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From: "Christian König" <christian.koenig@amd.com>
To: Mike Galbraith <efault@gmx.de>, lkml <linux-kernel@vger.kernel.org>
Cc: nouveau@lists.freedesktop.org, Ben Skeggs <bskeggs@redhat.com>,
	Dave Airlie <airlied@redhat.com>
Subject: Re: drm/nouneau: 5.11 cycle regression bisected to 461619f5c324 "drm/nouveau: switch to new allocator"
Date: Wed, 10 Feb 2021 12:44:59 +0100	[thread overview]
Message-ID: <5df26bda-9ff8-168f-e5a3-0bb503ffcca9@amd.com> (raw)
In-Reply-To: <41cc52bd57a466f29ea81676d42f57a7b9da7dd8.camel@gmx.de>

Please try to add a "return NULL" at the beginning of ttm_pool_type_take().

That should effectively disable using the pool.

Thanks for testing,
Christian.

Am 10.02.21 um 12:22 schrieb Mike Galbraith:
> 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
>


WARNING: multiple messages have this Message-ID (diff)
From: "Christian König" <christian.koenig@amd.com>
To: Mike Galbraith <efault@gmx.de>, lkml <linux-kernel@vger.kernel.org>
Cc: nouveau@lists.freedesktop.org, Ben Skeggs <bskeggs@redhat.com>,
	Dave Airlie <airlied@redhat.com>
Subject: Re: [Nouveau] drm/nouneau: 5.11 cycle regression bisected to 461619f5c324 "drm/nouveau: switch to new allocator"
Date: Wed, 10 Feb 2021 12:44:59 +0100	[thread overview]
Message-ID: <5df26bda-9ff8-168f-e5a3-0bb503ffcca9@amd.com> (raw)
In-Reply-To: <41cc52bd57a466f29ea81676d42f57a7b9da7dd8.camel@gmx.de>

Please try to add a "return NULL" at the beginning of ttm_pool_type_take().

That should effectively disable using the pool.

Thanks for testing,
Christian.

Am 10.02.21 um 12:22 schrieb Mike Galbraith:
> 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
>

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  reply	other threads:[~2021-02-10 11:51 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-10 10:13 drm/nouneau: 5.11 cycle regression bisected to 461619f5c324 "drm/nouveau: switch to new allocator" Mike Galbraith
2021-02-10 10:13 ` [Nouveau] " Mike Galbraith
2021-02-10 10:34 ` Christian König
2021-02-10 10:34   ` [Nouveau] " Christian König
2021-02-10 10:40   ` Mike Galbraith
2021-02-10 10:40     ` [Nouveau] " Mike Galbraith
2021-02-10 10:42     ` Christian König
2021-02-10 10:42       ` [Nouveau] " Christian König
2021-02-10 11:06       ` Mike Galbraith
2021-02-10 11:06         ` [Nouveau] " Mike Galbraith
2021-02-10 10:46   ` Mike Galbraith
2021-02-10 10:46     ` [Nouveau] " Mike Galbraith
2021-02-10 10:52     ` Christian König
2021-02-10 10:52       ` [Nouveau] " Christian König
2021-02-10 11:22       ` Mike Galbraith
2021-02-10 11:22         ` [Nouveau] " Mike Galbraith
2021-02-10 11:44         ` Christian König [this message]
2021-02-10 11:44           ` Christian König
2021-02-10 12:22           ` Mike Galbraith
2021-02-10 12:22             ` [Nouveau] " Mike Galbraith
2021-02-10 13:26             ` Christian König
2021-02-10 13:26               ` [Nouveau] " Christian König
2021-02-10 15:30               ` Mike Galbraith
2021-02-10 15:30                 ` [Nouveau] " Mike Galbraith
2021-02-10 15:34                 ` Christian König
2021-02-10 15:34                   ` [Nouveau] " Christian König
2021-02-10 15:37                   ` Mike Galbraith
2021-02-10 15:37                     ` [Nouveau] " Mike Galbraith

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