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drm/i915: Use memset64() to prefill the GTT page
author
Chris Wilson
<chris@chris-wilson.co.uk>
Tue, 26 Sep 2017 09:53:53 +0000
(10:53 +0100)
committer
Chris Wilson
<chris@chris-wilson.co.uk>
Thu, 28 Sep 2017 20:00:48 +0000
(21:00 +0100)
Take advantage of optimised memset64() instead of open coding it to
prefill the GTT pages.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link:
https://patchwork.freedesktop.org/patch/msgid/20170926095353.11036-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
drivers/gpu/drm/i915/i915_gem_gtt.c
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diff --git
a/drivers/gpu/drm/i915/i915_gem_gtt.c
b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 64d785262d1447b18b9b7e5362e6ce3cc0017184..4c82ceb8d3186845c2383c624ddaea8edaeba2d0 100644
(file)
--- a/
drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/
drivers/gpu/drm/i915/i915_gem_gtt.c
@@
-481,10
+481,8
@@
static void fill_page_dma(struct i915_address_space *vm,
const u64 val)
{
u64 * const vaddr = kmap_atomic(p->page);
- int i;
- for (i = 0; i < 512; i++)
- vaddr[i] = val;
+ memset64(vaddr, val, PAGE_SIZE / sizeof(val));
kunmap_atomic(vaddr);
}