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perf tools: Add perf data cache feature

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Storing CPU cache details under perf data. It's stored as new
HEADER_CACHE feature and it's displayed under header info with -I
option:

  $ perf report --header-only -I
  ...
  # CPU cache info:
  #  L1 Data                 32K [0-1]
  #  L1 Instruction          32K [0-1]
  #  L1 Data                 32K [2-3]
  #  L1 Instruction          32K [2-3]
  #  L2 Unified             256K [0-1]
  #  L2 Unified             256K [2-3]
  #  L3 Unified            4096K [0-3]
  ...

All distinct caches are stored/displayed.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20160216150143.GA7119@krava.brq.redhat.com
[ Fixed leak on process_caches(), s/cache_level/cpu_cache_level/g ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2016-02-16 16:01:43 +01:00
committed by Arnaldo Carvalho de Melo
parent dd629cc097
commit 720e98b5fa
4 changed files with 299 additions and 0 deletions
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1
tools/perf/util/header.h
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@@ -32,6 +32,7 @@ enum {
HEADER_GROUP_DESC,
HEADER_AUXTRACE,
HEADER_STAT,
HEADER_CACHE,
HEADER_LAST_FEATURE,
HEADER_FEAT_BITS = 256,
};