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perf tools: Introduce pstack_peek()

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The pstack_peek() is to get the topmost entry without removing it.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1429838133-14001-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2015-04-24 10:15:32 +09:00
committed by Arnaldo Carvalho de Melo
parent ea7cd59233
commit c8539e3fc6
2 changed files with 8 additions and 0 deletions
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tools/perf/util/pstack.h
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@@ -10,5 +10,6 @@ bool pstack__empty(const struct pstack *pstack);
void pstack__remove(struct pstack *pstack, void *key);
void pstack__push(struct pstack *pstack, void *key);
void *pstack__pop(struct pstack *pstack);
void *pstack__peek(struct pstack *pstack);
#endif /* _PERF_PSTACK_ */