[PATCH v21 0/4] arm64/perf: Enable branch stack sampling

Rob Herring robh at kernel.org
Tue May 6 14:30:43 PDT 2025


On Tue, May 6, 2025 at 9:47 AM Jonathan Cameron
<Jonathan.Cameron at huawei.com> wrote:
>
> On Mon, 07 Apr 2025 12:41:29 -0500
> "Rob Herring (Arm)" <robh at kernel.org> wrote:
>
> > This series enables perf branch stack sampling support on arm64 via a
> > v9.2 arch feature called Branch Record Buffer Extension (BRBE). Details
> > on BRBE can be found in the Arm ARM[1] chapter D18.
> >
> > I've picked up this series from Anshuman. v19 and v20 versions have been
> > reworked quite a bit by Mark and myself. The bulk of those changes are
> > in patch 4.
> >
> > A git branch is here[2].
> >
> > [1] https://developer.arm.com/documentation/ddi0487/latest/
> > [2] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git arm/brbe-v21
>
> Hi Rob,
>
> Expecting any changes on this?  Anything specific we can do to help then shout.

I hope not. Still waiting on Mark R's review though... I'm sure there
will be something and since perf drivers seemingly only get reviewed
once a cycle, I guess it will be another cycle... Sigh.

Rob



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