On 2/14/22 4:19 AM, Sebastian Andrzej Siewior wrote:
On 2022-02-14 09:36:57 [+0100], Krzysztof Kozlowski wrote:
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 Reviewed-by: Steven Rostedt (VMware) rostedt@goodmis.org
Acked-by: Sebastian Andrzej Siewior bigeasy@linutronix.de
Notes: I understand that the failure does not exist on mainline kernel (only with PREEMPT_RT patchset) but the change does not harm it.
Steve,
Would you like me to take this through linux-kselftest next for 5.18-rc1
I am guessing there is no urgency on this - of not I can take this in for rc5.
thanks, -- Shuah