From: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
To: dri-devel@lists.freedesktop.org, intel-xe@lists.freedesktop.org,
christian.koenig@amd.com
Subject: drm_exec changes for eviction
Date: Mon, 06 May 2024 11:46:51 +0200 [thread overview]
Message-ID: <9f5f8b3b93b629c8530bbcce9567b51a320c5537.camel@linux.intel.com> (raw)
Hi Christian, Others.
In order to support exhaustive eviction there are some changes that I
think needs to be made to drm_exec:
1) Trylock support
(This is for ttm_bo_vm, ttm_buffer_object_init_reserved, and also for
the eviction path where I think we want to make a trylock pass before a
sleeping lock pass).
In essence this means we can't leave any contending lock unlocked until
the next sleeping lock, but rather need to relock it on
drm_exec_retry_on_contention(), meaning that that macro also gets
passed and returns an error code to handle -EINTR.
2) Snapshot unlock
After successfully obtaining backing store, we want to unlock all
evicted objects. So snapshot the drm_exec state when eviction begins,
and unlock everything down to the snapshot after successful backing
store allocation. Essentially the snapshot contains the number of
locked objects and a pointer to the prelocked object.
Any concerns?
Thanks,
Thomas
next reply other threads:[~2024-05-06 9:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-06 9:46 Thomas Hellström [this message]
2024-05-07 13:36 ` drm_exec changes for eviction Christian König
2024-05-07 14:41 ` Thomas Hellström
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=9f5f8b3b93b629c8530bbcce9567b51a320c5537.camel@linux.intel.com \
--to=thomas.hellstrom@linux.intel.com \
--cc=christian.koenig@amd.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=intel-xe@lists.freedesktop.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).