---

yaml --- r: 120806 b: refs/heads/master c: bb8dd27 h: refs/heads/master v: v3
git-mirror · Nov 12, 2008 · 05b5f3a · 05b5f3a
1 parent eca235f
commit 05b5f3a
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Showing 2 changed files with 13 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2ddded213895e41b9cfe1c084127e6c01632ac1a
+refs/heads/master: bb8dd270e62217e2d2172094c6c352c4ddc0a127
diff --git a/trunk/arch/x86/kernel/reboot.c b/trunk/arch/x86/kernel/reboot.c
@@ -519,7 +519,7 @@ void machine_crash_shutdown(struct pt_regs *regs)
 #endif
 
 
-#if defined(CONFIG_SMP) && defined(CONFIG_X86_LOCAL_APIC)
+#if defined(CONFIG_SMP)
 
 /* This keeps a track of which one is crashing cpu. */
 static int crashing_cpu;
@@ -568,6 +568,12 @@ static struct notifier_block crash_nmi_nb = {
 	.notifier_call = crash_nmi_callback,
 };
 
+/* Halt all other CPUs, calling the specified function on each of them
+ *
+ * This function can be used to halt all other CPUs on crash
+ * or emergency reboot time. The function passed as parameter
+ * will be called inside a NMI handler on all CPUs.
+ */
 void nmi_shootdown_cpus(nmi_shootdown_cb callback)
 {
 	unsigned long msecs;
@@ -596,4 +602,9 @@ void nmi_shootdown_cpus(nmi_shootdown_cb callback)
 
 	/* Leave the nmi callback set */
 }
+#else /* !CONFIG_SMP */
+void nmi_shootdown_cpus(nmi_shootdown_cb callback)
+{
+	/* No other CPUs to shoot down */
+}
 #endif