From: Chris Wilson Date: Mon, 14 Sep 2009 15:50:30 +0000 (+0100) Subject: drm/i915: Improve behaviour under memory pressure X-Git-Tag: v2.6.32-rc1~52^2~21 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07f73f6912667621276b002e33844ef283d98203;p=pandora-kernel.git drm/i915: Improve behaviour under memory pressure Due to the necessity of having to take the struct_mutex, the i915 shrinker can not free the inactive lists if we fail to allocate memory whilst processing a batch buffer, triggering an OOM and an ENOMEM that is reported back to userspace. In order to fare better under such circumstances we need to manually retry a failed allocation after evicting inactive buffers. To do so involves 3 steps: 1. Marking the backing shm pages as NORETRY. 2. Updating the get_pages() callers to evict something on failure and then retry. 3. Revamping the evict something logic to be smarter about the required buffer size and prefer to use volatile or clean inactive pages. Signed-off-by: Chris Wilson Signed-off-by: Jesse Barnes --- Reading git-diff-tree failed