[PATCH V2 1/3] perf tool: Fix perf diff symble sort issue

[kan . liang]

From: Kan Liang <kan.liang@xxxxxxxxx>

This patch fixes a bug for perf diff.
Without mmap2, perf diff fails to find the symbol name. The default
symbol sort key doesn't work well.

Signed-off-by: Kan Liang <kan.liang@xxxxxxxxx>
---
 tools/perf/builtin-diff.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 25114c9..1ce425d 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -357,6 +357,7 @@ static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
 static struct perf_tool tool = {
 	.sample	= diff__process_sample_event,
 	.mmap	= perf_event__process_mmap,
+	.mmap2	= perf_event__process_mmap2,
 	.comm	= perf_event__process_comm,
 	.exit	= perf_event__process_exit,
 	.fork	= perf_event__process_fork,
-- 
1.8.3.2

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