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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@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

authored by

Ian Rogers and committed by
Namhyung Kim b3d1dcd0 5c5f6fe3

+1 -1
+1 -1
tools/perf/tests/shell/kvm.sh
··· 118 118 skip "/dev/kvm not accessible" 119 119 fi 120 120 121 - if ! perf kvm stat record -a sleep 0.01 >/dev/null 2>&1; then 121 + if ! perf kvm stat record -o /dev/null -a sleep 0.01 >/dev/null 2>&1; then 122 122 skip "No permission to record kvm events" 123 123 fi 124 124