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perf callchain: Add callchain_cursor_snapshot() 

The callchain_cursor_snapshot() is for saving current status of the
callchain.  It'll be used to accumulate callchain information for each node.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arun Sharma <asharma@fb.com>
Tested-by: Rodrigo Campos <rodrigo@sdfg.com.ar>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1401335910-16832-9-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
This commit is contained in:
Namhyung Kim 2012-09-10 13:38:00 +09:00 committed by Jiri Olsa
parent b4d3c8bd86
commit be1f13e308
1 changed files with 9 additions and 0 deletions
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9
tools/perf/util/callchain.h
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@ -167,4 +167,13 @@ int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node *
extern const char record_callchain_help[]; extern const char record_callchain_help[];
int parse_callchain_report_opt(const char *arg); int parse_callchain_report_opt(const char *arg);
static inline void callchain_cursor_snapshot(struct callchain_cursor *dest,
struct callchain_cursor *src)
{
*dest = *src;
dest->first = src->curr;
dest->nr -= src->pos;
}
#endif /* __PERF_CALLCHAIN_H */ #endif /* __PERF_CALLCHAIN_H */