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 <namhyung@kernel.org>
Cc: Arun Sharma <asharma@fb.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1349354994-17853-10-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 02476cb..277947a 100644 (file)
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -151,6 +151,22 @@ static void hist_entry__add_cpumode_period(struct hist_entry *he,
        }
 }
 
+static void he_stat__add_period(struct he_stat *he_stat, u64 period)
+{
+       he_stat->period         += period;
+       he_stat->nr_events      += 1;
+}
+
+static void he_stat__add_stat(struct he_stat *dest, struct he_stat *src)
+{
+       dest->period            += src->period;
+       dest->period_sys        += src->period_sys;
+       dest->period_us         += src->period_us;
+       dest->period_guest_sys  += src->period_guest_sys;
+       dest->period_guest_us   += src->period_guest_us;
+       dest->nr_events         += src->nr_events;
+}
+
 static void hist_entry__decay(struct hist_entry *he)
 {
        he->stat.period = (he->stat.period * 7) / 8;
@@ -270,8 +286,7 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
                cmp = hist_entry__cmp(entry, he);
 
                if (!cmp) {
-                       he->stat.period += period;
-                       ++he->stat.nr_events;
+                       he_stat__add_period(&he->stat, period);
 
                        /* If the map of an existing hist_entry has
                         * become out-of-date due to an exec() or
@@ -418,12 +433,7 @@ static bool hists__collapse_insert_entry(struct hists *hists __maybe_unused,
                cmp = hist_entry__collapse(iter, he);
 
                if (!cmp) {
-                       iter->stat.period               += he->stat.period;
-                       iter->stat.period_sys           += he->stat.period_sys;
-                       iter->stat.period_us            += he->stat.period_us;
-                       iter->stat.period_guest_sys     += he->stat.period_guest_sys;
-                       iter->stat.period_guest_us      += he->stat.period_guest_us;
-                       iter->stat.nr_events            += he->stat.nr_events;
+                       he_stat__add_stat(&iter->stat, &he->stat);
 
                        if (symbol_conf.use_callchain) {
                                callchain_cursor_reset(&callchain_cursor);