diff options
40 files changed, 824 insertions, 706 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index c3ac5a5c5185..8f7365b8dffb 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -2079,7 +2079,6 @@ intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb, unsigned int pinctl; u32 alignment; - WARN_ON(!mutex_is_locked(&dev->struct_mutex)); if (WARN_ON(!i915_gem_object_is_framebuffer(obj))) return ERR_PTR(-EINVAL); @@ -2163,8 +2162,6 @@ err: void intel_unpin_fb_vma(struct i915_vma *vma, unsigned long flags) { - lockdep_assert_held(&vma->vm->i915->drm.struct_mutex); - i915_gem_object_lock(vma->obj); if (flags & PLANE_HAS_FENCE) i915_vma_unpin_fence(vma); @@ -3065,12 +3062,10 @@ intel_alloc_initial_plane_obj(struct intel_crtc *crtc, return false; } - mutex_lock(&dev->struct_mutex); obj = i915_gem_object_create_stolen_for_preallocated(dev_priv, base_aligned, base_aligned, size_aligned); - mutex_unlock(&dev->struct_mutex); if (!obj) return false; @@ -3232,13 +3227,11 @@ valid_fb: intel_state->color_plane[0].stride = intel_fb_pitch(fb, 0, intel_state->base.rotation); - mutex_lock(&dev->struct_mutex); intel_state->vma = intel_pin_and_fence_fb_obj(fb, &intel_state->view, intel_plane_uses_fence(intel_state), &intel_state->flags); - mutex_unlock(&dev->struct_mutex); if (IS_ERR(intel_state->vma)) { DRM_ERROR("failed to pin boot fb on pipe %d: %li\n", intel_crtc->pipe, PTR_ERR(intel_state->vma)); @@ -14365,8 +14358,6 @@ static void fb_obj_bump_render_priority(struct drm_i915_gem_object *obj) * bits. Some older platforms need special physical address handling for * cursor planes. * - * Must be called with struct_mutex held. - * * Returns 0 on success, negative error code on failure. */ int @@ -14423,15 +14414,8 @@ intel_prepare_plane_fb(struct drm_plane *plane, if (ret) return ret; - ret = mutex_lock_interruptible(&dev_priv->drm.struct_mutex); - if (ret) { - i915_gem_object_unpin_pages(obj); - return ret; - } - ret = intel_plane_pin_fb(to_intel_plane_state(new_state)); - mutex_unlock(&dev_priv->drm.struct_mutex); i915_gem_object_unpin_pages(obj); if (ret) return ret; @@ -14480,8 +14464,6 @@ intel_prepare_plane_fb(struct drm_plane *plane, * @old_state: the state from the previous modeset * * Cleans up a framebuffer that has just been removed from a plane. - * - * Must be called with struct_mutex held. */ void intel_cleanup_plane_fb(struct drm_plane *plane, @@ -14497,9 +14479,7 @@ intel_cleanup_plane_fb(struct drm_plane *plane, } /* Should only be called after a successful intel_prepare_plane_fb()! */ - mutex_lock(&dev_priv->drm.struct_mutex); intel_plane_unpin_fb(to_intel_plane_state(old_state)); - mutex_unlock(&dev_priv->drm.struct_mutex); } int @@ -14702,7 +14682,6 @@ intel_legacy_cursor_update(struct drm_plane *plane, u32 src_w, u32 src_h, struct drm_modeset_acquire_ctx *ctx) { - struct drm_i915_private *dev_priv = to_i915(crtc->dev); struct drm_plane_state *old_plane_state, *new_plane_state; struct intel_plane *intel_plane = to_intel_plane(plane); struct intel_crtc_state *crtc_state = @@ -14768,13 +14747,9 @@ intel_legacy_cursor_update(struct drm_plane *plane, if (ret) goto out_free; - ret = mutex_lock_interruptible(&dev_priv->drm.struct_mutex); - if (ret) - goto out_free; - ret = intel_plane_pin_fb(to_intel_plane_state(new_plane_state)); if (ret) - goto out_unlock; + goto out_free; intel_frontbuffer_flush(to_intel_frontbuffer(fb), ORIGIN_FLIP); intel_frontbuffer_track(to_intel_frontbuffer(old_plane_state->fb), @@ -14804,8 +14779,6 @@ intel_legacy_cursor_update(struct drm_plane *plane, intel_plane_unpin_fb(to_intel_plane_state(old_plane_state)); -out_unlock: - mutex_unlock(&dev_priv->drm.struct_mutex); out_free: if (new_crtc_state) intel_crtc_destroy_state(crtc, &new_crtc_state->base); diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c index 0a0a1536ac96..bb5a0e91b370 100644 --- a/drivers/gpu/drm/i915/display/intel_dsb.c +++ b/drivers/gpu/drm/i915/display/intel_dsb.c @@ -119,9 +119,7 @@ intel_dsb_get(struct intel_crtc *crtc) goto err; } - mutex_lock(&i915->drm.struct_mutex); vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE); - mutex_unlock(&i915->drm.struct_mutex); if (IS_ERR(vma)) { DRM_ERROR("Vma creation failed\n"); i915_gem_object_put(obj); @@ -164,10 +162,7 @@ void intel_dsb_put(struct intel_dsb *dsb) return; if (atomic_dec_and_test(&dsb->refcount)) { - mutex_lock(&i915->drm.struct_mutex); - i915_gem_object_unpin_map(dsb->vma->obj); - i915_vma_unpin_and_release(&dsb->vma, 0); - mutex_unlock(&i915->drm.struct_mutex); + i915_vma_unpin_and_release(&dsb->vma, I915_VMA_RELEASE_MAP); dsb->cmd_buf = NULL; dsb->free_pos = 0; dsb->ins_start_offset = 0; diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index 68338669f054..97cde017670a 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -204,7 +204,6 @@ static int intelfb_create(struct drm_fb_helper *helper, sizes->fb_height = intel_fb->base.height; } - mutex_lock(&dev->struct_mutex); wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm); /* Pin the GGTT vma for our access via info->screen_base. @@ -266,7 +265,6 @@ static int intelfb_create(struct drm_fb_helper *helper, ifbdev->vma_flags = flags; intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); - mutex_unlock(&dev->struct_mutex); vga_switcheroo_client_fb_set(pdev, info); return 0; @@ -274,7 +272,6 @@ out_unpin: intel_unpin_fb_vma(vma, flags); out_unlock: intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); - mutex_unlock(&dev->struct_mutex); return ret; } @@ -291,11 +288,8 @@ static void intel_fbdev_destroy(struct intel_fbdev *ifbdev) drm_fb_helper_fini(&ifbdev->helper); - if (ifbdev->vma) { - mutex_lock(&ifbdev->helper.dev->struct_mutex); + if (ifbdev->vma) intel_unpin_fb_vma(ifbdev->vma, ifbdev->vma_flags); - mutex_unlock(&ifbdev->helper.dev->struct_mutex); - } if (ifbdev->fb) drm_framebuffer_remove(&ifbdev->fb->base); diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c index 5efef9babadb..3f4ac1ee7668 100644 --- a/drivers/gpu/drm/i915/display/intel_overlay.c +++ b/drivers/gpu/drm/i915/display/intel_overlay.c @@ -1303,15 +1303,11 @@ static int get_registers(struct intel_overlay *overlay, bool use_phys) struct i915_vma *vma; int err; - mutex_lock(&i915->drm.struct_mutex); - obj = i915_gem_object_create_stolen(i915, PAGE_SIZE); if (obj == NULL) obj = i915_gem_object_create_internal(i915, PAGE_SIZE); - if (IS_ERR(obj)) { - err = PTR_ERR(obj); - goto err_unlock; - } + if (IS_ERR(obj)) + return PTR_ERR(obj); vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE); if (IS_ERR(vma)) { @@ -1332,13 +1328,10 @@ static int get_registers(struct intel_overlay *overlay, bool use_phys) } overlay->reg_bo = obj; - mutex_unlock(&i915->drm.struct_mutex); return 0; err_put_bo: i915_gem_object_put(obj); -err_unlock: - mutex_unlock(&i915->drm.struct_mutex); return err; } diff --git a/drivers/gpu/drm/i915/gem/i915_gem_client_blt.c b/drivers/gpu/drm/i915/gem/i915_gem_client_blt.c index 7f61a8024133..c1fca5728e6e 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_client_blt.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_client_blt.c @@ -211,7 +211,7 @@ static void clear_pages_worker(struct work_struct *work) * keep track of the GPU activity within this vma/request, and * propagate the signal from the request to w->dma. */ - err = i915_active_add_request(&vma->active, rq); + err = __i915_vma_move_to_active(vma, rq); if (err) goto out_request; diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index f7ba0935ed67..95f8e66e45db 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -313,8 +313,6 @@ static void i915_gem_context_free(struct i915_gem_context *ctx) GEM_BUG_ON(!i915_gem_context_is_closed(ctx)); release_hw_id(ctx); - if (ctx->vm) - i915_vm_put(ctx->vm); free_engines(rcu_access_pointer(ctx->engines)); mutex_destroy(&ctx->engines_mutex); @@ -379,9 +377,13 @@ void i915_gem_context_release(struct kref *ref) static void context_close(struct i915_gem_context *ctx) { + i915_gem_context_set_closed(ctx); + + if (ctx->vm) + i915_vm_close(ctx->vm); + mutex_lock(&ctx->mutex); - i915_gem_context_set_closed(ctx); ctx->file_priv = ERR_PTR(-EBADF); /* @@ -474,7 +476,7 @@ __set_ppgtt(struct i915_gem_context *ctx, struct i915_address_space *vm) GEM_BUG_ON(old && i915_vm_is_4lvl(vm) != i915_vm_is_4lvl(old)); - ctx->vm = i915_vm_get(vm); + ctx->vm = i915_vm_open(vm); context_apply_all(ctx, __apply_ppgtt, vm); return old; @@ -488,7 +490,7 @@ static void __assign_ppgtt(struct i915_gem_context *ctx, vm = __set_ppgtt(ctx, vm); if (vm) - i915_vm_put(vm); + i915_vm_close(vm); } static void __set_timeline(struct intel_timeline **dst, @@ -953,7 +955,7 @@ static int get_ppgtt(struct drm_i915_file_private *file_priv, if (ret < 0) goto err_unlock; - i915_vm_get(vm); + i915_vm_open(vm); args->size = 0; args->value = ret; @@ -973,7 +975,7 @@ static void set_ppgtt_barrier(void *data) if (INTEL_GEN(old->i915) < 8) gen6_ppgtt_unpin_all(i915_vm_to_ppgtt(old)); - i915_vm_put(old); + i915_vm_close(old); } static int emit_ppgtt_update(struct i915_request *rq, void *data) @@ -1090,8 +1092,8 @@ static int set_ppgtt(struct drm_i915_file_private *file_priv, set_ppgtt_barrier, old); if (err) { - i915_vm_put(__set_ppgtt(ctx, old)); - i915_vm_put(old); + i915_vm_close(__set_ppgtt(ctx, old)); + i915_vm_close(old); } unlock: diff --git a/drivers/gpu/drm/i915/gem/i915_gem_domain.c b/drivers/gpu/drm/i915/gem/i915_gem_domain.c index 55c3ab59e3aa..9937b4c341f1 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_domain.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_domain.c @@ -288,7 +288,12 @@ restart: if (!drm_mm_node_allocated(&vma->node)) continue; - ret = i915_vma_bind(vma, cache_level, PIN_UPDATE); + /* Wait for an earlier async bind, need to rewrite it */ + ret = i915_vma_sync(vma); + if (ret) + return ret; + + ret = i915_vma_bind(vma, cache_level, PIN_UPDATE, NULL); if (ret) return ret; } @@ -391,16 +396,11 @@ int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data, if (ret) goto out; - ret = mutex_lock_interruptible(&i915->drm.struct_mutex); - if (ret) - goto out; - ret = i915_gem_object_lock_interruptible(obj); if (ret == 0) { ret = i915_gem_object_set_cache_level(obj, level); i915_gem_object_unlock(obj); } - mutex_unlock(&i915->drm.struct_mutex); out: i915_gem_object_put(obj); @@ -485,6 +485,7 @@ static void i915_gem_object_bump_inactive_ggtt(struct drm_i915_gem_object *obj) if (!drm_mm_node_allocated(&vma->node)) continue; + GEM_BUG_ON(vma->vm != &i915->ggtt.vm); list_move_tail(&vma->vm_link, &vma->vm->bound_list); } mutex_unlock(&i915->ggtt.vm.mutex); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index 228ce24ea280..42c15e8bf166 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -698,7 +698,9 @@ static int eb_reserve(struct i915_execbuffer *eb) case 1: /* Too fragmented, unbind everything and retry */ + mutex_lock(&eb->context->vm->mutex); err = i915_gem_evict_vm(eb->context->vm); + mutex_unlock(&eb->context->vm->mutex); if (err) return err; break; @@ -972,7 +974,9 @@ static void reloc_cache_reset(struct reloc_cache *cache) ggtt->vm.clear_range(&ggtt->vm, cache->node.start, cache->node.size); + mutex_lock(&ggtt->vm.mutex); drm_mm_remove_node(&cache->node); + mutex_unlock(&ggtt->vm.mutex); } else { i915_vma_unpin((struct i915_vma *)cache->node.mm); } @@ -1047,11 +1051,13 @@ static void *reloc_iomap(struct drm_i915_gem_object *obj, PIN_NOEVICT); if (IS_ERR(vma)) { memset(&cache->node, 0, sizeof(cache->node)); + mutex_lock(&ggtt->vm.mutex); err = drm_mm_insert_node_in_range (&ggtt->vm.mm, &cache->node, PAGE_SIZE, 0, I915_COLOR_UNEVICTABLE, 0, ggtt->mappable_end, DRM_MM_INSERT_LOW); + mutex_unlock(&ggtt->vm.mutex); if (err) /* no inactive aperture space, use cpu reloc */ return NULL; } else { @@ -1416,7 +1422,7 @@ eb_relocate_entry(struct i915_execbuffer *eb, if (reloc->write_domain == I915_GEM_DOMAIN_INSTRUCTION && IS_GEN(eb->i915, 6)) { err = i915_vma_bind(target, target->obj->cache_level, - PIN_GLOBAL); + PIN_GLOBAL, NULL); if (WARN_ONCE(err, "Unexpected failure to bind target VMA!")) return err; @@ -2142,35 +2148,6 @@ static struct i915_request *eb_throttle(struct intel_context *ce) return i915_request_get(rq); } -static int -__eb_pin_context(struct i915_execbuffer *eb, struct intel_context *ce) -{ - int err; - - if (likely(atomic_inc_not_zero(&ce->pin_count))) - return 0; - - err = mutex_lock_interruptible(&eb->i915->drm.struct_mutex); - if (err) - return err; - - err = __intel_context_do_pin(ce); - mutex_unlock(&eb->i915->drm.struct_mutex); - - return err; -} - -static void -__eb_unpin_context(struct i915_execbuffer *eb, struct intel_context *ce) -{ - if (likely(atomic_add_unless(&ce->pin_count, -1, 1))) - return; - - mutex_lock(&eb->i915->drm.struct_mutex); - intel_context_unpin(ce); - mutex_unlock(&eb->i915->drm.struct_mutex); -} - static int __eb_pin_engine(struct i915_execbuffer *eb, struct intel_context *ce) { struct intel_timeline *tl; @@ -2190,7 +2167,7 @@ static int __eb_pin_engine(struct i915_execbuffer *eb, struct intel_context *ce) * GGTT space, so do this first before we reserve a seqno for * ourselves. */ - err = __eb_pin_context(eb, ce); + err = intel_context_pin(ce); if (err) return err; @@ -2234,7 +2211,7 @@ err_exit: intel_context_exit(ce); intel_context_timeline_unlock(tl); err_unpin: - __eb_unpin_context(eb, ce); + intel_context_unpin(ce); return err; } @@ -2247,7 +2224,7 @@ static void eb_unpin_engine(struct i915_execbuffer *eb) intel_context_exit(ce); mutex_unlock(&tl->mutex); - __eb_unpin_context(eb, ce); + intel_context_unpin(ce); } static unsigned int diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c index dd0c2840ba4d..c19431d609fc 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c @@ -249,16 +249,6 @@ vm_fault_t i915_gem_fault(struct vm_fault *vmf) if (ret) goto err_rpm; - ret = i915_mutex_lock_interruptible(dev); - if (ret) - goto err_reset; - - /* Access to snoopable pages through the GTT is incoherent. */ - if (obj->cache_level != I915_CACHE_NONE && !HAS_LLC(i915)) { - ret = -EFAULT; - goto err_unlock; - } - /* Now pin it into the GTT as needed */ vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE | @@ -291,7 +281,13 @@ vm_fault_t i915_gem_fault(struct vm_fault *vmf) } if (IS_ERR(vma)) { ret = PTR_ERR(vma); - goto err_unlock; + goto err_reset; + } + + /* Access to snoopable pages through the GTT is incoherent. */ + if (obj->cache_level != I915_CACHE_NONE && !HAS_LLC(i915)) { + ret = -EFAULT; + goto err_unpin; } ret = i915_vma_pin_fence(vma); @@ -329,8 +325,6 @@ err_fence: i915_vma_unpin_fence(vma); err_unpin: __i915_vma_unpin(vma); -err_unlock: - mutex_unlock(&dev->struct_mutex); err_reset: intel_gt_reset_unlock(ggtt->vm.gt, srcu); err_rpm: diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c index 0ef60dae23a7..dbf9be9a79f4 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c @@ -155,21 +155,30 @@ static void __i915_gem_free_objects(struct drm_i915_private *i915, wakeref = intel_runtime_pm_get(&i915->runtime_pm); llist_for_each_entry_safe(obj, on, freed, freed) { - struct i915_vma *vma, *vn; - trace_i915_gem_object_destroy(obj); - mutex_lock(&i915->drm.struct_mutex); - - list_for_each_entry_safe(vma, vn, &obj->vma.list, obj_link) { - GEM_BUG_ON(i915_vma_is_active(vma)); - atomic_and(~I915_VMA_PIN_MASK, &vma->flags); - i915_vma_destroy(vma); + if (!list_empty(&obj->vma.list)) { + struct i915_vma *vma; + + /* + * Note that the vma keeps an object reference while + * it is active, so it *should* not sleep while we + * destroy it. Our debug code errs insits it *might*. + * For the moment, play along. + */ + spin_lock(&obj->vma.lock); + while ((vma = list_first_entry_or_null(&obj->vma.list, + struct i915_vma, + obj_link))) { + GEM_BUG_ON(vma->obj != obj); + spin_unlock(&obj->vma.lock); + + i915_vma_destroy(vma); + + spin_lock(&obj->vma.lock); + } + spin_unlock(&obj->vma.lock); } - GEM_BUG_ON(!list_empty(&obj->vma.list)); - GEM_BUG_ON(!RB_EMPTY_ROOT(&obj->vma.tree)); - - mutex_unlock(&i915->drm.struct_mutex); GEM_BUG_ON(atomic_read(&obj->bind_count)); GEM_BUG_ON(obj->userfault_count); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h index 53c7069ba3e8..086a9bf5adcc 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h @@ -106,6 +106,11 @@ static inline void i915_gem_object_lock(struct drm_i915_gem_object *obj) dma_resv_lock(obj->base.resv, NULL); } +static inline bool i915_gem_object_trylock(struct drm_i915_gem_object *obj) +{ + return dma_resv_trylock(obj->base.resv); +} + static inline int i915_gem_object_lock_interruptible(struct drm_i915_gem_object *obj) { diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c index d2c05d752909..fd3ce6da8497 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c @@ -16,40 +16,6 @@ #include "i915_trace.h" -static bool shrinker_lock(struct drm_i915_private *i915, - unsigned int flags, - bool *unlock) -{ - struct mutex *m = &i915->drm.struct_mutex; - - switch (mutex_trylock_recursive(m)) { - case MUTEX_TRYLOCK_RECURSIVE: - *unlock = false; - return true; - - case MUTEX_TRYLOCK_FAILED: - *unlock = false; - if (flags & I915_SHRINK_ACTIVE && - mutex_lock_killable_nested(m, I915_MM_SHRINKER) == 0) - *unlock = true; - return *unlock; - - case MUTEX_TRYLOCK_SUCCESS: - *unlock = true; - return true; - } - - BUG(); -} - -static void shrinker_unlock(struct drm_i915_private *i915, bool unlock) -{ - if (!unlock) - return; - - mutex_unlock(&i915->drm.struct_mutex); -} - static bool swap_available(void) { return get_nr_swap_pages() > 0; @@ -155,10 +121,6 @@ i915_gem_shrink(struct drm_i915_private *i915, intel_wakeref_t wakeref = 0; unsigned long count = 0; unsigned long scanned = 0; - bool unlock; - - if (!shrinker_lock(i915, shrink, &unlock)) - return 0; /* * When shrinking the active list, we should also consider active @@ -268,8 +230,6 @@ i915_gem_shrink(struct drm_i915_private *i915, if (shrink & I915_SHRINK_BOUND) intel_runtime_pm_put(&i915->runtime_pm, wakeref); - shrinker_unlock(i915, unlock); - if (nr_scanned) *nr_scanned += scanned; return count; @@ -339,19 +299,14 @@ i915_gem_shrinker_scan(struct shrinker *shrinker, struct shrink_control *sc) struct drm_i915_private *i915 = container_of(shrinker, struct drm_i915_private, mm.shrinker); unsigned long freed; - bool unlock; sc->nr_scanned = 0; - if (!shrinker_lock(i915, 0, &unlock)) - return SHRINK_STOP; - freed = i915_gem_shrink(i915, sc->nr_to_scan, &sc->nr_scanned, I915_SHRINK_BOUND | - I915_SHRINK_UNBOUND | - I915_SHRINK_WRITEBACK); + I915_SHRINK_UNBOUND); if (sc->nr_scanned < sc->nr_to_scan && current_is_kswapd()) { intel_wakeref_t wakeref; @@ -366,8 +321,6 @@ i915_gem_shrinker_scan(struct shrinker *shrinker, struct shrink_control *sc) } } - shrinker_unlock(i915, unlock); - return sc->nr_scanned ? freed : SHRINK_STOP; } @@ -384,6 +337,7 @@ i915_gem_shrinker_oom(struct notifier_block *nb, unsigned long event, void *ptr) freed_pages = 0; with_intel_runtime_pm(&i915->runtime_pm, wakeref) freed_pages += i915_gem_shrink(i915, -1UL, NULL, + I915_SHRINK_ACTIVE | I915_SHRINK_BOUND | I915_SHRINK_UNBOUND | I915_SHRINK_WRITEBACK); @@ -419,10 +373,6 @@ i915_gem_shrinker_vmap(struct notifier_block *nb, unsigned long event, void *ptr struct i915_vma *vma, *next; unsigned long freed_pages = 0; intel_wakeref_t wakeref; - bool unlock; - - if (!shrinker_lock(i915, 0, &unlock)) - return NOTIFY_DONE; with_intel_runtime_pm(&i915->runtime_pm, wakeref) freed_pages += i915_gem_shrink(i915, -1UL, NULL, @@ -439,15 +389,11 @@ i915_gem_shrinker_vmap(struct notifier_block *nb, unsigned long event, void *ptr if (!vma->iomap || i915_vma_is_active(vma)) continue; - mutex_unlock(&i915->ggtt.vm.mutex); - if (i915_vma_unbind(vma) == 0) + if (__i915_vma_unbind(vma) == 0) freed_pages += count; - mutex_lock(&i915->ggtt.vm.mutex); } mutex_unlock(&i915->ggtt.vm.mutex); - shrinker_unlock(i915, unlock); - *(unsigned long *)ptr += freed_pages; return NOTIFY_DONE; } @@ -490,22 +436,9 @@ void i915_gem_shrinker_taints_mutex(struct drm_i915_private *i915, fs_reclaim_acquire(GFP_KERNEL); - /* - * As we invariably rely on the struct_mutex within the shrinker, - * but have a complicated recursion dance, taint all the mutexes used - * within the shrinker with the struct_mutex. For completeness, we - * taint with all subclass of struct_mutex, even though we should - * only need tainting by I915_MM_NORMAL to catch possible ABBA - * deadlocks from using struct_mutex inside @mutex. - */ - mutex_acquire(&i915->drm.struct_mutex.dep_map, - I915_MM_SHRINKER, 0, _RET_IP_); - mutex_acquire(&mutex->dep_map, 0, 0, _RET_IP_); mutex_release(&mutex->dep_map, 0, _RET_IP_); - mutex_release(&i915->drm.struct_mutex.dep_map, 0, _RET_IP_); - fs_reclaim_release(GFP_KERNEL); if (unlock) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c index e45eb8721850..fad98a921cde 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c @@ -624,8 +624,6 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv if (!drm_mm_initialized(&dev_priv->mm.stolen)) return NULL; - lockdep_assert_held(&dev_priv->drm.struct_mutex); - DRM_DEBUG_DRIVER("creating preallocated stolen object: stolen_offset=%pa, gtt_offset=%pa, size=%pa\n", &stolen_offset, >t_offset, &size); @@ -677,21 +675,25 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv * setting up the GTT space. The actual reservation will occur * later. */ + mutex_lock(&ggtt->vm.mutex); ret = i915_gem_gtt_reserve(&ggtt->vm, &vma->node, size, gtt_offset, obj->cache_level, 0); if (ret) { DRM_DEBUG_DRIVER("failed to allocate stolen GTT space\n"); + mutex_unlock(&ggtt->vm.mutex); goto err_pages; } GEM_BUG_ON(!drm_mm_node_allocated(&vma->node)); + GEM_BUG_ON(vma->pages); vma->pages = obj->mm.pages; + atomic_set(&vma->pages_count, I915_VMA_PAGES_ACTIVE); + set_bit(I915_VMA_GLOBAL_BIND_BIT, __i915_vma_flags(vma)); __i915_vma_set_map_and_fenceable(vma); - mutex_lock(&ggtt->vm.mutex); list_add_tail(&vma->vm_link, &ggtt->vm.bound_list); mutex_unlock(&ggtt->vm.mutex); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_tiling.c b/drivers/gpu/drm/i915/gem/i915_gem_tiling.c index e5d1ae8d4dba..dc2a83ce44d5 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_tiling.c @@ -181,22 +181,25 @@ static int i915_gem_object_fence_prepare(struct drm_i915_gem_object *obj, int tiling_mode, unsigned int stride) { + struct i915_ggtt *ggtt = &to_i915(obj->base.dev)->ggtt; struct i915_vma *vma; - int ret; + int ret = 0; if (tiling_mode == I915_TILING_NONE) return 0; + mutex_lock(&ggtt->vm.mutex); for_each_ggtt_vma(vma, obj) { if (i915_vma_fence_prepare(vma, tiling_mode, stride)) continue; - ret = i915_vma_unbind(vma); + ret = __i915_vma_unbind(vma); if (ret) - return ret; + break; } + mutex_unlock(&ggtt->vm.mutex); - return 0; + return ret; } int @@ -212,7 +215,6 @@ i915_gem_object_set_tiling(struct drm_i915_gem_object *obj, GEM_BUG_ON(!i915_tiling_ok(obj, tiling, stride)); GEM_BUG_ON(!stride ^ (tiling == I915_TILING_NONE)); - lockdep_assert_held(&i915->drm.struct_mutex); if ((tiling | stride) == obj->tiling_and_stride) return 0; @@ -233,16 +235,18 @@ i915_gem_object_set_tiling(struct drm_i915_gem_object *obj, * whilst executing a fenced command for an untiled object. */ - err = i915_gem_object_fence_prepare(obj, tiling, stride); - if (err) - return err; - i915_gem_object_lock(obj); if (i915_gem_object_is_framebuffer(obj)) { i915_gem_object_unlock(obj); return -EBUSY; } + err = i915_gem_object_fence_prepare(obj, tiling, stride); + if (err) { + i915_gem_object_unlock(obj); + return err; + } + /* If the memory has unknown (i.e. varying) swizzling, we pin the * pages to prevent them being swapped out and causing corruption * due to the change in swizzling. @@ -368,12 +372,7 @@ i915_gem_set_tiling_ioctl(struct drm_device *dev, void *data, } } - err = mutex_lock_interruptible(&dev->struct_mutex); - if (err) - goto err; - err = i915_gem_object_set_tiling(obj, args->tiling_mode, args->stride); - mutex_unlock(&dev->struct_mutex); /* We have to maintain this existing ABI... */ args->stride = i915_gem_object_get_stride(obj); diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c index a0d974ac78a7..3798502097b4 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c @@ -92,7 +92,6 @@ userptr_mn_invalidate_range_start(struct mmu_notifier *_mn, struct i915_mmu_notifier *mn = container_of(_mn, struct i915_mmu_notifier, mn); struct interval_tree_node *it; - struct mutex *unlock = NULL; unsigned long end; int ret = 0; @@ -129,33 +128,13 @@ userptr_mn_invalidate_range_start(struct mmu_notifier *_mn, } spin_unlock(&mn->lock); - if (!unlock) { - unlock = &mn->mm->i915->drm.struct_mutex; - - switch (mutex_trylock_recursive(unlock)) { - default: - case MUTEX_TRYLOCK_FAILED: - if (mutex_lock_killable_nested(unlock, I915_MM_SHRINKER)) { - i915_gem_object_put(obj); - return -EINTR; - } - /* fall through */ - case MUTEX_TRYLOCK_SUCCESS: - break; - - case MUTEX_TRYLOCK_RECURSIVE: - unlock = ERR_PTR(-EEXIST); - break; - } - } - ret = i915_gem_object_unbind(obj, I915_GEM_OBJECT_UNBIND_ACTIVE); if (ret == 0) ret = __i915_gem_object_put_pages(obj, I915_MM_SHRINKER); i915_gem_object_put(obj); if (ret) - goto unlock; + return ret; spin_lock(&mn->lock); @@ -168,10 +147,6 @@ userptr_mn_invalidate_range_start(struct mmu_notifier *_mn, } spin_unlock(&mn->lock); -unlock: - if (!IS_ERR_OR_NULL(unlock)) - mutex_unlock(unlock); - return ret; } diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c index c5cea4379216..98b2a6ccfcc1 100644 --- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c +++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c @@ -333,7 +333,12 @@ static int igt_check_page_sizes(struct i915_vma *vma) struct drm_i915_private *i915 = vma->vm->i915; unsigned int supported = INTEL_INFO(i915)->page_sizes; struct drm_i915_gem_object *obj = vma->obj; - int err = 0; + int err; + + /* We have to wait for the async bind to complete before our asserts */ + err = i915_vma_sync(vma); + if (err) + return err; if (!HAS_PAGE_SIZES(i915, vma->page_sizes.sg)) { pr_err("unsupported page_sizes.sg=%u, supported=%u\n", @@ -1390,7 +1395,7 @@ static int igt_ppgtt_pin_update(void *arg) goto out_unpin; } - err = i915_vma_bind(vma, I915_CACHE_NONE, PIN_UPDATE); + err = i915_vma_bind(vma, I915_CACHE_NONE, PIN_UPDATE, NULL); if (err) goto out_unpin; diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c index 0f4d0644a480..8eba0d3a31de 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c @@ -971,10 +971,7 @@ emit_rpcs_query(struct drm_i915_gem_object *obj, if (err) goto skip_request; - i915_vma_unpin(batch); - i915_vma_close(batch); - i915_vma_put(batch); - + i915_vma_unpin_and_release(&batch, 0); i915_vma_unpin(vma); *rq_out = i915_request_get(rq); @@ -988,8 +985,7 @@ skip_request: err_request: i915_request_add(rq); err_batch: - i915_vma_unpin(batch); - i915_vma_put(batch); + i915_vma_unpin_and_release(&batch, 0); err_vma: i915_vma_unpin(vma); @@ -1533,9 +1529,7 @@ static int write_to_scratch(struct i915_gem_context *ctx, if (err) goto skip_request; - i915_vma_unpin(vma); - i915_vma_close(vma); - i915_vma_put(vma); + i915_vma_unpin_and_release(&vma, 0); i915_request_add(rq); diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c index aefe557527f8..36aca1c172e7 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c @@ -322,7 +322,6 @@ static int igt_partial_tiling(void *arg) goto out; } - mutex_lock(&i915->drm.struct_mutex); wakeref = intel_runtime_pm_get(&i915->runtime_pm); if (1) { @@ -415,7 +414,6 @@ next_tiling: ; out_unlock: intel_runtime_pm_put(&i915->runtime_pm, wakeref); - mutex_unlock(&i915->drm.struct_mutex); i915_gem_object_unpin_pages(obj); out: i915_gem_object_put(obj); @@ -458,7 +456,6 @@ static int igt_smoke_tiling(void *arg) goto out; } - mutex_lock(&i915->drm.struct_mutex); wakeref = intel_runtime_pm_get(&i915->runtime_pm); count = 0; @@ -508,7 +505,6 @@ static int igt_smoke_tiling(void *arg) pr_info("%s: Completed %lu trials\n", __func__, count); intel_runtime_pm_put(&i915->runtime_pm, wakeref); - mutex_unlock(&i915->drm.struct_mutex); i915_gem_object_unpin_pages(obj); out: i915_gem_object_put(obj); diff --git a/drivers/gpu/drm/i915/gem/selftests/igt_gem_utils.c b/drivers/gpu/drm/i915/gem/selftests/igt_gem_utils.c index ee5dc13a30b3..6718da20f35d 100644 --- a/drivers/gpu/drm/i915/gem/selftests/igt_gem_utils.c +++ b/drivers/gpu/drm/i915/gem/selftests/igt_gem_utils.c @@ -154,9 +154,7 @@ int igt_gpu_fill_dw(struct intel_context *ce, i915_request_add(rq); - i915_vma_unpin(batch); - i915_vma_close(batch); - i915_vma_put(batch); + i915_vma_unpin_and_release(&batch, 0); return 0; @@ -165,7 +163,6 @@ skip_request: err_request: i915_request_add(rq); err_batch: - i915_vma_unpin(batch); - i915_vma_put(batch); + i915_vma_unpin_and_release(&batch, 0); return err; } diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index 0e5909ee0657..7205595369be 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -302,11 +302,12 @@ void intel_gt_flush_ggtt_writes(struct intel_gt *gt) with_intel_runtime_pm(&i915->runtime_pm, wakeref) { struct intel_uncore *uncore = gt->uncore; + unsigned long flags; - spin_lock_irq(&uncore->lock); + spin_lock_irqsave(&uncore->lock, flags); intel_uncore_posting_read_fw(uncore, RING_HEAD(RENDER_RING_BASE)); - spin_unlock_irq(&uncore->lock); + spin_unlock_irqrestore(&uncore->lock, flags); } } diff --git a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c index 0747b8c9f768..ec32996254c0 100644 --- a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c @@ -1338,15 +1338,13 @@ void intel_ring_free(struct kref *ref) { struct intel_ring *ring = container_of(ref, typeof(*ring), ref); - i915_vma_close(ring->vma); i915_vma_put(ring->vma); - kfree(ring); } static void __ring_context_fini(struct intel_context *ce) { - i915_gem_object_put(ce->state->obj); + i915_vma_put(ce->state); } static void ring_context_destroy(struct kref *ref) diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c index 9c0c8441c22a..d3bee9f88008 100644 --- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c +++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c @@ -1127,15 +1127,14 @@ static int evict_vma(void *data) { struct evict_vma *arg = data; struct i915_address_space *vm = arg->vma->vm; - struct drm_i915_private *i915 = vm->i915; struct drm_mm_node evict = arg->vma->node; int err; complete(&arg->completion); - mutex_lock(&i915->drm.struct_mutex); + mutex_lock(&vm->mutex); err = i915_gem_evict_for_node(vm, &evict, 0); - mutex_unlock(&i915->drm.struct_mutex); + mutex_unlock(&vm->mutex); return err; } @@ -1143,39 +1142,33 @@ static int evict_vma(void *data) static int evict_fence(void *data) { struct evict_vma *arg = data; - struct drm_i915_private *i915 = arg->vma->vm->i915; int err; complete(&arg->completion); - mutex_lock(&i915->drm.struct_mutex); - /* Mark the fence register as dirty to force the mmio update. */ err = i915_gem_object_set_tiling(arg->vma->obj, I915_TILING_Y, 512); if (err) { pr_err("Invalid Y-tiling settings; err:%d\n", err); - goto out_unlock; + return err; } err = i915_vma_pin(arg->vma, 0, 0, PIN_GLOBAL | PIN_MAPPABLE); if (err) { pr_err("Unable to pin vma for Y-tiled fence; err:%d\n", err); - goto out_unlock; + return err; } err = i915_vma_pin_fence(arg->vma); i915_vma_unpin(arg->vma); if (err) { pr_err("Unable to pin Y-tiled fence; err:%d\n", err); - goto out_unlock; + return err; } i915_vma_unpin_fence(arg->vma); -out_unlock: - mutex_unlock(&i915->drm.struct_mutex); - - return err; + return 0; } static int __igt_reset_evict_vma(struct intel_gt *gt, diff --git a/drivers/gpu/drm/i915/gvt/aperture_gm.c b/drivers/gpu/drm/i915/gvt/aperture_gm.c index 5ff2437b2998..d996bbc7ea59 100644 --- a/drivers/gpu/drm/i915/gvt/aperture_gm.c +++ b/drivers/gpu/drm/i915/gvt/aperture_gm.c @@ -61,14 +61,14 @@ static int alloc_gm(struct intel_vgpu *vgpu, bool high_gm) flags = PIN_MAPPABLE; } - mutex_lock(&dev_priv->drm.struct_mutex); + mutex_lock(&dev_priv->ggtt.vm.mutex); mmio_hw_access_pre(dev_priv); ret = i915_gem_gtt_insert(&dev_priv->ggtt.vm, node, size, I915_GTT_PAGE_SIZE, I915_COLOR_UNEVICTABLE, start, end, flags); mmio_hw_access_post(dev_priv); - mutex_unlock(&dev_priv->drm.struct_mutex); + mutex_unlock(&dev_priv->ggtt.vm.mutex); if (ret) gvt_err("fail to alloc %s gm space from host\n", high_gm ? "high" : "low"); @@ -98,9 +98,9 @@ static int alloc_vgpu_gm(struct intel_vgpu *vgpu) return 0; out_free_aperture: - mutex_lock(&dev_priv->drm.struct_mutex); + mutex_lock(&dev_priv->ggtt.vm.mutex); drm_mm_remove_node(&vgpu->gm.low_gm_node); - mutex_unlock(&dev_priv->drm.struct_mutex); + mutex_unlock(&dev_priv->ggtt.vm.mutex); return ret; } @@ -108,10 +108,10 @@ static void free_vgpu_gm(struct intel_vgpu *vgpu) { struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv; - mutex_lock(&dev_priv->drm.struct_mutex); + mutex_lock(&dev_priv->ggtt.vm.mutex); drm_mm_remove_node(&vgpu->gm.low_gm_node); drm_mm_remove_node(&vgpu->gm.high_gm_node); - mutex_unlock(&dev_priv->drm.struct_mutex); + mutex_unlock(&dev_priv->ggtt.vm.mutex); } /** diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c index d5aac6ff803a..0791736a08fd 100644 --- a/drivers/gpu/drm/i915/i915_active.c +++ b/drivers/gpu/drm/i915/i915_active.c @@ -146,6 +146,7 @@ __active_retire(struct i915_active *ref) if (!retire) return; + GEM_BUG_ON(rcu_access_pointer(ref->excl)); rbtree_postorder_for_each_entry_safe(it, n, &root, node) { GEM_BUG_ON(i915_active_request_isset(&it->base)); kmem_cache_free(global.slab_cache, it); @@ -245,6 +246,8 @@ void __i915_active_init(struct drm_i915_private *i915, ref->flags = 0; ref->active = active; ref->retire = retire; + + ref->excl = NULL; ref->tree = RB_ROOT; ref->cache = NULL; init_llist_head(&ref->preallocated_barriers); @@ -341,6 +344,46 @@ out: return err; } +static void excl_cb(struct dma_fence *f, struct dma_fence_cb *cb) +{ + struct i915_active *ref = container_of(cb, typeof(*ref), excl_cb); + + RCU_INIT_POINTER(ref->excl, NULL); + dma_fence_put(f); + + active_retire(ref); +} + +void i915_active_set_exclusive(struct i915_active *ref, struct dma_fence *f) +{ + /* We expect the caller to manage the exclusive timeline ordering */ + GEM_BUG_ON(i915_active_is_idle(ref)); + + dma_fence_get(f); + + rcu_read_lock(); + if (rcu_access_pointer(ref->excl)) { + struct dma_fence *old; + + old = dma_fence_get_rcu_safe(&ref->excl); + if (old) { + if (dma_fence_remove_callback(old, &ref->excl_cb)) + atomic_dec(&ref->count); + dma_fence_put(old); + } + } + rcu_read_unlock(); + + atomic_inc(&ref->count); + rcu_assign_pointer(ref->excl, f); + + if (dma_fence_add_callback(f, &ref->excl_cb, excl_cb)) { + RCU_INIT_POINTER(ref->excl, NULL); + atomic_dec(&ref->count); + dma_fence_put(f); + } +} + int i915_active_acquire(struct i915_active *ref) { int err; @@ -399,6 +442,25 @@ void i915_active_ungrab(struct i915_active *ref) __active_ungrab(ref); } +static int excl_wait(struct i915_active *ref) +{ + struct dma_fence *old; + int err = 0; + + if (!rcu_access_pointer(ref->excl)) + return 0; + + rcu_read_lock(); + old = dma_fence_get_rcu_safe(&ref->excl); + rcu_read_unlock(); + if (old) { + err = dma_fence_wait(old, true); + dma_fence_put(old); + } + + return err; +} + int i915_active_wait(struct i915_active *ref) { struct active_node *it, *n; @@ -419,6 +481,10 @@ int i915_active_wait(struct i915_active *ref) return 0; } + err = excl_wait(ref); + if (err) + goto out; + rbtree_postorder_for_each_entry_safe(it, n, &ref->tree, node) { if (is_barrier(&it->base)) { /* unconnected idle-barrier */ err = -EBUSY; @@ -430,6 +496,7 @@ int i915_active_wait(struct i915_active *ref) break; } +out: __active_retire(ref); if (err) return err; @@ -454,26 +521,22 @@ int i915_request_await_active_request(struct i915_request *rq, int i915_request_await_active(struct i915_request *rq, struct i915_active *ref) { - struct active_node *it, *n; - int err; - - if (RB_EMPTY_ROOT(&ref->tree)) - return 0; + int err = 0; - /* await allocates and so we need to avoid hitting the shrinker */ - err = i915_active_acquire(ref); - if (err) - return err; + if (rcu_access_pointer(ref->excl)) { + struct dma_fence *fence; - mutex_lock(&ref->mutex); - rbtree_postorder_for_each_entry_safe(it, n, &ref->tree, node) { - err = i915_request_await_active_request(rq, &it->base); - if (err) - break; + rcu_read_lock(); + fence = dma_fence_get_rcu_safe(&ref->excl); + rcu_read_unlock(); + if (fence) { + err = i915_request_await_dma_fence(rq, fence); + dma_fence_put(fence); + } } - mutex_unlock(&ref->mutex); - i915_active_release(ref); + /* In the future we may choose to await on all fences */ + return err; } diff --git a/drivers/gpu/drm/i915/i915_active.h b/drivers/gpu/drm/i915/i915_active.h index 949c6835335b..90034f61b7c2 100644 --- a/drivers/gpu/drm/i915/i915_active.h +++ b/drivers/gpu/drm/i915/i915_active.h @@ -379,6 +379,13 @@ i915_active_add_request(struct i915_active *ref, struct i915_request *rq) return i915_active_ref(ref, i915_request_timeline(rq), rq); } +void i915_active_set_exclusive(struct i915_active *ref, struct dma_fence *f); + +static inline bool i915_active_has_exclusive(struct i915_active *ref) +{ + return rcu_access_pointer(ref->excl); +} + int i915_active_wait(struct i915_active *ref); int i915_request_await_active(struct i915_request *rq, diff --git a/drivers/gpu/drm/i915/i915_active_types.h b/drivers/gpu/drm/i915/i915_active_types.h index 1854e7d168c1..86e7a232ea3c 100644 --- a/drivers/gpu/drm/i915/i915_active_types.h +++ b/drivers/gpu/drm/i915/i915_active_types.h @@ -8,6 +8,7 @@ #define _I915_ACTIVE_TYPES_H_ #include <linux/atomic.h> +#include <linux/dma-fence.h> #include <linux/llist.h> #include <linux/mutex.h> #include <linux/rbtree.h> @@ -51,6 +52,10 @@ struct i915_active { struct mutex mutex; atomic_t count; + /* Preallocated "exclusive" node */ + struct dma_fence __rcu *excl; + struct dma_fence_cb excl_cb; + unsigned long flags; #define I915_ACTIVE_GRAB_BIT 0 diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 1d2246c59cde..b711324ca294 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -1895,10 +1895,8 @@ static int i915_drm_resume(struct drm_device *dev) if (ret) DRM_ERROR("failed to re-enable GGTT\n"); - mutex_lock(&dev_priv->drm.struct_mutex); i915_gem_restore_gtt_mappings(dev_priv); i915_gem_restore_fences(dev_priv); - mutex_unlock(&dev_priv->drm.struct_mutex); intel_csr_ucode_resume(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index fa8e028ac0b5..fc5c618f6c19 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -62,20 +62,31 @@ #include "intel_pm.h" static int -insert_mappable_node(struct i915_ggtt *ggtt, - struct drm_mm_node *node, u32 size) +insert_mappable_node(struct i915_ggtt *ggtt, struct drm_mm_node *node, u32 size) { + int err; + + err = mutex_lock_interruptible(&ggtt->vm.mutex); + if (err) + return err; + memset(node, 0, sizeof(*node)); - return drm_mm_insert_node_in_range(&ggtt->vm.mm, node, - size, 0, I915_COLOR_UNEVICTABLE, - 0, ggtt->mappable_end, - DRM_MM_INSERT_LOW); + err = drm_mm_insert_node_in_range(&ggtt->vm.mm, node, + size, 0, I915_COLOR_UNEVICTABLE, + 0, ggtt->mappable_end, + DRM_MM_INSERT_LOW); + + mutex_unlock(&ggtt->vm.mutex); + + return err; } static void -remove_mappable_node(struct drm_mm_node *node) +remove_mappable_node(struct i915_ggtt *ggtt, struct drm_mm_node *node) { + mutex_lock(&ggtt->vm.mutex); drm_mm_remove_node(node); + mutex_unlock(&ggtt->vm.mutex); } int @@ -87,7 +98,8 @@ i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, struct i915_vma *vma; u64 pinned; - mutex_lock(&ggtt->vm.mutex); + if (mutex_lock_interruptible(&ggtt->vm.mutex)) + return -EINTR; pinned = ggtt->vm.reserved; list_for_each_entry(vma, &ggtt->vm.bound_list, vm_link) @@ -109,20 +121,24 @@ int i915_gem_object_unbind(struct drm_i915_gem_object *obj, LIST_HEAD(still_in_list); int ret = 0; - lockdep_assert_held(&obj->base.dev->struct_mutex); - spin_lock(&obj->vma.lock); while (!ret && (vma = list_first_entry_or_null(&obj->vma.list, struct i915_vma, obj_link))) { + struct i915_address_space *vm = vma->vm; + + ret = -EBUSY; + if (!i915_vm_tryopen(vm)) + break; + list_move_tail(&vma->obj_link, &still_in_list); spin_unlock(&obj->vma.lock); - ret = -EBUSY; if (flags & I915_GEM_OBJECT_UNBIND_ACTIVE || !i915_vma_is_active(vma)) ret = i915_vma_unbind(vma); + i915_vm_close(vm); spin_lock(&obj->vma.lock); } list_splice(&still_in_list, &obj->vma.list); @@ -338,10 +354,6 @@ i915_gem_gtt_pread(struct drm_i915_gem_object *obj, u64 remain, offset; int ret; - ret = mutex_lock_interruptible(&i915->drm.struct_mutex); - if (ret) - return ret; - wakeref = intel_runtime_pm_get(&i915->runtime_pm); vma = ERR_PTR(-ENODEV); if (!i915_gem_object_is_tiled(obj)) @@ -355,12 +367,10 @@ i915_gem_gtt_pread(struct drm_i915_gem_object *obj, } else { ret = insert_mappable_node(ggtt, &node, PAGE_SIZE); if (ret) - goto out_unlock; + goto out_rpm; GEM_BUG_ON(!drm_mm_node_allocated(&node)); } - mutex_unlock(&i915->drm.struct_mutex); - ret = i915_gem_object_lock_interruptible(obj); if (ret) goto out_unpin; @@ -414,17 +424,14 @@ i915_gem_gtt_pread(struct drm_i915_gem_object *obj, i915_gem_object_unlock_fence(obj, fence); out_unpin: - mutex_lock(&i915->drm.struct_mutex); if (drm_mm_node_allocated(&node)) { ggtt->vm.clear_range(&ggtt->vm, node.start, node.size); - remove_mappable_node(&node); + remove_mappable_node(ggtt, &node); } else { i915_vma_unpin(vma); } -out_unlock: +out_rpm: intel_runtime_pm_put(&i915->runtime_pm, wakeref); - mutex_unlock(&i915->drm.struct_mutex); - return ret; } @@ -531,10 +538,6 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj, void __user *user_data; int ret; - ret = mutex_lock_interruptible(&i915->drm.struct_mutex); - if (ret) - return ret; - if (i915_gem_object_has_struct_page(obj)) { /* * Avoid waking the device up if we can fallback, as @@ -544,10 +547,8 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj, * using the cache bypass of indirect GGTT access. */ wakeref = intel_runtime_pm_get_if_in_use(rpm); - if (!wakeref) { - ret = -EFAULT; - goto out_unlock; - } + if (!wakeref) + return -EFAULT; } else { /* No backing pages, no fallback, we must force GGTT access */ wakeref = intel_runtime_pm_get(rpm); @@ -569,8 +570,6 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj, GEM_BUG_ON(!drm_mm_node_allocated(&node)); } - mutex_unlock(&i915->drm.struct_mutex); - ret = i915_gem_object_lock_interruptible(obj); if (ret) goto out_unpin; @@ -634,18 +633,15 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj, i915_gem_object_unlock_fence(obj, fence); out_unpin: - mutex_lock(&i915->drm.struct_mutex); intel_gt_flush_ggtt_writes(ggtt->vm.gt); if (drm_mm_node_allocated(&node)) { ggtt->vm.clear_range(&ggtt->vm, node.start, node.size); - remove_mappable_node(&node); + remove_mappable_node(ggtt, &node); } else { i915_vma_unpin(vma); } out_rpm: intel_runtime_pm_put(rpm, wakeref); -out_unlock: - mutex_unlock(&i915->drm.struct_mutex); return ret; } @@ -968,8 +964,6 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj, struct i915_vma *vma; int ret; - lockdep_assert_held(&obj->base.dev->struct_mutex); - if (i915_gem_object_never_bind_ggtt(obj)) return ERR_PTR(-ENODEV); @@ -1019,13 +1013,6 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj, return ERR_PTR(-ENOSPC); } - WARN(i915_vma_is_pinned(vma), - "bo is already pinned in ggtt with incorrect alignment:" - " offset=%08x, req.alignment=%llx," - " req.map_and_fenceable=%d, vma->map_and_fenceable=%d\n", - i915_ggtt_offset(vma), alignment, - !!(flags & PIN_MAPPABLE), - i915_vma_is_map_and_fenceable(vma)); ret = i915_vma_unbind(vma); if (ret) return ERR_PTR(ret); @@ -1444,8 +1431,6 @@ err_unlock: } if (ret == -EIO) { - mutex_lock(&dev_priv->drm.struct_mutex); - /* * Allow engines or uC initialisation to fail by marking the GPU * as wedged. But we only want to do this when the GPU is angry, @@ -1462,8 +1447,6 @@ err_unlock: i915_gem_restore_gtt_mappings(dev_priv); i915_gem_restore_fences(dev_priv); intel_init_clock_gating(dev_priv); - - mutex_unlock(&dev_priv->drm.struct_mutex); } i915_gem_drain_freed_objects(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c index 8c1e04f402bc..0552bf93eea3 100644 --- a/drivers/gpu/drm/i915/i915_gem_evict.c +++ b/drivers/gpu/drm/i915/i915_gem_evict.c @@ -47,8 +47,7 @@ static int ggtt_flush(struct drm_i915_private *i915) * bound by their active reference. */ return i915_gem_wait_for_idle(i915, - I915_WAIT_INTERRUPTIBLE | - I915_WAIT_LOCKED, + I915_WAIT_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT); } @@ -104,7 +103,7 @@ i915_gem_evict_something(struct i915_address_space *vm, struct i915_vma *active; int ret; - lockdep_assert_held(&vm->i915->drm.struct_mutex); + lockdep_assert_held(&vm->mutex); trace_i915_gem_evict(vm, min_size, alignment, flags); /* @@ -127,15 +126,6 @@ i915_gem_evict_something(struct i915_address_space *vm, min_size, alignment, color, start, end, mode); - /* - * Retire before we search the active list. Although we have - * reasonable accuracy in our retirement lists, we may have - * a stray pin (preventing eviction) that can only be resolved by - * retiring. - */ - if (!(flags & PIN_NONBLOCK)) - i915_retire_requests(dev_priv); - search_again: active = NULL; INIT_LIST_HEAD(&eviction_list); @@ -235,12 +225,12 @@ found: list_for_each_entry_safe(vma, next, &eviction_list, evict_link) { __i915_vma_unpin(vma); if (ret == 0) - ret = i915_vma_unbind(vma); + ret = __i915_vma_unbind(vma); } while (ret == 0 && (node = drm_mm_scan_color_evict(&scan))) { vma = container_of(node, struct i915_vma, node); - ret = i915_vma_unbind(vma); + ret = __i915_vma_unbind(vma); } return ret; @@ -268,7 +258,7 @@ int i915_gem_evict_for_node(struct i915_address_space *vm, struct i915_vma *vma, *next; int ret = 0; - lockdep_assert_held(&vm->i915->drm.struct_mutex); + lockdep_assert_held(&vm->mutex); GEM_BUG_ON(!IS_ALIGNED(start, I915_GTT_PAGE_SIZE)); GEM_BUG_ON(!IS_ALIGNED(end, I915_GTT_PAGE_SIZE)); @@ -349,7 +339,7 @@ int i915_gem_evict_for_node(struct i915_address_space *vm, list_for_each_entry_safe(vma, next, &eviction_list, evict_link) { __i915_vma_unpin(vma); if (ret == 0) - ret = i915_vma_unbind(vma); + ret = __i915_vma_unbind(vma); } return ret; @@ -373,7 +363,7 @@ int i915_gem_evict_vm(struct i915_address_space *vm) struct i915_vma *vma, *next; int ret; - lockdep_assert_held(&vm->i915->drm.struct_mutex); + lockdep_assert_held(&vm->mutex); trace_i915_gem_evict_vm(vm); /* Switch back to the default context in order to unpin @@ -388,7 +378,6 @@ int i915_gem_evict_vm(struct i915_address_space *vm) } INIT_LIST_HEAD(&eviction_list); - mutex_lock(&vm->mutex); list_for_each_entry(vma, &vm->bound_list, vm_link) { if (i915_vma_is_pinned(vma)) continue; @@ -396,13 +385,12 @@ int i915_gem_evict_vm(struct i915_address_space *vm) __i915_vma_pin(vma); list_add(&vma->evict_link, &eviction_list); } - mutex_unlock(&vm->mutex); ret = 0; list_for_each_entry_safe(vma, next, &eviction_list, evict_link) { __i915_vma_unpin(vma); if (ret == 0) - ret = i915_vma_unbind(vma); + ret = __i915_vma_unbind(vma); } return ret; } diff --git a/drivers/gpu/drm/i915/i915_gem_fence_reg.c b/drivers/gpu/drm/i915/i915_gem_fence_reg.c index 615a9f4ef30c..487b7261f7ed 100644 --- a/drivers/gpu/drm/i915/i915_gem_fence_reg.c +++ b/drivers/gpu/drm/i915/i915_gem_fence_reg.c @@ -230,14 +230,15 @@ static int fence_update(struct i915_fence_reg *fence, i915_gem_object_get_tiling(vma->obj))) return -EINVAL; - ret = i915_active_wait(&vma->active); + ret = i915_vma_sync(vma); if (ret) return ret; } old = xchg(&fence->vma, NULL); if (old) { - ret = i915_active_wait(&old->active); + /* XXX Ideally we would move the waiting to outside the mutex */ + ret = i915_vma_sync(old); if (ret) { fence->vma = old; return ret; @@ -331,13 +332,15 @@ static struct i915_fence_reg *fence_find(struct drm_i915_private *i915) return ERR_PTR(-EDEADLK); } -static int __i915_vma_pin_fence(struct i915_vma *vma) +int __i915_vma_pin_fence(struct i915_vma *vma) { struct i915_ggtt *ggtt = i915_vm_to_ggtt(vma->vm); struct i915_fence_reg *fence; struct i915_vma *set = i915_gem_object_is_tiled(vma->obj) ? vma : NULL; int err; + lockdep_assert_held(&vma->vm->mutex); + /* Just update our place in the LRU if our fence is getting reused. */ if (vma->fence) { fence = vma->fence; diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 8eba63ecdb03..55cebf256d03 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -150,16 +150,18 @@ static void gmch_ggtt_invalidate(struct i915_ggtt *ggtt) static int ppgtt_bind_vma(struct i915_vma *vma, enum i915_cache_level cache_level, - u32 unused) + u32 flags) { u32 pte_flags; int err; - if (!i915_vma_is_bound(vma, I915_VMA_LOCAL_BIND)) { + if (flags & I915_VMA_ALLOC) { err = vma->vm->allocate_va_range(vma->vm, vma->node.start, vma->size); if (err) return err; + + set_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma)); } /* Applicable to VLV, and gen8+ */ @@ -167,6 +169,7 @@ static int ppgtt_bind_vma(struct i915_vma *vma, if (i915_gem_object_is_readonly(vma->obj)) pte_flags |= PTE_READ_ONLY; + GEM_BUG_ON(!test_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma))); vma->vm->insert_entries(vma->vm, vma, cache_level, pte_flags); wmb(); @@ -175,7 +178,8 @@ static int ppgtt_bind_vma(struct i915_vma *vma, static void ppgtt_unbind_vma(struct i915_vma *vma) { - vma->vm->clear_range(vma->vm, vma->node.start, vma->size); + if (test_and_clear_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma))) + vma->vm->clear_range(vma->vm, vma->node.start, vma->size); } static int ppgtt_set_pages(struct i915_vma *vma) @@ -503,15 +507,26 @@ static void i915_address_space_fini(struct i915_address_space *vm) mutex_destroy(&vm->mutex); } -static void ppgtt_destroy_vma(struct i915_address_space *vm) +void __i915_vm_close(struct i915_address_space *vm) { struct i915_vma *vma, *vn; - mutex_lock(&vm->i915->drm.struct_mutex); - list_for_each_entry_safe(vma, vn, &vm->bound_list, vm_link) + mutex_lock(&vm->mutex); + list_for_each_entry_safe(vma, vn, &vm->bound_list, vm_link) { + struct drm_i915_gem_object *obj = vma->obj; + + /* Keep the obj (and hence the vma) alive as _we_ destroy it */ + if (!kref_get_unless_zero(&obj->base.refcount)) + continue; + + atomic_and(~I915_VMA_PIN_MASK, &vma->flags); + WARN_ON(__i915_vma_unbind(vma)); i915_vma_destroy(vma); + + i915_gem_object_put(obj); + } GEM_BUG_ON(!list_empty(&vm->bound_list)); - mutex_unlock(&vm->i915->drm.struct_mutex); + mutex_unlock(&vm->mutex); } static void __i915_vm_release(struct work_struct *work) @@ -519,8 +534,6 @@ static void __i915_vm_release(struct work_struct *work) struct i915_address_space *vm = container_of(work, struct i915_address_space, rcu.work); - ppgtt_destroy_vma(vm); - vm->cleanup(vm); i915_address_space_fini(vm); @@ -535,7 +548,6 @@ void i915_vm_release(struct kref *kref) GEM_BUG_ON(i915_is_ggtt(vm)); trace_i915_ppgtt_release(vm); - vm->closed = true; queue_rcu_work(vm->i915->wq, &vm->rcu); } @@ -543,6 +555,7 @@ static void i915_address_space_init(struct i915_address_space *vm, int subclass) { kref_init(&vm->ref); INIT_RCU_WORK(&vm->rcu, __i915_vm_release); + atomic_set(&vm->open, 1); /* * The vm->mutex must be reclaim safe (for use in the shrinker). @@ -1771,12 +1784,8 @@ static void gen6_ppgtt_free_pd(struct gen6_ppgtt *ppgtt) static void gen6_ppgtt_cleanup(struct i915_address_space *vm) { struct gen6_ppgtt *ppgtt = to_gen6_ppgtt(i915_vm_to_ppgtt(vm)); - struct drm_i915_private *i915 = vm->i915; - /* FIXME remove the struct_mutex to bring the locking under control */ - mutex_lock(&i915->drm.struct_mutex); i915_vma_destroy(ppgtt->vma); - mutex_unlock(&i915->drm.struct_mutex); gen6_ppgtt_free_pd(ppgtt); free_scratch(vm); @@ -1865,7 +1874,8 @@ static struct i915_vma *pd_vma_create(struct gen6_ppgtt *ppgtt, int size) i915_active_init(i915, &vma->active, NULL, NULL); - vma->vm = &ggtt->vm; + mutex_init(&vma->pages_mutex); + vma->vm = i915_vm_get(&ggtt->vm); vma->ops = &pd_vma_ops; vma->private = ppgtt; @@ -1885,7 +1895,7 @@ int gen6_ppgtt_pin(struct i915_ppgtt *base) struct gen6_ppgtt *ppgtt = to_gen6_ppgtt(base); int err = 0; - GEM_BUG_ON(ppgtt->base.vm.closed); + GEM_BUG_ON(!atomic_read(&ppgtt->base.vm.open)); /* * Workaround the limited maximum vma->pin_count and the aliasing_ppgtt @@ -2463,14 +2473,18 @@ static int aliasing_gtt_bind_vma(struct i915_vma *vma, if (flags & I915_VMA_LOCAL_BIND) { struct i915_ppgtt *alias = i915_vm_to_ggtt(vma->vm)->alias; - if (!i915_vma_is_bound(vma, I915_VMA_LOCAL_BIND)) { + if (flags & I915_VMA_ALLOC) { ret = alias->vm.allocate_va_range(&alias->vm, vma->node.start, vma->size); if (ret) return ret; + + set_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma)); } + GEM_BUG_ON(!test_bit(I915_VMA_ALLOC_BIT, + __i915_vma_flags(vma))); alias->vm.insert_entries(&alias->vm, vma, cache_level, pte_flags); } @@ -2499,7 +2513,7 @@ static void aliasing_gtt_unbind_vma(struct i915_vma *vma) vm->clear_range(vm, vma->node.start, vma->size); } - if (i915_vma_is_bound(vma, I915_VMA_LOCAL_BIND)) { + if (test_and_clear_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma))) { struct i915_address_space *vm = &i915_vm_to_ggtt(vma->vm)->alias->vm; @@ -2602,22 +2616,16 @@ err_ppgtt: static void fini_aliasing_ppgtt(struct i915_ggtt *ggtt) { - struct drm_i915_private *i915 = ggtt->vm.i915; struct i915_ppgtt *ppgtt; - mutex_lock(&i915->drm.struct_mutex); - ppgtt = fetch_and_zero(&ggtt->alias); if (!ppgtt) - goto out; + return; i915_vm_put(&ppgtt->vm); ggtt->vm.vma_ops.bind_vma = ggtt_bind_vma; ggtt->vm.vma_ops.unbind_vma = ggtt_unbind_vma; - -out: - mutex_unlock(&i915->drm.struct_mutex); } static int ggtt_reserve_guc_top(struct i915_ggtt *ggtt) @@ -2734,32 +2742,28 @@ int i915_init_ggtt(struct drm_i915_private *i915) static void ggtt_cleanup_hw(struct i915_ggtt *ggtt) { - struct drm_i915_private *i915 = ggtt->vm.i915; struct i915_vma *vma, *vn; - ggtt->vm.closed = true; + atomic_set(&ggtt->vm.open, 0); rcu_barrier(); /* flush the RCU'ed__i915_vm_release */ - flush_workqueue(i915->wq); + flush_workqueue(ggtt->vm.i915->wq); - mutex_lock(&i915->drm.struct_mutex); + mutex_lock(&ggtt->vm.mutex); list_for_each_entry_safe(vma, vn, &ggtt->vm.bound_list, vm_link) - WARN_ON(i915_vma_unbind(vma)); + WARN_ON(__i915_vma_unbind(vma)); if (drm_mm_node_allocated(&ggtt->error_capture)) drm_mm_remove_node(&ggtt->error_capture); ggtt_release_guc_top(ggtt); - - if (drm_mm_initialized(&ggtt->vm.mm)) { - intel_vgt_deballoon(ggtt); - i915_address_space_fini(&ggtt->vm); - } + intel_vgt_deballoon(ggtt); ggtt->vm.cleanup(&ggtt->vm); - mutex_unlock(&i915->drm.struct_mutex); + mutex_unlock(&ggtt->vm.mutex); + i915_address_space_fini(&ggtt->vm); arch_phys_wc_del(ggtt->mtrr); io_mapping_fini(&ggtt->iomap); @@ -3188,9 +3192,6 @@ int i915_ggtt_probe_hw(struct drm_i915_private *i915) static int ggtt_init_hw(struct i915_ggtt *ggtt) { struct drm_i915_private *i915 = ggtt->vm.i915; - int ret = 0; - - mutex_lock(&i915->drm.struct_mutex); i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT); @@ -3206,18 +3207,14 @@ static int ggtt_init_hw(struct i915_ggtt *ggtt) ggtt->gmadr.start, ggtt->mappable_end)) { ggtt->vm.cleanup(&ggtt->vm); - ret = -EIO; - goto out; + return -EIO; } ggtt->mtrr = arch_phys_wc_add(ggtt->gmadr.start, ggtt->mappable_end); i915_ggtt_init_fences(ggtt); -out: - mutex_unlock(&i915->drm.struct_mutex); - - return ret; + return 0; } /** @@ -3289,6 +3286,7 @@ static void ggtt_restore_mappings(struct i915_ggtt *ggtt) { struct i915_vma *vma, *vn; bool flush = false; + int open; intel_gt_check_and_clear_faults(ggtt->vm.gt); @@ -3296,7 +3294,9 @@ static void ggtt_restore_mappings(struct i915_ggtt *ggtt) /* First fill our portion of the GTT with scratch pages */ ggtt->vm.clear_range(&ggtt->vm, 0, ggtt->vm.total); - ggtt->vm.closed = true; /* skip rewriting PTE on VMA unbind */ + + /* Skip rewriting PTE on VMA unbind. */ + open = atomic_xchg(&ggtt->vm.open, 0); /* clflush objects bound into the GGTT and rebind them. */ list_for_each_entry_safe(vma, vn, &ggtt->vm.bound_list, vm_link) { @@ -3305,24 +3305,20 @@ static void ggtt_restore_mappings(struct i915_ggtt *ggtt) if (!i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND)) continue; - mutex_unlock(&ggtt->vm.mutex); - - if (!i915_vma_unbind(vma)) - goto lock; + if (!__i915_vma_unbind(vma)) + continue; + clear_bit(I915_VMA_GLOBAL_BIND_BIT, __i915_vma_flags(vma)); WARN_ON(i915_vma_bind(vma, obj ? obj->cache_level : 0, - PIN_UPDATE)); + PIN_GLOBAL, NULL)); if (obj) { /* only used during resume => exclusive access */ flush |= fetch_and_zero(&obj->write_domain); obj->read_domains |= I915_GEM_DOMAIN_GTT; } - -lock: - mutex_lock(&ggtt->vm.mutex); } - ggtt->vm.closed = false; + atomic_set(&ggtt->vm.open, open); ggtt->invalidate(ggtt); mutex_unlock(&ggtt->vm.mutex); @@ -3714,7 +3710,8 @@ int i915_gem_gtt_insert(struct i915_address_space *vm, u64 offset; int err; - lockdep_assert_held(&vm->i915->drm.struct_mutex); + lockdep_assert_held(&vm->mutex); + GEM_BUG_ON(!size); GEM_BUG_ON(!IS_ALIGNED(size, I915_GTT_PAGE_SIZE)); GEM_BUG_ON(alignment && !is_power_of_2(alignment)); diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index 3502b9c85a8e..0a18fdfe63ff 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -307,7 +307,14 @@ struct i915_address_space { unsigned int bind_async_flags; - bool closed; + /* + * Each active user context has its own address space (in full-ppgtt). + * Since the vm may be shared between multiple contexts, we count how + * many contexts keep us "open". Once open hits zero, we are closed + * and do not allow any new attachments, and proceed to shutdown our + * vma and page directories. + */ + atomic_t open; struct mutex mutex; /* protects vma and our lists */ #define VM_CLASS_GGTT 0 @@ -581,6 +588,35 @@ static inline void i915_vm_put(struct i915_address_space *vm) kref_put(&vm->ref, i915_vm_release); } +static inline struct i915_address_space * +i915_vm_open(struct i915_address_space *vm) +{ + GEM_BUG_ON(!atomic_read(&vm->open)); + atomic_inc(&vm->open); + return i915_vm_get(vm); +} + +static inline bool +i915_vm_tryopen(struct i915_address_space *vm) +{ + if (atomic_add_unless(&vm->open, 1, 0)) + return i915_vm_get(vm); + + return false; +} + +void __i915_vm_close(struct i915_address_space *vm); + +static inline void +i915_vm_close(struct i915_address_space *vm) +{ + GEM_BUG_ON(!atomic_read(&vm->open)); + if (atomic_dec_and_test(&vm->open)) + __i915_vm_close(vm); + + i915_vm_put(vm); +} + int gen6_ppgtt_pin(struct i915_ppgtt *base); void gen6_ppgtt_unpin(struct i915_ppgtt *base); void gen6_ppgtt_unpin_all(struct i915_ppgtt *base); @@ -613,10 +649,9 @@ int i915_gem_gtt_insert(struct i915_address_space *vm, #define PIN_OFFSET_BIAS BIT_ULL(6) #define PIN_OFFSET_FIXED BIT_ULL(7) -#define PIN_MBZ BIT_ULL(8) /* I915_VMA_PIN_OVERFLOW */ -#define PIN_GLOBAL BIT_ULL(9) /* I915_VMA_GLOBAL_BIND */ -#define PIN_USER BIT_ULL(10) /* I915_VMA_LOCAL_BIND */ -#define PIN_UPDATE BIT_ULL(11) +#define PIN_UPDATE BIT_ULL(9) +#define PIN_GLOBAL BIT_ULL(10) /* I915_VMA_GLOBAL_BIND */ +#define PIN_USER BIT_ULL(11) /* I915_VMA_LOCAL_BIND */ #define PIN_OFFSET_MASK (-I915_GTT_PAGE_SIZE) diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 524f6710b7aa..80055501eccb 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -1204,15 +1204,10 @@ static int i915_oa_read(struct i915_perf_stream *stream, static struct intel_context *oa_pin_context(struct i915_perf_stream *stream) { struct i915_gem_engines_iter it; - struct drm_i915_private *i915 = stream->dev_priv; struct i915_gem_context *ctx = stream->ctx; struct intel_context *ce; int err; - err = i915_mutex_lock_interruptible(&i915->drm); - if (err) - return ERR_PTR(err); - for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) { if (ce->engine->class != RENDER_CLASS) continue; @@ -1229,10 +1224,6 @@ static struct intel_context *oa_pin_context(struct i915_perf_stream *stream) } i915_gem_context_unlock_engines(ctx); - mutex_unlock(&i915->drm.struct_mutex); - if (err) - return ERR_PTR(err); - return stream->pinned_ctx; } @@ -1331,32 +1322,22 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream) */ static void oa_put_render_ctx_id(struct i915_perf_stream *stream) { - struct drm_i915_private *dev_priv = stream->dev_priv; struct intel_context *ce; stream->specific_ctx_id = INVALID_CTX_ID; stream->specific_ctx_id_mask = 0; ce = fetch_and_zero(&stream->pinned_ctx); - if (ce) { - mutex_lock(&dev_priv->drm.struct_mutex); + if (ce) intel_context_unpin(ce); - mutex_unlock(&dev_priv->drm.struct_mutex); - } } static void free_oa_buffer(struct i915_perf_stream *stream) { - struct drm_i915_private *i915 = stream->dev_priv; - - mutex_lock(&i915->drm.struct_mutex); - i915_vma_unpin_and_release(&stream->oa_buffer.vma, I915_VMA_RELEASE_MAP); - mutex_unlock(&i915->drm.struct_mutex); - stream->oa_buffer.vaddr = NULL; } @@ -1511,18 +1492,13 @@ static int alloc_oa_buffer(struct i915_perf_stream *stream) if (WARN_ON(stream->oa_buffer.vma)) return -ENODEV; - ret = i915_mutex_lock_interruptible(&dev_priv->drm); - if (ret) - return ret; - BUILD_BUG_ON_NOT_POWER_OF_2(OA_BUFFER_SIZE); BUILD_BUG_ON(OA_BUFFER_SIZE < SZ_128K || OA_BUFFER_SIZE > SZ_16M); bo = i915_gem_object_create_shmem(dev_priv, OA_BUFFER_SIZE); if (IS_ERR(bo)) { DRM_ERROR("Failed to allocate OA buffer\n"); - ret = PTR_ERR(bo); - goto unlock; + return PTR_ERR(bo); } i915_gem_object_set_cache_coherency(bo, I915_CACHE_LLC); @@ -1546,7 +1522,7 @@ static int alloc_oa_buffer(struct i915_perf_stream *stream) i915_ggtt_offset(stream->oa_buffer.vma), stream->oa_buffer.vaddr); - goto unlock; + return 0; err_unpin: __i915_vma_unpin(vma); @@ -1557,8 +1533,6 @@ err_unref: stream->oa_buffer.vaddr = NULL; stream->oa_buffer.vma = NULL; -unlock: - mutex_unlock(&dev_priv->drm.struct_mutex); return ret; } diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index d097f77890ba..fe91a0e47b88 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -32,6 +32,7 @@ #include "i915_drv.h" #include "i915_globals.h" +#include "i915_sw_fence_work.h" #include "i915_trace.h" #include "i915_vma.h" @@ -110,7 +111,8 @@ vma_create(struct drm_i915_gem_object *obj, if (vma == NULL) return ERR_PTR(-ENOMEM); - vma->vm = vm; + mutex_init(&vma->pages_mutex); + vma->vm = i915_vm_get(vm); vma->ops = &vm->vma_ops; vma->obj = obj; vma->resv = obj->base.resv; @@ -261,8 +263,6 @@ vma_lookup(struct drm_i915_gem_object *obj, * Once created, the VMA is kept until either the object is freed, or the * address space is closed. * - * Must be called with struct_mutex held. - * * Returns the vma, or an error pointer. */ struct i915_vma * @@ -273,7 +273,7 @@ i915_vma_instance(struct drm_i915_gem_object *obj, struct i915_vma *vma; GEM_BUG_ON(view && !i915_is_ggtt(vm)); - GEM_BUG_ON(vm->closed); + GEM_BUG_ON(!atomic_read(&vm->open)); spin_lock(&obj->vma.lock); vma = vma_lookup(obj, vm, view); @@ -287,18 +287,63 @@ i915_vma_instance(struct drm_i915_gem_object *obj, return vma; } +struct i915_vma_work { + struct dma_fence_work base; + struct i915_vma *vma; + enum i915_cache_level cache_level; + unsigned int flags; +}; + +static int __vma_bind(struct dma_fence_work *work) +{ + struct i915_vma_work *vw = container_of(work, typeof(*vw), base); + struct i915_vma *vma = vw->vma; + int err; + + err = vma->ops->bind_vma(vma, vw->cache_level, vw->flags); + if (err) + atomic_or(I915_VMA_ERROR, &vma->flags); + + if (vma->obj) + __i915_gem_object_unpin_pages(vma->obj); + + return err; +} + +static const struct dma_fence_work_ops bind_ops = { + .name = "bind", + .work = __vma_bind, +}; + +struct i915_vma_work *i915_vma_work(void) +{ + struct i915_vma_work *vw; + + vw = kzalloc(sizeof(*vw), GFP_KERNEL); + if (!vw) + return NULL; + + dma_fence_work_init(&vw->base, &bind_ops); + vw->base.dma.error = -EAGAIN; /* disable the worker by default */ + + return vw; +} + /** * i915_vma_bind - Sets up PTEs for an VMA in it's corresponding address space. * @vma: VMA to map * @cache_level: mapping cache level * @flags: flags like global or local mapping + * @work: preallocated worker for allocating and binding the PTE * * DMA addresses are taken from the scatter-gather table of this object (or of * this VMA in case of non-default GGTT views) and PTE entries set up. * Note that DMA addresses are also the only part of the SG table we care about. */ -int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level, - u32 flags) +int i915_vma_bind(struct i915_vma *vma, + enum i915_cache_level cache_level, + u32 flags, + struct i915_vma_work *work) { u32 bind_flags; u32 vma_flags; @@ -315,11 +360,8 @@ int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level, if (GEM_DEBUG_WARN_ON(!flags)) return -EINVAL; - bind_flags = 0; - if (flags & PIN_GLOBAL) - bind_flags |= I915_VMA_GLOBAL_BIND; - if (flags & PIN_USER) - bind_flags |= I915_VMA_LOCAL_BIND; + bind_flags = flags; + bind_flags &= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND; vma_flags = atomic_read(&vma->flags); vma_flags &= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND; @@ -333,9 +375,32 @@ int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level, GEM_BUG_ON(!vma->pages); trace_i915_vma_bind(vma, bind_flags); - ret = vma->ops->bind_vma(vma, cache_level, bind_flags); - if (ret) - return ret; + if (work && (bind_flags & ~vma_flags) & vma->vm->bind_async_flags) { + work->vma = vma; + work->cache_level = cache_level; + work->flags = bind_flags | I915_VMA_ALLOC; + + /* + * Note we only want to chain up to the migration fence on + * the pages (not the object itself). As we don't track that, + * yet, we have to use the exclusive fence instead. + * + * Also note that we do not want to track the async vma as + * part of the obj->resv->excl_fence as it only affects + * execution and not content or object's backing store lifetime. + */ + GEM_BUG_ON(i915_active_has_exclusive(&vma->active)); + i915_active_set_exclusive(&vma->active, &work->base.dma); + work->base.dma.error = 0; /* enable the queue_work() */ + + if (vma->obj) + __i915_gem_object_pin_pages(vma->obj); + } else { + GEM_BUG_ON((bind_flags & ~vma_flags) & vma->vm->bind_async_flags); + ret = vma->ops->bind_vma(vma, cache_level, bind_flags); + if (ret) + return ret; + } atomic_or(bind_flags, &vma->flags); return 0; @@ -348,9 +413,7 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma) /* Access through the GTT requires the device to be awake. */ assert_rpm_wakelock_held(&vma->vm->i915->runtime_pm); - - lockdep_assert_held(&vma->vm->i915->drm.struct_mutex); - if (WARN_ON(!i915_vma_is_map_and_fenceable(vma))) { + if (GEM_WARN_ON(!i915_vma_is_map_and_fenceable(vma))) { err = -ENODEV; goto err; } @@ -358,7 +421,7 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma) GEM_BUG_ON(!i915_vma_is_ggtt(vma)); GEM_BUG_ON(!i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND)); - ptr = vma->iomap; + ptr = READ_ONCE(vma->iomap); if (ptr == NULL) { ptr = io_mapping_map_wc(&i915_vm_to_ggtt(vma->vm)->iomap, vma->node.start, @@ -368,7 +431,10 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma) goto err; } - vma->iomap = ptr; + if (unlikely(cmpxchg(&vma->iomap, NULL, ptr))) { + io_mapping_unmap(ptr); + ptr = vma->iomap; + } } __i915_vma_pin(vma); @@ -388,18 +454,12 @@ err: void i915_vma_flush_writes(struct i915_vma *vma) { - if (!i915_vma_has_ggtt_write(vma)) - return; - - intel_gt_flush_ggtt_writes(vma->vm->gt); - - i915_vma_unset_ggtt_write(vma); + if (i915_vma_unset_ggtt_write(vma)) + intel_gt_flush_ggtt_writes(vma->vm->gt); } void i915_vma_unpin_iomap(struct i915_vma *vma) { - lockdep_assert_held(&vma->vm->i915->drm.struct_mutex); - GEM_BUG_ON(vma->iomap == NULL); i915_vma_flush_writes(vma); @@ -435,6 +495,9 @@ bool i915_vma_misplaced(const struct i915_vma *vma, if (!drm_mm_node_allocated(&vma->node)) return false; + if (test_bit(I915_VMA_ERROR_BIT, __i915_vma_flags(vma))) + return true; + if (vma->node.size < size) return true; @@ -535,7 +598,6 @@ static void assert_bind_count(const struct drm_i915_gem_object *obj) static int i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) { - struct drm_i915_private *dev_priv = vma->vm->i915; unsigned long color; u64 start, end; int ret; @@ -561,7 +623,7 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) end = vma->vm->total; if (flags & PIN_MAPPABLE) - end = min_t(u64, end, dev_priv->ggtt.mappable_end); + end = min_t(u64, end, i915_vm_to_ggtt(vma->vm)->mappable_end); if (flags & PIN_ZONE_4G) end = min_t(u64, end, (1ULL << 32) - I915_GTT_PAGE_SIZE); GEM_BUG_ON(!IS_ALIGNED(end, I915_GTT_PAGE_SIZE)); @@ -578,34 +640,20 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) } color = 0; - if (vma->obj) { - ret = i915_gem_object_pin_pages(vma->obj); - if (ret) - return ret; - - if (i915_vm_has_cache_coloring(vma->vm)) - color = vma->obj->cache_level; - } - - GEM_BUG_ON(vma->pages); - - ret = vma->ops->set_pages(vma); - if (ret) - goto err_unpin; + if (vma->obj && i915_vm_has_cache_coloring(vma->vm)) + color = vma->obj->cache_level; if (flags & PIN_OFFSET_FIXED) { u64 offset = flags & PIN_OFFSET_MASK; if (!IS_ALIGNED(offset, alignment) || - range_overflows(offset, size, end)) { - ret = -EINVAL; - goto err_clear; - } + range_overflows(offset, size, end)) + return -EINVAL; ret = i915_gem_gtt_reserve(vma->vm, &vma->node, size, offset, color, flags); if (ret) - goto err_clear; + return ret; } else { /* * We only support huge gtt pages through the 48b PPGTT, @@ -644,7 +692,7 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) size, alignment, color, start, end, flags); if (ret) - goto err_clear; + return ret; GEM_BUG_ON(vma->node.start < start); GEM_BUG_ON(vma->node.start + vma->node.size > end); @@ -652,23 +700,15 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) GEM_BUG_ON(!drm_mm_node_allocated(&vma->node)); GEM_BUG_ON(!i915_gem_valid_gtt_space(vma, color)); - mutex_lock(&vma->vm->mutex); list_add_tail(&vma->vm_link, &vma->vm->bound_list); - mutex_unlock(&vma->vm->mutex); if (vma->obj) { + atomic_inc(&vma->obj->mm.pages_pin_count); atomic_inc(&vma->obj->bind_count); assert_bind_count(vma->obj); } return 0; - -err_clear: - vma->ops->clear_pages(vma); -err_unpin: - if (vma->obj) - i915_gem_object_unpin_pages(vma->obj); - return ret; } static void @@ -677,12 +717,7 @@ i915_vma_remove(struct i915_vma *vma) GEM_BUG_ON(!drm_mm_node_allocated(&vma->node)); GEM_BUG_ON(i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND)); - vma->ops->clear_pages(vma); - - mutex_lock(&vma->vm->mutex); - drm_mm_remove_node(&vma->node); list_del(&vma->vm_link); - mutex_unlock(&vma->vm->mutex); /* * Since the unbound list is global, only move to that list if @@ -701,51 +736,211 @@ i915_vma_remove(struct i915_vma *vma) i915_gem_object_unpin_pages(obj); assert_bind_count(obj); } + + drm_mm_remove_node(&vma->node); } -int __i915_vma_do_pin(struct i915_vma *vma, - u64 size, u64 alignment, u64 flags) +static bool try_qad_pin(struct i915_vma *vma, unsigned int flags) { - const unsigned int bound = atomic_read(&vma->flags); - int ret; + unsigned int bound; + bool pinned = true; - lockdep_assert_held(&vma->vm->i915->drm.struct_mutex); - GEM_BUG_ON((flags & (PIN_GLOBAL | PIN_USER)) == 0); - GEM_BUG_ON((flags & PIN_GLOBAL) && !i915_vma_is_ggtt(vma)); + bound = atomic_read(&vma->flags); + do { + if (unlikely(flags & ~bound)) + return false; - if (WARN_ON(bound & I915_VMA_PIN_OVERFLOW)) { - ret = -EBUSY; - goto err_unpin; + if (unlikely(bound & (I915_VMA_OVERFLOW | I915_VMA_ERROR))) + return false; + + if (!(bound & I915_VMA_PIN_MASK)) + goto unpinned; + + GEM_BUG_ON(((bound + 1) & I915_VMA_PIN_MASK) == 0); + } while (!atomic_try_cmpxchg(&vma->flags, &bound, bound + 1)); + + return true; + +unpinned: + /* + * If pin_count==0, but we are bound, check under the lock to avoid + * racing with a concurrent i915_vma_unbind(). + */ + mutex_lock(&vma->vm->mutex); + do { + if (unlikely(bound & (I915_VMA_OVERFLOW | I915_VMA_ERROR))) { + pinned = false; + break; + } + + if (unlikely(flags & ~bound)) { + pinned = false; + break; + } + } while (!atomic_try_cmpxchg(&vma->flags, &bound, bound + 1)); + mutex_unlock(&vma->vm->mutex); + + return pinned; +} + +static int vma_get_pages(struct i915_vma *vma) +{ + int err = 0; + + if (atomic_add_unless(&vma->pages_count, 1, 0)) + return 0; + + /* Allocations ahoy! */ + if (mutex_lock_interruptible(&vma->pages_mutex)) + return -EINTR; + + if (!atomic_read(&vma->pages_count)) { + if (vma->obj) { + err = i915_gem_object_pin_pages(vma->obj); + if (err) + goto unlock; + } + + err = vma->ops->set_pages(vma); + if (err) + goto unlock; } + atomic_inc(&vma->pages_count); - if ((bound & I915_VMA_BIND_MASK) == 0) { - ret = i915_vma_insert(vma, size, alignment, flags); - if (ret) - goto err_unpin; +unlock: + mutex_unlock(&vma->pages_mutex); + + return err; +} + +static void __vma_put_pages(struct i915_vma *vma, unsigned int count) +{ + /* We allocate under vma_get_pages, so beware the shrinker */ + mutex_lock_nested(&vma->pages_mutex, SINGLE_DEPTH_NESTING); + GEM_BUG_ON(atomic_read(&vma->pages_count) < count); + if (atomic_sub_return(count, &vma->pages_count) == 0) { + vma->ops->clear_pages(vma); + GEM_BUG_ON(vma->pages); + if (vma->obj) + i915_gem_object_unpin_pages(vma->obj); } - GEM_BUG_ON(!drm_mm_node_allocated(&vma->node)); + mutex_unlock(&vma->pages_mutex); +} - ret = i915_vma_bind(vma, vma->obj ? vma->obj->cache_level : 0, flags); - if (ret) - goto err_remove; +static void vma_put_pages(struct i915_vma *vma) +{ + if (atomic_add_unless(&vma->pages_count, -1, 1)) + return; + + __vma_put_pages(vma, 1); +} + +static void vma_unbind_pages(struct i915_vma *vma) +{ + unsigned int count; + + lockdep_assert_held(&vma->vm->mutex); + + /* The upper portion of pages_count is the number of bindings */ + count = atomic_read(&vma->pages_count); + count >>= I915_VMA_PAGES_BIAS; + GEM_BUG_ON(!count); + + __vma_put_pages(vma, count | count << I915_VMA_PAGES_BIAS); +} + +int i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) +{ + struct i915_vma_work *work = NULL; + unsigned int bound; + int err; + + BUILD_BUG_ON(PIN_GLOBAL != I915_VMA_GLOBAL_BIND); + BUILD_BUG_ON(PIN_USER != I915_VMA_LOCAL_BIND); + + GEM_BUG_ON(flags & PIN_UPDATE); + GEM_BUG_ON(!(flags & (PIN_USER | PIN_GLOBAL))); + + /* First try and grab the pin without rebinding the vma */ + if (try_qad_pin(vma, flags & I915_VMA_BIND_MASK)) + return 0; + + err = vma_get_pages(vma); + if (err) + return err; + + if (flags & vma->vm->bind_async_flags) { + work = i915_vma_work(); + if (!work) { + err = -ENOMEM; + goto err_pages; + } + } + + /* No more allocations allowed once we hold vm->mutex */ + err = mutex_lock_interruptible(&vma->vm->mutex); + if (err) + goto err_fence; + + bound = atomic_read(&vma->flags); + if (unlikely(bound & I915_VMA_ERROR)) { + err = -ENOMEM; + goto err_unlock; + } + + if (unlikely(!((bound + 1) & I915_VMA_PIN_MASK))) { + err = -EAGAIN; /* pins are meant to be fairly temporary */ + goto err_unlock; + } + + if (unlikely(!(flags & ~bound & I915_VMA_BIND_MASK))) { + __i915_vma_pin(vma); + goto err_unlock; + } + + err = i915_active_acquire(&vma->active); + if (err) + goto err_unlock; + + if (!(bound & I915_VMA_BIND_MASK)) { + err = i915_vma_insert(vma, size, alignment, flags); + if (err) + goto err_active; + + if (i915_is_ggtt(vma->vm)) + __i915_vma_set_map_and_fenceable(vma); + } - GEM_BUG_ON(!i915_vma_is_bound(vma, I915_VMA_BIND_MASK)); + GEM_BUG_ON(!vma->pages); + err = i915_vma_bind(vma, + vma->obj ? vma->obj->cache_level : 0, + flags, work); + if (err) + goto err_remove; - if ((bound ^ atomic_read(&vma->flags)) & I915_VMA_GLOBAL_BIND) - __i915_vma_set_map_and_fenceable(vma); + /* There should only be at most 2 active bindings (user, global) */ + GEM_BUG_ON(bound + I915_VMA_PAGES_ACTIVE < bound); + atomic_add(I915_VMA_PAGES_ACTIVE, &vma->pages_count); + list_move_tail(&vma->vm_link, &vma->vm->bound_list); + __i915_vma_pin(vma); + GEM_BUG_ON(!i915_vma_is_pinned(vma)); + GEM_BUG_ON(!i915_vma_is_bound(vma, flags)); GEM_BUG_ON(i915_vma_misplaced(vma, size, alignment, flags)); - return 0; err_remove: - if ((bound & I915_VMA_BIND_MASK) == 0) { + if (!i915_vma_is_bound(vma, I915_VMA_BIND_MASK)) i915_vma_remove(vma); - GEM_BUG_ON(vma->pages); - GEM_BUG_ON(atomic_read(&vma->flags) & I915_VMA_BIND_MASK); - } -err_unpin: - __i915_vma_unpin(vma); - return ret; +err_active: + i915_active_release(&vma->active); +err_unlock: + mutex_unlock(&vma->vm->mutex); +err_fence: + if (work) + dma_fence_work_commit(&work->base); +err_pages: + vma_put_pages(vma); + return err; } void i915_vma_close(struct i915_vma *vma) @@ -776,9 +971,6 @@ static void __i915_vma_remove_closed(struct i915_vma *vma) { struct drm_i915_private *i915 = vma->vm->i915; - if (!i915_vma_is_closed(vma)) - return; - spin_lock_irq(&i915->gt.closed_lock); list_del_init(&vma->closed_link); spin_unlock_irq(&i915->gt.closed_lock); @@ -786,40 +978,35 @@ static void __i915_vma_remove_closed(struct i915_vma *vma) void i915_vma_reopen(struct i915_vma *vma) { - __i915_vma_remove_closed(vma); + if (i915_vma_is_closed(vma)) + __i915_vma_remove_closed(vma); } -static void __i915_vma_destroy(struct i915_vma *vma) +void i915_vma_destroy(struct i915_vma *vma) { - GEM_BUG_ON(drm_mm_node_allocated(&vma->node)); - GEM_BUG_ON(vma->fence); + if (drm_mm_node_allocated(&vma->node)) { + mutex_lock(&vma->vm->mutex); + atomic_and(~I915_VMA_PIN_MASK, &vma->flags); + WARN_ON(__i915_vma_unbind(vma)); + mutex_unlock(&vma->vm->mutex); + GEM_BUG_ON(drm_mm_node_allocated(&vma->node)); + } + GEM_BUG_ON(i915_vma_is_active(vma)); if (vma->obj) { struct drm_i915_gem_object *obj = vma->obj; spin_lock(&obj->vma.lock); list_del(&vma->obj_link); - rb_erase(&vma->obj_node, &vma->obj->vma.tree); + rb_erase(&vma->obj_node, &obj->vma.tree); spin_unlock(&obj->vma.lock); } - i915_active_fini(&vma->active); - - i915_vma_free(vma); -} - -void i915_vma_destroy(struct i915_vma *vma) -{ - lockdep_assert_held(&vma->vm->i915->drm.struct_mutex); - - GEM_BUG_ON(i915_vma_is_pinned(vma)); - __i915_vma_remove_closed(vma); + i915_vm_put(vma->vm); - WARN_ON(i915_vma_unbind(vma)); - GEM_BUG_ON(i915_vma_is_active(vma)); - - __i915_vma_destroy(vma); + i915_active_fini(&vma->active); + i915_vma_free(vma); } void i915_vma_parked(struct drm_i915_private *i915) @@ -828,12 +1015,32 @@ void i915_vma_parked(struct drm_i915_private *i915) spin_lock_irq(&i915->gt.closed_lock); list_for_each_entry_safe(vma, next, &i915->gt.closed_vma, closed_link) { - list_del_init(&vma->closed_link); + struct drm_i915_gem_object *obj = vma->obj; + struct i915_address_space *vm = vma->vm; + + /* XXX All to avoid keeping a reference on i915_vma itself */ + + if (!kref_get_unless_zero(&obj->base.refcount)) + continue; + + if (!i915_vm_tryopen(vm)) { + i915_gem_object_put(obj); + obj = NULL; + } + spin_unlock_irq(&i915->gt.closed_lock); - i915_vma_destroy(vma); + if (obj) { + i915_vma_destroy(vma); + i915_gem_object_put(obj); + } + i915_vm_close(vm); + + /* Restart after dropping lock */ spin_lock_irq(&i915->gt.closed_lock); + next = list_first_entry(&i915->gt.closed_vma, + typeof(*next), closed_link); } spin_unlock_irq(&i915->gt.closed_lock); } @@ -873,6 +1080,20 @@ void i915_vma_revoke_mmap(struct i915_vma *vma) list_del(&vma->obj->userfault_link); } +int __i915_vma_move_to_active(struct i915_vma *vma, struct i915_request *rq) +{ + int err; + + GEM_BUG_ON(!i915_vma_is_pinned(vma)); + + /* Wait for the vma to be bound before we start! */ + err = i915_request_await_active(rq, &vma->active); + if (err) + return err; + + return i915_active_add_request(&vma->active, rq); +} + int i915_vma_move_to_active(struct i915_vma *vma, struct i915_request *rq, unsigned int flags) @@ -880,19 +1101,9 @@ int i915_vma_move_to_active(struct i915_vma *vma, struct drm_i915_gem_object *obj = vma->obj; int err; - assert_vma_held(vma); assert_object_held(obj); - GEM_BUG_ON(!drm_mm_node_allocated(&vma->node)); - /* - * Add a reference if we're newly entering the active list. - * The order in which we add operations to the retirement queue is - * vital here: mark_active adds to the start of the callback list, - * such that subsequent callbacks are called first. Therefore we - * add the active reference first and queue for it to be dropped - * *last*. - */ - err = i915_active_add_request(&vma->active, rq); + err = __i915_vma_move_to_active(vma, rq); if (unlikely(err)) return err; @@ -918,38 +1129,23 @@ int i915_vma_move_to_active(struct i915_vma *vma, return 0; } -int i915_vma_unbind(struct i915_vma *vma) +int __i915_vma_unbind(struct i915_vma *vma) { int ret; - lockdep_assert_held(&vma->vm->i915->drm.struct_mutex); + lockdep_assert_held(&vma->vm->mutex); /* * First wait upon any activity as retiring the request may * have side-effects such as unpinning or even unbinding this vma. + * + * XXX Actually waiting under the vm->mutex is a hinderance and + * should be pipelined wherever possible. In cases where that is + * unavoidable, we should lift the wait to before the mutex. */ - might_sleep(); - if (i915_vma_is_active(vma)) { - /* - * When a closed VMA is retired, it is unbound - eek. - * In order to prevent it from being recursively closed, - * take a pin on the vma so that the second unbind is - * aborted. - * - * Even more scary is that the retire callback may free - * the object (last active vma). To prevent the explosion - * we defer the actual object free to a worker that can - * only proceed once it acquires the struct_mutex (which - * we currently hold, therefore it cannot free this object - * before we are finished). - */ - __i915_vma_pin(vma); - ret = i915_active_wait(&vma->active); - __i915_vma_unpin(vma); - if (ret) - return ret; - } - GEM_BUG_ON(i915_vma_is_active(vma)); + ret = i915_vma_sync(vma); + if (ret) + return ret; if (i915_vma_is_pinned(vma)) { vma_print_allocator(vma, "is pinned"); @@ -970,16 +1166,12 @@ int i915_vma_unbind(struct i915_vma *vma) GEM_BUG_ON(i915_vma_has_ggtt_write(vma)); /* release the fence reg _after_ flushing */ - mutex_lock(&vma->vm->mutex); ret = i915_vma_revoke_fence(vma); - mutex_unlock(&vma->vm->mutex); if (ret) return ret; /* Force a pagefault for domain tracking on next user access */ - mutex_lock(&vma->vm->mutex); i915_vma_revoke_mmap(vma); - mutex_unlock(&vma->vm->mutex); __i915_vma_iounmap(vma); clear_bit(I915_VMA_CAN_FENCE_BIT, __i915_vma_flags(vma)); @@ -987,17 +1179,33 @@ int i915_vma_unbind(struct i915_vma *vma) GEM_BUG_ON(vma->fence); GEM_BUG_ON(i915_vma_has_userfault(vma)); - if (likely(!vma->vm->closed)) { + if (likely(atomic_read(&vma->vm->open))) { trace_i915_vma_unbind(vma); vma->ops->unbind_vma(vma); } - atomic_and(~I915_VMA_BIND_MASK, &vma->flags); + atomic_and(~(I915_VMA_BIND_MASK | I915_VMA_ERROR), &vma->flags); + vma_unbind_pages(vma); i915_vma_remove(vma); return 0; } +int i915_vma_unbind(struct i915_vma *vma) +{ + struct i915_address_space *vm = vma->vm; + int err; + + err = mutex_lock_interruptible(&vm->mutex); + if (err) + return err; + + err = __i915_vma_unbind(vma); + mutex_unlock(&vm->mutex); + + return err; +} + struct i915_vma *i915_vma_make_unshrinkable(struct i915_vma *vma) { i915_gem_object_make_unshrinkable(vma->obj); diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h index e49b199f7de7..858908e3d1cc 100644 --- a/drivers/gpu/drm/i915/i915_vma.h +++ b/drivers/gpu/drm/i915/i915_vma.h @@ -96,25 +96,28 @@ struct i915_vma { * exclusive cachelines of a single page, so a maximum of 64 possible * users. */ -#define I915_VMA_PIN_MASK 0xff -#define I915_VMA_PIN_OVERFLOW_BIT 8 -#define I915_VMA_PIN_OVERFLOW ((int)BIT(I915_VMA_PIN_OVERFLOW_BIT)) +#define I915_VMA_PIN_MASK 0x3ff +#define I915_VMA_OVERFLOW 0x200 /** Flags and address space this VMA is bound to */ -#define I915_VMA_GLOBAL_BIND_BIT 9 -#define I915_VMA_LOCAL_BIND_BIT 10 +#define I915_VMA_GLOBAL_BIND_BIT 10 +#define I915_VMA_LOCAL_BIND_BIT 11 #define I915_VMA_GLOBAL_BIND ((int)BIT(I915_VMA_GLOBAL_BIND_BIT)) #define I915_VMA_LOCAL_BIND ((int)BIT(I915_VMA_LOCAL_BIND_BIT)) -#define I915_VMA_BIND_MASK (I915_VMA_GLOBAL_BIND | \ - I915_VMA_LOCAL_BIND | \ - I915_VMA_PIN_OVERFLOW) +#define I915_VMA_BIND_MASK (I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND) -#define I915_VMA_GGTT_BIT 11 -#define I915_VMA_CAN_FENCE_BIT 12 -#define I915_VMA_USERFAULT_BIT 13 -#define I915_VMA_GGTT_WRITE_BIT 14 +#define I915_VMA_ALLOC_BIT 12 +#define I915_VMA_ALLOC ((int)BIT(I915_VMA_ALLOC_BIT)) + +#define I915_VMA_ERROR_BIT 13 +#define I915_VMA_ERROR ((int)BIT(I915_VMA_ERROR_BIT)) + +#define I915_VMA_GGTT_BIT 14 +#define I915_VMA_CAN_FENCE_BIT 15 +#define I915_VMA_USERFAULT_BIT 16 +#define I915_VMA_GGTT_WRITE_BIT 17 #define I915_VMA_GGTT ((int)BIT(I915_VMA_GGTT_BIT)) #define I915_VMA_CAN_FENCE ((int)BIT(I915_VMA_CAN_FENCE_BIT)) @@ -123,6 +126,11 @@ struct i915_vma { struct i915_active active; +#define I915_VMA_PAGES_BIAS 24 +#define I915_VMA_PAGES_ACTIVE (BIT(24) | 1) + atomic_t pages_count; /* number of active binds to the pages */ + struct mutex pages_mutex; /* protect acquire/release of backing pages */ + /** * Support different GGTT views into the same object. * This means there can be multiple VMA mappings per object and per VM. @@ -169,6 +177,8 @@ static inline bool i915_vma_is_active(const struct i915_vma *vma) return !i915_active_is_idle(&vma->active); } +int __must_check __i915_vma_move_to_active(struct i915_vma *vma, + struct i915_request *rq); int __must_check i915_vma_move_to_active(struct i915_vma *vma, struct i915_request *rq, unsigned int flags); @@ -307,13 +317,18 @@ i915_vma_compare(struct i915_vma *vma, return memcmp(&vma->ggtt_view.partial, &view->partial, view->type); } -int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level, - u32 flags); +struct i915_vma_work *i915_vma_work(void); +int i915_vma_bind(struct i915_vma *vma, + enum i915_cache_level cache_level, + u32 flags, + struct i915_vma_work *work); + bool i915_gem_valid_gtt_space(struct i915_vma *vma, unsigned long color); bool i915_vma_misplaced(const struct i915_vma *vma, u64 size, u64 alignment, u64 flags); void __i915_vma_set_map_and_fenceable(struct i915_vma *vma); void i915_vma_revoke_mmap(struct i915_vma *vma); +int __i915_vma_unbind(struct i915_vma *vma); int __must_check i915_vma_unbind(struct i915_vma *vma); void i915_vma_unlink_ctx(struct i915_vma *vma); void i915_vma_close(struct i915_vma *vma); @@ -332,26 +347,8 @@ static inline void i915_vma_unlock(struct i915_vma *vma) dma_resv_unlock(vma->resv); } -int __i915_vma_do_pin(struct i915_vma *vma, - u64 size, u64 alignment, u64 flags); -static inline int __must_check -i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) -{ - BUILD_BUG_ON(PIN_MBZ != I915_VMA_PIN_OVERFLOW); - BUILD_BUG_ON(PIN_GLOBAL != I915_VMA_GLOBAL_BIND); - BUILD_BUG_ON(PIN_USER != I915_VMA_LOCAL_BIND); - - /* Pin early to prevent the shrinker/eviction logic from destroying - * our vma as we insert and bind. - */ - if (likely(((atomic_inc_return(&vma->flags) ^ flags) & I915_VMA_BIND_MASK) == 0)) { - GEM_BUG_ON(!drm_mm_node_allocated(&vma->node)); - GEM_BUG_ON(i915_vma_misplaced(vma, size, alignment, flags)); - return 0; - } - - return __i915_vma_do_pin(vma, size, alignment, flags); -} +int __must_check +i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags); static inline int i915_vma_pin_count(const struct i915_vma *vma) { @@ -366,17 +363,17 @@ static inline bool i915_vma_is_pinned(const struct i915_vma *vma) static inline void __i915_vma_pin(struct i915_vma *vma) { atomic_inc(&vma->flags); - GEM_BUG_ON(atomic_read(&vma->flags) & I915_VMA_PIN_OVERFLOW); + GEM_BUG_ON(!i915_vma_is_pinned(vma)); } static inline void __i915_vma_unpin(struct i915_vma *vma) { + GEM_BUG_ON(!i915_vma_is_pinned(vma)); atomic_dec(&vma->flags); } static inline void i915_vma_unpin(struct i915_vma *vma) { - GEM_BUG_ON(!i915_vma_is_pinned(vma)); GEM_BUG_ON(!drm_mm_node_allocated(&vma->node)); __i915_vma_unpin(vma); } @@ -402,8 +399,6 @@ static inline bool i915_node_color_differs(const struct drm_mm_node *node, * the caller must call i915_vma_unpin_iomap to relinquish the pinning * after the iomapping is no longer required. * - * Callers must hold the struct_mutex. - * * Returns a valid iomapped pointer or ERR_PTR. */ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma); @@ -415,8 +410,8 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma); * * Unpins the previously iomapped VMA from i915_vma_pin_iomap(). * - * Callers must hold the struct_mutex. This function is only valid to be - * called on a VMA previously iomapped by the caller with i915_vma_pin_iomap(). + * This function is only valid to be called on a VMA previously + * iomapped by the caller with i915_vma_pin_iomap(). */ void i915_vma_unpin_iomap(struct i915_vma *vma); @@ -444,6 +439,8 @@ static inline struct page *i915_vma_first_page(struct i915_vma *vma) int __must_check i915_vma_pin_fence(struct i915_vma *vma); int __must_check i915_vma_revoke_fence(struct i915_vma *vma); +int __i915_vma_pin_fence(struct i915_vma *vma); + static inline void __i915_vma_unpin_fence(struct i915_vma *vma) { GEM_BUG_ON(atomic_read(&vma->fence->pin_count) <= 0); @@ -461,7 +458,6 @@ static inline void __i915_vma_unpin_fence(struct i915_vma *vma) static inline void i915_vma_unpin_fence(struct i915_vma *vma) { - /* lockdep_assert_held(&vma->vm->i915->drm.struct_mutex); */ if (vma->fence) __i915_vma_unpin_fence(vma); } @@ -490,4 +486,10 @@ struct i915_vma *i915_vma_make_unshrinkable(struct i915_vma *vma); void i915_vma_make_shrinkable(struct i915_vma *vma); void i915_vma_make_purgeable(struct i915_vma *vma); +static inline int i915_vma_sync(struct i915_vma *vma) +{ + /* Wait for the asynchronous bindings and pending GPU reads */ + return i915_active_wait(&vma->active); +} + #endif diff --git a/drivers/gpu/drm/i915/selftests/i915_gem.c b/drivers/gpu/drm/i915/selftests/i915_gem.c index 37593831b539..0346c3e5b6b6 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem.c @@ -119,10 +119,8 @@ static void pm_resume(struct drm_i915_private *i915) intel_gt_sanitize(&i915->gt, false); i915_gem_sanitize(i915); - mutex_lock(&i915->drm.struct_mutex); i915_gem_restore_gtt_mappings(i915); i915_gem_restore_fences(i915); - mutex_unlock(&i915->drm.struct_mutex); i915_gem_resume(i915); } diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c index 2905fb21d866..75a4695b82bb 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c @@ -106,14 +106,11 @@ static int populate_ggtt(struct drm_i915_private *i915, static void unpin_ggtt(struct drm_i915_private *i915) { - struct i915_ggtt *ggtt = &i915->ggtt; struct i915_vma *vma; - mutex_lock(&ggtt->vm.mutex); list_for_each_entry(vma, &i915->ggtt.vm.bound_list, vm_link) if (vma->obj->mm.quirked) i915_vma_unpin(vma); - mutex_unlock(&ggtt->vm.mutex); } static void cleanup_objects(struct drm_i915_private *i915, @@ -127,11 +124,7 @@ static void cleanup_objects(struct drm_i915_private *i915, i915_gem_object_put(obj); } - mutex_unlock(&i915->drm.struct_mutex); - i915_gem_drain_freed_objects(i915); - - mutex_lock(&i915->drm.struct_mutex); } static int igt_evict_something(void *arg) @@ -148,10 +141,12 @@ static int igt_evict_something(void *arg) goto cleanup; /* Everything is pinned, nothing should happen */ + mutex_lock(&ggtt->vm.mutex); err = i915_gem_evict_something(&ggtt->vm, I915_GTT_PAGE_SIZE, 0, 0, 0, U64_MAX, 0); + mutex_unlock(&ggtt->vm.mutex); if (err != -ENOSPC) { pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n", err); @@ -161,10 +156,12 @@ static int igt_evict_something(void *arg) unpin_ggtt(i915); /* Everything is unpinned, we should be able to evict something */ + mutex_lock(&ggtt->vm.mutex); err = i915_gem_evict_something(&ggtt->vm, I915_GTT_PAGE_SIZE, 0, 0, 0, U64_MAX, 0); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n", err); @@ -230,7 +227,9 @@ static int igt_evict_for_vma(void *arg) goto cleanup; /* Everything is pinned, nothing should happen */ + mutex_lock(&ggtt->vm.mutex); err = i915_gem_evict_for_node(&ggtt->vm, &target, 0); + mutex_unlock(&ggtt->vm.mutex); if (err != -ENOSPC) { pr_err("i915_gem_evict_for_node on a full GGTT returned err=%d\n", err); @@ -240,7 +239,9 @@ static int igt_evict_for_vma(void *arg) unpin_ggtt(i915); /* Everything is unpinned, we should be able to evict the node */ + mutex_lock(&ggtt->vm.mutex); err = i915_gem_evict_for_node(&ggtt->vm, &target, 0); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("i915_gem_evict_for_node returned err=%d\n", err); @@ -319,7 +320,9 @@ static int igt_evict_for_cache_color(void *arg) i915_vma_unpin(vma); /* Remove just the second vma */ + mutex_lock(&ggtt->vm.mutex); err = i915_gem_evict_for_node(&ggtt->vm, &target, 0); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("[0]i915_gem_evict_for_node returned err=%d\n", err); goto cleanup; @@ -330,7 +333,9 @@ static int igt_evict_for_cache_color(void *arg) */ target.color = I915_CACHE_L3_LLC; + mutex_lock(&ggtt->vm.mutex); err = i915_gem_evict_for_node(&ggtt->vm, &target, 0); + mutex_unlock(&ggtt->vm.mutex); if (!err) { pr_err("[1]i915_gem_evict_for_node returned err=%d\n", err); err = -EINVAL; @@ -360,7 +365,9 @@ static int igt_evict_vm(void *arg) goto cleanup; /* Everything is pinned, nothing should happen */ + mutex_lock(&ggtt->vm.mutex); err = i915_gem_evict_vm(&ggtt->vm); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("i915_gem_evict_vm on a full GGTT returned err=%d]\n", err); @@ -369,7 +376,9 @@ static int igt_evict_vm(void *arg) unpin_ggtt(i915); + mutex_lock(&ggtt->vm.mutex); err = i915_gem_evict_vm(&ggtt->vm); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("i915_gem_evict_vm on a full GGTT returned err=%d]\n", err); @@ -410,11 +419,11 @@ static int igt_evict_contexts(void *arg) if (!HAS_FULL_PPGTT(i915)) return 0; - mutex_lock(&i915->drm.struct_mutex); wakeref = intel_runtime_pm_get(&i915->runtime_pm); /* Reserve a block so that we know we have enough to fit a few rq */ memset(&hole, 0, sizeof(hole)); + mutex_lock(&i915->ggtt.vm.mutex); err = i915_gem_gtt_insert(&i915->ggtt.vm, &hole, PRETEND_GGTT_SIZE, 0, I915_COLOR_UNEVICTABLE, 0, i915->ggtt.vm.total, @@ -427,7 +436,9 @@ static int igt_evict_contexts(void *arg) do { struct reserved *r; + mutex_unlock(&i915->ggtt.vm.mutex); r = kcalloc(1, sizeof(*r), GFP_KERNEL); + mutex_lock(&i915->ggtt.vm.mutex); if (!r) { err = -ENOMEM; goto out_locked; @@ -447,7 +458,7 @@ static int igt_evict_contexts(void *arg) count++; } while (1); drm_mm_remove_node(&hole); - mutex_unlock(&i915->drm.struct_mutex); + mutex_unlock(&i915->ggtt.vm.mutex); pr_info("Filled GGTT with %lu 1MiB nodes\n", count); /* Overfill the GGTT with context objects and so try to evict one. */ @@ -510,7 +521,7 @@ static int igt_evict_contexts(void *arg) break; } - mutex_lock(&i915->drm.struct_mutex); + mutex_lock(&i915->ggtt.vm.mutex); out_locked: if (igt_flush_test(i915, I915_WAIT_LOCKED)) err = -EIO; @@ -524,8 +535,8 @@ out_locked: } if (drm_mm_node_allocated(&hole)) drm_mm_remove_node(&hole); + mutex_unlock(&i915->ggtt.vm.mutex); intel_runtime_pm_put(&i915->runtime_pm, wakeref); - mutex_unlock(&i915->drm.struct_mutex); return err; } @@ -547,12 +558,9 @@ int i915_gem_evict_mock_selftests(void) if (!i915) return -ENOMEM; - mutex_lock(&i915->drm.struct_mutex); with_intel_runtime_pm(&i915->runtime_pm, wakeref) err = i915_subtests(tests, i915); - mutex_unlock(&i915->drm.struct_mutex); - drm_dev_put(&i915->drm); return err; } diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c index 0945d6e978a2..02749bbfd0cf 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c @@ -38,16 +38,7 @@ static void cleanup_freed_objects(struct drm_i915_private *i915) { - /* - * As we may hold onto the struct_mutex for inordinate lengths of - * time, the NMI khungtaskd detector may fire for the free objects - * worker. - */ - mutex_unlock(&i915->drm.struct_mutex); - i915_gem_drain_freed_objects(i915); - - mutex_lock(&i915->drm.struct_mutex); } static void fake_free_pages(struct drm_i915_gem_object *obj, @@ -880,6 +871,15 @@ static int __shrink_hole(struct drm_i915_private *i915, i915_vma_unpin(vma); addr += size; + /* + * Since we are injecting allocation faults at random intervals, + * wait for this allocation to complete before we change the + * faultinjection. + */ + err = i915_vma_sync(vma); + if (err) + break; + if (igt_timeout(end_time, "%s timed out at ofset %llx [%llx - %llx]\n", __func__, addr, hole_start, hole_end)) { @@ -1013,21 +1013,19 @@ static int exercise_ppgtt(struct drm_i915_private *dev_priv, if (IS_ERR(file)) return PTR_ERR(file); - mutex_lock(&dev_priv->drm.struct_mutex); ppgtt = i915_ppgtt_create(dev_priv); if (IS_ERR(ppgtt)) { err = PTR_ERR(ppgtt); - goto out_unlock; + goto out_free; } GEM_BUG_ON(offset_in_page(ppgtt->vm.total)); - GEM_BUG_ON(ppgtt->vm.closed); + GEM_BUG_ON(!atomic_read(&ppgtt->vm.open)); err = func(dev_priv, &ppgtt->vm, 0, ppgtt->vm.total, end_time); i915_vm_put(&ppgtt->vm); -out_unlock: - mutex_unlock(&dev_priv->drm.struct_mutex); +out_free: mock_file_free(dev_priv, file); return err; } @@ -1090,7 +1088,6 @@ static int exercise_ggtt(struct drm_i915_private *i915, IGT_TIMEOUT(end_time); int err = 0; - mutex_lock(&i915->drm.struct_mutex); restart: list_sort(NULL, &ggtt->vm.mm.hole_stack, sort_holes); drm_mm_for_each_hole(node, &ggtt->vm.mm, hole_start, hole_end) { @@ -1111,7 +1108,6 @@ restart: last = hole_end; goto restart; } - mutex_unlock(&i915->drm.struct_mutex); return err; } @@ -1153,13 +1149,9 @@ static int igt_ggtt_page(void *arg) unsigned int *order, n; int err; - mutex_lock(&i915->drm.struct_mutex); - obj = i915_gem_object_create_internal(i915, PAGE_SIZE); - if (IS_ERR(obj)) { - err = PTR_ERR(obj); - goto out_unlock; - } + if (IS_ERR(obj)) + return PTR_ERR(obj); err = i915_gem_object_pin_pages(obj); if (err) @@ -1227,8 +1219,6 @@ out_unpin: i915_gem_object_unpin_pages(obj); out_free: i915_gem_object_put(obj); -out_unlock: - mutex_unlock(&i915->drm.struct_mutex); return err; } @@ -1239,6 +1229,9 @@ static void track_vma_bind(struct i915_vma *vma) atomic_inc(&obj->bind_count); /* track for eviction later */ __i915_gem_object_pin_pages(obj); + GEM_BUG_ON(vma->pages); + atomic_set(&vma->pages_count, I915_VMA_PAGES_ACTIVE); + __i915_gem_object_pin_pages(obj); vma->pages = obj->mm.pages; mutex_lock(&vma->vm->mutex); @@ -1336,11 +1329,13 @@ static int igt_gtt_reserve(void *arg) goto out; } + mutex_lock(&ggtt->vm.mutex); err = i915_gem_gtt_reserve(&ggtt->vm, &vma->node, obj->base.size, total, obj->cache_level, 0); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("i915_gem_gtt_reserve (pass 1) failed at %llu/%llu with err=%d\n", total, ggtt->vm.total, err); @@ -1386,11 +1381,13 @@ static int igt_gtt_reserve(void *arg) goto out; } + mutex_lock(&ggtt->vm.mutex); err = i915_gem_gtt_reserve(&ggtt->vm, &vma->node, obj->base.size, total, obj->cache_level, 0); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("i915_gem_gtt_reserve (pass 2) failed at %llu/%llu with err=%d\n", total, ggtt->vm.total, err); @@ -1431,11 +1428,13 @@ static int igt_gtt_reserve(void *arg) 2 * I915_GTT_PAGE_SIZE, I915_GTT_MIN_ALIGNMENT); + mutex_lock(&ggtt->vm.mutex); err = i915_gem_gtt_reserve(&ggtt->vm, &vma->node, obj->base.size, offset, obj->cache_level, 0); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("i915_gem_gtt_reserve (pass 3) failed at %llu/%llu with err=%d\n", total, ggtt->vm.total, err); @@ -1504,11 +1503,13 @@ static int igt_gtt_insert(void *arg) /* Check a couple of obviously invalid requests */ for (ii = invalid_insert; ii->size; ii++) { + mutex_lock(&ggtt->vm.mutex); err = i915_gem_gtt_insert(&ggtt->vm, &tmp, ii->size, ii->alignment, I915_COLOR_UNEVICTABLE, ii->start, ii->end, 0); + mutex_unlock(&ggtt->vm.mutex); if (err != -ENOSPC) { pr_err("Invalid i915_gem_gtt_insert(.size=%llx, .alignment=%llx, .start=%llx, .end=%llx) succeeded (err=%d)\n", ii->size, ii->alignment, ii->start, ii->end, @@ -1544,10 +1545,12 @@ static int igt_gtt_insert(void *arg) goto out; } + mutex_lock(&ggtt->vm.mutex); err = i915_gem_gtt_insert(&ggtt->vm, &vma->node, obj->base.size, 0, obj->cache_level, 0, ggtt->vm.total, 0); + mutex_unlock(&ggtt->vm.mutex); if (err == -ENOSPC) { /* maxed out the GGTT space */ i915_gem_object_put(obj); @@ -1602,10 +1605,12 @@ static int igt_gtt_insert(void *arg) goto out; } + mutex_lock(&ggtt->vm.mutex); err = i915_gem_gtt_insert(&ggtt->vm, &vma->node, obj->base.size, 0, obj->cache_level, 0, ggtt->vm.total, 0); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("i915_gem_gtt_insert (pass 2) failed at %llu/%llu with err=%d\n", total, ggtt->vm.total, err); @@ -1649,10 +1654,12 @@ static int igt_gtt_insert(void *arg) goto out; } + mutex_lock(&ggtt->vm.mutex); err = i915_gem_gtt_insert(&ggtt->vm, &vma->node, obj->base.size, 0, obj->cache_level, 0, ggtt->vm.total, 0); + mutex_unlock(&ggtt->vm.mutex); if (err) { pr_err("i915_gem_gtt_insert (pass 3) failed at %llu/%llu with err=%d\n", total, ggtt->vm.total, err); @@ -1696,8 +1703,9 @@ int i915_gem_gtt_mock_selftests(void) } mock_init_ggtt(i915, ggtt); - mutex_lock(&i915->drm.struct_mutex); err = i915_subtests(tests, ggtt); + + mutex_lock(&i915->drm.struct_mutex); mock_device_flush(i915); mutex_unlock(&i915->drm.struct_mutex); diff --git a/drivers/gpu/drm/i915/selftests/i915_request.c b/drivers/gpu/drm/i915/selftests/i915_request.c index 57cd4180d06c..eb175da48547 100644 --- a/drivers/gpu/drm/i915/selftests/i915_request.c +++ b/drivers/gpu/drm/i915/selftests/i915_request.c @@ -647,8 +647,15 @@ static struct i915_vma *empty_batch(struct drm_i915_private *i915) if (err) goto err; + /* Force the wait wait now to avoid including it in the benchmark */ + err = i915_vma_sync(vma); + if (err) + goto err_pin; + return vma; +err_pin: + i915_vma_unpin(vma); err: i915_gem_object_put(obj); return ERR_PTR(err); diff --git a/drivers/gpu/drm/i915/selftests/i915_vma.c b/drivers/gpu/drm/i915/selftests/i915_vma.c index 97752deecccb..0e4f66312b39 100644 --- a/drivers/gpu/drm/i915/selftests/i915_vma.c +++ b/drivers/gpu/drm/i915/selftests/i915_vma.c @@ -831,8 +831,9 @@ int i915_vma_mock_selftests(void) } mock_init_ggtt(i915, ggtt); - mutex_lock(&i915->drm.struct_mutex); err = i915_subtests(tests, ggtt); + + mutex_lock(&i915->drm.struct_mutex); mock_device_flush(i915); mutex_unlock(&i915->drm.struct_mutex); @@ -879,8 +880,6 @@ static int igt_vma_remapped_gtt(void *arg) if (IS_ERR(obj)) return PTR_ERR(obj); - mutex_lock(&i915->drm.struct_mutex); - wakeref = intel_runtime_pm_get(&i915->runtime_pm); for (t = types; *t; t++) { @@ -976,7 +975,6 @@ static int igt_vma_remapped_gtt(void *arg) out: intel_runtime_pm_put(&i915->runtime_pm, wakeref); - mutex_unlock(&i915->drm.struct_mutex); i915_gem_object_put(obj); return err; |