diff options
| author | Thomas Hellstrom <thellstrom@vmware.com> | 2010-11-17 12:28:27 +0000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-11-22 13:25:15 +1000 |
| commit | 68c4fa31aa52765314b4285a7835368ea35b509c (patch) | |
| tree | 483c669e7308e10205ec675e8bff0cb8098add02 /drivers/gpu/drm/ttm/ttm_execbuf_util.c | |
| parent | 2357cbe5f4ca8a52329c2c2a26b68839870d5d43 (diff) | |
| download | linux-68c4fa31aa52765314b4285a7835368ea35b509c.tar.bz2 | |
drm/ttm: Optimize ttm_eu_backoff_reservation
Avoid the ttm_bo_unreserve() spinlocks by calling
ttm_eu_backoff_reservation_locked under the lru spinlock.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jerome Glisse <j.glisse@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_execbuf_util.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_execbuf_util.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c index 201a71d111ec..7dcc6470e2f5 100644 --- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c +++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c @@ -101,15 +101,16 @@ static int ttm_eu_wait_unreserved_locked(struct list_head *list, void ttm_eu_backoff_reservation(struct list_head *list) { struct ttm_validate_buffer *entry; + struct ttm_bo_global *glob; - list_for_each_entry(entry, list, head) { - struct ttm_buffer_object *bo = entry->bo; - if (!entry->reserved) - continue; + if (list_empty(list)) + return; - entry->reserved = false; - ttm_bo_unreserve(bo); - } + entry = list_first_entry(list, struct ttm_validate_buffer, head); + glob = entry->bo->glob; + spin_lock(&glob->lru_lock); + ttm_eu_backoff_reservation_locked(list); + spin_unlock(&glob->lru_lock); } EXPORT_SYMBOL(ttm_eu_backoff_reservation); |