From a01cb37affb7ac698ed260c0e31d02af8df6b785 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 16 Jan 2017 15:21:30 +0000 Subject: [PATCH] drm/i915: Remove i915_vma_create from VMA API With the introduce of i915_vma_instance() for obtaining the VMA singleton for a (obj, vm, view) tuple, we can remove the i915_vma_create() in favour of a single entry point. We do incur a lookup onto an empty tree, but the i915_vma_create() were being called infrequently and during initialisation, so the small overhead is negligible. v2: Drop the i915_ prefix from the now static vma_create() function Signed-off-by: Chris Wilson Reviewed-by: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/20170116152131.18089-4-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_gem_context.c | 2 +- drivers/gpu/drm/i915/i915_gem_render_state.c | 2 +- drivers/gpu/drm/i915/i915_guc_submission.c | 2 +- drivers/gpu/drm/i915/i915_vma.c | 35 +++----------------- drivers/gpu/drm/i915/i915_vma.h | 5 --- drivers/gpu/drm/i915/intel_engine_cs.c | 2 +- drivers/gpu/drm/i915/intel_lrc.c | 4 +-- drivers/gpu/drm/i915/intel_ringbuffer.c | 6 ++-- 8 files changed, 13 insertions(+), 45 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index 0a4728fdecdc..17f90c618208 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -269,7 +269,7 @@ __create_hw_context(struct drm_i915_private *dev_priv, goto err_out; } - vma = i915_vma_create(obj, &dev_priv->ggtt.base, NULL); + vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL); if (IS_ERR(vma)) { i915_gem_object_put(obj); ret = PTR_ERR(vma); diff --git a/drivers/gpu/drm/i915/i915_gem_render_state.c b/drivers/gpu/drm/i915/i915_gem_render_state.c index 63ae7e813335..b42c81b42487 100644 --- a/drivers/gpu/drm/i915/i915_gem_render_state.c +++ b/drivers/gpu/drm/i915/i915_gem_render_state.c @@ -200,7 +200,7 @@ int i915_gem_render_state_init(struct intel_engine_cs *engine) goto err_free; } - so->vma = i915_vma_create(obj, &engine->i915->ggtt.base, NULL); + so->vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL); if (IS_ERR(so->vma)) { ret = PTR_ERR(so->vma); goto err_obj; diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c index c3277858cd8c..8ced9e26f075 100644 --- a/drivers/gpu/drm/i915/i915_guc_submission.c +++ b/drivers/gpu/drm/i915/i915_guc_submission.c @@ -566,7 +566,7 @@ struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size) if (IS_ERR(obj)) return ERR_CAST(obj); - vma = i915_vma_create(obj, &dev_priv->ggtt.base, NULL); + vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL); if (IS_ERR(vma)) goto err; diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index b4d7b51266d2..cb415bfe22d7 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -69,16 +69,14 @@ i915_vma_retire(struct i915_gem_active *active, } static struct i915_vma * -__i915_vma_create(struct drm_i915_gem_object *obj, - struct i915_address_space *vm, - const struct i915_ggtt_view *view) +vma_create(struct drm_i915_gem_object *obj, + struct i915_address_space *vm, + const struct i915_ggtt_view *view) { struct i915_vma *vma; struct rb_node *rb, **p; int i; - GEM_BUG_ON(vm->closed); - vma = kmem_cache_zalloc(to_i915(obj->base.dev)->vmas, GFP_KERNEL); if (vma == NULL) return ERR_PTR(-ENOMEM); @@ -186,31 +184,6 @@ i915_vma_lookup(struct drm_i915_gem_object *obj, return NULL; } -/** - * i915_vma_create - creates a VMA - * @obj: parent &struct drm_i915_gem_object to be mapped - * @vm: address space in which the mapping is located - * @view: additional mapping requirements - * - * i915_vma_create() allocates a new VMA of the @obj in the @vm with - * @view characteristics. - * - * Must be called with struct_mutex held. - * - * Returns the vma if found, or an error pointer. - */ -struct i915_vma * -i915_vma_create(struct drm_i915_gem_object *obj, - struct i915_address_space *vm, - const struct i915_ggtt_view *view) -{ - lockdep_assert_held(&obj->base.dev->struct_mutex); - GEM_BUG_ON(view && !i915_is_ggtt(vm)); - GEM_BUG_ON(i915_vma_lookup(obj, vm, view)); - - return __i915_vma_create(obj, vm, view); -} - /** * i915_vma_instance - return the singleton instance of the VMA * @obj: parent &struct drm_i915_gem_object to be mapped @@ -239,7 +212,7 @@ i915_vma_instance(struct drm_i915_gem_object *obj, vma = i915_vma_lookup(obj, vm, view); if (!vma) - vma = i915_vma_create(obj, vm, view); + vma = vma_create(obj, vm, view); GEM_BUG_ON(!IS_ERR(vma) && i915_vma_is_closed(vma)); GEM_BUG_ON(!IS_ERR(vma) && i915_vma_compare(vma, vm, view)); diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h index b3c81190b4a0..82a56193985c 100644 --- a/drivers/gpu/drm/i915/i915_vma.h +++ b/drivers/gpu/drm/i915/i915_vma.h @@ -111,11 +111,6 @@ struct i915_vma { struct drm_i915_gem_exec_object2 *exec_entry; }; -struct i915_vma * -i915_vma_create(struct drm_i915_gem_object *obj, - struct i915_address_space *vm, - const struct i915_ggtt_view *view); - struct i915_vma * i915_vma_lookup(struct drm_i915_gem_object *obj, struct i915_address_space *vm, diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 97bbbc3d6aa8..371acf109e34 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -264,7 +264,7 @@ int intel_engine_create_scratch(struct intel_engine_cs *engine, int size) return PTR_ERR(obj); } - vma = i915_vma_create(obj, &engine->i915->ggtt.base, NULL); + vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL); if (IS_ERR(vma)) { ret = PTR_ERR(vma); goto err_unref; diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 8f8dcd9a9524..432ee495dec2 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1225,7 +1225,7 @@ static int lrc_setup_wa_ctx_obj(struct intel_engine_cs *engine, u32 size) if (IS_ERR(obj)) return PTR_ERR(obj); - vma = i915_vma_create(obj, &engine->i915->ggtt.base, NULL); + vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL); if (IS_ERR(vma)) { err = PTR_ERR(vma); goto err; @@ -2198,7 +2198,7 @@ static int execlists_context_deferred_alloc(struct i915_gem_context *ctx, return PTR_ERR(ctx_obj); } - vma = i915_vma_create(ctx_obj, &ctx->i915->ggtt.base, NULL); + vma = i915_vma_instance(ctx_obj, &ctx->i915->ggtt.base, NULL); if (IS_ERR(vma)) { ret = PTR_ERR(vma); goto error_deref_obj; diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 49fa8006c6a2..69035e4f9b3b 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1738,7 +1738,7 @@ static int init_status_page(struct intel_engine_cs *engine) if (ret) goto err; - vma = i915_vma_create(obj, &engine->i915->ggtt.base, NULL); + vma = i915_vma_instance(obj, &engine->i915->ggtt.base, NULL); if (IS_ERR(vma)) { ret = PTR_ERR(vma); goto err; @@ -1872,7 +1872,7 @@ intel_ring_create_vma(struct drm_i915_private *dev_priv, int size) /* mark ring buffers as read-only from GPU side by default */ obj->gt_ro = 1; - vma = i915_vma_create(obj, &dev_priv->ggtt.base, NULL); + vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL); if (IS_ERR(vma)) goto err; @@ -2462,7 +2462,7 @@ static void intel_ring_init_semaphores(struct drm_i915_private *dev_priv, if (IS_ERR(obj)) goto err; - vma = i915_vma_create(obj, &dev_priv->ggtt.base, NULL); + vma = i915_vma_instance(obj, &dev_priv->ggtt.base, NULL); if (IS_ERR(vma)) goto err_obj; -- 2.20.1