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kernel
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linux
tracing/selftests: Add tests to test histogram sym and sym-offset modifiers
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/20210707121451.101a1002@oasis.local.home
Acked-by: Tom Zanussi <zanussi@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
+18
+18
tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc
+18
tools/testing/selftests/ftrace/test.d/trigger/trigger-hist.tc
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reset_trigger
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echo "Test histogram with sym modifier"
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echo 'hist:keys=call_site.sym' > events/kmem/kmalloc/trigger
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for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
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grep '{ call_site: \[[0-9a-f][0-9a-f]*\] [_a-zA-Z][_a-zA-Z]* *}' events/kmem/kmalloc/hist > /dev/null || \
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fail "sym modifier on kmalloc call_site did not work"
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reset_trigger
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echo "Test histogram with sym-offset modifier"
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echo 'hist:keys=call_site.sym-offset' > events/kmem/kmalloc/trigger
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for i in `seq 1 10` ; do ( echo "forked" > /dev/null); done
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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 || \
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fail "sym-offset modifier on kmalloc call_site did not work"
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reset_trigger
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echo "Test histogram with sort key"
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echo 'hist:keys=parent_pid,child_pid:sort=child_pid.ascending' > events/sched/sched_process_fork/trigger