diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 52 |
1 files changed, 49 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index e1de50780ed5..4bc8fdb94019 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -420,7 +420,7 @@ i915_gem_gtt_pread(struct drm_i915_gem_object *obj, GEM_BUG_ON(!drm_mm_node_allocated(&node)); } - ret = i915_gem_object_lock_interruptible(obj); + ret = i915_gem_object_lock_interruptible(obj, NULL); if (ret) goto out_unpin; @@ -619,7 +619,7 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj, GEM_BUG_ON(!drm_mm_node_allocated(&node)); } - ret = i915_gem_object_lock_interruptible(obj); + ret = i915_gem_object_lock_interruptible(obj, NULL); if (ret) goto out_unpin; @@ -1290,7 +1290,7 @@ int i915_gem_freeze_late(struct drm_i915_private *i915) i915_gem_drain_freed_objects(i915); list_for_each_entry(obj, &i915->mm.shrink_list, mm.link) { - i915_gem_object_lock(obj); + i915_gem_object_lock(obj, NULL); drm_WARN_ON(&i915->drm, i915_gem_object_set_to_cpu_domain(obj, true)); i915_gem_object_unlock(obj); @@ -1326,6 +1326,52 @@ int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file) return ret; } +void i915_gem_ww_ctx_init(struct i915_gem_ww_ctx *ww, bool intr) +{ + ww_acquire_init(&ww->ctx, &reservation_ww_class); + INIT_LIST_HEAD(&ww->obj_list); + ww->intr = intr; + ww->contended = NULL; +} + +static void i915_gem_ww_ctx_unlock_all(struct i915_gem_ww_ctx *ww) +{ + struct drm_i915_gem_object *obj; + + while ((obj = list_first_entry_or_null(&ww->obj_list, struct drm_i915_gem_object, obj_link))) { + list_del(&obj->obj_link); + i915_gem_object_unlock(obj); + } +} + +void i915_gem_ww_ctx_fini(struct i915_gem_ww_ctx *ww) +{ + i915_gem_ww_ctx_unlock_all(ww); + WARN_ON(ww->contended); + ww_acquire_fini(&ww->ctx); +} + +int __must_check i915_gem_ww_ctx_backoff(struct i915_gem_ww_ctx *ww) +{ + int ret = 0; + + if (WARN_ON(!ww->contended)) + return -EINVAL; + + i915_gem_ww_ctx_unlock_all(ww); + if (ww->intr) + ret = dma_resv_lock_slow_interruptible(ww->contended->base.resv, &ww->ctx); + else + dma_resv_lock_slow(ww->contended->base.resv, &ww->ctx); + + if (!ret) + list_add_tail(&ww->contended->obj_link, &ww->obj_list); + + ww->contended = NULL; + + return ret; +} + #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) #include "selftests/mock_gem_device.c" #include "selftests/i915_gem.c" |