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perf tools: Add feature header record to pipe-mode

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Add header record types to pipe-mode, reusing the functions
used in file-mode and leveraging the new struct feat_fd.

For alignment, check that synthesized events don't exceed
pagesize.

Add the perf_event__synthesize_feature event call back to
process the new header records.

Before this patch:

  $ perf record -o - -e cycles sleep 1 | perf report --stdio --header
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.000 MB - ]
  ...

After this patch:
  $ perf record -o - -e cycles sleep 1 | perf report --stdio --header
  # ========
  # captured on: Mon May 22 16:33:43 2017
  # ========
  #
  # hostname : my_hostname
  # os release : 4.11.0-dbx-up_perf
  # perf version : 4.11.rc6.g6277c80
  # arch : x86_64
  # nrcpus online : 72
  # nrcpus avail : 72
  # cpudesc : Intel(R) Xeon(R) CPU E5-2696 v3 @ 2.30GHz
  # cpuid : GenuineIntel,6,63,2
  # total memory : 263457192 kB
  # cmdline : /root/perf record -o - -e cycles -c 100000 sleep 1
  # HEADER_CPU_TOPOLOGY info available, use -I to display
  # HEADER_NUMA_TOPOLOGY info available, use -I to display
  # pmu mappings: intel_bts = 6, uncore_imc_4 = 22, uncore_sbox_1 = 47, uncore_cbox_5 = 33, uncore_ha_0 = 16, uncore_cbox
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.000 MB - ]
  ...

Support added for the subcommands: report, inject, annotate and script.

Signed-off-by: David Carrillo-Cisneros <davidcc@google.com>
Acked-by: David Ahern <dsahern@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Turner <pjt@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Simon Que <sque@chromium.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20170718042549.145161-16-davidcc@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
David Carrillo-Cisneros
2017-07-17 21:25:48 -07:00
committed by Arnaldo Carvalho de Melo
parent 114f709e01
commit e9def1b2e7
12 changed files with 141 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
tools/perf/Documentation/perf.data-file-format.txt
View File

@@ -398,6 +398,11 @@ struct auxtrace_error_event {
char msg[MAX_AUXTRACE_ERROR_MSG];
};
PERF_RECORD_HEADER_FEATURE = 80,
Describes a header feature. These are records used in pipe-mode that
contain information that otherwise would be in perf.data file's header.
Event types
Define the event attributes with their IDs.
@@ -422,8 +427,9 @@ struct perf_pipe_file_header {
};
The information about attrs, data, and event_types is instead in the
synthesized events PERF_RECORD_ATTR, PERF_RECORD_HEADER_TRACING_DATA and
PERF_RECORD_HEADER_EVENT_TYPE that are generated by perf record in pipe-mode.
synthesized events PERF_RECORD_ATTR, PERF_RECORD_HEADER_TRACING_DATA,
PERF_RECORD_HEADER_EVENT_TYPE, and PERF_RECORD_HEADER_FEATURE
that are generated by perf record in pipe-mode.
References: