linux-kernel - [PATCH 1/2] perf report: apply --cpu filter before --switch-on/--switch-off

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Date:   Sat, 25 Jan 2020 19:10:57 +0300
From:   Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
To:     linux-kernel@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: [PATCH 1/2] perf report: apply --cpu filter before
 --switch-on/--switch-off

If report focus on particular cpus then event switch should see only them.
Perf script/trace/top already works in this way.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Fixes: ef4b1a539f4b ("perf report: Add --switch-on/--switch-off events")
---
 tools/perf/builtin-report.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index de988589d99b..f03120c641c0 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -258,6 +258,9 @@ static int process_sample_event(struct perf_tool *tool,
 		return 0;
 	}
 
+	if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
+		return 0;
+
 	if (evswitch__discard(&rep->evswitch, evsel))
 		return 0;
 
@@ -270,9 +273,6 @@ static int process_sample_event(struct perf_tool *tool,
 	if (symbol_conf.hide_unresolved && al.sym == NULL)
 		goto out_put;
 
-	if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
-		goto out_put;
-
 	if (sort__mode == SORT_MODE__BRANCH) {
 		/*
 		 * A non-synthesized event might not have a branch stack if