perf hist: Simplify the insertion of new hist_entry instances
And with that fix at least one bug:
The first hit for an entry, the one that calls malloc to create a new
instance in __perf_session__add_hist_entry, wasn't adding the count to
the per cpumode (PERF_RECORD_MISC_USER, etc) total variable.
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 4cce68f..613a5c4 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -25,17 +25,9 @@
static int perf_session__add_hist_entry(struct perf_session *self,
struct addr_location *al, u64 count)
{
- bool hit;
- struct hist_entry *he = __perf_session__add_hist_entry(&self->hists,
- al, NULL,
- count, &hit);
- if (he == NULL)
- return -ENOMEM;
-
- if (hit)
- __perf_session__add_count(he, al, count);
-
- return 0;
+ if (__perf_session__add_hist_entry(&self->hists, al, NULL, count) != NULL)
+ return 0;
+ return -ENOMEM;
}
static int diff__process_sample_event(event_t *event, struct perf_session *session)