mirror of https://gitee.com/openkylin/linux.git
eba67093f5
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> |
||
|---|---|---|
| .. | ||
| ttm_bo_api.h | ||
| ttm_bo_driver.h | ||
| ttm_execbuf_util.h | ||
| ttm_lock.h | ||
| ttm_memory.h | ||
| ttm_module.h | ||
| ttm_object.h | ||
| ttm_page_alloc.h | ||
| ttm_placement.h | ||