[PATCH 5/5] drm/ttm: kill fence_lock

No users are left, kill it off! :D

Signed-off-by: Maarten Lankhorst maarten.lankhorst@canonical.com --- drivers/gpu/drm/nouveau/nouveau_bo.c | 23 ++++------ drivers/gpu/drm/nouveau/nouveau_display.c | 6 +-- drivers/gpu/drm/nouveau/nouveau_gem.c | 16 +------ drivers/gpu/drm/qxl/qxl_cmd.c | 2 - drivers/gpu/drm/qxl/qxl_fence.c | 4 -- drivers/gpu/drm/qxl/qxl_object.h | 2 - drivers/gpu/drm/qxl/qxl_release.c | 2 - drivers/gpu/drm/radeon/radeon_display.c | 2 - drivers/gpu/drm/radeon/radeon_object.c | 2 - drivers/gpu/drm/ttm/ttm_bo.c | 75 ++++++++----------------------- drivers/gpu/drm/ttm/ttm_bo_util.c | 5 --- drivers/gpu/drm/ttm/ttm_bo_vm.c | 3 -- drivers/gpu/drm/ttm/ttm_execbuf_util.c | 2 - drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 3 -- drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 2 - include/drm/ttm/ttm_bo_api.h | 5 +-- include/drm/ttm/ttm_bo_driver.h | 3 -- 17 files changed, 30 insertions(+), 127 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 38444ba22f0d..8e760b74cf0b 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -1454,26 +1454,19 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) ttm_pool_unpopulate(ttm); }

+static void +nouveau_bo_fence_unref(void **sync_obj) +{ + nouveau_fence_unref((struct nouveau_fence **)sync_obj); +} + void nouveau_bo_fence(struct nouveau_bo *nvbo, struct nouveau_fence *fence) { - struct nouveau_fence *new_fence = nouveau_fence_ref(fence); - struct nouveau_fence *old_fence = NULL; - lockdep_assert_held(&nvbo->bo.resv->lock.base);

- spin_lock(&nvbo->bo.bdev->fence_lock); - old_fence = nvbo->bo.sync_obj; - nvbo->bo.sync_obj = new_fence; - spin_unlock(&nvbo->bo.bdev->fence_lock); - - nouveau_fence_unref(&old_fence); -} - -static void -nouveau_bo_fence_unref(void **sync_obj) -{ - nouveau_fence_unref((struct nouveau_fence **)sync_obj); + nouveau_bo_fence_unref(&nvbo->bo.sync_obj); + nvbo->bo.sync_obj = nouveau_fence_ref(fence); }

static void * diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c index 9d3892a1af96..e3117c78ea95 100644 --- a/drivers/gpu/drm/nouveau/nouveau_display.c +++ b/drivers/gpu/drm/nouveau/nouveau_display.c @@ -615,11 +615,7 @@ nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb, goto fail_unpin;

/* synchronise rendering channel with the kernel's channel */ - spin_lock(&new_bo->bo.bdev->fence_lock); - fence = nouveau_fence_ref(new_bo->bo.sync_obj); - spin_unlock(&new_bo->bo.bdev->fence_lock); - ret = nouveau_fence_sync(fence, chan); - nouveau_fence_unref(&fence); + ret = nouveau_fence_sync(new_bo->bo.sync_obj, chan);

if (ret) { ttm_bo_unreserve(&new_bo->bo); diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index 24e9c58da8aa..fa9364fc0a66 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -105,9 +105,7 @@ nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma) list_del(&vma->head);

if (mapped) { - spin_lock(&nvbo->bo.bdev->fence_lock); fence = nouveau_fence_ref(nvbo->bo.sync_obj); - spin_unlock(&nvbo->bo.bdev->fence_lock); }

if (fence) { @@ -434,17 +432,11 @@ retry: static int validate_sync(struct nouveau_channel *chan, struct nouveau_bo *nvbo) { - struct nouveau_fence *fence = NULL; + struct nouveau_fence *fence = nvbo->bo.sync_obj; int ret = 0;

- spin_lock(&nvbo->bo.bdev->fence_lock); - fence = nouveau_fence_ref(nvbo->bo.sync_obj); - spin_unlock(&nvbo->bo.bdev->fence_lock); - - if (fence) { + if (fence) ret = nouveau_fence_sync(fence, chan); - nouveau_fence_unref(&fence); - }

return ret; } @@ -669,9 +661,7 @@ nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli, data |= r->vor; }

- spin_lock(&nvbo->bo.bdev->fence_lock); ret = ttm_bo_wait(&nvbo->bo, false, false, false); - spin_unlock(&nvbo->bo.bdev->fence_lock); if (ret) { NV_ERROR(cli, "reloc wait_idle failed: %d\n", ret); break; @@ -904,11 +894,9 @@ nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,

ret = ttm_bo_reserve(&nvbo->bo, true, false, false, 0); if (!ret) { - spin_lock(&nvbo->bo.bdev->fence_lock); ret = ttm_bo_wait(&nvbo->bo, true, true, true); if (!no_wait && ret) fence = nouveau_fence_ref(nvbo->bo.sync_obj); - spin_unlock(&nvbo->bo.bdev->fence_lock);

ttm_bo_unreserve(&nvbo->bo); } diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c index eb89653a7a17..45fad7b45486 100644 --- a/drivers/gpu/drm/qxl/qxl_cmd.c +++ b/drivers/gpu/drm/qxl/qxl_cmd.c @@ -628,9 +628,7 @@ static int qxl_reap_surf(struct qxl_device *qdev, struct qxl_bo *surf, bool stal if (stall) mutex_unlock(&qdev->surf_evict_mutex);

- spin_lock(&surf->tbo.bdev->fence_lock); ret = ttm_bo_wait(&surf->tbo, true, true, !stall); - spin_unlock(&surf->tbo.bdev->fence_lock);

if (stall) mutex_lock(&qdev->surf_evict_mutex); diff --git a/drivers/gpu/drm/qxl/qxl_fence.c b/drivers/gpu/drm/qxl/qxl_fence.c index ae59e91cfb9a..c7248418117d 100644 --- a/drivers/gpu/drm/qxl/qxl_fence.c +++ b/drivers/gpu/drm/qxl/qxl_fence.c @@ -60,9 +60,6 @@ int qxl_fence_remove_release(struct qxl_fence *qfence, uint32_t rel_id) { void *ret; int retval = 0; - struct qxl_bo *bo = container_of(qfence, struct qxl_bo, fence); - - spin_lock(&bo->tbo.bdev->fence_lock);

ret = radix_tree_delete(&qfence->tree, rel_id); if (ret == qfence) @@ -71,7 +68,6 @@ int qxl_fence_remove_release(struct qxl_fence *qfence, uint32_t rel_id) DRM_DEBUG("didn't find fence in radix tree for %d\n", rel_id); retval = -ENOENT; } - spin_unlock(&bo->tbo.bdev->fence_lock); return retval; }

diff --git a/drivers/gpu/drm/qxl/qxl_object.h b/drivers/gpu/drm/qxl/qxl_object.h index d458a140c024..98395b223ad0 100644 --- a/drivers/gpu/drm/qxl/qxl_object.h +++ b/drivers/gpu/drm/qxl/qxl_object.h @@ -76,12 +76,10 @@ static inline int qxl_bo_wait(struct qxl_bo *bo, u32 *mem_type, } return r; } - spin_lock(&bo->tbo.bdev->fence_lock); if (mem_type) *mem_type = bo->tbo.mem.mem_type; if (bo->tbo.sync_obj) r = ttm_bo_wait(&bo->tbo, true, true, no_wait); - spin_unlock(&bo->tbo.bdev->fence_lock); ttm_bo_unreserve(&bo->tbo); return r; } diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c index 6f71cadc7c9b..44f43e6adc81 100644 --- a/drivers/gpu/drm/qxl/qxl_release.c +++ b/drivers/gpu/drm/qxl/qxl_release.c @@ -337,7 +337,6 @@ void qxl_release_fence_buffer_objects(struct qxl_release *release) glob = bo->glob;

spin_lock(&glob->lru_lock); - spin_lock(&bdev->fence_lock);

list_for_each_entry(entry, &release->bos, head) { bo = entry->bo; @@ -351,7 +350,6 @@ void qxl_release_fence_buffer_objects(struct qxl_release *release) ttm_bo_add_to_lru(bo); ww_mutex_unlock(&bo->resv->lock); } - spin_unlock(&bdev->fence_lock); spin_unlock(&glob->lru_lock); ww_acquire_fini(&release->ticket); } diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 7b253815a323..f2db8c6606e8 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -380,10 +380,8 @@ static int radeon_crtc_page_flip(struct drm_crtc *crtc, obj = new_radeon_fb->obj; rbo = gem_to_radeon_bo(obj);

- spin_lock(&rbo->tbo.bdev->fence_lock); if (rbo->tbo.sync_obj) work->fence = radeon_fence_ref(rbo->tbo.sync_obj); - spin_unlock(&rbo->tbo.bdev->fence_lock);

INIT_WORK(&work->work, radeon_unpin_work_func);

diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index a3b92bfbe81b..f1389173f9ac 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -612,12 +612,10 @@ int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, bool no_wait) r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0); if (unlikely(r != 0)) return r; - spin_lock(&bo->tbo.bdev->fence_lock); if (mem_type) *mem_type = bo->tbo.mem.mem_type; if (bo->tbo.sync_obj) r = ttm_bo_wait(&bo->tbo, true, true, no_wait); - spin_unlock(&bo->tbo.bdev->fence_lock); ttm_bo_unreserve(&bo->tbo); return r; } diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index a8cffb6ee1f3..df1725fa4b9d 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -412,24 +412,20 @@ static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) spin_lock(&glob->lru_lock); ret = ttm_bo_reserve_nolru(bo, false, true, false, 0);

- spin_lock(&bdev->fence_lock); - (void) ttm_bo_wait(bo, false, false, true); - if (!ret && !bo->sync_obj) { - spin_unlock(&bdev->fence_lock); - put_count = ttm_bo_del_from_lru(bo); + if (!ret) { + (void) ttm_bo_wait(bo, false, false, true);

- spin_unlock(&glob->lru_lock); - ttm_bo_cleanup_memtype_use(bo); + if (!bo->sync_obj) { + put_count = ttm_bo_del_from_lru(bo);

- ttm_bo_list_ref_sub(bo, put_count, true); + spin_unlock(&glob->lru_lock); + ttm_bo_cleanup_memtype_use(bo);

- return; - } - if (bo->sync_obj) - sync_obj = driver->sync_obj_ref(bo->sync_obj); - spin_unlock(&bdev->fence_lock); + ttm_bo_list_ref_sub(bo, put_count, true);

- if (!ret) { + return; + } + sync_obj = driver->sync_obj_ref(bo->sync_obj);

/* * Make NO_EVICT bos immediately available to @@ -478,7 +474,6 @@ static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, int put_count; int ret;

- spin_lock(&bdev->fence_lock); ret = ttm_bo_wait(bo, false, false, true);

if (ret && !no_wait_gpu) { @@ -490,7 +485,6 @@ static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, * no new sync objects can be attached. */ sync_obj = driver->sync_obj_ref(bo->sync_obj); - spin_unlock(&bdev->fence_lock);

ww_mutex_unlock(&bo->resv->lock); spin_unlock(&glob->lru_lock); @@ -520,11 +514,9 @@ static int ttm_bo_cleanup_refs_and_unlock(struct ttm_buffer_object *bo, * remove sync_obj with ttm_bo_wait, the wait should be * finished, and no new wait object should have been added. */ - spin_lock(&bdev->fence_lock); ret = ttm_bo_wait(bo, false, false, true); WARN_ON(ret); } - spin_unlock(&bdev->fence_lock);

if (ret || unlikely(list_empty(&bo->ddestroy))) { ww_mutex_unlock(&bo->resv->lock); @@ -662,9 +654,7 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, struct ttm_placement placement; int ret = 0;

- spin_lock(&bdev->fence_lock); ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); - spin_unlock(&bdev->fence_lock);

if (unlikely(ret != 0)) { if (ret != -ERESTARTSYS) { @@ -961,7 +951,6 @@ int ttm_bo_move_buffer(struct ttm_buffer_object *bo, { int ret = 0; struct ttm_mem_reg mem; - struct ttm_bo_device *bdev = bo->bdev;

lockdep_assert_held(&bo->resv->lock.base);

@@ -970,9 +959,7 @@ int ttm_bo_move_buffer(struct ttm_buffer_object *bo, * Have the driver move function wait for idle when necessary, * instead of doing it here. */ - spin_lock(&bdev->fence_lock); ret = ttm_bo_wait(bo, false, interruptible, no_wait_gpu); - spin_unlock(&bdev->fence_lock); if (ret) return ret; mem.num_pages = bo->num_pages; @@ -1471,7 +1458,6 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev, bdev->glob = glob; bdev->need_dma32 = need_dma32; bdev->val_seq = 0; - spin_lock_init(&bdev->fence_lock); mutex_lock(&glob->device_list_mutex); list_add_tail(&bdev->device_list, &glob->device_list); mutex_unlock(&glob->device_list_mutex); @@ -1529,7 +1515,6 @@ int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy, bool interruptible, bool no_wait) { struct ttm_bo_driver *driver = bo->bdev->driver; - struct ttm_bo_device *bdev = bo->bdev; void *sync_obj; int ret = 0;

@@ -1538,53 +1523,33 @@ int ttm_bo_wait(struct ttm_buffer_object *bo, if (likely(bo->sync_obj == NULL)) return 0;

- while (bo->sync_obj) { - + if (bo->sync_obj) { if (driver->sync_obj_signaled(bo->sync_obj)) { - void *tmp_obj = bo->sync_obj; - bo->sync_obj = NULL; + driver->sync_obj_unref(&bo->sync_obj); clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); - spin_unlock(&bdev->fence_lock); - driver->sync_obj_unref(&tmp_obj); - spin_lock(&bdev->fence_lock); - continue; + return 0; }

if (no_wait) return -EBUSY;

sync_obj = driver->sync_obj_ref(bo->sync_obj); - spin_unlock(&bdev->fence_lock); ret = driver->sync_obj_wait(sync_obj, lazy, interruptible); - if (unlikely(ret != 0)) { - driver->sync_obj_unref(&sync_obj); - spin_lock(&bdev->fence_lock); - return ret; - } - spin_lock(&bdev->fence_lock); - if (likely(bo->sync_obj == sync_obj)) { - void *tmp_obj = bo->sync_obj; - bo->sync_obj = NULL; + + if (likely(ret == 0)) { clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); - spin_unlock(&bdev->fence_lock); - driver->sync_obj_unref(&sync_obj); - driver->sync_obj_unref(&tmp_obj); - spin_lock(&bdev->fence_lock); - } else { - spin_unlock(&bdev->fence_lock); - driver->sync_obj_unref(&sync_obj); - spin_lock(&bdev->fence_lock); + driver->sync_obj_unref(&bo->sync_obj); } + driver->sync_obj_unref(&sync_obj); } - return 0; + return ret; } EXPORT_SYMBOL(ttm_bo_wait);

int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) { - struct ttm_bo_device *bdev = bo->bdev; int ret = 0;

/* @@ -1594,9 +1559,7 @@ int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) ret = ttm_bo_reserve(bo, true, no_wait, false, 0); if (unlikely(ret != 0)) return ret; - spin_lock(&bdev->fence_lock); ret = ttm_bo_wait(bo, false, true, no_wait); - spin_unlock(&bdev->fence_lock); if (likely(ret == 0)) atomic_inc(&bo->cpu_writers); ttm_bo_unreserve(bo); @@ -1653,9 +1616,7 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) * Wait for GPU, then move to system cached. */

- spin_lock(&bo->bdev->fence_lock); ret = ttm_bo_wait(bo, false, false, false); - spin_unlock(&bo->bdev->fence_lock);

if (unlikely(ret != 0)) goto out; diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 406152152315..f3d12b3fd603 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -466,12 +466,10 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, drm_vma_node_reset(&fbo->vma_node); atomic_set(&fbo->cpu_writers, 0);

- spin_lock(&bdev->fence_lock); if (bo->sync_obj) fbo->sync_obj = driver->sync_obj_ref(bo->sync_obj); else fbo->sync_obj = NULL; - spin_unlock(&bdev->fence_lock); kref_init(&fbo->list_kref); kref_init(&fbo->kref); fbo->destroy = &ttm_transfered_destroy; @@ -657,7 +655,6 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, struct ttm_buffer_object *ghost_obj; void *tmp_obj = NULL;

- spin_lock(&bdev->fence_lock); if (bo->sync_obj) { tmp_obj = bo->sync_obj; bo->sync_obj = NULL; @@ -665,7 +662,6 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, bo->sync_obj = driver->sync_obj_ref(sync_obj); if (evict) { ret = ttm_bo_wait(bo, false, false, false); - spin_unlock(&bdev->fence_lock); if (tmp_obj) driver->sync_obj_unref(&tmp_obj); if (ret) @@ -688,7 +684,6 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, */

set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); - spin_unlock(&bdev->fence_lock); if (tmp_obj) driver->sync_obj_unref(&tmp_obj);

diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 6440eeac22d2..15d63e4ca6f1 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -45,10 +45,8 @@ static int ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo, struct vm_area_struct *vma, struct vm_fault *vmf) { - struct ttm_bo_device *bdev = bo->bdev; int ret = 0;

- spin_lock(&bdev->fence_lock); if (likely(!test_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags))) goto out_unlock;

@@ -82,7 +80,6 @@ static int ttm_bo_vm_fault_idle(struct ttm_buffer_object *bo, VM_FAULT_NOPAGE;

out_unlock: - spin_unlock(&bdev->fence_lock); return ret; }

diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c index ec36206da95a..bedb3fba4493 100644 --- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c +++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c @@ -181,7 +181,6 @@ void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket, glob = bo->glob;

spin_lock(&glob->lru_lock); - spin_lock(&bdev->fence_lock);

list_for_each_entry(entry, list, head) { bo = entry->bo; @@ -190,7 +189,6 @@ void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket, ttm_bo_add_to_lru(bo); ww_mutex_unlock(&bo->resv->lock); } - spin_unlock(&bdev->fence_lock); spin_unlock(&glob->lru_lock); if (ticket) ww_acquire_fini(ticket); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index c7a549694e59..6d7628b5cc22 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -262,13 +262,10 @@ static void vmw_dummy_query_bo_prepare(struct vmw_private *dev_priv) volatile SVGA3dQueryResult *result; bool dummy; int ret; - struct ttm_bo_device *bdev = &dev_priv->bdev; struct ttm_buffer_object *bo = dev_priv->dummy_query_bo;

ttm_bo_reserve(bo, false, false, false, 0); - spin_lock(&bdev->fence_lock); ret = ttm_bo_wait(bo, false, false, false); - spin_unlock(&bdev->fence_lock); if (unlikely(ret != 0)) (void) vmw_fallback_wait(dev_priv, false, true, 0, false, 10*HZ); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c index e7a73f651a5d..6055deedd2a7 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c @@ -1273,12 +1273,10 @@ void vmw_fence_single_bo(struct ttm_buffer_object *bo, else driver->sync_obj_ref(fence);

- spin_lock(&bdev->fence_lock);

old_fence_obj = bo->sync_obj; bo->sync_obj = fence;

- spin_unlock(&bdev->fence_lock);

if (old_fence_obj) vmw_fence_obj_unreference(&old_fence_obj); diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index ee127ec33c60..f34d59b67218 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -227,10 +227,7 @@ struct ttm_buffer_object { struct list_head io_reserve_lru;

/** - * Members protected by struct buffer_object_device::fence_lock - * In addition, setting sync_obj to anything else - * than NULL requires bo::reserved to be held. This allows for - * checking NULL while reserved but not holding the mentioned lock. + * Members protected by a bo reservation. */

void *sync_obj; diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 8639c85d61c4..aed1a1f070ef 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -518,8 +518,6 @@ struct ttm_bo_global { * * @driver: Pointer to a struct ttm_bo_driver struct setup by the driver. * @man: An array of mem_type_managers. - * @fence_lock: Protects the synchronizing members on *all* bos belonging - * to this device. * @vma_manager: Address space manager * lru_lock: Spinlock that protects the buffer+device lru lists and * ddestroy lists. @@ -539,7 +537,6 @@ struct ttm_bo_device { struct ttm_bo_global *glob; struct ttm_bo_driver *driver; struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES]; - spinlock_t fence_lock;

/* * Protected by internal locks.