X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Futil.h;h=743b9fea169462d687f12f0dd52d5bbbfc75a2cc;hb=7d78f21c057ff50a823220d809ac38c3d907243c;hp=bff6153a8daf354f8325394db035789be4d6f57b;hpb=4c21aa063fa1c7f95800c95fafebedcd577ce674;p=sliver-openvswitch.git

diff --git a/lib/util.h b/lib/util.h
index bff6153a8..743b9fea1 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -151,6 +151,19 @@ is_pow2(uintmax_t x)
 #define CACHE_LINE_SIZE 64
 BUILD_ASSERT_DECL(IS_POW2(CACHE_LINE_SIZE));
 
+#define CACHE_LINE_SIZE 64      /* Correct for most CPUs. */
+
+static inline void
+ovs_prefetch_range(const void *start, size_t size)
+{
+    const char *addr = (const char *)start;
+    size_t ofs;
+
+    for (ofs = 0; ofs < size; ofs += CACHE_LINE_SIZE) {
+        OVS_PREFETCH(addr + ofs);
+    }
+}
+
 #ifndef MIN
 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
 #endif
@@ -486,6 +499,7 @@ uint64_t bitwise_get(const void *src, unsigned int src_len,
                      unsigned int src_ofs, unsigned int n_bits);
 
 void xsleep(unsigned int seconds);
+
 #ifdef _WIN32
 
 char *ovs_format_message(int error);