linux-kernel - Re: [PATCH] drm/syncobj: make lockdep complain on WAIT_FOR

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Message-ID: <ebf6940b-223c-9b92-3220-a79063723373@amd.com>
Date:   Tue, 19 Jan 2021 11:08:54 +0100
From:   Christian König <christian.koenig@....com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     daniel@...ll.ch, mingo@...hat.com, will@...nel.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/syncobj: make lockdep complain on WAIT_FOR_SUBMIT v2

Am 19.01.21 um 11:05 schrieb Peter Zijlstra:
> On Tue, Jan 19, 2021 at 10:46:53AM +0100, Christian König wrote:
>> But I'm going to double check if drm_syncobj_fence_add_wait() isn't used
>> elsewhere as well.
> drm_syncobj_array_wait_timeout()
>
> Which is why I asked.. :-)

Ok, good point as well. But this isn't driver interface and rather IOCTL 
implementation.

So if we hold any locks there it is our own stupidity. Going to add the 
appropriate annotation anyway.

Thanks,
Christian.