linux-kernel - Re: [PATCH v2] perf/arm-cmn: Ensure port and device id bits are set properly

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Message-ID: <20241125125233.GB858@willie-the-truck>
Date: Mon, 25 Nov 2024 12:52:33 +0000
From: Will Deacon <will@...nel.org>
To: Namhyung Kim <namhyung@...nel.org>, catalin.marinas@....com
Cc: Mark Rutland <mark.rutland@....com>,
	Robin Murphy <robin.murphy@....com>,
	Stephane Eranian <eranian@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] perf/arm-cmn: Ensure port and device id bits are set
 properly

On Wed, Nov 20, 2024 at 04:13:34PM -0800, Namhyung Kim wrote:
> The portid_bits and deviceid_bits were set only for XP type nodes in
> the arm_cmn_discover() and it confused other nodes to find XP nodes.
> Copy the both bits from the XP nodes directly when it sets up a new
> node.
> 
> Fixes: e79634b53e39 ("perf/arm-cmn: Refactor node ID handling. Again.")
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>
> ---
>  drivers/perf/arm-cmn.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Acked-by: Will Deacon <will@...nel.org>

Catalin -- here's another perf fix for you!

Thanks,

Will