From: Chris Wilson <chris@chris-wilson.co.uk>
To: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH] drm/i915: Do an initial lockless wait for render completion before pread/pwrite
Date: Sun, 16 Dec 2012 18:29:32 +0000 [thread overview]
Message-ID: <453bf0$6tgthm@azsmga001.ch.intel.com> (raw)
In-Reply-To: <1355680315-25793-1-git-send-email-chris@chris-wilson.co.uk>
On Sun, 16 Dec 2012 17:51:55 +0000, Chris Wilson <chris@chris-wilson.co.uk> wrote:
> Before performing the domain transition for pread/pwrite, and so a locked
> completion if still required, wait for any pending rendering locklessly.
> This should reduce contention when reading back results from the GPU, for
> example.
Meh, the pwrite side messes around with the ret=-EFAULT and so screws up
the shmem_write patch.
-Chris
>
--
Chris Wilson, Intel Open Source Technology Centre
prev parent reply other threads:[~2012-12-16 18:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-16 17:51 [PATCH] drm/i915: Do an initial lockless wait for render completion before pread/pwrite Chris Wilson
2012-12-16 18:29 ` Chris Wilson [this message]
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