perf tests: Add daemon 'signal' command test

Add a test for the perf daemon 'signal' command. The test sends a signal
to configured sessions and verifies the perf data files were generated
accordingly.

  Committer testing:

  [root@five ~]# perf test daemon
  76: daemon operations                                               : Ok
  [root@five ~]# perf test -v daemon
  76: daemon operations                                               :
  --- start ---
  test child forked, pid 790017
  test daemon list
  test daemon reconfig
  test daemon stop
  test daemon signal
  signal 12 sent to session 'test [790268]'
  signal 12 sent to session 'test [790268]'
  test child finished with 0
  ---- end ----
  daemon operations: Ok
  [root@five ~]#

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: https://lore.kernel.org/r/20210208200908.1019149-23-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/tests/shell/daemon.sh b/tools/perf/tests/shell/daemon.sh
index 3b6b5aa..2e414f2 100755 (executable)
--- a/tools/perf/tests/shell/daemon.sh
+++ b/tools/perf/tests/shell/daemon.sh
@@ -348,10 +348,50 @@ EOF
        rm -f ${config}
 }
 
+test_signal()
+{
+       echo "test daemon signal"
+
+       local config=$(mktemp /tmp/perf.daemon.config.XXX)
+       local base=$(mktemp -d /tmp/perf.daemon.base.XXX)
+
+       # prepare config
+       cat <<EOF > ${config}
+[daemon]
+base=BASE
+
+[session-test]
+run = -e cpu-clock --switch-output
+EOF
+
+       sed -i -e "s|BASE|${base}|" ${config}
+
+       # start daemon
+       daemon_start ${config} test
+
+       # send 2 signals
+       perf daemon signal --config ${config} --session test
+       perf daemon signal --config ${config}
+
+       # stop daemon
+       daemon_exit ${base} ${config}
+
+       # count is 2 perf.data for signals and 1 for perf record finished
+       count=`ls ${base}/session-test/ | grep perf.data | wc -l`
+       if [ ${count} -ne 3 ]; then
+               error=1
+               echo "FAILED: perf data no generated"
+       fi
+
+       rm -rf ${base}
+       rm -f ${config}
+}
+
 error=0
 
 test_list
 test_reconfig
 test_stop
+test_signal
 
 exit ${error}