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author | Qiang Yu <yuq825@gmail.com> | 2019-10-10 22:01:51 +0800 |
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committer | Qiang Yu <yuq825@gmail.com> | 2019-10-17 23:41:54 +0800 |
commit | e305b8b6d1ff227779804e4695b8c5cb6864a620 (patch) | |
tree | a7d42ad5f28062111203a8b93fcc47e8de01362b /drivers/gpu/drm/lima | |
parent | d61dd248ddadf85b3222b3f63c3d268fcc24beb4 (diff) | |
download | linux-e305b8b6d1ff227779804e4695b8c5cb6864a620.tar.gz linux-e305b8b6d1ff227779804e4695b8c5cb6864a620.tar.bz2 linux-e305b8b6d1ff227779804e4695b8c5cb6864a620.zip |
drm/lima: use drm_gem_(un)lock_reservations
Simplify the driver code with DRM GEM helper function.
v2:
improve commit comment.
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191010140152.17747-3-yuq825@gmail.com
Diffstat (limited to 'drivers/gpu/drm/lima')
-rw-r--r-- | drivers/gpu/drm/lima/lima_gem.c | 64 |
1 files changed, 6 insertions, 58 deletions
diff --git a/drivers/gpu/drm/lima/lima_gem.c b/drivers/gpu/drm/lima/lima_gem.c index 4a62455fa0aa..d0059d8c97d8 100644 --- a/drivers/gpu/drm/lima/lima_gem.c +++ b/drivers/gpu/drm/lima/lima_gem.c @@ -147,61 +147,6 @@ static int lima_gem_sync_bo(struct lima_sched_task *task, struct lima_bo *bo, return drm_gem_fence_array_add_implicit(&task->deps, &bo->base.base, write); } -static int lima_gem_lock_bos(struct lima_bo **bos, u32 nr_bos, - struct ww_acquire_ctx *ctx) -{ - int i, ret = 0, contended, slow_locked = -1; - - ww_acquire_init(ctx, &reservation_ww_class); - -retry: - for (i = 0; i < nr_bos; i++) { - if (i == slow_locked) { - slow_locked = -1; - continue; - } - - ret = ww_mutex_lock_interruptible(&lima_bo_resv(bos[i])->lock, ctx); - if (ret < 0) { - contended = i; - goto err; - } - } - - ww_acquire_done(ctx); - return 0; - -err: - for (i--; i >= 0; i--) - ww_mutex_unlock(&lima_bo_resv(bos[i])->lock); - - if (slow_locked >= 0) - ww_mutex_unlock(&lima_bo_resv(bos[slow_locked])->lock); - - if (ret == -EDEADLK) { - /* we lost out in a seqno race, lock and retry.. */ - ret = ww_mutex_lock_slow_interruptible( - &lima_bo_resv(bos[contended])->lock, ctx); - if (!ret) { - slow_locked = contended; - goto retry; - } - } - ww_acquire_fini(ctx); - - return ret; -} - -static void lima_gem_unlock_bos(struct lima_bo **bos, u32 nr_bos, - struct ww_acquire_ctx *ctx) -{ - int i; - - for (i = 0; i < nr_bos; i++) - ww_mutex_unlock(&lima_bo_resv(bos[i])->lock); - ww_acquire_fini(ctx); -} - static int lima_gem_add_deps(struct drm_file *file, struct lima_submit *submit) { int i, err; @@ -267,7 +212,8 @@ int lima_gem_submit(struct drm_file *file, struct lima_submit *submit) bos[i] = bo; } - err = lima_gem_lock_bos(bos, submit->nr_bos, &ctx); + err = drm_gem_lock_reservations((struct drm_gem_object **)bos, + submit->nr_bos, &ctx); if (err) goto err_out0; @@ -300,7 +246,8 @@ int lima_gem_submit(struct drm_file *file, struct lima_submit *submit) dma_resv_add_shared_fence(lima_bo_resv(bos[i]), fence); } - lima_gem_unlock_bos(bos, submit->nr_bos, &ctx); + drm_gem_unlock_reservations((struct drm_gem_object **)bos, + submit->nr_bos, &ctx); for (i = 0; i < submit->nr_bos; i++) drm_gem_object_put_unlocked(&bos[i]->base.base); @@ -317,7 +264,8 @@ int lima_gem_submit(struct drm_file *file, struct lima_submit *submit) err_out2: lima_sched_task_fini(submit->task); err_out1: - lima_gem_unlock_bos(bos, submit->nr_bos, &ctx); + drm_gem_unlock_reservations((struct drm_gem_object **)bos, + submit->nr_bos, &ctx); err_out0: for (i = 0; i < submit->nr_bos; i++) { if (!bos[i]) |