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authorMasami Hiramatsu <mhiramat@kernel.org>2018-08-30 23:25:39 +0900
committerShuah Khan (Samsung OSG) <shuah@kernel.org>2018-10-24 14:49:36 -0600
commit8ffade754bdf8350f63792c6125346d77f975b41 (patch)
tree6e34f02f42e3c114518a270642dd1674bbb1f20e /tools
parentc575dea2c1a50306d382615fad06767564734e0b (diff)
downloadlinux-8ffade754bdf8350f63792c6125346d77f975b41.tar.bz2
selftests/ftrace: Add ftrace cpumask testcase
Add a testcase for tracing_cpumask with function tracer. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc42
1 files changed, 42 insertions, 0 deletions
diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc
new file mode 100644
index 000000000000..0e6810743576
--- /dev/null
+++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_cpumask.tc
@@ -0,0 +1,42 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL2.0
+# description: ftrace - function trace with cpumask
+
+if ! which nproc ; then
+ nproc() {
+ ls -d /sys/devices/system/cpu/cpu[0-9]* | wc -l
+ }
+fi
+
+NP=`nproc`
+
+if [ $NP -eq 1 ] ;then
+ echo "We can not test cpumask on UP environment"
+ exit_unresolved
+fi
+
+ORIG_CPUMASK=`cat tracing_cpumask`
+
+do_reset() {
+ echo $ORIG_CPUMASK > tracing_cpumask
+}
+
+echo 0 > tracing_on
+echo > trace
+: "Bitmask only record on CPU1"
+echo 2 > tracing_cpumask
+MASK=0x`cat tracing_cpumask`
+test `printf "%d" $MASK` -eq 2 || do_reset
+
+echo function > current_tracer
+echo 1 > tracing_on
+(echo "forked")
+echo 0 > tracing_on
+
+: "Check CPU1 events are recorded"
+grep -q -e "\[001\]" trace || do_reset
+
+: "There should be No other cpu events"
+! grep -qv -e "\[001\]" -e "^#" trace || do_reset
+
+do_reset