tracing, hardirq: No moar _rcuidle() tracing

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Robot reported that trace_hardirqs_{on,off}() tickle the forbidden
_rcuidle() tracepoint through local_irq_{en,dis}able().

For 'sane' configs, these calls will only happen with RCU enabled and
as such can use the regular tracepoint. This also means it's possible
to trace them from NMI context again.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230112195541.477416709@infradead.org

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Peter Zijlstra 2023-01-12 20:43:49 +01:00 • committed by Ingo Molnar

parent 408b961146

commit 9aedeaed6f

1 changed files with 18 additions and 8 deletions

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kernel/trace/trace_preemptirq.c

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