From: sashiko-bot@kernel.org
To: "Sandipan Das" <sandipan.das@amd.com>
Cc: linux-perf-users@vger.kernel.org
Subject: Re: [PATCH 1/3] perf vendor events amd: Add Zen 6 data fabric events
Date: Mon, 12 Oct 2026 07:59:06 +0000 [thread overview]
Message-ID: <sashiko-outbox-167816@kernel.org> (raw)
In-Reply-To: <9ae74ab1337b627f06f1cfb9e5c91c6e42ac6284.1791791463.git.sandipan.das@amd.com>
> Add Zen 6 data fabric events sourced from Section 8.1 titled "Fabric
> Performance Monitor Counter (PMC) Events" of the Processor Programming
> Reference (PPR) for AMD Family 1Ah Model 51h Revision B0 processors,
> available at the link below.
>
> The events are primarily meant to monitor the flow of data at various
> links and interfaces within the Data Fabric.
>
> Unlike previous generations, the events do not set "PerPkg". On Zen 6
> processors, a socket can have up to two IODs, each with its own Data
> Fabric instance. Perf de-duplicates "PerPkg" counts by socket and die,
> but the two IODs do not show up as separate domains in the topology
> information. Setting "PerPkg" would therefore drop the counts from the
> second IOD. The trade-off is that counts are no longer de-duplicated if
> a CPU list with multiple CPUs from the same IOD is specified with "-C".
>
> Link: https://bugzilla.kernel.org/attachment.cgi?id=311021
> Signed-off-by: Sandipan Das <sandipan.das@amd.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/cover.1791791463.git.sandipan.das@amd.com?part=1
next prev parent reply other threads:[~2026-10-12 7:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-12 7:53 [PATCH 0/3] perf vendor events amd: Add Zen 6 data fabric events and metrics Sandipan Das
2026-10-12 7:53 ` [PATCH 1/3] perf vendor events amd: Add Zen 6 data fabric events Sandipan Das
2026-10-12 7:59 ` sashiko-bot [this message]
2026-10-12 7:53 ` [PATCH 2/3] perf vendor events amd: Add Zen 6 data fabric metrics Sandipan Das
2026-10-12 8:02 ` sashiko-bot
2026-10-12 7:53 ` [PATCH 3/3] perf vendor events amd: Remove "PerPkg" from Zen 6 memory controller metrics Sandipan Das
2026-10-12 7:59 ` sashiko-bot
2026-10-12 21:00 ` [PATCH 0/3] perf vendor events amd: Add Zen 6 data fabric events and metrics Ian Rogers
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