From: Chris Wilson <chris@chris-wilson.co.uk>
To: Ben Widawsky <ben@bwidawsk.net>
Cc: Intel GFX <intel-gfx@lists.freedesktop.org>
Subject: Re: [PATCH 2/2] drm/i915: Unpin stolen pages
Date: Sat, 1 Jun 2013 00:51:02 +0100 [thread overview]
Message-ID: <20130531235102.GA1097@cantiga.alporthouse.com> (raw)
In-Reply-To: <1370036780-13482-2-git-send-email-ben@bwidawsk.net>
On Fri, May 31, 2013 at 02:46:20PM -0700, Ben Widawsky wrote:
> The way the stolen handling works is we take a pin on the backing pages,
> but we never actually get a reference to the bo. On freeing objects
> allocated with stolen memory, the final unref will end up freeing the
> object with pinned pages count left. To enable an assertion to catch
> bugs in this code path, this patch cleans up that remaining pin.
>
> Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
That neatly explains the WARN. Not too happy about accumulating lots of
backing storage specific processing into free_object, but that can be
fixed up later (there is an obj->ops->release() pending).
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
next prev parent reply other threads:[~2013-05-31 23:51 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-31 18:28 [PATCH 1/4] drm/i915: Demote unknown param to DRM_DEBUG Ben Widawsky
2013-05-31 18:28 ` [PATCH 2/4] drm/i915: Unbind the fb Ben Widawsky
2013-05-31 18:45 ` [PATCH 2/4] [v2] " Ben Widawsky
2013-05-31 19:39 ` Chris Wilson
2013-05-31 20:08 ` Ben Widawsky
2013-05-31 18:28 ` [PATCH 3/4] drm/i915: unpin pages at unbind Ben Widawsky
2013-05-31 18:46 ` Chris Wilson
2013-05-31 21:46 ` [PATCH 1/2] drm/i915: Make stolen use pin pages Ben Widawsky
2013-05-31 21:44 ` Ben Widawsky
2013-05-31 21:46 ` [PATCH 2/2] drm/i915: Unpin stolen pages Ben Widawsky
2013-05-31 23:51 ` Chris Wilson [this message]
2013-06-01 9:17 ` Daniel Vetter
2013-06-01 11:34 ` Chris Wilson
2013-06-01 13:13 ` Daniel Vetter
2013-06-03 8:36 ` Chris Wilson
2013-06-03 8:52 ` Daniel Vetter
2013-06-03 22:54 ` Ben Widawsky
2013-05-31 18:28 ` [PATCH 4/4] drm/i915: Rename the gtt_list to global_list Ben Widawsky
2013-05-31 18:40 ` Chris Wilson
2013-05-31 18:38 ` [PATCH 1/4] drm/i915: Demote unknown param to DRM_DEBUG Chris Wilson
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