This is a note to let you know that I've just added the patch titled
perf report: Fix condition in sort__sym_cmp()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
perf-report-fix-condition-in-sort__sym_cmp.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 49a2a5ace6142ad85a4ee7f222671c57b03b7d77
Author: Namhyung Kim <namhyung@xxxxxxxxxx>
Date: Fri Jun 21 10:05:25 2024 -0700
perf report: Fix condition in sort__sym_cmp()
[ Upstream commit cb39d05e67dc24985ff9f5150e71040fa4d60ab8 ]
It's expected that both hist entries are in the same hists when
comparing two. But the current code in the function checks one without
dso sort key and other with the key. This would make the condition true
in any case.
I guess the intention of the original commit was to add '!' for the
right side too. But as it should be the same, let's just remove it.
Fixes: 69849fc5d2119 ("perf hists: Move sort__has_dso into struct perf_hpp_list")
Reviewed-by: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240621170528.608772-2-namhyung@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 66e11e6bb7197..a9a10cba8957e 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -256,7 +256,7 @@ sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
* comparing symbol address alone is not enough since it's a
* relative address within a dso.
*/
- if (!hists__has(left->hists, dso) || hists__has(right->hists, dso)) {
+ if (!hists__has(left->hists, dso)) {
ret = sort__dso_cmp(left, right);
if (ret != 0)
return ret;
