usual cleanup and bug fixing"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (59 commits)
  s390/jump_label: Use %*ph to print small buffers
  s390/sclp_vt220: support magic sysrequests
  s390/ctrlchar: improve handling of magic sysrequests
  s390/numa: remove superfluous ARCH_WANT defines
  s390/3270: redraw screen on unsolicited device end
  s390/dcssblk: correct out of bounds array indexes
  s390/mm: simplify page table alloc/free code
  s390/pci: move debug messages to debugfs
  s390/nmi: initialize control register 0 earlier
  s390/zcrypt: use msleep() instead of mdelay()
  s390/hmcdrv: fix interrupt registration
  s390/setup: fix novx parameter
  s390/uaccess: remove uaccess_primary kernel parameter
  s390: remove unneeded sizeof(void *) comparisons
  s390/facilities: remove transactional-execution bits
  s390/numa: re-add DIE sched_domain_topology_level
  s390/dasd: enhance CUIR scope detection
  s390/dasd: fix failing path verification
  s390/vdso: emit a GNU hash
  s390/numa: make core to node mapping data dynamic
  ...

Pull xtensa updates from Chris Zankel:
 "Xtensa fixes and improvements for 4.3:

   - reimplement DMA API using common helpers
   - implement counting and sampling perf events using hardware perf
     counters
   - add fake NMI support for hardware perf counters
   - fix THREADPTR register reloading on return to userspace
   - keep exception/interrupt stack continuous for debugger
   - improve vmlinux.lds.S post-processing"

* tag 'xtensa-20150830' of git://github.com/czankel/xtensa-linux:
  xtensa: improve vmlinux.lds.S sed post-processing
  xtensa: drop unused irq_err_count
  xtensa: implement fake NMI
  xtensa: don't touch EXC_TABLE_FIXUP in _switch_to
  xtensa: fix kernel register spilling
  xtensa: reorganize irq flags tracing
  perf tools: xtensa: add DWARF register names
  xtensa: implement counting and sampling perf events
  xtensa: count software page fault perf events
  xtensa: add profiling IRQ type to xtensa_irq_map
  xtensa: select PERF_USE_VMALLOC for cache-aliasing configurations
  xtensa: move oprofile stack tracing to stacktrace.c
  xtensa: keep exception/interrupt stack continuous
  xtensa: clean up Kconfig dependencies for custom cores
  xtensa: reimplement DMA API using common helpers
  xtensa: fix threadptr reload on return to userspace
  xtensa: ISS: add missing va_end into split_if_spec

Pull alpha update from Matt Turner:
 "A single patch for alpha, one that enables ARCH_USE_CMPXCHG_LOCKREF
  and offers around an 8% performance improvement on a little benchmark
  that you wrote"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha:
  alpha: select CONFIG_ARCH_USE_CMPXCHG_LOCKREF.

Pull m68k updates from Geert Uytterhoeven.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/bootinfo: Use kmemdup rather than duplicating its implementation
  m68k/defconfig: Update defconfigs for v4.2-rc1
  m68k/defconfig: Disable experimental CONFIG_DM_CACHE