From: Tvrtko Ursulin <tursulin@ursulin.net> To: Intel-gfx@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Chris Wilson <chris@chris-wilson.co.uk>, Tvrtko Ursulin <tvrtko.ursulin@intel.com> Subject: [PATCH 5/5] drm/i915: Use __sg_alloc_table_from_pages for userptr allocations Date: Fri, 21 Oct 2016 15:11:23 +0100 [thread overview] Message-ID: <1477059083-3500-6-git-send-email-tvrtko.ursulin@linux.intel.com> (raw) In-Reply-To: <1477059083-3500-1-git-send-email-tvrtko.ursulin@linux.intel.com> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com> With the addition of __sg_alloc_table_from_pages we can control the maximum coallescing size and eliminate a separate path for allocating backing store here. This also makes the tables as compact as possible in all cases. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> --- drivers/gpu/drm/i915/i915_drv.h | 9 +++++++++ drivers/gpu/drm/i915/i915_gem.c | 11 +---------- drivers/gpu/drm/i915/i915_gem_userptr.c | 29 +++++++---------------------- 3 files changed, 17 insertions(+), 32 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 5b2b7f3c6e76..577a3a87f680 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -4001,4 +4001,13 @@ int remap_io_mapping(struct vm_area_struct *vma, __T; \ }) +static inline unsigned int i915_swiotlb_max_size(void) +{ +#if IS_ENABLED(CONFIG_SWIOTLB) + return swiotlb_nr_tbl() << IO_TLB_SHIFT; +#else + return UINT_MAX; +#endif +} + #endif diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 4bf675568a37..18125d7279c6 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2205,15 +2205,6 @@ i915_gem_object_put_pages(struct drm_i915_gem_object *obj) return 0; } -static unsigned int swiotlb_max_size(void) -{ -#if IS_ENABLED(CONFIG_SWIOTLB) - return swiotlb_nr_tbl() << IO_TLB_SHIFT; -#else - return UINT_MAX; -#endif -} - static int i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) { @@ -2222,7 +2213,7 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) struct address_space *mapping; struct sg_table *st; struct page *page, **pages; - unsigned int max_segment = swiotlb_max_size(); + unsigned int max_segment = i915_swiotlb_max_size(); int ret; gfp_t gfp; diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c index e537930c64b5..17dca225a3e0 100644 --- a/drivers/gpu/drm/i915/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/i915_gem_userptr.c @@ -397,36 +397,21 @@ struct get_pages_work { struct task_struct *task; }; -#if IS_ENABLED(CONFIG_SWIOTLB) -#define swiotlb_active() swiotlb_nr_tbl() -#else -#define swiotlb_active() 0 -#endif - static int st_set_pages(struct sg_table **st, struct page **pvec, int num_pages) { - struct scatterlist *sg; - int ret, n; + unsigned int max_segment = i915_swiotlb_max_size(); + int ret; *st = kmalloc(sizeof(**st), GFP_KERNEL); if (*st == NULL) return -ENOMEM; - if (swiotlb_active()) { - ret = sg_alloc_table(*st, num_pages, GFP_KERNEL); - if (ret) - goto err; - - for_each_sg((*st)->sgl, sg, num_pages, n) - sg_set_page(sg, pvec[n], PAGE_SIZE, 0); - } else { - ret = sg_alloc_table_from_pages(*st, pvec, num_pages, - 0, num_pages << PAGE_SHIFT, - GFP_KERNEL); - if (ret) - goto err; - } + ret = __sg_alloc_table_from_pages(*st, pvec, num_pages, 0, + num_pages << PAGE_SHIFT, + GFP_KERNEL, max_segment); + if (ret) + goto err; return 0; -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Tvrtko Ursulin <tursulin@ursulin.net> To: Intel-gfx@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org Subject: [PATCH 5/5] drm/i915: Use __sg_alloc_table_from_pages for userptr allocations Date: Fri, 21 Oct 2016 15:11:23 +0100 [thread overview] Message-ID: <1477059083-3500-6-git-send-email-tvrtko.ursulin@linux.intel.com> (raw) In-Reply-To: <1477059083-3500-1-git-send-email-tvrtko.ursulin@linux.intel.com> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com> With the addition of __sg_alloc_table_from_pages we can control the maximum coallescing size and eliminate a separate path for allocating backing store here. This also makes the tables as compact as possible in all cases. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> --- drivers/gpu/drm/i915/i915_drv.h | 9 +++++++++ drivers/gpu/drm/i915/i915_gem.c | 11 +---------- drivers/gpu/drm/i915/i915_gem_userptr.c | 29 +++++++---------------------- 3 files changed, 17 insertions(+), 32 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 5b2b7f3c6e76..577a3a87f680 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -4001,4 +4001,13 @@ int remap_io_mapping(struct vm_area_struct *vma, __T; \ }) +static inline unsigned int i915_swiotlb_max_size(void) +{ +#if IS_ENABLED(CONFIG_SWIOTLB) + return swiotlb_nr_tbl() << IO_TLB_SHIFT; +#else + return UINT_MAX; +#endif +} + #endif diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 4bf675568a37..18125d7279c6 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2205,15 +2205,6 @@ i915_gem_object_put_pages(struct drm_i915_gem_object *obj) return 0; } -static unsigned int swiotlb_max_size(void) -{ -#if IS_ENABLED(CONFIG_SWIOTLB) - return swiotlb_nr_tbl() << IO_TLB_SHIFT; -#else - return UINT_MAX; -#endif -} - static int i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) { @@ -2222,7 +2213,7 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) struct address_space *mapping; struct sg_table *st; struct page *page, **pages; - unsigned int max_segment = swiotlb_max_size(); + unsigned int max_segment = i915_swiotlb_max_size(); int ret; gfp_t gfp; diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c index e537930c64b5..17dca225a3e0 100644 --- a/drivers/gpu/drm/i915/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/i915_gem_userptr.c @@ -397,36 +397,21 @@ struct get_pages_work { struct task_struct *task; }; -#if IS_ENABLED(CONFIG_SWIOTLB) -#define swiotlb_active() swiotlb_nr_tbl() -#else -#define swiotlb_active() 0 -#endif - static int st_set_pages(struct sg_table **st, struct page **pvec, int num_pages) { - struct scatterlist *sg; - int ret, n; + unsigned int max_segment = i915_swiotlb_max_size(); + int ret; *st = kmalloc(sizeof(**st), GFP_KERNEL); if (*st == NULL) return -ENOMEM; - if (swiotlb_active()) { - ret = sg_alloc_table(*st, num_pages, GFP_KERNEL); - if (ret) - goto err; - - for_each_sg((*st)->sgl, sg, num_pages, n) - sg_set_page(sg, pvec[n], PAGE_SIZE, 0); - } else { - ret = sg_alloc_table_from_pages(*st, pvec, num_pages, - 0, num_pages << PAGE_SHIFT, - GFP_KERNEL); - if (ret) - goto err; - } + ret = __sg_alloc_table_from_pages(*st, pvec, num_pages, 0, + num_pages << PAGE_SHIFT, + GFP_KERNEL, max_segment); + if (ret) + goto err; return 0; -- 2.7.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2016-10-21 14:12 UTC|newest] Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-10-21 14:11 [PATCH 0/5] Avoid pessimistic scatter-gather allocation Tvrtko Ursulin 2016-10-21 14:11 ` Tvrtko Ursulin 2016-10-21 14:11 ` [PATCH 1/5] lib/scatterlist: Fix offset type in sg_alloc_table_from_pages Tvrtko Ursulin 2016-10-21 14:11 ` Tvrtko Ursulin 2016-10-24 7:21 ` Marek Szyprowski 2016-10-21 14:11 ` [PATCH 2/5] lib/scatterlist: Avoid potential scatterlist entry overflow Tvrtko Ursulin 2016-10-21 14:11 ` [PATCH 3/5] lib/scatterlist: Introduce and export __sg_alloc_table_from_pages Tvrtko Ursulin 2016-10-21 14:11 ` [PATCH 4/5] drm/i915: Use __sg_alloc_table_from_pages for allocating object backing store Tvrtko Ursulin 2016-10-21 14:11 ` Tvrtko Ursulin 2016-10-21 14:27 ` Chris Wilson 2016-10-21 14:55 ` [Intel-gfx] " Tvrtko Ursulin 2016-10-21 14:55 ` Tvrtko Ursulin 2016-10-21 14:11 ` Tvrtko Ursulin [this message] 2016-10-21 14:11 ` [PATCH 5/5] drm/i915: Use __sg_alloc_table_from_pages for userptr allocations Tvrtko Ursulin 2016-10-21 15:53 ` ✗ Fi.CI.BAT: failure for Avoid pessimistic scatter-gather allocation Patchwork
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