linux-kernel - [PATCH v2 1/2] perf tests kvm: Avoid leaving perf.data.guest file around

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Message-ID: <20251204225522.648456-1-irogers@google.com>
Date: Thu,  4 Dec 2025 14:55:21 -0800
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
Subject: [PATCH v2 1/2] perf tests kvm: Avoid leaving perf.data.guest file around

Ensure the perf.data output when checking permissions is written to
/dev/null so that it isn't left in the directory the test is run.

Fixes: b58261584d2f ("perf test kvm: Add some basic perf kvm test coverage")
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/tests/shell/kvm.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/shell/kvm.sh b/tools/perf/tests/shell/kvm.sh
index 2fafde1a29cc..2a399b83fe80 100755
--- a/tools/perf/tests/shell/kvm.sh
+++ b/tools/perf/tests/shell/kvm.sh
@@ -118,7 +118,7 @@ setup_qemu() {
 		skip "/dev/kvm not accessible"
 	fi
 
-	if ! perf kvm stat record -a sleep 0.01 >/dev/null 2>&1; then
+	if ! perf kvm stat record -o /dev/null -a sleep 0.01 >/dev/null 2>&1; then
 		skip "No permission to record kvm events"
 	fi
 
-- 
2.52.0.223.gf5cc29aaa4-goog