linux-kernel - [PATCH V15 7/7] perf intel-pt: Add a test for pause / resume

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Message-ID: <20241114101711.34987-8-adrian.hunter@intel.com>
Date: Thu, 14 Nov 2024 12:17:10 +0200
From: Adrian Hunter <adrian.hunter@...el.com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>
Cc: Jiri Olsa <jolsa@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	Leo Yan <leo.yan@....com>,
	linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org
Subject: [PATCH V15 7/7] perf intel-pt: Add a test for pause / resume

Add a simple sub-test to the "Miscellaneous Intel PT testing" test to
check pause / resume.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Acked-by: Ian Rogers <irogers@...gle.com>
Reviewed-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/tests/shell/test_intel_pt.sh | 28 +++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/tools/perf/tests/shell/test_intel_pt.sh b/tools/perf/tests/shell/test_intel_pt.sh
index e6f0070975f6..f3a9a040bacc 100755
--- a/tools/perf/tests/shell/test_intel_pt.sh
+++ b/tools/perf/tests/shell/test_intel_pt.sh
@@ -644,6 +644,33 @@ test_pipe()
 	return 0
 }
 
+test_pause_resume()
+{
+	echo "--- Test with pause / resume ---"
+	if ! perf_record_no_decode -o "${perfdatafile}" -e intel_pt/aux-action=start-paused/u uname ; then
+		echo "SKIP: pause / resume is not supported"
+		return 2
+	fi
+	if ! perf_record_no_bpf -o "${perfdatafile}" \
+			-e intel_pt/aux-action=start-paused/u \
+			-e instructions/period=50000,aux-action=resume,name=Resume/u \
+			-e instructions/period=100000,aux-action=pause,name=Pause/u uname  ; then
+		echo "perf record with pause / resume failed"
+		return 1
+	fi
+	if ! perf script -i "${perfdatafile}" --itrace=b -Fperiod,event | \
+			awk 'BEGIN {paused=1;branches=0}
+			     /Resume/ {paused=0}
+			     /branches/ {if (paused) exit 1;branches=1}
+			     /Pause/ {paused=1}
+			     END {if (!branches) exit 1}' ; then
+		echo "perf record with pause / resume failed"
+		return 1
+	fi
+	echo OK
+	return 0
+}
+
 count_result()
 {
 	if [ "$1" -eq 2 ] ; then
@@ -672,6 +699,7 @@ test_power_event			|| ret=$? ; count_result $ret ; ret=0
 test_no_tnt				|| ret=$? ; count_result $ret ; ret=0
 test_event_trace			|| ret=$? ; count_result $ret ; ret=0
 test_pipe				|| ret=$? ; count_result $ret ; ret=0
+test_pause_resume			|| ret=$? ; count_result $ret ; ret=0
 
 cleanup
 
-- 
2.43.0