tracing: Quiet smp_processor_id() use in preemptable warning in hwlat
The hardware latency detector (hwlat) has a mode that it runs one thread across CPUs. The logic to move from the currently running CPU to the next one in the list does a smp_processor_id() to find where it currently is. Unfortunately, it's done with preemption enabled, and this triggers a warning for using smp_processor_id() in a preempt enabled section. As it is only using smp_processor_id() to get information on where it currently is in order to simply move it to the next CPU, it doesn't really care if it got moved in the mean time. It will simply balance out later if such a case arises. Switch smp_processor_id() to raw_smp_processor_id() to quiet that warning. Link: https://lkml.kernel.org/r/20210804141848.79edadc0@oasis.local.home Acked-by:Daniel Bristot de Oliveira <bristot@redhat.com> Fixes: 8fa826b7 ("trace/hwlat: Implement the mode config option") Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org>
parent
1c0cec64
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