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perf evsel: Add has_callchain() helper to make code more compact/clear

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Its common to have the (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN),
so add an evsel__has_callchain(evsel) helper.

This will actually get more uses as we check that instead of
symbol_conf.use_callchain in places where that produces the same result
but makes this decision to be more fine grained, per evsel.

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: https://lkml.kernel.org/n/tip-145340oytbthatpfeaq1do18@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2018-05-28 16:00:29 -03:00
parent 9d0199cd2a
commit 27de9b2bd9
8 changed files with 16 additions and 16 deletions
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2
tools/perf/builtin-trace.c
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@@ -2491,7 +2491,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
* to override an explicitely set --max-stack global setting.
*/
evlist__for_each_entry(evlist, evsel) {
if ((evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) &&
if (evsel__has_callchain(evsel) &&
evsel->attr.sample_max_stack == 0)
evsel->attr.sample_max_stack = trace->max_stack;
}