kernel/include/drm/ttm/ttm_bo_api.h, branch linux-3.0.y

Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6

2011-04-07T18:14:49Z

* 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6: Fix common misspellings

drm: fix "persistant" typo

2011-04-05T00:22:23Z

Signed-off-by: Jan Engelhardt Signed-off-by: Dave Airlie

Fix common misspellings

2011-03-31T14:26:23Z

Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi

drm/ttm: Fix up io_mem_reserve / io_mem_free calling

2010-11-22T03:25:22Z

This patch attempts to fix up shortcomings with the current calling sequences. 1) There's a fastpath where no locking occurs and only io_mem_reserved is called to obtain needed info for mapping. The fastpath is set per memory type manager. 2) If the fastpath is disabled, io_mem_reserve and io_mem_free will be exactly balanced and not called recursively for the same struct ttm_mem_reg. 3) Optionally the driver can choose to enable a per memory type manager LRU eviction mechanism that, when io_mem_reserve returns -EAGAIN will attempt to kill user-space mappings of memory in that manager to free up needed resources Signed-off-by: Thomas Hellstrom Reviewed-by: Ben Skeggs Signed-off-by: Dave Airlie

drm/ttm/radeon/nouveau: Kill the bo lock in favour of a bo device fence_lock

2010-11-22T03:25:18Z

The bo lock used only to protect the bo sync object members, and since it is a per bo lock, fencing a buffer list will see a lot of locks and unlocks. Replace it with a per-device lock that protects the sync object members on *all* bos. Reading and setting these members will always be very quick, so the risc of heavy lock contention is microscopic. Note that waiting for sync objects will always take place outside of this lock. The bo device fence lock will eventually be replaced with a seqlock / rcu mechanism so we can determine that a bo is idle under a rcu / read seqlock. However this change will allow us to batch fencing and unreserving of buffers with a minimal amount of locking. Signed-off-by: Thomas Hellstrom Reviewed-by: Jerome Glisse Signed-off-by: Dave Airlie

drm/ttm: Add a bo list reserve fastpath (v2)

2010-11-22T03:24:40Z

Makes it possible to reserve a list of buffer objects with a single spin lock / unlock if there is no contention. Should improve cpu usage on SMP kernels. v2: Initialize private list members on reserve and don't call ttm_bo_list_ref_sub() with zero put_count. Signed-off-by: Thomas Hellstrom Signed-off-by: Dave Airlie

drm/ttm: Be consistent on ttm_bo_init() failures

2010-11-10T01:52:19Z

Call destroy() on _all_ ttm_bo_init() failures, and make sure that behavior is documented in the function description. Signed-off-by: Thomas Hellstrom Signed-off-by: Dave Airlie

Merge branch 'drm-fixes' of /home/airlied/kernel/linux-2.6 into drm-core-next

2010-10-18T23:48:34Z

Conflicts: drivers/gpu/drm/i915/intel_fb.c drivers/gpu/drm/radeon/r600_blit_kms.c drivers/gpu/drm/ttm/ttm_bo.c

drm/ttm: Fix two race conditions + fix busy codepaths

2010-10-05T23:04:43Z

This fixes a race pointed out by Dave Airlie where we don't take a buffer object about to be destroyed off the LRU lists properly. It also fixes a rare case where a buffer object could be destroyed in the middle of an accelerated eviction. The patch also adds a utility function that can be used to prematurely release GPU memory space usage of an object waiting to be destroyed. For example during eviction or swapout. The above mentioned commit didn't queue the buffer on the delayed destroy list under some rare circumstances. It also didn't completely honor the remove_all parameter. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=615505 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=591061 Signed-off-by: Thomas Hellstrom Signed-off-by: Dave Airlie

drm/ttm: restructure to allow driver to plug in alternate memory manager

2010-10-05T00:01:20Z

Nouveau will need this on GeForce 8 and up to account for the GPU reordering physical VRAM for some memory types. Reviewed-by: Jerome Glisse Acked-by: Thomas Hellström Signed-off-by: Ben Skeggs