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Subject[PATCH 5.16 021/186] selftests/ftrace: Do not trace do_softirq because of PREEMPT_RT
Date
From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

[ Upstream commit 6fec1ab67f8d60704cc7de64abcfd389ab131542 ]

The PREEMPT_RT patchset does not use do_softirq() function 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. The function does not
have to be actually executed during the test, because it is only testing
filter API interface.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../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 e96e279e0533a..25432b8cd5bd2 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 ####"

--
2.34.1


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