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21 Commits

Author SHA1 Message Date
Kim Phillips
d1f7b0234e perf annotate: Fix AArch64 comment char 
The commit 0fcb1da4ab "perf annotate: AArch64 support" blindly copied
the comment character from the original:

            https://lkml.org/lkml/2016/5/19/461

whereas that same commit shows objdump output utilizing the C++ style
"//" as the comment delimeter.  Since '/' doesn't occur elsewhere in
objdump output, we retain the single character check, but fix it to be
'/'.

Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Chris Riyder <chris.ryder@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: 0fcb1da4ab ("perf annotate: AArch64 support")
Link: http://lkml.kernel.org/r/20170503131356.be88f977094fb3fa0f49b99d@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-05-04 10:03:00 -03:00
Arnaldo Carvalho de Melo
7a8ef4c4b5 perf tools: Remove string.h, unistd.h and sys/stat.h from util.h 
Not needed in this header, added to the places that need FILE,
putchar(), access() and a few other prototypes.

Link: http://lkml.kernel.org/n/tip-xxtdsl6nsna82j7puwbdjqhs@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-04-24 13:43:33 -03:00
Arnaldo Carvalho de Melo
a43783aeec perf tools: Include errno.h where needed 
Removing it from util.h, part of an effort to disentangle the includes
hell, that makes changes to util.h or something included by it to cause
a complete rebuild of the tools.

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>
Link: http://lkml.kernel.org/n/tip-ztrjy52q1rqcchuy3rubfgt2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-04-19 13:01:51 -03:00
Arnaldo Carvalho de Melo
aa8cc2f6b5 perf tools: Replace STR() calls with __stringify() 
Both do the same thing, the later is the one we get from
linux/stringify.h, i.e. we now use the same function name/practice as
the kernel sources.

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>
Link: http://lkml.kernel.org/n/tip-w2sxa5o4bfx7fjrd5mu4zmke@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-04-19 13:01:47 -03:00
Arnaldo Carvalho de Melo
4c38c8f5d2 perf unwind arm64: Add missing errno.h header 
Since it uses EINVAL unconditionally, it needs to also unconditionally
include errno.h.

Detected when recent changes made errno.h not be included by chance when
tools/perf/arch/arm64/util/unwind-libunwind.c gets included by
tools/perf/util/libunwind/arm64.c.

Putting this changeset just before that change so that we don't lose
bisectability on arm64.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: 8ab596afb9 ("perf tools ARM64: Wire up perf_regs and unwind support")
Link: http://lkml.kernel.org/n/tip-60zjev2o1locp5ivod38epa2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-04-19 13:01:41 -03:00
He Kuang
3bb53c9f12 perf tools arm64: Add support for generating bpf prologue 
Since HAVE_KPROBES can be enabled in arm64, this patch introduces
regs_query_register_offset() to convert register name to offset for
arm64, so the BPF prologue feature is ready to use.

Signed-off-by: He Kuang <hekuang@huawei.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bintian Wang <bintian.wang@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20170207073412.26983-1-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-02-08 08:55:01 -03:00
He Kuang
1b29dfbba1 perf probe: Fix wrong register name for arm64 
The register name of arm64 architecture is x0-x31 not r0-r31, this patch
changes this typo.

Before this patch:

  # perf probe --definition 'sys_write count'
  p:probe/sys_write _text+1502872 count=%r2:s64

  # echo 'p:probe/sys_write _text+1502872 count=%r2:s64' > \
    /sys/kernel/debug/tracing/kprobe_events
  Parse error at argument[0]. (-22)

After this patch:

  # perf probe --definition 'sys_write count'
  p:probe/sys_write _text+1502872 count=%x2:s64

  # echo 'p:probe/sys_write _text+1502872 count=%x2:s64' > \
    /sys/kernel/debug/tracing/kprobe_events
  # echo 1 >/sys/kernel/debug/tracing/events/probe/enable
  # cat /sys/kernel/debug/tracing/trace
  ...
  sh-422   [000] d... 650.495930: sys_write: (SyS_write+0x0/0xc8) count=22
  sh-422   [000] d... 651.102389: sys_write: (SyS_write+0x0/0xc8) count=26
  sh-422   [000] d... 651.358653: sys_write: (SyS_write+0x0/0xc8) count=86

Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bintian Wang <bintian.wang@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20170124103015.1936-2-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2017-01-26 11:42:43 -03:00
Kim Phillips
0fcb1da4ab perf annotate: AArch64 support 
This is a regex converted version from the original:

	https://lkml.org/lkml/2016/5/19/461

Add basic support to recognise AArch64 assembly. This allows perf to
identify AArch64 instructions that branch to other parts within the
same function, thereby properly annotating them.

Rebased onto new cross-arch annotation bits:

	https://lkml.org/lkml/2016/11/25/546

Sample output:

security_file_permission  vmlinux
  5.80 │    ← ret                                                  ▒
       │70:   ldr    w0, [x21,#68]                                 ▒
  4.44 │    ↓ tbnz   d0                                            ▒
       │      mov    w0, #0x24                       // #36        ▒
  1.37 │      ands   w0, w22, w0                                   ▒
       │    ↑ b.eq   60                                            ▒
  1.37 │    ↓ tbnz   e4                                            ▒
       │      mov    w19, #0x20000                   // #131072    ▒
  1.02 │    ↓ tbz    ec                                            ▒
       │90:┌─→ldr    x3, [x21,#24]                                 ▒
  1.37 │   │  add    x21, x21, #0x10                               ▒
       │   │  mov    w2, w19                                       ▒
  1.02 │   │  mov    x0, x21                                       ▒
       │   │  mov    x1, x3                                        ▒
  1.71 │   │  ldr    x20, [x3,#48]                                 ▒
       │   │→ bl     __fsnotify_parent                             ▒
  0.68 │   │↑ cbnz   60                                            ▒
       │   │  mov    x2, x21                                       ▒
  1.37 │   │  mov    w1, w19                                       ▒
       │   │  mov    x0, x20                                       ▒
  0.68 │   │  mov    w5, #0x0                        // #0         ▒
       │   │  mov    x4, #0x0                        // #0         ▒
  1.71 │   │  mov    w3, #0x1                        // #1         ▒
       │   │→ bl     fsnotify                                      ▒
  1.37 │   │↑ b      60                                            ▒
       │d0:│  mov    w0, #0x0                        // #0         ▒
       │   │  ldp    x19, x20, [sp,#16]                            ▒
       │   │  ldp    x21, x22, [sp,#32]                            ▒
       │   │  ldp    x29, x30, [sp],#48                            ▒
       │   │← ret                                                  ▒
       │e4:│  mov    w19, #0x10000                   // #65536     ▒
       │   └──b      90                                            ◆
       │ec:   brk    #0x800                                        ▒
Press 'h' for help on key bindings

Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Signed-off-by: Chris Ryder <chris.ryder@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/r/20161130092344.012e18e3e623bea395162f95@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-12-01 13:03:19 -03:00
Mathieu Poirier
a818c563ae perf tools: Add coresight etm PMU record capabilities 
Coresight ETMs are IP blocks used to perform HW assisted tracing on a
CPU core.  This patch introduce the required auxiliary API functions
allowing the perf core to interact with a tracer.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1474041004-13956-4-git-send-email-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-09-22 12:19:40 -03:00
Mathieu Poirier
7e21b0d579 perf tools: Make coresight PMU listable 
Adding the required mechanic allowing 'perf list pmu' to discover
coresight ETM/PTM tracers.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1474041004-13956-3-git-send-email-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-09-22 12:19:35 -03:00
Masami Hiramatsu
293d5b4394 perf probe: Support probing on offline cross-arch binary 
Support probing on offline cross-architecture binary by adding getting
the target machine arch from ELF and choose correct register string for
the machine.

Here is an example:
  -----
  $ perf probe --vmlinux=./vmlinux-arm --definition 'do_sys_open $params'
  p:probe/do_sys_open do_sys_open+0 dfd=%r5:s32 filename=%r1:u32 flags=%r6:s32 mode=%r3:u16
  -----

Here, we can get probe/do_sys_open from above and append it to to the target
machine's tracing/kprobe_events file in the tracefs mountput, usually
/sys/kernel/debug/tracing/kprobe_events (or /sys/kernel/tracing/kprobe_events).

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/147214229717.23638.6440579792548044658.stgit@devbox
[ Add definition for EM_AARCH64 to fix the build on at least centos 6, debian 7 & ubuntu 12.04.5 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-09-01 12:41:09 -03:00
He Kuang
057fbfb25c perf callchain: Support aarch64 cross-platform 
Support aarch64 cross platform callchain unwind.

Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1464924803-22214-15-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-06-07 15:13:35 -03:00
He Kuang
9d8e14d306 perf unwind: Separate local/remote libunwind config 
CONFIG_LIBUNWIND/NO_LIBUNWIND are changed to CONFIG_LOCAL_LIBUNWIND/
NO_LOCAL_LIBUNWIND for retaining local unwind features. The new
CONFIG_LIBUNWIND stands for either local or remote or both unwind are
supported, and NO_LIBUNWIND means that neither local nor remote unwind
is supported.

LIBUNWIND_LIBS is eliminated in LDFLAGS if local libunwind is not
supported.

Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1464924803-22214-7-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-06-07 12:08:52 -03:00
Jiri Olsa
e12b202f8f perf jitdump: Build only on supported archs 
Build jitdump only on architectures defined in util/genelf.h file, to avoid
breaking the build on such arches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Davidlohr Bueso <dbueso@suse.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Mel Gorman <mgorman@suse.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20160310164113.GA11357@krava.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2016-03-10 16:33:19 -03:00
Wang Nan
3237f28188 perf tools: Add ARM64 perf_regs_load to support libunwind and enable testing 
Newest libunwind does support ARM64, and perf is able to utilize it
also.

This patch enables the perf test dwarf unwind for arm64.

 Test result:
  # ./perf test unwind
  25: Test dwarf unwind                                      : Ok

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Link: http://lkml.kernel.org/r/1427461681-72971-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-05-29 12:43:40 -03:00
Jiri Olsa
7db2161814 perf build: Add arch arm64 objects building 
Move the arm64 arch objects building under build framework to be
included in the libperf build object.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Cc: Alexis Berlemont <alexis.berlemont@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ptqfz1op92yrtccjiww7h1v5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-02-12 13:13:22 -03:00
Jiri Olsa
5e8c0fb6a9 perf build: Add arch x86 objects building 
Move the x86 arch objects building under build framework to be included
in the libperf build object.

Adding also arch/$(ARCH)/Build files for the rest of the archs. The
reason for this is that in arch/Build we now do:

  +libperf-y += $(ARCH)/

which would make the build to fail on other architectures, because the
build framework requires 'Build' file in nested directories and this
patch adds it only for x86.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Cc: Alexis Berlemont <alexis.berlemont@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-5enob06z07m7ew6nzzdmp3n2@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2015-02-12 13:12:01 -03:00
Will Deacon
660d13296b perf tools: Fix build breakage on arm64 targets 
Attempting to build the perf tool for an arm64 target results in the
following failure:

  arch/arm64/util/unwind-libunwind.c: In function 'libunwind__arch_reg_id':
  arch/arm64/util/unwind-libunwind.c:77:3: error: implicit declaration of function 'pr_err'
     pr_err("unwind: invalid reg id %d\n", regnum);
     ^
  arch/arm64/util/unwind-libunwind.c:77:3: error: nested extern declaration of 'pr_err'

This is due to commit 84f5d36f48 ("perf tools: Move pr_* debug macros
into debug object") moving the pr_* macros into a new header file, but
failing to update architectures other than x86.

This patch adds the missing include, and fixes the build again.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1412076432-22045-1-git-send-email-will.deacon@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2014-10-01 14:44:17 -03:00
Mark Salter
7d885749b6 perf tools: Fix arm64 build error 
I'm seeing the following build error on arm64:

  In file included from util/event.c:3:0:
  util/event.h:95:17: error: 'PERF_REGS_MAX' undeclared here (not in a function)
    u64 cache_regs[PERF_REGS_MAX];
                 ^

This patch adds a PERF_REGS_MAX definition for arm64.

Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Jean Pihet <jean.pihet@linaro.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1406325766-8085-1-git-send-email-msalter@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2014-07-30 12:37:55 -03:00
Jean Pihet
21a8b756b8 perf tools: Consolidate types.h for ARM and ARM64 
Prevents a build breakage since commit d944c4eebc
'tools: Consolidate types.h'

Signed-off-by: Jean Pihet <jean.pihet@linaro.org>
Link: http://lkml.kernel.org/r/1400229672-16104-1-git-send-email-jean.pihet@linaro.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
 2014-05-16 11:38:57 +02:00
Jean Pihet
8ab596afb9 perf tools ARM64: Wire up perf_regs and unwind support 
This patch hooks in the perf_regs and libunwind code for ARM64.
The tools/perf/arch/arm64 is created; it contains the arch specific
code for DWARF unwinding.

Signed-off-by: Jean Pihet <jean.pihet@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/r/1398688353-3737-1-git-send-email-jean.pihet@linaro.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
 2014-04-29 15:31:19 +02:00