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Subject[PATCH 05/15] perf hists: Add more helpers for hist entry stat
Date
From: Namhyung Kim <namhyung.kim@lge.com>

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

Cc: Arun Sharma <asharma@fb.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/util/hist.c | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 3a37f8c5c297..9df0a503e159 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -130,6 +130,12 @@ void hists__output_recalc_col_len(struct hists *hists, int max_rows)
}
}

+static void hist_entry__add_period(struct he_stat *he_stat, u64 period)
+{
+ he_stat->period += period;
+ he_stat->nr_events += 1;
+}
+
static void hist_entry__add_cpumode_period(struct he_stat *he_stat,
unsigned int cpumode, u64 period)
{
@@ -151,6 +157,16 @@ static void hist_entry__add_cpumode_period(struct he_stat *he_stat,
}
}

+static void hist_entry__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 he_stat *he_stat)
{
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;
+ hist_entry__add_period(&he->stat, period);

/* If the map of an existing hist_entry has
* become out-of-date due to an exec() or
@@ -416,12 +431,7 @@ 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;
+ hist_entry__add_stat(&iter->stat, &he->stat);

if (symbol_conf.use_callchain) {
callchain_cursor_reset(&callchain_cursor);
--
1.7.11.4


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