[PATCH v4 2/2] arm64: Expand the stack trace feature to support IRQ stack

Jungseok Lee jungseoklee85 at gmail.com
Fri Oct 16 06:02:25 PDT 2015

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

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