define prefetch as a noop on !x86

2012-07-26 21:37:58 +00:00 · 2012-07-26 21:37:58 +00:00 · 29ecb031b6
commit 29ecb031b6
parent 0fafb093b9
1 changed files with 4 additions and 0 deletions
--- a/sys/dev/netmap/netmap.c
+++ b/sys/dev/netmap/netmap.c
@ -220,7 +220,11 @@ struct nm_bridge nm_bridges[NM_BRIDGES];
 #ifndef linux
 static inline void prefetch (const void *x)
 {
+#if defined(__i386__) || defined(__amd64__)
        __asm volatile("prefetcht0 %0" :: "m" (*(const unsigned long *)x));
+#else
+	(void)x;
+#endif
 }
 #endif /* !linux */