From 17793c9a4659b272a9f892d44940062ed8b5fd0e Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 7 Mar 2014 08:30:36 +0000 Subject: [PATCH] drm/i915: Process page flags once rather than per pwrite/pread We used to lock individual pages inside the buffer object and so needed to update the page flags every time. However, we now pin the pages into the object for the duration of the pwrite/pread (and hopefully much longer) and so we can forgo the flag updates until we release all the pages. Signed-off-by: Chris Wilson Reviewed-by: Brad Volkin Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 177c20722656..da5d9ca98024 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -510,12 +510,10 @@ i915_gem_shmem_pread(struct drm_device *dev, mutex_lock(&dev->struct_mutex); -next_page: - mark_page_accessed(page); - if (ret) goto out; +next_page: remain -= page_length; user_data += page_length; offset += page_length; @@ -831,13 +829,10 @@ i915_gem_shmem_pwrite(struct drm_device *dev, mutex_lock(&dev->struct_mutex); -next_page: - set_page_dirty(page); - mark_page_accessed(page); - if (ret) goto out; +next_page: remain -= page_length; user_data += page_length; offset += page_length; -- 2.20.1