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tracing/selftests: Add tests to test histogram sym and sym-offset modifiers

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Add a test to the tracing selftests that will catch if the .sym or
.sym-offset modifiers break in the future.

Link: https://lkml.kernel.org/r/[email protected]

Acked-by: Tom Zanussi <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>
This commit is contained in:
Steven Rostedt (VMware) committed 2021-07-08 13:01:51 -04:00
1 parent 26c5637310
commit fa73514d5e
1 file changed
+18
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tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc
+18
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@@ -39,6 +39,24 @@ grep "parent_comm: $COMM" events/sched/sched_process_fork/hist > /dev/null || \
reset_trigger
echo "Test histogram with sym modifier"
echo 'hist:keys=call_site.sym' > events/kmem/kmalloc/trigger
for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]* *}' events/kmem/kmalloc/hist > /dev/null || \
fail "sym modifier on kmalloc call_site did not work"
reset_trigger
echo "Test histogram with sym-offset modifier"
echo 'hist:keys=call_site.sym-offset' > events/kmem/kmalloc/trigger
for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]*+0x[0-9a-f][0-9a-f]*' events/kmem/kmalloc/hist > /dev/null || \
fail "sym-offset modifier on kmalloc call_site did not work"
reset_trigger
echo "Test histogram with sort key"
echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger