Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
  sched: Use correct macro to display sched_child_runs_first in /proc/sched_debug
  sched: No need for bootmem special cases
  sched: Revert nohz_ratelimit() for now
  sched: Reduce update_group_power() calls
  sched: Update rq->clock for nohz balanced cpus
  sched: Fix spelling of sibling
  sched, cpuset: Drop __cpuexit from cpu hotplug callbacks
  sched: Fix the racy usage of thread_group_cputimer() in fastpath_timer_check()
  sched: run_posix_cpu_timers: Don't check ->exit_state, use lock_task_sighand()
  sched: thread_group_cputime: Simplify, document the "alive" check
  sched: Remove the obsolete exit_state/signal hacks
  sched: task_tick_rt: Remove the obsolete ->signal != NULL check
  sched: __sched_setscheduler: Read the RLIMIT_RTPRIO value lockless
  sched: Fix comments to make them DocBook happy
  sched: Fix fix_small_capacity
  powerpc: Exclude arch_sd_sibiling_asym_packing() on UP
  powerpc: Enable asymmetric SMT scheduling on POWER7
  sched: Add asymmetric group packing option for sibling domain
  sched: Fix capacity calculations for SMT4
  sched: Change nohz idle load balancing logic to push model
  ...

1 files changed, 25 insertions, 0 deletions

diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index e287863ac053..de6b1722cdca 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -48,6 +48,31 @@ extern ssize_t arch_cpu_release(const char *, size_t);
 #endif
 struct notifier_block;
 
+/*
+ * CPU notifier priorities.
+ */
+enum {
+        /*
+         * SCHED_ACTIVE marks a cpu which is coming up active during
+         * CPU_ONLINE and CPU_DOWN_FAILED and must be the first
+         * notifier.  CPUSET_ACTIVE adjusts cpuset according to
+         * cpu_active mask right after SCHED_ACTIVE.  During
+         * CPU_DOWN_PREPARE, SCHED_INACTIVE and CPUSET_INACTIVE are
+         * ordered in the similar way.
+         *
+         * This ordering guarantees consistent cpu_active mask and
+         * migration behavior to all cpu notifiers.
+         */
+        CPU_PRI_SCHED_ACTIVE    = INT_MAX,
+        CPU_PRI_CPUSET_ACTIVE   = INT_MAX - 1,
+        CPU_PRI_SCHED_INACTIVE  = INT_MIN + 1,
+        CPU_PRI_CPUSET_INACTIVE = INT_MIN,
+
+        /* migration should happen before other stuff but after perf */
+        CPU_PRI_PERF            = 20,
+        CPU_PRI_MIGRATION       = 10,
+};
+
 #ifdef CONFIG_SMP
 /* Need to know about CPUs going up/down? */
 #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE)