linux-kernel - Re: [PATCH V10 1/7] perf: Save PMU specific data in task

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Message-ID: <20250317111045.GA36386@noisy.programming.kicks-ass.net>
Date: Mon, 17 Mar 2025 12:10:45 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: kan.liang@...ux.intel.com
Cc: mingo@...hat.com, tglx@...utronix.de, bp@...en8.de, acme@...nel.org,
	namhyung@...nel.org, irogers@...gle.com,
	linux-kernel@...r.kernel.org, ak@...ux.intel.com,
	eranian@...gle.com
Subject: Re: [PATCH V10 1/7] perf: Save PMU specific data in task_struct



Kan, can you please do a patch failing perf_pmu_register() is there's
more than one pmu with one of the kmem_cache things on?

Because the current thing very much cannot deal with that case.