linux-kernel - Re: [PATCH v6 00/12] perf: arm

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Message-ID: <20250918081548.GQ12516@e132581.arm.com>
Date: Thu, 18 Sep 2025 09:15:48 +0100
From: Leo Yan <leo.yan@....com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: James Clark <james.clark@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, Mark Rutland <mark.rutland@....com>,
	Jonathan Corbet <corbet@....net>, Marc Zyngier <maz@...nel.org>,
	Oliver Upton <oliver.upton@...ux.dev>,
	Joey Gouly <joey.gouly@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Zenghui Yu <yuzenghui@...wei.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Anshuman Khandual <anshuman.khandual@....com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org, linux-doc@...r.kernel.org,
	kvmarm@...ts.linux.dev
Subject: Re: [PATCH v6 00/12] perf: arm_spe: Armv8.8 SPE features

On Wed, Sep 17, 2025 at 02:24:29PM -0300, Arnaldo Carvalho de Melo wrote:
> On Fri, Aug 08, 2025 at 01:39:13PM +0100, Leo Yan wrote:
> > On Fri, Aug 08, 2025 at 12:22:57PM +0100, James Clark wrote:
> > > Support 3 new SPE features: FEAT_SPEv1p4 filters, FEAT_SPE_EFT extended
> > > filtering, and SPE_FEAT_FDS data source filtering. The features are
> > > independent can be applied separately:
> > > 
> > >   * Prerequisite sysreg changes - patch 1
> > >   * FEAT_SPEv1p4 - patches 2 - 3
> > >   * FEAT_SPE_EFT - patch 4
> > >   * FEAT_SPE_FDS - patches 5 - 9
> > >   * FEAT_SPE_FDS Perf tool changes - patches 10 - 12
> > > 
> > > The first two features will work with old Perfs but a Perf change to
> > > parse the new config4 is required for the last feature.
> > 
> > I tested FEAT_SPE_EFT (xxx_filter_mask), inv_data_src_filter
> > and inv_event_filter, all of them work as expected.
> > 
> > Tested-by: Leo Yan <leo.yan@....com>
> 
> Please let me know when I can merge the tools/perf bits.

Thanks for bringing up this, Arnaldo!

Just remind, James sent the latest series is v8 [1] couple weeks ago,
and I confirmed v8 can apply clearly on the latest mainline kernel.
We need kernel maintainers' review so can move forward.

Thanks,
Leo

[1] https://lore.kernel.org/linux-arm-kernel/20250901-james-perf-feat_spe_eft-v8-0-2e2738f24559@linaro.org/