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.

Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20241216070244.14450-8-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/tests/shell/test_intel_pt.sh b/tools/perf/tests/shell/test_intel_pt.sh
index e6f0070975f664cb5cf58400b2022b0164d7b2c4..f3a9a040bacc687b03371f7970634b4b47b44795 100755 (executable)
--- 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