From: Chris Wilson Date: Tue, 22 May 2018 09:36:43 +0100 Subject: drm/i915/gtt: Allow pagedirectory allocations to fail Git-commit: 1abb70f5955d1a9021f96359a2c6502ca569b68d Patch-mainline: v4.19-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 As we handle the allocation failure of the page directory and tables by propagating the failure back to userspace, allow it to fail if direct reclaim is unable to satisfy the request (i.e. disable the oomkiller). The premise being that if we are unable to allocate a single page for the pagetable, we will not be able to handle the multitude of pages required for the gfx operation and we should back off to allow the system to recover. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106609 Signed-off-by: Chris Wilson Cc: Matthew Auld Cc: Joonas Lahtinen Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20180522083643.29601-1-chris@chris-wilson.co.uk Acked-by: Petr Tesarik --- drivers/gpu/drm/i915/i915_gem_gtt.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -42,7 +42,7 @@ #include "intel_drv.h" #include "intel_frontbuffer.h" -#define I915_GFP_DMA (GFP_KERNEL | __GFP_HIGHMEM) +#define I915_GFP_ALLOW_FAIL (GFP_KERNEL | __GFP_REPEAT | __GFP_NOWARN) /** * DOC: Global GTT views @@ -489,7 +489,7 @@ static int __setup_page_dma(struct i915_ struct i915_page_dma *p, gfp_t gfp) { - p->page = vm_alloc_page(vm, gfp | __GFP_NOWARN | __GFP_NORETRY); + p->page = vm_alloc_page(vm, gfp | I915_GFP_ALLOW_FAIL); if (unlikely(!p->page)) return -ENOMEM; @@ -506,7 +506,7 @@ static int __setup_page_dma(struct i915_ static int setup_page_dma(struct i915_address_space *vm, struct i915_page_dma *p) { - return __setup_page_dma(vm, p, I915_GFP_DMA); + return __setup_page_dma(vm, p, __GFP_HIGHMEM); } static void cleanup_page_dma(struct i915_address_space *vm, @@ -614,7 +614,7 @@ static struct i915_page_table *alloc_pt( { struct i915_page_table *pt; - pt = kmalloc(sizeof(*pt), GFP_KERNEL | __GFP_NOWARN); + pt = kmalloc(sizeof(*pt), I915_GFP_ALLOW_FAIL); if (unlikely(!pt)) return ERR_PTR(-ENOMEM); @@ -651,7 +651,7 @@ static struct i915_page_directory *alloc { struct i915_page_directory *pd; - pd = kzalloc(sizeof(*pd), GFP_KERNEL | __GFP_NOWARN); + pd = kzalloc(sizeof(*pd), I915_GFP_ALLOW_FAIL); if (unlikely(!pd)) return ERR_PTR(-ENOMEM); @@ -685,7 +685,7 @@ static int __pdp_init(struct i915_addres const unsigned int pdpes = i915_pdpes_per_pdp(vm); pdp->page_directory = kmalloc_array(pdpes, sizeof(*pdp->page_directory), - GFP_KERNEL | __GFP_NOWARN); + I915_GFP_ALLOW_FAIL); if (unlikely(!pdp->page_directory)) return -ENOMEM; @@ -1229,7 +1229,7 @@ static int gen8_init_scratch(struct i915 { int ret; - ret = setup_scratch_page(vm, I915_GFP_DMA); + ret = setup_scratch_page(vm, __GFP_HIGHMEM); if (ret) return ret; @@ -1974,7 +1974,7 @@ static int gen6_init_scratch(struct i915 { int ret; - ret = setup_scratch_page(vm, I915_GFP_DMA); + ret = setup_scratch_page(vm, __GFP_HIGHMEM); if (ret) return ret;