X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=kernel%2Fcpu.c;h=86d49045daed050ee3e1c3d18a8d80d8b1793b85;hb=12886871ae7a6f4e2b1ea371f6604d8239dda724;hp=e202a68d1cc180cf62ade78b025ec2329c8aabcd;hpb=4fb8af10d0fd09372d52966b76922b9e82bbc950;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/cpu.c b/kernel/cpu.c
index e202a68d1cc..86d49045dae 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -199,13 +199,14 @@ static int __ref take_cpu_down(void *_param)
 	struct take_cpu_down_param *param = _param;
 	int err;
 
-	raw_notifier_call_chain(&cpu_chain, CPU_DYING | param->mod,
-				param->hcpu);
 	/* Ensure this CPU doesn't handle any more interrupts. */
 	err = __cpu_disable();
 	if (err < 0)
 		return err;
 
+	raw_notifier_call_chain(&cpu_chain, CPU_DYING | param->mod,
+				param->hcpu);
+
 	/* Force idle task to run as soon as we yield: it should
 	   immediately notice cpu is offline and die quickly. */
 	sched_idle_next();
@@ -349,6 +350,8 @@ static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen)
 		goto out_notify;
 	BUG_ON(!cpu_online(cpu));
 
+	cpu_set(cpu, cpu_active_map);
+
 	/* Now call notifier in preparation. */
 	raw_notifier_call_chain(&cpu_chain, CPU_ONLINE | mod, hcpu);
 
@@ -367,7 +370,7 @@ int __cpuinit cpu_up(unsigned int cpu)
 	if (!cpu_isset(cpu, cpu_possible_map)) {
 		printk(KERN_ERR "can't online cpu %d because it is not "
 			"configured as may-hotadd at boot time\n", cpu);
-#if defined(CONFIG_IA64) || defined(CONFIG_X86_64) || defined(CONFIG_S390)
+#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
 		printk(KERN_ERR "please check additional_cpus= boot "
 				"parameter\n");
 #endif
@@ -383,9 +386,6 @@ int __cpuinit cpu_up(unsigned int cpu)
 
 	err = _cpu_up(cpu, 0);
 
-	if (cpu_online(cpu))
-		cpu_set(cpu, cpu_active_map);
-
 out:
 	cpu_maps_update_done();
 	return err;
@@ -454,6 +454,25 @@ out:
 }
 #endif /* CONFIG_PM_SLEEP_SMP */
 
+/**
+ * notify_cpu_starting(cpu) - call the CPU_STARTING notifiers
+ * @cpu: cpu that just started
+ *
+ * This function calls the cpu_chain notifiers with CPU_STARTING.
+ * It must be called by the arch code on the new cpu, before the new cpu
+ * enables interrupts and before the "boot" cpu returns from __cpu_up().
+ */
+void notify_cpu_starting(unsigned int cpu)
+{
+	unsigned long val = CPU_STARTING;
+
+#ifdef CONFIG_PM_SLEEP_SMP
+	if (cpu_isset(cpu, frozen_cpus))
+		val = CPU_STARTING_FROZEN;
+#endif /* CONFIG_PM_SLEEP_SMP */
+	raw_notifier_call_chain(&cpu_chain, val, (void *)(long)cpu);
+}
+
 #endif /* CONFIG_SMP */
 
 /*