Messages in this thread Patch in this message | | | From | Krzysztof Kozlowski <> | Subject | [PATCH v2] selftests/ftrace: Do not trace do_softirq because of PREEMPT_RT | Date | Thu, 10 Feb 2022 09:33:56 +0100 |
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The PREEMPT_RT patchset does not use soft IRQs thus trying to filter for do_softirq fails for such kernel:
echo do_softirq ftracetest: 81: echo: echo: I/O error
Choose some other visible function for the test.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
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Changes since v1: 1. Use scheduler_tick. 2. Add review tag.
Notes: I understand that the failure does not exist on mainline kernel (only with PREEMPT_RT patchset) but the change does not harm it.
If it is not suitable alone, please consider it for RT patchset. --- .../selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc b/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc index e96e279e0533..25432b8cd5bd 100644 --- a/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc +++ b/tools/testing/selftests/ftrace/test.d/ftrace/func_set_ftrace_file.tc @@ -19,7 +19,7 @@ fail() { # mesg FILTER=set_ftrace_filter FUNC1="schedule" -FUNC2="do_softirq" +FUNC2="scheduler_tick" ALL_FUNCS="#### all functions enabled ####" -- 2.32.0
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