From: Namhyung Kim <namhyung@kernel.org>
To: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung.kim@lge.com>,
LKML <linux-kernel@vger.kernel.org>, Jiri Olsa <jolsa@redhat.com>,
David Ahern <dsahern@gmail.com>
Subject: [RFC/PATCH 2/2] perf tools: Sort dso using pointers
Date: Tue, 15 Oct 2013 11:01:57 +0900 [thread overview]
Message-ID: <1381802517-18812-2-git-send-email-namhyung@kernel.org> (raw)
In-Reply-To: <1381802517-18812-1-git-send-email-namhyung@kernel.org>
From: Namhyung Kim <namhyung.kim@lge.com>
The dso's in a perf session are maintained machine-wide so same dso is
shared by hist entries. Thus just checking pointer should be enough
to comparing dso's.
It may change behavior of 'perf report -s dso' when there're two or
more dso's that have same basename - the dso's which have same name
used to merged to one unless -v option was given. But I don't think
it's a big problem. ;)
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/util/sort.c | 14 +-------------
1 file changed, 1 insertion(+), 13 deletions(-)
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 1f9821db9e77..70658a0834e3 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -114,20 +114,8 @@ static int64_t _sort__dso_cmp(struct map *map_l, struct map *map_r)
{
struct dso *dso_l = map_l ? map_l->dso : NULL;
struct dso *dso_r = map_r ? map_r->dso : NULL;
- const char *dso_name_l, *dso_name_r;
- if (!dso_l || !dso_r)
- return cmp_null(dso_l, dso_r);
-
- if (verbose) {
- dso_name_l = dso_l->long_name;
- dso_name_r = dso_r->long_name;
- } else {
- dso_name_l = dso_l->short_name;
- dso_name_r = dso_r->short_name;
- }
-
- return strcmp(dso_name_l, dso_name_r);
+ return (int64_t)(dso_l - dso_r);
}
static int64_t
--
1.7.11.7
next prev parent reply other threads:[~2013-10-15 2:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-15 2:01 [PATCH 1/2] perf tools: Compare dso's also when comparing symbols Namhyung Kim
2013-10-15 2:01 ` Namhyung Kim [this message]
2013-10-15 6:08 ` Ingo Molnar
2013-10-15 7:12 ` Namhyung Kim
2013-10-23 7:54 ` [tip:perf/core] perf tools: Compare dso' s " tip-bot for Namhyung Kim
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