linux-kernel - [PATCH 24/24] perf tests: Add daemon lock test

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Message-Id: <20210208200908.1019149-25-jolsa@kernel.org>
Date:   Mon,  8 Feb 2021 21:09:08 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        Alexei Budankov <abudankov@...wei.com>
Subject: [PATCH 24/24] perf tests: Add daemon lock test

Adding test for perf daemon lock ensuring only
one instance of daemon can run over one base
directory.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/tests/shell/daemon.sh | 38 ++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/tools/perf/tests/shell/daemon.sh b/tools/perf/tests/shell/daemon.sh
index 9fcb98768633..e5b824dd08d9 100755
--- a/tools/perf/tests/shell/daemon.sh
+++ b/tools/perf/tests/shell/daemon.sh
@@ -426,6 +426,43 @@ EOF
 	rm -f ${config}
 }
 
+test_lock()
+{
+	echo "test daemon lock"
+
+	local config=$(mktemp /tmp/perf.daemon.config.XXX)
+	local base=$(mktemp -d /tmp/perf.daemon.base.XXX)
+
+	# prepare config
+	cat <<EOF > ${config}
+[daemon]
+base=BASE
+
+[session-size]
+run = -e cpu-clock
+EOF
+
+	sed -i -e "s|BASE|${base}|" ${config}
+
+	# start daemon
+	daemon_start ${config} size
+
+	# start second daemon over the same config/base
+	failed=`perf daemon start --config ${config} 2>&1 | awk '{ print $1 }'`
+
+	# check that we failed properly
+	if [ ${failed} != "failed:" ]; then
+		error=1
+		echo "FAILED: daemon lock failed"
+	fi
+
+	# stop daemon
+	daemon_exit ${base} ${config}
+
+	rm -rf ${base}
+	rm -f ${config}
+}
+
 error=0
 
 test_list
@@ -433,5 +470,6 @@ test_reconfig
 test_stop
 test_signal
 test_ping
+test_lock
 
 exit ${error}
-- 
2.29.2