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yaml --- r: 35969 b: refs/heads/master c: 2049336 h: refs/heads/master i: 35967: 235b6c1 v: v3
git-mirror · Sep 26, 2006 · bcf779d · bcf779d
1 parent 7a11d34
commit bcf779d
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9ddab42d1e65dfbdb14588346d47fb142090ab40
+refs/heads/master: 2049336f60d297c85ac977245b9326ec00396114
diff --git a/trunk/arch/x86_64/kernel/setup.c b/trunk/arch/x86_64/kernel/setup.c
@@ -728,6 +728,12 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
 
 	/* Fix cpuid4 emulation for more */
 	num_cache_leaves = 3;
+
+	/* When there is only one core no need to synchronize RDTSC */
+	if (num_possible_cpus() == 1)
+	        set_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability);
+	else
+	        clear_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability);
 }
 
 static void __cpuinit detect_ht(struct cpuinfo_x86 *c)