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drm: wbinvd is cache coherent.

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doing an ipi for the wbinvd case isn't necessary.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2008-10-07 13:41:49 +10:00 committed by Dave Airlie
parent e7d22bc3cb
commit e0f0754ff6
1 changed files with 2 additions and 9 deletions
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11
drivers/gpu/drm/drm_cache.c
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@ -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);