perf hists: Add more helpers for hist entry stat

Add and use he_stat__add_{period,stat} for calculating hist entry's
stat.  It will be used for accumulated stats later as well.

Signed-off-by: Namhyung Kim <[email protected]>
Cc: Arun Sharma <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions