Re: [PATCH v2] arch/arm64: Fix topology initialization for core scheduling
From: Dietmar Eggemann <dietmar.eggemann@arm.com>
Date: 2022-03-31 15:49:52
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On 31/03/2022 16:53, Phil Auld wrote:
On Thu, Mar 31, 2022 at 04:37:50PM +0200 Dietmar Eggemann wrote:quoted
On 31/03/2022 15:21, Phil Auld wrote:quoted
On Thu, Mar 31, 2022 at 11:04:31AM +0200 Dietmar Eggemann wrote:quoted
On 30/03/2022 17:56, Phil Auld wrote:
[...]
quoted
Yeah, maybe, it wouldn't hurt I guess. IMHO mentioning stress-ng's prctl needs PR_SCHED_CORE support could also be handy since today's stress-ng packages don't seem to have this yet.My scripts clone it so I did not realize that was not in prepackaged versions yet. But that said, that's really just a way to tickle the problem. Anyone using core scheduling on such a system will hit this (at least the WARN part, the actual crash was harder to create w/o all the threads and tasks stress-ng uses).
OK. I just saw that there is even a kselftest for this: 9f2699007493 - kselftest: Add test for core sched prctl interface (2021-05-12 Chris Hyser) But it doesn't trigger the issue.
I can send a v3 with a further commit message update.
Sounds good. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel