Commit 2a0788dc authored Feb 26, 2014 by Ross Zwisler Committed by H. Peter Anvin Feb 27, 2014

x86: Use clflushopt in drm_clflush_virt_range



If clflushopt is available on the system, use it instead of clflush in
drm_clflush_virt_range.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Link: http://lkml.kernel.org/r/1393441612-19729-5-git-send-email-ross.zwisler@linux.intel.com


Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

parent 2a0c772f

drivers/gpu/drm/drm_cache.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -139,7 +139,7 @@ drm_clflush_virt_range(char *addr, unsigned long length)
		mb();
		for (; addr < end; addr += boot_cpu_data.x86_clflush_size)
		clflush(addr);
		clflush(end - 1);
		clflushopt(end - 1);
		mb();
		return;
		}