diff options
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_gem.c | 38 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_cs.c | 18 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.c | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_uvd.c | 27 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 50 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_execbuf_util.c | 58 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 23 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 2 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_bo_driver.h | 32 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_execbuf_util.h | 13 |
13 files changed, 172 insertions, 112 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index 705470600e48..e35d4688711c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -277,10 +277,12 @@ struct validate_op { struct list_head vram_list; struct list_head gart_list; struct list_head both_list; + struct ww_acquire_ctx ticket; }; static void -validate_fini_list(struct list_head *list, struct nouveau_fence *fence) +validate_fini_list(struct list_head *list, struct nouveau_fence *fence, + struct ww_acquire_ctx *ticket) { struct list_head *entry, *tmp; struct nouveau_bo *nvbo; @@ -297,17 +299,24 @@ validate_fini_list(struct list_head *list, struct nouveau_fence *fence) list_del(&nvbo->entry); nvbo->reserved_by = NULL; - ttm_bo_unreserve(&nvbo->bo); + ttm_bo_unreserve_ticket(&nvbo->bo, ticket); drm_gem_object_unreference_unlocked(nvbo->gem); } } static void -validate_fini(struct validate_op *op, struct nouveau_fence* fence) +validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence) { - validate_fini_list(&op->vram_list, fence); - validate_fini_list(&op->gart_list, fence); - validate_fini_list(&op->both_list, fence); + validate_fini_list(&op->vram_list, fence, &op->ticket); + validate_fini_list(&op->gart_list, fence, &op->ticket); + validate_fini_list(&op->both_list, fence, &op->ticket); +} + +static void +validate_fini(struct validate_op *op, struct nouveau_fence *fence) +{ + validate_fini_no_ticket(op, fence); + ww_acquire_fini(&op->ticket); } static int @@ -317,13 +326,11 @@ validate_init(struct nouveau_channel *chan, struct drm_file *file_priv, { struct nouveau_cli *cli = nouveau_cli(file_priv); struct drm_device *dev = chan->drm->dev; - struct nouveau_drm *drm = nouveau_drm(dev); - uint32_t sequence; int trycnt = 0; int ret, i; struct nouveau_bo *res_bo = NULL; - sequence = atomic_add_return(1, &drm->ttm.validate_sequence); + ww_acquire_init(&op->ticket, &reservation_ww_class); retry: if (++trycnt > 100000) { NV_ERROR(cli, "%s failed and gave up.\n", __func__); @@ -338,6 +345,7 @@ retry: gem = drm_gem_object_lookup(dev, file_priv, b->handle); if (!gem) { NV_ERROR(cli, "Unknown handle 0x%08x\n", b->handle); + ww_acquire_done(&op->ticket); validate_fini(op, NULL); return -ENOENT; } @@ -352,21 +360,23 @@ retry: NV_ERROR(cli, "multiple instances of buffer %d on " "validation list\n", b->handle); drm_gem_object_unreference_unlocked(gem); + ww_acquire_done(&op->ticket); validate_fini(op, NULL); return -EINVAL; } - ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence); + ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket); if (ret) { - validate_fini(op, NULL); + validate_fini_no_ticket(op, NULL); if (unlikely(ret == -EAGAIN)) { - sequence = atomic_add_return(1, &drm->ttm.validate_sequence); ret = ttm_bo_reserve_slowpath(&nvbo->bo, true, - sequence); + &op->ticket); if (!ret) res_bo = nvbo; } if (unlikely(ret)) { + ww_acquire_done(&op->ticket); + ww_acquire_fini(&op->ticket); drm_gem_object_unreference_unlocked(gem); if (ret != -ERESTARTSYS) NV_ERROR(cli, "fail reserve\n"); @@ -390,6 +400,7 @@ retry: NV_ERROR(cli, "invalid valid domains: 0x%08x\n", b->valid_domains); list_add_tail(&nvbo->entry, &op->both_list); + ww_acquire_done(&op->ticket); validate_fini(op, NULL); return -EINVAL; } @@ -397,6 +408,7 @@ retry: goto retry; } + ww_acquire_done(&op->ticket); return 0; } diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index a424949005c9..7e3fef4e6938 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -979,6 +979,7 @@ struct radeon_cs_parser { u32 cs_flags; u32 ring; s32 priority; + struct ww_acquire_ctx ticket; }; extern int radeon_cs_finish_pages(struct radeon_cs_parser *p); diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index 4f6b22b799ba..13a130fb3517 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -106,7 +106,7 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) radeon_bo_list_add_object(&p->relocs[i].lobj, &p->validated); } - return radeon_bo_list_validate(&p->validated, p->ring); + return radeon_bo_list_validate(&p->ticket, &p->validated, p->ring); } static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority) @@ -314,15 +314,17 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data) * If error is set than unvalidate buffer, otherwise just free memory * used by parsing context. **/ -static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error) +static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error, bool backoff) { unsigned i; if (!error) { - ttm_eu_fence_buffer_objects(&parser->validated, + ttm_eu_fence_buffer_objects(&parser->ticket, + &parser->validated, parser->ib.fence); - } else { - ttm_eu_backoff_reservation(&parser->validated); + } else if (backoff) { + ttm_eu_backoff_reservation(&parser->ticket, + &parser->validated); } if (parser->relocs != NULL) { @@ -535,7 +537,7 @@ int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) r = radeon_cs_parser_init(&parser, data); if (r) { DRM_ERROR("Failed to initialize parser !\n"); - radeon_cs_parser_fini(&parser, r); + radeon_cs_parser_fini(&parser, r, false); up_read(&rdev->exclusive_lock); r = radeon_cs_handle_lockup(rdev, r); return r; @@ -544,7 +546,7 @@ int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) if (r) { if (r != -ERESTARTSYS) DRM_ERROR("Failed to parse relocation %d!\n", r); - radeon_cs_parser_fini(&parser, r); + radeon_cs_parser_fini(&parser, r, false); up_read(&rdev->exclusive_lock); r = radeon_cs_handle_lockup(rdev, r); return r; @@ -563,7 +565,7 @@ int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) goto out; } out: - radeon_cs_parser_fini(&parser, r); + radeon_cs_parser_fini(&parser, r, true); up_read(&rdev->exclusive_lock); r = radeon_cs_handle_lockup(rdev, r); return r; diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 07af5a95bb62..71287bb7b433 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -349,14 +349,15 @@ void radeon_bo_list_add_object(struct radeon_bo_list *lobj, } } -int radeon_bo_list_validate(struct list_head *head, int ring) +int radeon_bo_list_validate(struct ww_acquire_ctx *ticket, + struct list_head *head, int ring) { struct radeon_bo_list *lobj; struct radeon_bo *bo; u32 domain; int r; - r = ttm_eu_reserve_buffers(head); + r = ttm_eu_reserve_buffers(ticket, head); if (unlikely(r != 0)) { return r; } diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h index e2cb80a96b51..3e62a3a0fe54 100644 --- a/drivers/gpu/drm/radeon/radeon_object.h +++ b/drivers/gpu/drm/radeon/radeon_object.h @@ -128,7 +128,8 @@ extern int radeon_bo_init(struct radeon_device *rdev); extern void radeon_bo_fini(struct radeon_device *rdev); extern void radeon_bo_list_add_object(struct radeon_bo_list *lobj, struct list_head *head); -extern int radeon_bo_list_validate(struct list_head *head, int ring); +extern int radeon_bo_list_validate(struct ww_acquire_ctx *ticket, + struct list_head *head, int ring); extern int radeon_bo_fbdev_mmap(struct radeon_bo *bo, struct vm_area_struct *vma); extern int radeon_bo_set_tiling_flags(struct radeon_bo *bo, diff --git a/drivers/gpu/drm/radeon/radeon_uvd.c b/drivers/gpu/drm/radeon/radeon_uvd.c index ce5a10c8d338..41efcec28cd8 100644 --- a/drivers/gpu/drm/radeon/radeon_uvd.c +++ b/drivers/gpu/drm/radeon/radeon_uvd.c @@ -550,6 +550,7 @@ static int radeon_uvd_send_msg(struct radeon_device *rdev, struct radeon_fence **fence) { struct ttm_validate_buffer tv; + struct ww_acquire_ctx ticket; struct list_head head; struct radeon_ib ib; uint64_t addr; @@ -561,7 +562,7 @@ static int radeon_uvd_send_msg(struct radeon_device *rdev, INIT_LIST_HEAD(&head); list_add(&tv.head, &head); - r = ttm_eu_reserve_buffers(&head); + r = ttm_eu_reserve_buffers(&ticket, &head); if (r) return r; @@ -569,16 +570,12 @@ static int radeon_uvd_send_msg(struct radeon_device *rdev, radeon_uvd_force_into_uvd_segment(bo); r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false); - if (r) { - ttm_eu_backoff_reservation(&head); - return r; - } + if (r) + goto err; r = radeon_ib_get(rdev, ring, &ib, NULL, 16); - if (r) { - ttm_eu_backoff_reservation(&head); - return r; - } + if (r) + goto err; addr = radeon_bo_gpu_offset(bo); ib.ptr[0] = PACKET0(UVD_GPCOM_VCPU_DATA0, 0); @@ -592,11 +589,9 @@ static int radeon_uvd_send_msg(struct radeon_device *rdev, ib.length_dw = 16; r = radeon_ib_schedule(rdev, &ib, NULL); - if (r) { - ttm_eu_backoff_reservation(&head); - return r; - } - ttm_eu_fence_buffer_objects(&head, ib.fence); + if (r) + goto err; + ttm_eu_fence_buffer_objects(&ticket, &head, ib.fence); if (fence) *fence = radeon_fence_ref(ib.fence); @@ -604,6 +599,10 @@ static int radeon_uvd_send_msg(struct radeon_device *rdev, radeon_ib_free(rdev, &ib); radeon_bo_unref(&bo); return 0; + +err: + ttm_eu_backoff_reservation(&ticket, &head); + return r; } /* multiple fence commands without any stream commands in between can diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 9b07b7d44a58..b912375b9c18 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -215,7 +215,8 @@ int ttm_bo_del_from_lru(struct ttm_buffer_object *bo) int ttm_bo_reserve_nolru(struct ttm_buffer_object *bo, bool interruptible, - bool no_wait, bool use_sequence, uint32_t sequence) + bool no_wait, bool use_ticket, + struct ww_acquire_ctx *ticket) { int ret; @@ -223,17 +224,17 @@ int ttm_bo_reserve_nolru(struct ttm_buffer_object *bo, /** * Deadlock avoidance for multi-bo reserving. */ - if (use_sequence && bo->seq_valid) { + if (use_ticket && bo->seq_valid) { /** * We've already reserved this one. */ - if (unlikely(sequence == bo->val_seq)) + if (unlikely(ticket->stamp == bo->val_seq)) return -EDEADLK; /** * Already reserved by a thread that will not back * off for us. We need to back off. */ - if (unlikely(sequence - bo->val_seq < (1 << 31))) + if (unlikely(ticket->stamp - bo->val_seq <= LONG_MAX)) return -EAGAIN; } @@ -246,13 +247,14 @@ int ttm_bo_reserve_nolru(struct ttm_buffer_object *bo, return ret; } - if (use_sequence) { + if (use_ticket) { bool wake_up = false; + /** * Wake up waiters that may need to recheck for deadlock, * if we decreased the sequence number. */ - if (unlikely((bo->val_seq - sequence < (1 << 31)) + if (unlikely((bo->val_seq - ticket->stamp <= LONG_MAX) || !bo->seq_valid)) wake_up = true; @@ -266,7 +268,7 @@ int ttm_bo_reserve_nolru(struct ttm_buffer_object *bo, * written before val_seq was, and just means some slightly * increased cpu usage */ - bo->val_seq = sequence; + bo->val_seq = ticket->stamp; bo->seq_valid = true; if (wake_up) wake_up_all(&bo->event_queue); @@ -292,14 +294,15 @@ void ttm_bo_list_ref_sub(struct ttm_buffer_object *bo, int count, int ttm_bo_reserve(struct ttm_buffer_object *bo, bool interruptible, - bool no_wait, bool use_sequence, uint32_t sequence) + bool no_wait, bool use_ticket, + struct ww_acquire_ctx *ticket) { struct ttm_bo_global *glob = bo->glob; int put_count = 0; int ret; - ret = ttm_bo_reserve_nolru(bo, interruptible, no_wait, use_sequence, - sequence); + ret = ttm_bo_reserve_nolru(bo, interruptible, no_wait, use_ticket, + ticket); if (likely(ret == 0)) { spin_lock(&glob->lru_lock); put_count = ttm_bo_del_from_lru(bo); @@ -311,13 +314,14 @@ int ttm_bo_reserve(struct ttm_buffer_object *bo, } int ttm_bo_reserve_slowpath_nolru(struct ttm_buffer_object *bo, - bool interruptible, uint32_t sequence) + bool interruptible, + struct ww_acquire_ctx *ticket) { bool wake_up = false; int ret; while (unlikely(atomic_xchg(&bo->reserved, 1) != 0)) { - WARN_ON(bo->seq_valid && sequence == bo->val_seq); + WARN_ON(bo->seq_valid && ticket->stamp == bo->val_seq); ret = ttm_bo_wait_unreserved(bo, interruptible); @@ -325,14 +329,14 @@ int ttm_bo_reserve_slowpath_nolru(struct ttm_buffer_object *bo, return ret; } - if ((bo->val_seq - sequence < (1 << 31)) || !bo->seq_valid) + if (bo->val_seq - ticket->stamp < LONG_MAX || !bo->seq_valid) wake_up = true; /** * Wake up waiters that may need to recheck for deadlock, * if we decreased the sequence number. */ - bo->val_seq = sequence; + bo->val_seq = ticket->stamp; bo->seq_valid = true; if (wake_up) wake_up_all(&bo->event_queue); @@ -341,12 +345,12 @@ int ttm_bo_reserve_slowpath_nolru(struct ttm_buffer_object *bo, } int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo, - bool interruptible, uint32_t sequence) + bool interruptible, struct ww_acquire_ctx *ticket) { struct ttm_bo_global *glob = bo->glob; int put_count, ret; - ret = ttm_bo_reserve_slowpath_nolru(bo, interruptible, sequence); + ret = ttm_bo_reserve_slowpath_nolru(bo, interruptible, ticket); if (likely(!ret)) { spin_lock(&glob->lru_lock); put_count = ttm_bo_del_from_lru(bo); @@ -357,7 +361,7 @@ int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo, } EXPORT_SYMBOL(ttm_bo_reserve_slowpath); -void ttm_bo_unreserve_locked(struct ttm_buffer_object *bo) +void ttm_bo_unreserve_ticket_locked(struct ttm_buffer_object *bo, struct ww_acquire_ctx *ticket) { ttm_bo_add_to_lru(bo); atomic_set(&bo->reserved, 0); @@ -369,11 +373,21 @@ void ttm_bo_unreserve(struct ttm_buffer_object *bo) struct ttm_bo_global *glob = bo->glob; spin_lock(&glob->lru_lock); - ttm_bo_unreserve_locked(bo); + ttm_bo_unreserve_ticket_locked(bo, NULL); spin_unlock(&glob->lru_lock); } EXPORT_SYMBOL(ttm_bo_unreserve); +void ttm_bo_unreserve_ticket(struct ttm_buffer_object *bo, struct ww_acquire_ctx *ticket) +{ + struct ttm_bo_global *glob = bo->glob; + + spin_lock(&glob->lru_lock); + ttm_bo_unreserve_ticket_locked(bo, ticket); + spin_unlock(&glob->lru_lock); +} +EXPORT_SYMBOL(ttm_bo_unreserve_ticket); + /* * Call bo->mutex locked. */ diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c index 7b90def15674..efcb734e5543 100644 --- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c +++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c @@ -32,7 +32,8 @@ #include <linux/sched.h> #include <linux/module.h> -static void ttm_eu_backoff_reservation_locked(struct list_head *list) +static void ttm_eu_backoff_reservation_locked(struct list_head *list, + struct ww_acquire_ctx *ticket) { struct ttm_validate_buffer *entry; @@ -41,14 +42,15 @@ static void ttm_eu_backoff_reservation_locked(struct list_head *list) if (!entry->reserved) continue; + entry->reserved = false; if (entry->removed) { - ttm_bo_add_to_lru(bo); + ttm_bo_unreserve_ticket_locked(bo, ticket); entry->removed = false; + } else { + atomic_set(&bo->reserved, 0); + wake_up_all(&bo->event_queue); } - entry->reserved = false; - atomic_set(&bo->reserved, 0); - wake_up_all(&bo->event_queue); } } @@ -82,7 +84,8 @@ static void ttm_eu_list_ref_sub(struct list_head *list) } } -void ttm_eu_backoff_reservation(struct list_head *list) +void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket, + struct list_head *list) { struct ttm_validate_buffer *entry; struct ttm_bo_global *glob; @@ -93,7 +96,8 @@ void ttm_eu_backoff_reservation(struct list_head *list) entry = list_first_entry(list, struct ttm_validate_buffer, head); glob = entry->bo->glob; spin_lock(&glob->lru_lock); - ttm_eu_backoff_reservation_locked(list); + ttm_eu_backoff_reservation_locked(list, ticket); + ww_acquire_fini(ticket); spin_unlock(&glob->lru_lock); } EXPORT_SYMBOL(ttm_eu_backoff_reservation); @@ -110,12 +114,12 @@ EXPORT_SYMBOL(ttm_eu_backoff_reservation); * buffers in different orders. */ -int ttm_eu_reserve_buffers(struct list_head *list) +int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket, + struct list_head *list) { struct ttm_bo_global *glob; struct ttm_validate_buffer *entry; int ret; - uint32_t val_seq; if (list_empty(list)) return 0; @@ -129,8 +133,8 @@ int ttm_eu_reserve_buffers(struct list_head *list) entry = list_first_entry(list, struct ttm_validate_buffer, head); glob = entry->bo->glob; + ww_acquire_init(ticket, &reservation_ww_class); spin_lock(&glob->lru_lock); - val_seq = entry->bo->bdev->val_seq++; retry: list_for_each_entry(entry, list, head) { @@ -140,7 +144,7 @@ retry: if (entry->reserved) continue; - ret = ttm_bo_reserve_nolru(bo, true, true, true, val_seq); + ret = ttm_bo_reserve_nolru(bo, true, true, true, ticket); switch (ret) { case 0: break; @@ -148,8 +152,9 @@ retry: ttm_eu_del_from_lru_locked(list); spin_unlock(&glob->lru_lock); ret = ttm_bo_reserve_nolru(bo, true, false, - true, val_seq); + true, ticket); spin_lock(&glob->lru_lock); + if (!ret) break; @@ -158,21 +163,13 @@ retry: /* fallthrough */ case -EAGAIN: - ttm_eu_backoff_reservation_locked(list); - - /* - * temporarily increase sequence number every retry, - * to prevent us from seeing our old reservation - * sequence when someone else reserved the buffer, - * but hasn't updated the seq_valid/seqno members yet. - */ - val_seq = entry->bo->bdev->val_seq++; - + ttm_eu_backoff_reservation_locked(list, ticket); spin_unlock(&glob->lru_lock); ttm_eu_list_ref_sub(list); - ret = ttm_bo_reserve_slowpath_nolru(bo, true, val_seq); + ret = ttm_bo_reserve_slowpath_nolru(bo, true, ticket); if (unlikely(ret != 0)) - return ret; + goto err_fini; + spin_lock(&glob->lru_lock); entry->reserved = true; if (unlikely(atomic_read(&bo->cpu_writers) > 0)) { @@ -191,21 +188,25 @@ retry: } } + ww_acquire_done(ticket); ttm_eu_del_from_lru_locked(list); spin_unlock(&glob->lru_lock); ttm_eu_list_ref_sub(list); - return 0; err: - ttm_eu_backoff_reservation_locked(list); + ttm_eu_backoff_reservation_locked(list, ticket); spin_unlock(&glob->lru_lock); ttm_eu_list_ref_sub(list); +err_fini: + ww_acquire_done(ticket); + ww_acquire_fini(ticket); return ret; } EXPORT_SYMBOL(ttm_eu_reserve_buffers); -void ttm_eu_fence_buffer_objects(struct list_head *list, void *sync_obj) +void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket, + struct list_head *list, void *sync_obj) { struct ttm_validate_buffer *entry; struct ttm_buffer_object *bo; @@ -228,11 +229,12 @@ void ttm_eu_fence_buffer_objects(struct list_head *list, void *sync_obj) bo = entry->bo; entry->old_sync_obj = bo->sync_obj; bo->sync_obj = driver->sync_obj_ref(sync_obj); - ttm_bo_unreserve_locked(bo); + ttm_bo_unreserve_ticket_locked(bo, ticket); entry->reserved = false; } spin_unlock(&bdev->fence_lock); spin_unlock(&glob->lru_lock); + ww_acquire_fini(ticket); list_for_each_entry(entry, list, head) { if (entry->old_sync_obj) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c index 394e6476105b..599f6469a1eb 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c @@ -1432,6 +1432,7 @@ int vmw_execbuf_process(struct drm_file *file_priv, struct vmw_fence_obj *fence = NULL; struct vmw_resource *error_resource; struct list_head resource_list; + struct ww_acquire_ctx ticket; uint32_t handle; void *cmd; int ret; @@ -1488,7 +1489,7 @@ int vmw_execbuf_process(struct drm_file *file_priv, if (unlikely(ret != 0)) goto out_err; - ret = ttm_eu_reserve_buffers(&sw_context->validate_nodes); + ret = ttm_eu_reserve_buffers(&ticket, &sw_context->validate_nodes); if (unlikely(ret != 0)) goto out_err; @@ -1537,7 +1538,7 @@ int vmw_execbuf_process(struct drm_file *file_priv, DRM_ERROR("Fence submission error. Syncing.\n"); vmw_resource_list_unreserve(&sw_context->resource_list, false); - ttm_eu_fence_buffer_objects(&sw_context->validate_nodes, + ttm_eu_fence_buffer_objects(&ticket, &sw_context->validate_nodes, (void *) fence); if (unlikely(dev_priv->pinned_bo != NULL && @@ -1570,7 +1571,7 @@ int vmw_execbuf_process(struct drm_file *file_priv, out_err: vmw_resource_relocations_free(&sw_context->res_relocations); vmw_free_relocations(sw_context); - ttm_eu_backoff_reservation(&sw_context->validate_nodes); + ttm_eu_backoff_reservation(&ticket, &sw_context->validate_nodes); vmw_resource_list_unreserve(&sw_context->resource_list, true); vmw_clear_validations(sw_context); if (unlikely(dev_priv->pinned_bo != NULL && @@ -1644,6 +1645,7 @@ void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv, struct list_head validate_list; struct ttm_validate_buffer pinned_val, query_val; struct vmw_fence_obj *lfence = NULL; + struct ww_acquire_ctx ticket; if (dev_priv->pinned_bo == NULL) goto out_unlock; @@ -1657,7 +1659,7 @@ void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv, list_add_tail(&query_val.head, &validate_list); do { - ret = ttm_eu_reserve_buffers(&validate_list); + ret = ttm_eu_reserve_buffers(&ticket, &validate_list); } while (ret == -ERESTARTSYS); if (unlikely(ret != 0)) { @@ -1684,7 +1686,7 @@ void __vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv, NULL); fence = lfence; } - ttm_eu_fence_buffer_objects(&validate_list, (void *) fence); + ttm_eu_fence_buffer_objects(&ticket, &validate_list, (void *) fence); if (lfence != NULL) vmw_fence_obj_unreference(&lfence); @@ -1696,7 +1698,7 @@ out_unlock: return; out_no_emit: - ttm_eu_backoff_reservation(&validate_list); + ttm_eu_backoff_reservation(&ticket, &validate_list); out_no_reserve: ttm_bo_unref(&query_val.bo); ttm_bo_unref(&pinned_val.bo); diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c index bc784254e78e..ced79465a095 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c @@ -990,9 +990,11 @@ void vmw_resource_unreserve(struct vmw_resource *res, * @val_buf: On successful return contains data about the * reserved and validated backup buffer. */ -int vmw_resource_check_buffer(struct vmw_resource *res, - bool interruptible, - struct ttm_validate_buffer *val_buf) +static int +vmw_resource_check_buffer(struct vmw_resource *res, + struct ww_acquire_ctx *ticket, + bool interruptible, + struct ttm_validate_buffer *val_buf) { struct list_head val_list; bool backup_dirty = false; @@ -1007,7 +1009,7 @@ int vmw_resource_check_buffer(struct vmw_resource *res, INIT_LIST_HEAD(&val_list); val_buf->bo = ttm_bo_reference(&res->backup->base); list_add_tail(&val_buf->head, &val_list); - ret = ttm_eu_reserve_buffers(&val_list); + ret = ttm_eu_reserve_buffers(ticket, &val_list); if (unlikely(ret != 0)) goto out_no_reserve; @@ -1025,7 +1027,7 @@ int vmw_resource_check_buffer(struct vmw_resource *res, return 0; out_no_validate: - ttm_eu_backoff_reservation(&val_list); + ttm_eu_backoff_reservation(ticket, &val_list); out_no_reserve: ttm_bo_unref(&val_buf->bo); if (backup_dirty) @@ -1069,7 +1071,9 @@ int vmw_resource_reserve(struct vmw_resource *res, bool no_backup) *. * @val_buf: Backup buffer information. */ -void vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf) +static void +vmw_resource_backoff_reservation(struct ww_acquire_ctx *ticket, + struct ttm_validate_buffer *val_buf) { struct list_head val_list; @@ -1078,7 +1082,7 @@ void vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf) INIT_LIST_HEAD(&val_list); list_add_tail(&val_buf->head, &val_list); - ttm_eu_backoff_reservation(&val_list); + ttm_eu_backoff_reservation(ticket, &val_list); ttm_bo_unref(&val_buf->bo); } @@ -1092,12 +1096,13 @@ int vmw_resource_do_evict(struct vmw_resource *res) { struct ttm_validate_buffer val_buf; const struct vmw_res_func *func = res->func; + struct ww_acquire_ctx ticket; int ret; BUG_ON(!func->may_evict); val_buf.bo = NULL; - ret = vmw_resource_check_buffer(res, true, &val_buf); + ret = vmw_resource_check_buffer(res, &ticket, true, &val_buf); if (unlikely(ret != 0)) return ret; @@ -1112,7 +1117,7 @@ int vmw_resource_do_evict(struct vmw_resource *res) res->backup_dirty = true; res->res_dirty = false; out_no_unbind: - vmw_resource_backoff_reservation(&val_buf); + vmw_resource_backoff_reservation(&ticket, &val_buf); return ret; } diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 3cb5d848fb66..0a992b016fe9 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -234,7 +234,7 @@ struct ttm_buffer_object { struct list_head ddestroy; struct list_head swap; struct list_head io_reserve_lru; - uint32_t val_seq; + unsigned long val_seq; bool seq_valid; /** diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 9c8dca79808e..ec18c5f3e6e9 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -38,6 +38,7 @@ #include <linux/workqueue.h> #include <linux/fs.h> #include <linux/spinlock.h> +#include <linux/reservation.h> struct ttm_backend_func { /** @@ -778,7 +779,7 @@ extern void ttm_mem_io_unlock(struct ttm_mem_type_manager *man); * @bo: A pointer to a struct ttm_buffer_object. * @interruptible: Sleep interruptible if waiting. * @no_wait: Don't sleep while trying to reserve, rather return -EBUSY. - * @use_sequence: If @bo is already reserved, Only sleep waiting for + * @use_ticket: If @bo is already reserved, Only sleep waiting for * it to become unreserved if @sequence < (@bo)->sequence. * * Locks a buffer object for validation. (Or prevents other processes from @@ -819,7 +820,8 @@ extern void ttm_mem_io_unlock(struct ttm_mem_type_manager *man); */ extern int ttm_bo_reserve(struct ttm_buffer_object *bo, bool interruptible, - bool no_wait, bool use_sequence, uint32_t sequence); + bool no_wait, bool use_ticket, + struct ww_acquire_ctx *ticket); /** * ttm_bo_reserve_slowpath_nolru: @@ -836,7 +838,7 @@ extern int ttm_bo_reserve(struct ttm_buffer_object *bo, */ extern int ttm_bo_reserve_slowpath_nolru(struct ttm_buffer_object *bo, bool interruptible, - uint32_t sequence); + struct ww_acquire_ctx *ticket); /** @@ -850,7 +852,8 @@ extern int ttm_bo_reserve_slowpath_nolru(struct ttm_buffer_object *bo, * held by us, this function cannot deadlock any more. */ extern int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo, - bool interruptible, uint32_t sequence); + bool interruptible, + struct ww_acquire_ctx *ticket); /** * ttm_bo_reserve_nolru: @@ -876,8 +879,8 @@ extern int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo, */ extern int ttm_bo_reserve_nolru(struct ttm_buffer_object *bo, bool interruptible, - bool no_wait, bool use_sequence, - uint32_t sequence); + bool no_wait, bool use_ticket, + struct ww_acquire_ctx *ticket); /** * ttm_bo_unreserve @@ -889,14 +892,25 @@ extern int ttm_bo_reserve_nolru(struct ttm_buffer_object *bo, extern void ttm_bo_unreserve(struct ttm_buffer_object *bo); /** - * ttm_bo_unreserve_locked + * ttm_bo_unreserve_ticket + * @bo: A pointer to a struct ttm_buffer_object. + * @ticket: ww_acquire_ctx used for reserving * + * Unreserve a previous reservation of @bo made with @ticket. + */ +extern void ttm_bo_unreserve_ticket(struct ttm_buffer_object *bo, + struct ww_acquire_ctx *ticket); + +/** + * ttm_bo_unreserve_locked * @bo: A pointer to a struct ttm_buffer_object. + * @ticket: ww_acquire_ctx used for reserving, or NULL * - * Unreserve a previous reservation of @bo. + * Unreserve a previous reservation of @bo made with @ticket. * Needs to be called with struct ttm_bo_global::lru_lock held. */ -extern void ttm_bo_unreserve_locked(struct ttm_buffer_object *bo); +extern void ttm_bo_unreserve_ticket_locked(struct ttm_buffer_object *bo, + struct ww_acquire_ctx *ticket); /* * ttm_bo_util.c diff --git a/include/drm/ttm/ttm_execbuf_util.h b/include/drm/ttm/ttm_execbuf_util.h index 547e19f06e57..ba71ef91f4d5 100644 --- a/include/drm/ttm/ttm_execbuf_util.h +++ b/include/drm/ttm/ttm_execbuf_util.h @@ -33,6 +33,7 @@ #include <ttm/ttm_bo_api.h> #include <linux/list.h> +#include <linux/reservation.h> /** * struct ttm_validate_buffer @@ -57,17 +58,20 @@ struct ttm_validate_buffer { /** * function ttm_eu_backoff_reservation * + * @ticket: ww_acquire_ctx from reserve call * @list: thread private list of ttm_validate_buffer structs. * * Undoes all buffer validation reservations for bos pointed to by * the list entries. */ -extern void ttm_eu_backoff_reservation(struct list_head *list); +extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket, + struct list_head *list); /** * function ttm_eu_reserve_buffers * + * @ticket: [out] ww_acquire_ctx returned by call. * @list: thread private list of ttm_validate_buffer structs. * * Tries to reserve bos pointed to by the list entries for validation. @@ -90,11 +94,13 @@ extern void ttm_eu_backoff_reservation(struct list_head *list); * has failed. */ -extern int ttm_eu_reserve_buffers(struct list_head *list); +extern int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket, + struct list_head *list); /** * function ttm_eu_fence_buffer_objects. * + * @ticket: ww_acquire_ctx from reserve call * @list: thread private list of ttm_validate_buffer structs. * @sync_obj: The new sync object for the buffers. * @@ -104,6 +110,7 @@ extern int ttm_eu_reserve_buffers(struct list_head *list); * */ -extern void ttm_eu_fence_buffer_objects(struct list_head *list, void *sync_obj); +extern void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket, + struct list_head *list, void *sync_obj); #endif |