[PATCH] perf/dwc_pcie: Support counting multiple lane events in parallel

Will Deacon will at kernel.org
Thu Sep 18 09:43:07 PDT 2025


On Thu, 28 Aug 2025 15:35:19 -0700, Ilkka Koskinen wrote:
> While Designware PCIe PMU allows to count only one time based event
> at a time, it allows to count all the lane events simultaneously.
> After the patch one is able to count a group of lane events:
> 
>   $  perf stat -e '{dwc_rootport/tx_memory_write,lane=1/,dwc_rootport/rx_memory_read,lane=0/}' dd if=/dev/nvme0n1 of=/dev/null bs=1M count=1
> 
> Earlier the events wouldn't have been counted successfully.
> 
> [...]

Applied to will (for-next/perf), thanks!

[1/1] perf/dwc_pcie: Support counting multiple lane events in parallel
      https://git.kernel.org/will/c/71396cfac97d

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev



More information about the linux-arm-kernel mailing list