From: Peter Zijlstra <peterz@infradead.org>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
linux-perf-users@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [perf] lockdep warning between cpu_add_remove_lock and &dev->mutex.
Date: Mon, 23 Jan 2023 16:02:39 +0100 [thread overview]
Message-ID: <Y86hjxjEizQILXB+@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <b7bc63c8-bb28-d21d-7c3f-97e4e79a9292@I-love.SAKURA.ne.jp>
On Mon, Jan 23, 2023 at 11:10:57PM +0900, Tetsuo Handa wrote:
> After applying your diff, lockdep message changed like below. Is this
> the reason commit 1704f47b50b5 ("lockdep: Add novalidate class for
> dev->mutex conversion") was applied?
No, reason was device probing itself. There should be a thread about
that with Alan Stern some 15 years ago or so.
I'll try and have a look at the new splat later today.
next prev parent reply other threads:[~2023-01-23 15:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-23 10:39 Tetsuo Handa
2023-01-23 11:41 ` Peter Zijlstra
2023-01-23 14:10 ` Tetsuo Handa
2023-01-23 15:02 ` Peter Zijlstra [this message]
2023-01-23 15:28 ` Peter Zijlstra
[not found] ` <20230124095424.4448-1-hdanton@sina.com>
2023-01-24 11:16 ` Tetsuo Handa
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