linux-sg2042/include/drm/ttm
Thomas Hellstrom eba67093f5 drm/ttm: Fix up io_mem_reserve / io_mem_free calling
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 <thellstrom@vmware.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-11-22 13:25:22 +10:00
..
ttm_bo_api.h drm/ttm: Fix up io_mem_reserve / io_mem_free calling 2010-11-22 13:25:22 +10:00
ttm_bo_driver.h drm/ttm: Fix up io_mem_reserve / io_mem_free calling 2010-11-22 13:25:22 +10:00
ttm_execbuf_util.h drm/ttm/vmwgfx: Have TTM manage the validation sequence. 2010-11-22 13:25:21 +10:00
ttm_lock.h drm/ttm: Add ttm lock functionality. 2009-12-07 15:22:03 +10:00
ttm_memory.h drm/ttm: Fix build failure due to missing struct page 2009-12-04 09:11:16 +10:00
ttm_module.h drm: move ttm global code to core drm 2010-08-04 09:46:06 +10:00
ttm_object.h drm/ttm: Add more driver type enums 2009-12-15 08:38:18 +10:00
ttm_page_alloc.h drm/ttm: Allocate the page pool manager in the heap. 2010-07-07 12:14:11 +10:00
ttm_placement.h drm: Add the TTM GPU memory manager subsystem. 2009-06-15 09:37:57 +10:00