From: Maarten Lankhorst <maarten.lankhorst@canonical.com>
To: "Michel Dänzer" <michel@daenzer.net>, "Marek Olšák" <maraeo@gmail.com>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: TTM's role in score-based eviction
Date: Tue, 10 Dec 2013 12:03:31 +0100 [thread overview]
Message-ID: <52A6F503.7010301@canonical.com> (raw)
In-Reply-To: <1386636560.32592.109.camel@thor.local>
op 10-12-13 01:49, Michel Dänzer schreef:
> On Mon, 2013-12-09 at 23:45 +0100, Marek Olšák wrote:
>> On Mon, Dec 9, 2013 at 9:30 PM, Lauri Kasanen <cand@gmx.com> wrote:
>>> Note that the hotness calculation will be in userspace, as only there
>>> are the necessary counters available. So the finished hotness score
>>> will be passed to the kernel, instead of sending all the necessary data
>>> there. Ought to be less context switches that way.
> Sounds like this could be abused by userspace though...
Of all the worries that exist, this is a non-issue. Userspace can simply queue a lot of
draw calls that take 1 second each through the normal command submission methods,
why would it need to tweak some obscure number to cause some eviction?
>> This sounds good, but you will also need to update the DDX for
>> everything up to and including Cayman. Hopefully the DDX doesn't emit
>> IBs outside of glamor on Southern Islands and later chips.
> It doesn't.
>
>
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next prev parent reply other threads:[~2013-12-10 11:03 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-05 9:36 TTM's role in score-based eviction Lauri Kasanen
2013-12-05 10:26 ` Thomas Hellstrom
2013-12-05 15:49 ` Jerome Glisse
2013-12-05 16:22 ` Maarten Lankhorst
2013-12-05 16:45 ` Jerome Glisse
2013-12-09 17:28 ` Daniel Vetter
2013-12-09 19:32 ` Thomas Hellstrom
2013-12-09 19:28 ` Marek Olšák
2013-12-09 20:30 ` Lauri Kasanen
2013-12-09 22:45 ` Marek Olšák
2013-12-10 0:49 ` Michel Dänzer
2013-12-10 11:03 ` Maarten Lankhorst [this message]
2013-12-11 3:04 ` Michel Dänzer
2013-12-11 7:57 ` Maarten Lankhorst
2013-12-11 8:36 ` Thomas Hellstrom
2013-12-11 11:35 ` Lauri Kasanen
2013-12-11 14:46 ` Thomas Hellstrom
2013-12-11 16:29 ` Lauri Kasanen
2013-12-10 11:14 ` Marek Olšák
2013-12-10 11:59 ` Lauri Kasanen
2013-12-10 13:18 ` Marek Olšák
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