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Date: Fri, 16 Oct 2015 22:02:25 +0900 From: Jungseok Lee <jungseoklee85@...il.com> To: James Morse <james.morse@....com> Cc: takahiro.akashi@...aro.org, catalin.marinas@....com, will.deacon@....com, linux-arm-kernel@...ts.infradead.org, mark.rutland@....com, barami97@...il.com, linux-kernel@...r.kernel.org Subject: Re: [PATCH v4 2/2] arm64: Expand the stack trace feature to support IRQ stack On Oct 16, 2015, at 1:01 AM, James Morse wrote: > On 15/10/15 15:24, Jungseok Lee wrote: >> On Oct 9, 2015, at 11:24 PM, James Morse wrote: >>> I think unwind_frame() needs to walk the irq stack too. [2] is an example >>> of perf tracing back to userspace, (and there are patches on the list to >>> do/fix this), so we need to walk back to the start of the first stack for >>> the perf accounting to be correct. >> >> I plan to do re-spin this series without [PATCH 2/2] since 1) Akashi's >> approach looks better than mine and 2) you have the perf patches for [2]. > > They aren't my patches - the ones I saw on the list were for arm: > https://lkml.org/lkml/2015/10/1/769 - its evidently something perf > supports, so we shouldn't make it worse… Aha, thanks for the information! Best Regards Jungseok Lee-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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