linux-kernel - Re: [PATCH v2] perf/core: restore __perf_remove_from_context when DETACH

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Message-ID: <20250603140808.GB38114@noisy.programming.kicks-ass.net>
Date: Tue, 3 Jun 2025 16:08:08 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Yeoreum Yun <yeoreum.yun@....com>
Cc: David Wang <00107082@....com>, mingo@...hat.com, acme@...nel.org,
	namhyung@...nel.org, mingo@...nel.org, leo.yan@....com,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] perf/core: restore __perf_remove_from_context when
 DETACH_EXIT not set

On Tue, Jun 03, 2025 at 02:22:37PM +0100, Yeoreum Yun wrote:

> I think it would break if event->state is "PERF_EVENT_STATE_ERROR".

Indeed.

> TBH, there is the patch to solve this problem:
>   https://lore.kernel.org/all/20250602184049.4010919-1-yeoreum.yun@arm.com/
> 
> Does it have a problem?

It does mean we can remove that pending_disable thing from DETACH_DEAD I
think.

Also let me edit the Changelog, the actual splat doesn't really have
much useful information.