From 454a325a9768aa9202843f2a4aea7bef94495d94 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 15 Oct 2019 11:01:55 +0100 Subject: [PATCH] drm/i915: Remove leftover vma->obj->pages_pin_count on insert/remove We now do the page pin count upfront in vma_get_pages/vma_put_pages, so that we do the allocations before we enter the vm->mutex. Our vma page references we are tracked in vma->pages_count and the extra obj->pages_pin_count being performed later in i915_vma_insert and i915_vma_remove is redundant, and worse throws off the shrinker's logic on when it can free an object by unbinding it. Reported-by: Daniele Ceraolo Spurio Reported-by: Matthew Auld Signed-off-by: Chris Wilson Cc: Matthew Auld Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20191015100155.10376-1-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_vma.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index 7d936254bde7..e90c4d0af8fd 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -703,7 +703,6 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) list_add_tail(&vma->vm_link, &vma->vm->bound_list); if (vma->obj) { - atomic_inc(&vma->obj->mm.pages_pin_count); atomic_inc(&vma->obj->bind_count); assert_bind_count(vma->obj); } @@ -726,14 +725,12 @@ i915_vma_remove(struct i915_vma *vma) if (vma->obj) { struct drm_i915_gem_object *obj = vma->obj; - atomic_dec(&obj->bind_count); - /* * And finally now the object is completely decoupled from this * vma, we can drop its hold on the backing storage and allow * it to be reaped by the shrinker. */ - i915_gem_object_unpin_pages(obj); + atomic_dec(&obj->bind_count); assert_bind_count(obj); } -- 2.11.0