[PATCH v4] arm64: Enable perf events based hard lockup detector

Will Deacon will at kernel.org
Wed Nov 25 10:44:08 EST 2020


On Wed, 7 Oct 2020 14:21:43 +0530, Sumit Garg wrote:
> With the recent feature added to enable perf events to use pseudo NMIs
> as interrupts on platforms which support GICv3 or later, its now been
> possible to enable hard lockup detector (or NMI watchdog) on arm64
> platforms. So enable corresponding support.
> 
> One thing to note here is that normally lockup detector is initialized
> just after the early initcalls but PMU on arm64 comes up much later as
> device_initcall(). So we need to re-initialize lockup detection once
> PMU has been initialized.

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

[1/1] arm64: Enable perf events based hard lockup detector
      https://git.kernel.org/will/c/367c820ef080

Cheers,
-- 
Will

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



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