linux-kernel - Re: drm/nouneau: 5.11 cycle regression bisected to 461619f5c324 "drm/nouveau: switch to new allocator"

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Message-ID: <41cc52bd57a466f29ea81676d42f57a7b9da7dd8.camel@gmx.de>
Date:   Wed, 10 Feb 2021 12:22:41 +0100
From:   Mike Galbraith <efault@....de>
To:     Christian König <christian.koenig@....com>,
        lkml <linux-kernel@...r.kernel.org>
Cc:     nouveau@...ts.freedesktop.org, Ben Skeggs <bskeggs@...hat.com>,
        Dave Airlie <airlied@...hat.com>
Subject: Re: drm/nouneau: 5.11 cycle regression bisected to 461619f5c324
 "drm/nouveau: switch to new allocator"

On Wed, 2021-02-10 at 11:52 +0100, Christian König wrote:
>
>
> You could try to replace the "for (order = min(MAX_ORDER - 1UL,
> __fls(num_pages)); num_pages;" in ttm_pool_alloc() with "for (order = 0;
> num_pages;" to get the old behavior.

That's a nogo too.

	-Mike