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| author | Michel Dänzer <michel.daenzer@amd.com> | 2017-01-25 17:21:31 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-15 10:20:16 +0800 |
| commit | e6d03fc74541fcfc49d82b5f4adbf912a180d5a0 (patch) | |
| tree | 6f33b1b9270105fb86972621d2b5b313acb59c09 | |
| parent | 0586602fc10fa1982b024235ee3e584c7f90504d (diff) | |
| download | linux-e6d03fc74541fcfc49d82b5f4adbf912a180d5a0.tar.gz linux-e6d03fc74541fcfc49d82b5f4adbf912a180d5a0.tar.bz2 linux-e6d03fc74541fcfc49d82b5f4adbf912a180d5a0.zip | |
drm/ttm: Make sure BOs being swapped out are cacheable
commit 239ac65fa5ffab71adf66e642750f940e7241d99 upstream.
The current caching state may not be tt_cached, even though the
placement contains TTM_PL_FLAG_CACHED, because placement can contain
multiple caching flags. Trying to swap out such a BO would trip up the
BUG_ON(ttm->caching_state != tt_cached);
in ttm_tt_swapout.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Christian König <christian.koenig@amd.com>.
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index d5063618efa7..86e3b233b722 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -1670,7 +1670,6 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) struct ttm_buffer_object *bo; int ret = -EBUSY; int put_count; - uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); spin_lock(&glob->lru_lock); list_for_each_entry(bo, &glob->swap_lru, swap) { @@ -1701,7 +1700,8 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) * Move to system cached */ - if ((bo->mem.placement & swap_placement) != swap_placement) { + if (bo->mem.mem_type != TTM_PL_SYSTEM || + bo->ttm->caching_state != tt_cached) { struct ttm_mem_reg evict_mem; evict_mem = bo->mem; |