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drm: wbinvd is cache coherent.
author
Dave Airlie
<airlied@redhat.com>
Tue, 7 Oct 2008 03:41:49 +0000
(13:41 +1000)
committer
Dave Airlie
<airlied@linux.ie>
Fri, 17 Oct 2008 21:10:53 +0000
(07:10 +1000)
doing an ipi for the wbinvd case isn't necessary.
Signed-off-by: Dave Airlie <airlied@redhat.com>
drivers/gpu/drm/drm_cache.c
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diff --git
a/drivers/gpu/drm/drm_cache.c
b/drivers/gpu/drm/drm_cache.c
index
9475f7d
..
0e994a0
100644
(file)
--- a/
drivers/gpu/drm/drm_cache.c
+++ b/
drivers/gpu/drm/drm_cache.c
@@
-47,12
+47,6
@@
drm_clflush_page(struct page *page)
}
#endif
-static void
-drm_clflush_ipi_handler(void *null)
-{
- wbinvd();
-}
-
void
drm_clflush_pages(struct page *pages[], unsigned long num_pages)
{
@@
-68,9
+62,8
@@
drm_clflush_pages(struct page *pages[], unsigned long num_pages)
return;
}
-#endif
- if (on_each_cpu(drm_clflush_ipi_handler, NULL, 1) != 0)
- DRM_ERROR("Timed out waiting for cache flush.\n");
+ wbinvd();
+#endif
}
EXPORT_SYMBOL(drm_clflush_pages);