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drm/v3d: Clean up the reservation object setup. 

The extra to_v3d_bo() calls came from copying this from the vc4
driver, which stored the cma gem object in the structs.

v2: Fix an unused var warning

Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20181108161654.19888-4-eric@anholt.net
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com> (v1)
This commit is contained in:
Eric Anholt 2018-11-08 08:16:53 -08:00
parent e90e45f6bd
commit 8f1cd82664
1 changed files with 11 additions and 22 deletions
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33
drivers/gpu/drm/v3d/v3d_gem.c
View File

@ -210,14 +210,11 @@ static void
v3d_attach_object_fences(struct v3d_exec_info *exec)
{
struct dma_fence *out_fence = exec->render_done_fence;
struct v3d_bo *bo;
int i;
for (i = 0; i < exec->bo_count; i++) {
bo = to_v3d_bo(&exec->bo[i]->base);
/* XXX: Use shared fences for read-only objects. */
reservation_object_add_excl_fence(bo->resv, out_fence);
reservation_object_add_excl_fence(exec->bo[i]->resv, out_fence);
}
}
@ -228,11 +225,8 @@ v3d_unlock_bo_reservations(struct drm_device *dev,
{
int i;
for (i = 0; i < exec->bo_count; i++) {
struct v3d_bo *bo = to_v3d_bo(&exec->bo[i]->base);
ww_mutex_unlock(&bo->resv->lock);
}
for (i = 0; i < exec->bo_count; i++)
ww_mutex_unlock(&exec->bo[i]->resv->lock);
ww_acquire_fini(acquire_ctx);
}
@ -251,13 +245,13 @@ v3d_lock_bo_reservations(struct drm_device *dev,
{
int contended_lock = -1;
int i, ret;
struct v3d_bo *bo;
ww_acquire_init(acquire_ctx, &reservation_ww_class);
retry:
if (contended_lock != -1) {
bo = to_v3d_bo(&exec->bo[contended_lock]->base);
struct v3d_bo *bo = exec->bo[contended_lock];
ret = ww_mutex_lock_slow_interruptible(&bo->resv->lock,
acquire_ctx);
if (ret) {
@ -270,19 +264,16 @@ v3d_lock_bo_reservations(struct drm_device *dev,
if (i == contended_lock)
continue;
bo = to_v3d_bo(&exec->bo[i]->base);
ret = ww_mutex_lock_interruptible(&bo->resv->lock, acquire_ctx);
ret = ww_mutex_lock_interruptible(&exec->bo[i]->resv->lock,
acquire_ctx);
if (ret) {
int j;
for (j = 0; j < i; j++) {
bo = to_v3d_bo(&exec->bo[j]->base);
ww_mutex_unlock(&bo->resv->lock);
}
for (j = 0; j < i; j++)
ww_mutex_unlock(&exec->bo[j]->resv->lock);
if (contended_lock != -1 && contended_lock >= i) {
bo = to_v3d_bo(&exec->bo[contended_lock]->base);
struct v3d_bo *bo = exec->bo[contended_lock];
ww_mutex_unlock(&bo->resv->lock);
}
@ -303,9 +294,7 @@ v3d_lock_bo_reservations(struct drm_device *dev,
* before we commit the CL to the hardware.
*/
for (i = 0; i < exec->bo_count; i++) {
bo = to_v3d_bo(&exec->bo[i]->base);
ret = reservation_object_reserve_shared(bo->resv, 1);
ret = reservation_object_reserve_shared(exec->bo[i]->resv, 1);
if (ret) {
v3d_unlock_bo_reservations(dev, exec, acquire_ctx);
return ret;