From 217e46b576ef0d5eed10ddfeb2b29bd3de289e95 Mon Sep 17 00:00:00 2001 From: John Harrison Date: Fri, 29 May 2015 17:43:29 +0100 Subject: [PATCH] drm/i915: Update alloc_request to return the allocated request The alloc_request() function does not actually return the newly allocated request. Instead, it must be pulled from ring->outstanding_lazy_request. This patch fixes this so that code can create a request and start using it knowing exactly which request it actually owns. v2: Updated for new i915_gem_request_alloc() scheme. For: VIZ-5115 Signed-off-by: John Harrison Reviewed-by: Tomas Elf Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 3 ++- drivers/gpu/drm/i915/i915_gem.c | 10 +++++++--- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 3 ++- drivers/gpu/drm/i915/intel_lrc.c | 3 ++- drivers/gpu/drm/i915/intel_ringbuffer.c | 3 ++- 5 files changed, 15 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index fdb185da2eef..c439461db9af 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2206,7 +2206,8 @@ struct drm_i915_gem_request { }; int i915_gem_request_alloc(struct intel_engine_cs *ring, - struct intel_context *ctx); + struct intel_context *ctx, + struct drm_i915_gem_request **req_out); void i915_gem_request_cancel(struct drm_i915_gem_request *req); void i915_gem_request_free(struct kref *req_ref); diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 80705dee92d6..a0f51478581f 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2634,13 +2634,17 @@ void i915_gem_request_free(struct kref *req_ref) } int i915_gem_request_alloc(struct intel_engine_cs *ring, - struct intel_context *ctx) + struct intel_context *ctx, + struct drm_i915_gem_request **req_out) { struct drm_i915_private *dev_priv = to_i915(ring->dev); struct drm_i915_gem_request *req; int ret; - if (ring->outstanding_lazy_request) + if (!req_out) + return -EINVAL; + + if ((*req_out = ring->outstanding_lazy_request) != NULL) return 0; req = kmem_cache_zalloc(dev_priv->requests, GFP_KERNEL); @@ -2686,7 +2690,7 @@ int i915_gem_request_alloc(struct intel_engine_cs *ring, */ intel_ring_reserved_space_reserve(req->ringbuf, MIN_SPACE_FOR_ADD_REQUEST); - ring->outstanding_lazy_request = req; + *req_out = ring->outstanding_lazy_request = req; return 0; err: diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 4bd10df1911c..9c9e20ace5e3 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -1415,6 +1415,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, struct i915_address_space *vm; struct i915_execbuffer_params params_master; /* XXX: will be removed later */ struct i915_execbuffer_params *params = ¶ms_master; + struct drm_i915_gem_request *request; const u32 ctx_id = i915_execbuffer2_get_context_id(*args); u32 dispatch_flags; int ret; @@ -1614,7 +1615,7 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, params->batch_obj_vm_offset = i915_gem_obj_offset(batch_obj, vm); /* Allocate a request for this batch buffer nice and early. */ - ret = i915_gem_request_alloc(ring, ctx); + ret = i915_gem_request_alloc(ring, ctx, &request); if (ret) goto err_batch_unpin; diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 54654d25608a..8af35889740b 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -818,6 +818,7 @@ static int logical_ring_prepare(struct intel_ringbuffer *ringbuf, static int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, struct intel_context *ctx, int num_dwords) { + struct drm_i915_gem_request *req; struct intel_engine_cs *ring = ringbuf->ring; struct drm_device *dev = ring->dev; struct drm_i915_private *dev_priv = dev->dev_private; @@ -833,7 +834,7 @@ static int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, return ret; /* Preallocate the olr before touching the ring */ - ret = i915_gem_request_alloc(ring, ctx); + ret = i915_gem_request_alloc(ring, ctx, &req); if (ret) return ret; diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index b48aea12acc4..13eab1757972 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -2277,6 +2277,7 @@ static int __intel_ring_prepare(struct intel_engine_cs *ring, int bytes) int intel_ring_begin(struct intel_engine_cs *ring, int num_dwords) { + struct drm_i915_gem_request *req; struct drm_i915_private *dev_priv = ring->dev->dev_private; int ret; @@ -2290,7 +2291,7 @@ int intel_ring_begin(struct intel_engine_cs *ring, return ret; /* Preallocate the olr before touching the ring */ - ret = i915_gem_request_alloc(ring, ring->default_context); + ret = i915_gem_request_alloc(ring, ring->default_context, &req); if (ret) return ret; -- 2.20.1