On Wed, 21 Jul 2021 01:48:28 -0400, Athira Rajeev wrote:
> Running perf fuzzer testsuite popped up below messages
> in the dmesg logs:
>
> "Can't find PMC that caused IRQ"
>
> This means a PMU exception happened, but none of the PMC's (Performance
> Monitor Counter) were found to be overflown. Perf interrupt handler checks
> the PMC's to see which PMC has overflown and if none of the PMCs are
> overflown ( counter value not >= 0x80000000 ), it throws warning:
> "Can't find PMC that caused IRQ".
>
> [...]
Applied to powerpc/next.
[1/1] powerpc/perf: Fix PMU callbacks to clear pending PMI before resetting an
overflown PMC
https://git.kernel.org/powerpc/c/2c9ac51b850d84ee496b0a5d832ce66d411ae552
cheers
