From: Will Deacon <will@kernel.org>
To: Geoff Blake <blakgeof@amazon.com>
Cc: Robin Murphy <robin.murphy@arm.com>,
mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, ilkka@os.amperecomputing.com
Subject: Re: [PATCH] perf/arm-cmn: Fix DTC reset
Date: Fri, 14 Apr 2023 13:42:40 +0100 [thread overview]
Message-ID: <20230414124239.GA27611@willie-the-truck> (raw)
In-Reply-To: <b2488619-a306-981c-1172-7efce749c10e@amazon.com>
Hi Geoff,
On Thu, Apr 06, 2023 at 04:25:39PM -0500, Geoff Blake wrote:
> Ran this patch on an AWS C6g.metal and unfortunately still see the
> spurious IRQs trigger quickly (within 10 tries) when using the following
> flow:
>
> perf stat -a -e arm_cmn_0/event=0x5,type=0x5/ -- sleep 600
> kexec -e
>
> Adding in the simple shutdown routine, I have run over 100 of the
> above cycles and the spurious IRQs haven't triggered. I think we still
> need both for now.
Does that mean you're happy for me to queue this change as-is?
Will
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next prev parent reply other threads:[~2023-04-14 12:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-06 14:49 [PATCH] perf/arm-cmn: Fix DTC reset Robin Murphy
2023-04-06 21:25 ` Geoff Blake
2023-04-14 12:42 ` Will Deacon [this message]
2023-04-14 14:04 ` Geoff Blake
2023-04-14 14:19 ` Robin Murphy
2023-04-25 15:49 ` Robin Murphy
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