From c4213885cd01c6ec15f44b4d06d67790601e1731 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Thu, 19 Jun 2014 12:06:10 -0700 Subject: [PATCH] drm/i915: Move compressed_fb to static allocation We are already using the size to determine whether or not to free the object, so there is no functional change there. Almost everything else has changed to static allocations of the drm_mm_node too. Aside from bringing this inline with much of our other code, this makes error paths slightly simpler, which benefits the look of an upcoming patch. Signed-off-by: Ben Widawsky Reviewed-by: Rodrigo Vivi Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_drv.h | 2 +- drivers/gpu/drm/i915/i915_gem_stolen.c | 27 ++++++++++---------------- 2 files changed, 11 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index aa849f2a0d9f..7aeaaaabf308 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -604,7 +604,7 @@ struct i915_fbc { enum plane plane; int y; - struct drm_mm_node *compressed_fb; + struct drm_mm_node compressed_fb; struct drm_mm_node *compressed_llb; struct intel_fbc_work { diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c index 644117855e01..642fd36d7bf1 100644 --- a/drivers/gpu/drm/i915/i915_gem_stolen.c +++ b/drivers/gpu/drm/i915/i915_gem_stolen.c @@ -106,27 +106,25 @@ static unsigned long i915_stolen_to_physical(struct drm_device *dev) static int i915_setup_compression(struct drm_device *dev, int size) { struct drm_i915_private *dev_priv = dev->dev_private; - struct drm_mm_node *compressed_fb, *uninitialized_var(compressed_llb); + struct drm_mm_node *uninitialized_var(compressed_llb); int ret; - compressed_fb = kzalloc(sizeof(*compressed_fb), GFP_KERNEL); - if (!compressed_fb) - goto err_llb; - /* Try to over-allocate to reduce reallocations and fragmentation */ - ret = drm_mm_insert_node(&dev_priv->mm.stolen, compressed_fb, + ret = drm_mm_insert_node(&dev_priv->mm.stolen, + &dev_priv->fbc.compressed_fb, size <<= 1, 4096, DRM_MM_SEARCH_DEFAULT); if (ret) - ret = drm_mm_insert_node(&dev_priv->mm.stolen, compressed_fb, + ret = drm_mm_insert_node(&dev_priv->mm.stolen, + &dev_priv->fbc.compressed_fb, size >>= 1, 4096, DRM_MM_SEARCH_DEFAULT); if (ret) goto err_llb; if (HAS_PCH_SPLIT(dev)) - I915_WRITE(ILK_DPFC_CB_BASE, compressed_fb->start); + I915_WRITE(ILK_DPFC_CB_BASE, dev_priv->fbc.compressed_fb.start); else if (IS_GM45(dev)) { - I915_WRITE(DPFC_CB_BASE, compressed_fb->start); + I915_WRITE(DPFC_CB_BASE, dev_priv->fbc.compressed_fb.start); } else { compressed_llb = kzalloc(sizeof(*compressed_llb), GFP_KERNEL); if (!compressed_llb) @@ -140,12 +138,11 @@ static int i915_setup_compression(struct drm_device *dev, int size) dev_priv->fbc.compressed_llb = compressed_llb; I915_WRITE(FBC_CFB_BASE, - dev_priv->mm.stolen_base + compressed_fb->start); + dev_priv->mm.stolen_base + dev_priv->fbc.compressed_fb.start); I915_WRITE(FBC_LL_BASE, dev_priv->mm.stolen_base + compressed_llb->start); } - dev_priv->fbc.compressed_fb = compressed_fb; dev_priv->fbc.size = size; DRM_DEBUG_KMS("reserved %d bytes of contiguous stolen space for FBC\n", @@ -155,9 +152,8 @@ static int i915_setup_compression(struct drm_device *dev, int size) err_fb: kfree(compressed_llb); - drm_mm_remove_node(compressed_fb); + drm_mm_remove_node(&dev_priv->fbc.compressed_fb); err_llb: - kfree(compressed_fb); pr_info_once("drm: not enough stolen space for compressed buffer (need %d more bytes), disabling. Hint: you may be able to increase stolen memory size in the BIOS to avoid this.\n", size); return -ENOSPC; } @@ -185,10 +181,7 @@ void i915_gem_stolen_cleanup_compression(struct drm_device *dev) if (dev_priv->fbc.size == 0) return; - if (dev_priv->fbc.compressed_fb) { - drm_mm_remove_node(dev_priv->fbc.compressed_fb); - kfree(dev_priv->fbc.compressed_fb); - } + drm_mm_remove_node(&dev_priv->fbc.compressed_fb); if (dev_priv->fbc.compressed_llb) { drm_mm_remove_node(dev_priv->fbc.compressed_llb); -- 2.20.1