From f0cd518206e1a47e57bc251e1faba9d38eadcc59 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 28 Oct 2016 13:58:43 +0100 Subject: [PATCH] drm/i915: Use lockless object free Having moved the locked phase of freeing an object to a separate worker, we can now declare to the core that we only need the unlocked variant of driver->gem_free_object, and can use the simple unreference internally. Signed-off-by: Chris Wilson Reviewed-by: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20161028125858.23563-20-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_drv.c | 2 +- drivers/gpu/drm/i915/i915_drv.h | 10 +-------- drivers/gpu/drm/i915/i915_gem.c | 30 ++++++++++++------------- drivers/gpu/drm/i915/i915_gem_tiling.c | 2 +- drivers/gpu/drm/i915/i915_gem_userptr.c | 4 ++-- drivers/gpu/drm/i915/intel_display.c | 6 ++--- drivers/gpu/drm/i915/intel_overlay.c | 4 ++-- drivers/gpu/drm/i915/intel_pm.c | 2 +- 8 files changed, 26 insertions(+), 34 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index b308f7173b6d..91cd7b296c0f 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -2575,7 +2575,7 @@ static struct drm_driver driver = { .set_busid = drm_pci_set_busid, .gem_close_object = i915_gem_close_object, - .gem_free_object = i915_gem_free_object, + .gem_free_object_unlocked = i915_gem_free_object, .gem_vm_ops = &i915_gem_vm_ops, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 6f648a3b96f4..c3c49bc4d2ac 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2404,19 +2404,12 @@ __attribute__((nonnull)) static inline void i915_gem_object_put(struct drm_i915_gem_object *obj) { - drm_gem_object_unreference(&obj->base); + __drm_gem_object_unreference(&obj->base); } __deprecated extern void drm_gem_object_unreference(struct drm_gem_object *); -__attribute__((nonnull)) -static inline void -i915_gem_object_put_unlocked(struct drm_i915_gem_object *obj) -{ - drm_gem_object_unreference_unlocked(&obj->base); -} - __deprecated extern void drm_gem_object_unreference_unlocked(struct drm_gem_object *); @@ -2511,7 +2504,6 @@ static inline struct i915_vma *i915_vma_get(struct i915_vma *vma) static inline void i915_vma_put(struct i915_vma *vma) { - lockdep_assert_held(&vma->vm->dev->struct_mutex); i915_gem_object_put(vma->obj); } diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 07b2eb6bc572..fdcbaab21fdd 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -617,7 +617,7 @@ i915_gem_create(struct drm_file *file, ret = drm_gem_handle_create(file, &obj->base, &handle); /* drop reference from allocate - handle holds it now */ - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); if (ret) return ret; @@ -1111,7 +1111,7 @@ i915_gem_pread_ioctl(struct drm_device *dev, void *data, i915_gem_object_unpin_pages(obj); out: - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return ret; } @@ -1444,7 +1444,7 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, i915_gem_object_unpin_pages(obj); err: - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return ret; } @@ -1520,7 +1520,7 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, MAX_SCHEDULE_TIMEOUT, to_rps_client(file)); if (err) - goto out_unlocked; + goto out; /* Flush and acquire obj->pages so that we are coherent through * direct access in memory with previous cached writes through @@ -1532,11 +1532,11 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, */ err = i915_gem_object_pin_pages(obj); if (err) - goto out_unlocked; + goto out; err = i915_mutex_lock_interruptible(dev); if (err) - goto out_pages; + goto out_unpin; if (read_domains & I915_GEM_DOMAIN_GTT) err = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); @@ -1551,10 +1551,10 @@ i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, if (write_domain != 0) intel_fb_obj_invalidate(obj, write_origin(obj, write_domain)); -out_pages: +out_unpin: i915_gem_object_unpin_pages(obj); -out_unlocked: - i915_gem_object_put_unlocked(obj); +out: + i915_gem_object_put(obj); return err; } @@ -1585,7 +1585,7 @@ i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, } } - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return err; } @@ -1631,7 +1631,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data, * pages from. */ if (!obj->base.filp) { - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return -EINVAL; } @@ -1643,7 +1643,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data, struct vm_area_struct *vma; if (down_write_killable(&mm->mmap_sem)) { - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return -EINTR; } vma = find_vma(mm, addr); @@ -1657,7 +1657,7 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data, /* This may race, but that's ok, it only gets set */ WRITE_ONCE(obj->frontbuffer_ggtt_origin, ORIGIN_CPU); } - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); if (IS_ERR((void *)addr)) return addr; @@ -2105,7 +2105,7 @@ i915_gem_mmap_gtt(struct drm_file *file, if (ret == 0) *offset = drm_vma_node_offset_addr(&obj->base.vma_node); - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return ret; } @@ -2932,7 +2932,7 @@ i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file) args->timeout_ns = 0; } - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return ret; } diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c index c63a9cf4da33..6395e62bd9e4 100644 --- a/drivers/gpu/drm/i915/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/i915_gem_tiling.c @@ -201,7 +201,7 @@ i915_gem_set_tiling(struct drm_device *dev, void *data, if (!i915_tiling_ok(dev, args->stride, obj->base.size, args->tiling_mode)) { - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return -EINVAL; } diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c index 6c8c7b36f7fc..c30d04f64670 100644 --- a/drivers/gpu/drm/i915/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/i915_gem_userptr.c @@ -546,7 +546,7 @@ __i915_gem_userptr_get_pages_worker(struct work_struct *_work) release_pages(pvec, pinned, 0); drm_free_large(pvec); - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); put_task_struct(work->task); kfree(work); } @@ -806,7 +806,7 @@ i915_gem_userptr_ioctl(struct drm_device *dev, void *data, struct drm_file *file ret = drm_gem_handle_create(file, &obj->base, &handle); /* drop reference from allocate - handle holds it now */ - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); if (ret) return ret; diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index e4800b81c59e..87135d93e828 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -11051,7 +11051,7 @@ intel_framebuffer_create_for_mode(struct drm_device *dev, fb = intel_framebuffer_create(dev, &mode_cmd, obj); if (IS_ERR(fb)) - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return fb; } @@ -12360,7 +12360,7 @@ cleanup: crtc->primary->fb = old_fb; update_state_fb(crtc->primary); - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); drm_framebuffer_unreference(work->old_fb); spin_lock_irq(&dev->event_lock); @@ -15934,7 +15934,7 @@ intel_user_framebuffer_create(struct drm_device *dev, fb = intel_framebuffer_create(dev, &mode_cmd, obj); if (IS_ERR(fb)) - i915_gem_object_put_unlocked(obj); + i915_gem_object_put(obj); return fb; } diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c index 25bcd4a178d3..fd0e4dac7cc1 100644 --- a/drivers/gpu/drm/i915/intel_overlay.c +++ b/drivers/gpu/drm/i915/intel_overlay.c @@ -1222,7 +1222,7 @@ int intel_overlay_put_image_ioctl(struct drm_device *dev, void *data, out_unlock: mutex_unlock(&dev->struct_mutex); drm_modeset_unlock_all(dev); - i915_gem_object_put_unlocked(new_bo); + i915_gem_object_put(new_bo); out_free: kfree(params); @@ -1466,7 +1466,7 @@ void intel_cleanup_overlay(struct drm_i915_private *dev_priv) * hardware should be off already */ WARN_ON(dev_priv->overlay->active); - i915_gem_object_put_unlocked(dev_priv->overlay->reg_bo); + i915_gem_object_put(dev_priv->overlay->reg_bo); kfree(dev_priv->overlay); } diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 6f19e60628ed..b544248cfdee 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5878,7 +5878,7 @@ static void valleyview_cleanup_pctx(struct drm_i915_private *dev_priv) if (WARN_ON(!dev_priv->vlv_pctx)) return; - i915_gem_object_put_unlocked(dev_priv->vlv_pctx); + i915_gem_object_put(dev_priv->vlv_pctx); dev_priv->vlv_pctx = NULL; } -- 2.39.5