linux-toradex.git/tools/perf/builtin-record.c, branch v4.0.9

perf tools: Use perf_data_file__fd() consistently

2015-01-29T19:58:24+00:00

Do not reference file->fd directly since we want hide the
implementation details from outside for possible future changes.

Signed-off-by: Namhyung Kim 
Cc: Adrian Hunter 
Cc: Andi Kleen 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1422518843-25818-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf record: Show precise number of samples

2015-01-29T19:37:20+00:00

After perf record finishes, it prints file size and number of samples in
the file but this info is wrong since it assumes typical sample size of
24 bytes and divides file size by the value.

However as we post-process recorded samples for build-id, it can show
correct number like below.  If build-id post-processing is not requested
just omit the wrong number of samples.

  $ perf record noploop 1
    [ perf record: Woken up 1 times to write data ]
    [ perf record: Captured and wrote 0.159 MB perf.data (3989 samples) ]

  $ perf report --stdio -n
  # To display the perf.data header info, please use --header/--header-only options.
  #
  # Samples: 3K of event 'cycles'
  # Event count (approx.): 3771330663
  #
  # Overhead       Samples  Command  Shared Object     Symbol
  # ........  ............  .......  ................  ..........................
  #
      99.90%          3982  noploop  noploop           [.] main
       0.09%             1  noploop  ld-2.17.so        [.] _dl_check_map_versions
       0.01%             1  noploop  [kernel.vmlinux]  [k] setup_arg_pages
       0.00%             5  noploop  [kernel.vmlinux]  [k] intel_pmu_enable_all

Reported-by: Milian Wolff 
Signed-off-by: Namhyung Kim 
Reviewed-by: Jiri Olsa 
Cc: Adrian Hunter 
Cc: Andi Kleen 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1422518843-25818-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Do not use __perf_session__process_events() directly

2015-01-29T19:36:32+00:00

It's only used for perf record to process build-id because its file size
it's not fixed at this time due to remaining header features.

However data offset and size is available so that we can use the
perf_session__process_events() once we set the file size as the current
offset like for now.

Signed-off-by: Namhyung Kim 
Cc: Adrian Hunter 
Cc: Andi Kleen 
Cc: David Ahern 
Cc: Frederic Weisbecker 
Cc: Jiri Olsa 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1422518843-25818-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf record: Add new -I option to sample interrupted machine state

2014-11-16T10:42:02+00:00

Add -I/--intr-regs option to capture machine state registers at
interrupt.

Add the corresponding man page description

Signed-off-by: Stephane Eranian 
Signed-off-by: Peter Zijlstra (Intel) 
Link: http://lkml.kernel.org/r/1411559322-16548-6-git-send-email-eranian@google.com
Cc: cebbert.lkml@gmail.com
Cc: Adrian Hunter 
Cc: Anshuman Khandual 
Cc: Arnaldo Carvalho de Melo 
Cc: Linus Torvalds 
Cc: Masanari Iida 
Signed-off-by: Ingo Molnar

perf record: Do not save pathname in ./debug/.build-id directory for vmlinux

2014-11-05T13:14:08+00:00

When perf record finishes a session, it pre-processes samples in order
to write build-id info from DSOs that had samples.

During this process it'll call map__load() for the kernel map, and it
ends up calling dso__load_vmlinux_path() which replaces dso->long_name.

But this function checks kernel's build-id before searching vmlinux path
so it'll end up with a cryptic name, the pathname for the entry in the
~/.debug cache, which can be confusing to users.

This patch adds a flag to skip the build-id check during record, so
that it'll have the original vmlinux path for the kernel dso->long_name,
not the entry in the ~/.debug cache.

Before:
  # perf record -va sleep 3
  mmap size 528384B
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.196 MB perf.data (~8545 samples) ]
  Looking at the vmlinux_path (7 entries long)
  Using /home/namhyung/.debug/.build-id/f0/6e17aa50adf4d00b88925e03775de107611551 for symbols

After:
  # perf record -va sleep 3
  mmap size 528384B
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.193 MB perf.data (~8432 samples) ]
  Looking at the vmlinux_path (7 entries long)
  Using /lib/modules/3.16.4-1-ARCH/build/vmlinux for symbols

Signed-off-by: Namhyung Kim 
Cc: Adrian Hunter 
Cc: David Ahern 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/r/1415063674-17206-7-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Export usage string and option table of perf record

2014-10-29T12:32:47+00:00

Those are shared with other builtin commands like kvm, script.  So
make it accessable from them.  This is a preparation of later change
that limiting possible options.

Signed-off-by: Namhyung Kim 
Acked-by: Hemant Kumar 
Cc: Alexander Yarygin 
Cc: David Ahern 
Cc: Hemant Kumar 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Masami Hiramatsu 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1413990949-13953-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf evsel: No need to drag util/cgroup.h

2014-10-17T15:17:40+00:00

The only thing we need is a forward declaration for 'struct cgroup_sel',
that is inside 'struct perf_evsel'.

Include cgroup.h instead on the tools that support cgroups.

Cc: Adrian Hunter 
Cc: Borislav Petkov 
Cc: David Ahern 
Cc: Don Zickus 
Cc: Frederic Weisbecker 
Cc: Jean Pihet 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-b7kuymbgf0zxi5viyjjtu5hk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf callchain: Move the callchain_param extern to callchain.h

2014-10-14T20:32:51+00:00

It was lost in hist.h, move it to where it belongs, callchain.h, as
there are places that gets hist.h by means of evsel.h, and since evsel.h
is being untangled from hist.h...

Cc: Adrian Hunter 
Cc: Borislav Petkov 
Cc: David Ahern 
Cc: Don Zickus 
Cc: Frederic Weisbecker 
Cc: Jean Pihet 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-0rg7ji1jnbm6q6gj35j37jby@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Convert {record,top}.call-graph option to call-graph.record-mode

2014-09-26T15:43:53+00:00

So that it'll be passed to perf_callchain_config().

Reviewed-by: David Ahern 
Signed-off-by: Namhyung Kim 
Acked-by: Jiri Olsa 
Cc: David Ahern 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Milian Wolff 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1411434104-5307-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf callchain: Move some parser functions to callchain.c

2014-09-26T15:41:57+00:00

And rename record_callchain_parse() to parse_callchain_record_opt() in
accordance to parse_callchain_report_opt().

Reviewed-by: David Ahern 
Signed-off-by: Namhyung Kim 
Acked-by: Jiri Olsa 
Cc: David Ahern 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Milian Wolff 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1411434104-5307-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo