Merge branch 'for-linus' of git://git.alsa-project.org/alsa-kernel

[pandora-kernel.git] / kernel / cpuset.c

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 039baa4..798b3ab 100644 (file)
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1037,8 +1037,8 @@ int current_cpuset_is_being_rebound(void)
 
 static int update_relax_domain_level(struct cpuset *cs, s64 val)
 {
-       if ((int)val < 0)
-               val = -1;
+       if (val < -1 || val >= SD_LV_MAX)
+               return -EINVAL;
 
        if (val != cs->relax_domain_level) {
                cs->relax_domain_level = val;
@@ -1882,7 +1882,7 @@ static void scan_for_empty_cpusets(const struct cpuset *root)
  * in order to minimize text size.
  */
 
-static void common_cpu_mem_hotplug_unplug(void)
+static void common_cpu_mem_hotplug_unplug(int rebuild_sd)
 {
        cgroup_lock();
 
@@ -1890,6 +1890,13 @@ static void common_cpu_mem_hotplug_unplug(void)
        top_cpuset.mems_allowed = node_states[N_HIGH_MEMORY];
        scan_for_empty_cpusets(&top_cpuset);
 
+       /*
+        * Scheduler destroys domains on hotplug events.
+        * Rebuild them based on the current settings.
+        */
+       if (rebuild_sd)
+               rebuild_sched_domains();
+
        cgroup_unlock();
 }
 
@@ -1906,11 +1913,22 @@ static void common_cpu_mem_hotplug_unplug(void)
 static int cpuset_handle_cpuhp(struct notifier_block *unused_nb,
                                unsigned long phase, void *unused_cpu)
 {
-       if (phase == CPU_DYING || phase == CPU_DYING_FROZEN)
+       switch (phase) {
+       case CPU_UP_CANCELED:
+       case CPU_UP_CANCELED_FROZEN:
+       case CPU_DOWN_FAILED:
+       case CPU_DOWN_FAILED_FROZEN:
+       case CPU_ONLINE:
+       case CPU_ONLINE_FROZEN:
+       case CPU_DEAD:
+       case CPU_DEAD_FROZEN:
+               common_cpu_mem_hotplug_unplug(1);
+               break;
+       default:
                return NOTIFY_DONE;
+       }
 
-       common_cpu_mem_hotplug_unplug();
-       return 0;
+       return NOTIFY_OK;
 }
 
 #ifdef CONFIG_MEMORY_HOTPLUG
@@ -1923,7 +1941,7 @@ static int cpuset_handle_cpuhp(struct notifier_block *unused_nb,
 
 void cpuset_track_online_nodes(void)
 {
-       common_cpu_mem_hotplug_unplug();
+       common_cpu_mem_hotplug_unplug(0);
 }
 #endif