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perf callchain: Add option to skip ignore symbol when printing callchains

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For tracepoint events, callchains always contain certain functions.
Sometimes it'd be better to skip those functions as they have no value.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20161124011114.7102-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2016-11-24 10:11:13 +09:00
committed by Arnaldo Carvalho de Melo
parent dbdebdc538
commit 2d9bbf6eb3
3 changed files with 9 additions and 2 deletions
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3
tools/perf/builtin-sched.c
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@@ -1876,7 +1876,8 @@ static void timehist_print_sample(struct perf_sched *sched,
sample__fprintf_sym(sample, al, 0,
EVSEL__PRINT_SYM | EVSEL__PRINT_ONELINE |
EVSEL__PRINT_CALLCHAIN_ARROW,
EVSEL__PRINT_CALLCHAIN_ARROW |
EVSEL__PRINT_SKIP_IGNORED,
&callchain_cursor, stdout);
out: