linux-kernel - Re: [PATCH v2] perf/arm-smmuv3: Fix lockdep assert in ->event

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Message-ID: <20241125125106.GA858@willie-the-truck>
Date: Mon, 25 Nov 2024 12:51:07 +0000
From: Will Deacon <will@...nel.org>
To: Chun-Tse Shao <ctshao@...gle.com>, catalin.marinas@....com
Cc: linux-kernel@...r.kernel.org, Greg Thelen <gthelen@...gle.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	Tuan Phan <tuanphan@...amperecomputing.com>,
	Mark Rutland <mark.rutland@....com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] perf/arm-smmuv3: Fix lockdep assert in ->event_init()

On Fri, Nov 08, 2024 at 05:08:05AM +0000, Chun-Tse Shao wrote:
> Same as
> https://lore.kernel.org/all/20240514180050.182454-1-namhyung@kernel.org/,
> we should skip `for_each_sibling_event()` for group leader since it
> doesn't have the ctx yet.
> 
> Fixes: f3c0eba28704 ("perf: Add a few assertions")
> Reported-by: Greg Thelen <gthelen@...gle.com>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Robin Murphy <robin.murphy@....com>
> Cc: Tuan Phan <tuanphan@...amperecomputing.com>
> Signed-off-by: Chun-Tse Shao <ctshao@...gle.com>
> ---
>  drivers/perf/arm_smmuv3_pmu.c | 19 +++++++++++--------
>  1 file changed, 11 insertions(+), 8 deletions(-)

Acked-by: Will Deacon <will@...nel.org>

Catalin -- please can you pick this up for -rc1?

Will