Add a new test case to record sideband events for all CPUs when tracing
selected CPUs
Test result:
# ./perf test list 2>&1 | grep 'perf record sideband tests'
95: perf record sideband tests
# ./perf test 95
95: perf record sideband tests : Ok
Signed-off-by: Yang Jihong <[email protected]>
---
tools/perf/tests/shell/record_sideband.sh | 58 +++++++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100755 tools/perf/tests/shell/record_sideband.sh
diff --git a/tools/perf/tests/shell/record_sideband.sh b/tools/perf/tests/shell/record_sideband.sh
new file mode 100755
index 000000000000..5024a7ce0c51
--- /dev/null
+++ b/tools/perf/tests/shell/record_sideband.sh
@@ -0,0 +1,58 @@
+#!/bin/sh
+# perf record sideband tests
+# SPDX-License-Identifier: GPL-2.0
+
+set -e
+
+err=0
+perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
+
+cleanup()
+{
+ rm -rf ${perfdata}
+ trap - EXIT TERM INT
+}
+
+trap_cleanup()
+{
+ cleanup
+ exit 1
+}
+trap trap_cleanup EXIT TERM INT
+
+can_cpu_wide()
+{
+ if ! perf record -o ${perfdata} -BN --no-bpf-event -C $1 true 2>&1 >/dev/null
+ then
+ echo "record sideband test [Skipped cannot record cpu$1]"
+ err=2
+ fi
+
+ rm -f ${perfdata}
+ return $err
+}
+
+test_system_wide_tracking()
+{
+ # Need CPU 0 and CPU 1
+ can_cpu_wide 0 || return 0
+ can_cpu_wide 1 || return 0
+
+ # Record on CPU 0 a task running on CPU 1
+ perf record -BN --no-bpf-event -o ${perfdata} -C 0 -- taskset --cpu-list 1 true
+
+ # Should get MMAP events from CPU 1
+ mmap_cnt=`perf script -i ${perfdata} --show-mmap-events -C 1 2>/dev/null | grep MMAP | wc -l`
+
+ if [ ${mmap_cnt} -gt 0 ] ; then
+ return 0
+ fi
+
+ echo "Failed to record MMAP events on CPU 1 when tracing CPU 0"
+ return 1
+}
+
+test_system_wide_tracking
+
+cleanup
+exit $err
--
2.30.GIT