[src/trunk]: src/sys/external/bsd/drm2/drm skip clflush on arm

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b1d968dd999e
branches:  trunk
changeset: 341081:b1d968dd999e
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Oct 17 21:11:56 2015 +0000

description:
skip clflush on arm

diffstat:

 sys/external/bsd/drm2/drm/drm_cache.c |  23 +++++++++++++++++------
 1 files changed, 17 insertions(+), 6 deletions(-)

diffs (89 lines):

diff -r 20346b074c62 -r b1d968dd999e sys/external/bsd/drm2/drm/drm_cache.c
--- a/sys/external/bsd/drm2/drm/drm_cache.c     Sat Oct 17 21:11:06 2015 +0000
+++ b/sys/external/bsd/drm2/drm/drm_cache.c     Sat Oct 17 21:11:56 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: drm_cache.c,v 1.7 2015/10/17 15:13:19 jmcneill Exp $   */
+/*     $NetBSD: drm_cache.c,v 1.8 2015/10/17 21:11:56 jmcneill Exp $   */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -30,8 +30,9 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: drm_cache.c,v 1.7 2015/10/17 15:13:19 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: drm_cache.c,v 1.8 2015/10/17 21:11:56 jmcneill Exp $");
 
+#include <sys/param.h>
 #include <sys/types.h>
 #include <sys/xcall.h>
 
@@ -41,27 +42,34 @@
 
 #include <drm/drmP.h>
 
+#if !defined(__arm__)
+#define DRM_CLFLUSH    1
+#endif
+
+#if defined(DRM_CLFLUSH)
 static bool            drm_md_clflush_finegrained_p(void);
 static void            drm_md_clflush_all(void);
 static void            drm_md_clflush_page(struct page *);
 static void            drm_md_clflush_virt_range(const void *, size_t);
+#endif
 
 void
 drm_clflush_pages(struct page **pages, unsigned long npages)
 {
-
+#if defined(DRM_CLFLUSH)
        if (drm_md_clflush_finegrained_p()) {
                while (npages--)
                        drm_md_clflush_page(pages[npages]);
        } else {
                drm_md_clflush_all();
        }
+#endif
 }
 
 void
 drm_clflush_pglist(struct pglist *list)
 {
-
+#if defined(DRM_CLFLUSH)
        if (drm_md_clflush_finegrained_p()) {
                struct vm_page *page;
 
@@ -71,26 +79,29 @@
        } else {
                drm_md_clflush_all();
        }
+#endif
 }
 
 void
 drm_clflush_page(struct page *page)
 {
-
+#if defined(DRM_CLFLUSH)
        if (drm_md_clflush_finegrained_p())
                drm_md_clflush_page(page);
        else
                drm_md_clflush_all();
+#endif
 }
 
 void
 drm_clflush_virt_range(const void *vaddr, size_t nbytes)
 {
-
+#if defined(DRM_CLFLUSH)
        if (drm_md_clflush_finegrained_p())
                drm_md_clflush_virt_range(vaddr, nbytes);
        else
                drm_md_clflush_all();
+#endif
 }
 
 #if defined(__i386__) || defined(__x86_64__)