From: Andi Kleen <andi@firstfloor.org>
To: Eric Anholt <eric@anholt.net>
Cc: linux-kernel@vger.kernel.org, dri-devel@lists.sourceforge.net
Subject: Re: DRM lock ordering fix series
Date: Fri, 27 Mar 2009 10:34:30 +0100 [thread overview]
Message-ID: <87ocvnmhqx.fsf@basil.nowhere.org> (raw)
In-Reply-To: <1238017510-26784-1-git-send-email-eric@anholt.net> (Eric Anholt's message of "Wed, 25 Mar 2009 14:45:04 -0700")
Eric Anholt <eric@anholt.net> writes:
> Here's hopefully the final attempt at the lock ordering fix for GEM. The
> problem was introduced in .29 with the GTT mapping support. We hashed out
> a few potential fixes on the mailing list and at OSTS. Peter's plan was
> to use get_user_pages, but it has significant CPU overhead (10% cost to text
> rendering, though part of that is due to some dumb userland code. But it's
> dumb userland code we're all running).
You are aware that there is a fast path now (get_user_pages_fast) which
is significantly faster? (but has some limitations)
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2009-03-27 9:35 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-25 21:45 DRM lock ordering fix series Eric Anholt
2009-03-25 21:45 ` [PATCH 1/6] drm/i915: Fix lock order reversal in GTT pwrite path Eric Anholt
2009-03-25 21:45 ` [PATCH 2/6] drm/i915: Make GEM object's page lists refcounted instead of get/free Eric Anholt
2009-03-25 21:45 ` [PATCH 3/6] drm/i915: Fix lock order reversal in shmem pwrite path Eric Anholt
2009-03-25 21:45 ` [PATCH 4/6] drm/i915: Fix lock order reversal in shmem pread path Eric Anholt
2009-03-25 21:45 ` [PATCH 5/6] drm/i915: Fix lock order reversal with cliprects and cmdbuf in non-DRI2 paths Eric Anholt
2009-03-25 21:45 ` [PATCH 6/6] drm/i915: Fix lock order reversal in GEM relocation entry copying Eric Anholt
2009-03-30 10:00 ` [PATCH 6/6] drm/i915: Fix lock order reversal in GEM relocation entry copying. -- makes X hang Florian Mickler
2009-03-31 19:36 ` Eric Anholt
2009-04-01 0:12 ` Florian Mickler
2009-03-27 0:52 ` [PATCH 5/6] drm/i915: Fix lock order reversal with cliprects and cmdbuf in non-DRI2 paths Jesse Barnes
2009-03-25 23:30 ` [PATCH 4/6] drm/i915: Fix lock order reversal in shmem pread path Dave Airlie
2009-03-26 4:03 ` Keith Packard
2009-03-27 0:50 ` Jesse Barnes
2009-03-27 0:50 ` [PATCH 3/6] drm/i915: Fix lock order reversal in shmem pwrite path Jesse Barnes
2009-03-25 22:52 ` [PATCH 2/6] drm/i915: Make GEM object's page lists refcounted instead of get/free Dave Airlie
2009-03-26 19:59 ` Eric Anholt
2009-03-27 0:47 ` Jesse Barnes
2009-03-27 0:43 ` [PATCH 1/6] drm/i915: Fix lock order reversal in GTT pwrite path Jesse Barnes
2009-03-27 16:56 ` Eric Anholt
2009-03-27 17:07 ` Jesse Barnes
2009-03-28 0:54 ` Peter Zijlstra
2009-03-28 2:35 ` Jesse Barnes
2009-03-28 5:22 ` Dave Airlie
2009-03-27 9:34 ` Andi Kleen [this message]
2009-03-27 16:19 ` DRM lock ordering fix series Eric Anholt
2009-03-27 16:36 ` Eric Anholt
2009-03-27 18:10 ` Andi Kleen
2009-03-27 20:10 ` Eric Anholt
2009-03-27 21:05 ` Andi Kleen
2009-03-28 0:58 ` Peter Zijlstra
2009-03-28 1:29 ` Peter Zijlstra
2009-03-30 6:29 ` Eric Anholt
2009-03-28 8:46 ` Brice Goglin
2009-03-28 10:48 ` Peter Zijlstra
2009-03-28 12:22 ` [RFC] x86: gup_fast() batch limit (was: DRM lock ordering fix series) Peter Zijlstra
2009-03-28 12:46 ` Peter Zijlstra
2009-04-02 11:19 ` Nick Piggin
2009-06-24 13:46 ` [RFC] x86: gup_fast() batch limit Brice Goglin
2009-06-24 17:07 ` Peter Zijlstra
2009-06-24 19:55 ` Peter Zijlstra
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=87ocvnmhqx.fsf@basil.nowhere.org \
--to=andi@firstfloor.org \
--cc=dri-devel@lists.sourceforge.net \
--cc=eric@anholt.net \
--cc=linux-kernel@vger.kernel.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.