linux-kernel - Re: [PATCH 0/3] perf test: Extend branch stack sampling test for arm64 BRBE

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Message-ID: <CAP-5=fXdFQCgeF5DRH=-cUErz2opU98H6u1cTTO3ZPJ7SMQfMw@mail.gmail.com>
Date: Mon, 18 Aug 2025 14:38:10 -0700
From: Ian Rogers <irogers@...gle.com>
To: James Clark <james.clark@...aro.org>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Adrian Hunter <adrian.hunter@...el.com>, Anshuman Khandual <anshuman.khandual@....com>, 
	"Rob Herring (Arm)" <robh@...nel.org>, Adam Young <admiyo@...amperecomputing.com>, 
	Will Deacon <will@...nel.org>, German Gomez <german.gomez@....com>, linux-perf-users@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] perf test: Extend branch stack sampling test for
 arm64 BRBE

On Wed, Aug 13, 2025 at 6:39 AM James Clark <james.clark@...aro.org> wrote:
>
> Refactor and add some extra tests for all platforms which were useful
> when developing and testing the BRBE (Branch Buffer Extension) driver
> [1]. Then lastly extend the test for new features which are BRBE
> specific.
>
> Tested on the Arm FVP RevC model [2] and Intel Raptor Lake.
>
> [1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=58074a0fce66
> [2]: https://developer.arm.com/Tools%20and%20Software/Fixed%20Virtual%20Platforms
>
> Signed-off-by: James Clark <james.clark@...aro.org>

Reviewed-by: Ian Rogers <irogers@...gle.com>

Thanks,
Ian

> ---
> James Clark (3):
>       perf test: Refactor brstack test
>       perf test: Add syscall and address tests to brstack test
>       perf test: Extend branch stack sampling test for Arm64 BRBE
>
>  tools/perf/tests/builtin-test.c        |   1 +
>  tools/perf/tests/shell/test_brstack.sh | 106 ++++++++++++++++++++++++++++++---
>  tools/perf/tests/tests.h               |   1 +
>  tools/perf/tests/workloads/Build       |   2 +
>  tools/perf/tests/workloads/traploop.c  |  31 ++++++++++
>  5 files changed, 132 insertions(+), 9 deletions(-)
> ---
> base-commit: 6235ce77749f45cac27f630337e2fdf04e8a6c73
> change-id: 20250811-james-brbe-test-f5a20dffd734
>
> Best regards,
> --
> James Clark <james.clark@...aro.org>
>