22 files changed, 67 insertions, 60 deletions

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 0e0b20b8c5db..789ec4683db3 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1845,36 +1845,43 @@ out:
 EXPORT_SYMBOL_GPL(cgroup_path);
 
 /**
- * task_cgroup_path_from_hierarchy - cgroup path of a task on a hierarchy
+ * task_cgroup_path - cgroup path of a task in the first cgroup hierarchy
  * @task: target task
- * @hierarchy_id: the hierarchy to look up @task's cgroup from
  * @buf: the buffer to write the path into
  * @buflen: the length of the buffer
  *
- * Determine @task's cgroup on the hierarchy specified by @hierarchy_id and
- * copy its path into @buf.  This function grabs cgroup_mutex and shouldn't
- * be used inside locks used by cgroup controller callbacks.
+ * Determine @task's cgroup on the first (the one with the lowest non-zero
+ * hierarchy_id) cgroup hierarchy and copy its path into @buf.  This
+ * function grabs cgroup_mutex and shouldn't be used inside locks used by
+ * cgroup controller callbacks.
+ *
+ * Returns 0 on success, fails with -%ENAMETOOLONG if @buflen is too short.
  */
-int task_cgroup_path_from_hierarchy(struct task_struct *task, int hierarchy_id,
-				    char *buf, size_t buflen)
+int task_cgroup_path(struct task_struct *task, char *buf, size_t buflen)
 {
 	struct cgroupfs_root *root;
-	struct cgroup *cgrp = NULL;
-	int ret = -ENOENT;
+	struct cgroup *cgrp;
+	int hierarchy_id = 1, ret = 0;
+
+	if (buflen < 2)
+		return -ENAMETOOLONG;
 
 	mutex_lock(&cgroup_mutex);
 
-	root = idr_find(&cgroup_hierarchy_idr, hierarchy_id);
+	root = idr_get_next(&cgroup_hierarchy_idr, &hierarchy_id);
+
 	if (root) {
 		cgrp = task_cgroup_from_root(task, root);
 		ret = cgroup_path(cgrp, buf, buflen);
+	} else {
+		/* if no hierarchy exists, everyone is in "/" */
+		memcpy(buf, "/", 2);
 	}
 
 	mutex_unlock(&cgroup_mutex);
-
 	return ret;
 }
-EXPORT_SYMBOL_GPL(task_cgroup_path_from_hierarchy);
+EXPORT_SYMBOL_GPL(task_cgroup_path);
 
 /*
  * Control Group taskset
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 198a38883e64..b2b227b82123 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -366,7 +366,7 @@ EXPORT_SYMBOL(cpu_down);
 #endif /*CONFIG_HOTPLUG_CPU*/
 
 /* Requires cpu_add_remove_lock to be held */
-static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen)
+static int _cpu_up(unsigned int cpu, int tasks_frozen)
 {
 	int ret, nr_calls = 0;
 	void *hcpu = (void *)(long)cpu;
@@ -419,7 +419,7 @@ out:
 	return ret;
 }
 
-int __cpuinit cpu_up(unsigned int cpu)
+int cpu_up(unsigned int cpu)
 {
 	int err = 0;
 
@@ -618,7 +618,7 @@ core_initcall(cpu_hotplug_pm_sync_init);
  * 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 __cpuinit notify_cpu_starting(unsigned int cpu)
+void notify_cpu_starting(unsigned int cpu)
 {
 	unsigned long val = CPU_STARTING;
 
diff --git a/kernel/events/core.c b/kernel/events/core.c
index eba8fb5834ae..f86599e8c123 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -6234,8 +6234,6 @@ perf_event_mux_interval_ms_store(struct device *dev,
 	return count;
 }
 
-#define __ATTR_RW(attr) __ATTR(attr, 0644, attr##_show, attr##_store)
-
 static struct device_attribute pmu_dev_attrs[] = {
 	__ATTR_RO(type),
 	__ATTR_RW(perf_event_mux_interval_ms),
@@ -7630,7 +7628,7 @@ static void __init perf_event_init_all_cpus(void)
 	}
 }
 
-static void __cpuinit perf_event_init_cpu(int cpu)
+static void perf_event_init_cpu(int cpu)
 {
 	struct swevent_htable *swhash = &per_cpu(swevent_htable, cpu);
 
@@ -7719,7 +7717,7 @@ static struct notifier_block perf_reboot_notifier = {
 	.priority = INT_MIN,
 };
 
-static int __cpuinit
+static int
 perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (long)hcpu;
diff --git a/kernel/fork.c b/kernel/fork.c
index 66635c80a813..403d2bb8a968 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1546,7 +1546,7 @@ static inline void init_idle_pids(struct pid_link *links)
 	}
 }
 
-struct task_struct * __cpuinit fork_idle(int cpu)
+struct task_struct *fork_idle(int cpu)
 {
 	struct task_struct *task;
 	task = copy_process(CLONE_VM, 0, 0, NULL, &init_struct_pid, 0);
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index f0f4fe29cd21..383319bae3f7 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1659,7 +1659,7 @@ SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp,
 /*
  * Functions related to boot-time initialization:
  */
-static void __cpuinit init_hrtimers_cpu(int cpu)
+static void init_hrtimers_cpu(int cpu)
 {
 	struct hrtimer_cpu_base *cpu_base = &per_cpu(hrtimer_bases, cpu);
 	int i;
@@ -1740,7 +1740,7 @@ static void migrate_hrtimers(int scpu)
 
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static int __cpuinit hrtimer_cpu_notify(struct notifier_block *self,
+static int hrtimer_cpu_notify(struct notifier_block *self,
 					unsigned long action, void *hcpu)
 {
 	int scpu = (long)hcpu;
@@ -1773,7 +1773,7 @@ static int __cpuinit hrtimer_cpu_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata hrtimers_nb = {
+static struct notifier_block hrtimers_nb = {
 	.notifier_call = hrtimer_cpu_notify,
 };
 
diff --git a/kernel/power/autosleep.c b/kernel/power/autosleep.c
index c6422ffeda9a..9012ecf7b814 100644
--- a/kernel/power/autosleep.c
+++ b/kernel/power/autosleep.c
@@ -32,7 +32,8 @@ static void try_to_suspend(struct work_struct *work)
 
 	mutex_lock(&autosleep_lock);
 
-	if (!pm_save_wakeup_count(initial_count)) {
+	if (!pm_save_wakeup_count(initial_count) ||
+		system_state != SYSTEM_RUNNING) {
 		mutex_unlock(&autosleep_lock);
 		goto out;
 	}
diff --git a/kernel/printk.c b/kernel/printk.c
index d37d45c90ae6..69b0890ed7e5 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1921,7 +1921,7 @@ void resume_console(void)
  * called when a new CPU comes online (or fails to come up), and ensures
  * that any such output gets printed.
  */
-static int __cpuinit console_cpu_notify(struct notifier_block *self,
+static int console_cpu_notify(struct notifier_block *self,
 	unsigned long action, void *hcpu)
 {
 	switch (action) {
diff --git a/kernel/profile.c b/kernel/profile.c
index 0bf400737660..6631e1ef55ab 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -331,7 +331,7 @@ out:
 	put_cpu();
 }
 
-static int __cpuinit profile_cpu_callback(struct notifier_block *info,
+static int profile_cpu_callback(struct notifier_block *info,
 					unsigned long action, void *__cpu)
 {
 	int node, cpu = (unsigned long)__cpu;
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index b1fa5510388d..f4871e52c546 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -1476,7 +1476,7 @@ rcu_torture_shutdown(void *arg)
  * Execute random CPU-hotplug operations at the interval specified
  * by the onoff_interval.
  */
-static int __cpuinit
+static int
 rcu_torture_onoff(void *arg)
 {
 	int cpu;
@@ -1558,7 +1558,7 @@ rcu_torture_onoff(void *arg)
 	return 0;
 }
 
-static int __cpuinit
+static int
 rcu_torture_onoff_init(void)
 {
 	int ret;
@@ -1601,7 +1601,7 @@ static void rcu_torture_onoff_cleanup(void)
  * CPU-stall kthread.  It waits as specified by stall_cpu_holdoff, then
  * induces a CPU stall for the time specified by stall_cpu.
  */
-static int __cpuinit rcu_torture_stall(void *args)
+static int rcu_torture_stall(void *args)
 {
 	unsigned long stop_at;
 
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index e08abb9461ac..068de3a93606 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -2910,7 +2910,7 @@ rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp)
  * can accept some slop in the rsp->completed access due to the fact
  * that this CPU cannot possibly have any RCU callbacks in flight yet.
  */
-static void __cpuinit
+static void
 rcu_init_percpu_data(int cpu, struct rcu_state *rsp, int preemptible)
 {
 	unsigned long flags;
@@ -2962,7 +2962,7 @@ rcu_init_percpu_data(int cpu, struct rcu_state *rsp, int preemptible)
 	mutex_unlock(&rsp->onoff_mutex);
 }
 
-static void __cpuinit rcu_prepare_cpu(int cpu)
+static void rcu_prepare_cpu(int cpu)
 {
 	struct rcu_state *rsp;
 
@@ -2974,7 +2974,7 @@ static void __cpuinit rcu_prepare_cpu(int cpu)
 /*
  * Handle CPU online/offline notification events.
  */
-static int __cpuinit rcu_cpu_notify(struct notifier_block *self,
+static int rcu_cpu_notify(struct notifier_block *self,
 				    unsigned long action, void *hcpu)
 {
 	long cpu = (long)hcpu;
diff --git a/kernel/rcutree.h b/kernel/rcutree.h
index 4a39d364493c..b3832581043c 100644
--- a/kernel/rcutree.h
+++ b/kernel/rcutree.h
@@ -521,10 +521,10 @@ static void invoke_rcu_callbacks_kthread(void);
 static bool rcu_is_callbacks_kthread(void);
 #ifdef CONFIG_RCU_BOOST
 static void rcu_preempt_do_callbacks(void);
-static int __cpuinit rcu_spawn_one_boost_kthread(struct rcu_state *rsp,
+static int rcu_spawn_one_boost_kthread(struct rcu_state *rsp,
 						 struct rcu_node *rnp);
 #endif /* #ifdef CONFIG_RCU_BOOST */
-static void __cpuinit rcu_prepare_kthreads(int cpu);
+static void rcu_prepare_kthreads(int cpu);
 static void rcu_cleanup_after_idle(int cpu);
 static void rcu_prepare_for_idle(int cpu);
 static void rcu_idle_count_callbacks_posted(void);
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index 63098a59216e..769e12e3151b 100644
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -1352,7 +1352,7 @@ static void rcu_preempt_boost_start_gp(struct rcu_node *rnp)
  * already exist.  We only create this kthread for preemptible RCU.
  * Returns zero if all is well, a negated errno otherwise.
  */
-static int __cpuinit rcu_spawn_one_boost_kthread(struct rcu_state *rsp,
+static int rcu_spawn_one_boost_kthread(struct rcu_state *rsp,
 						 struct rcu_node *rnp)
 {
 	int rnp_index = rnp - &rsp->node[0];
@@ -1507,7 +1507,7 @@ static int __init rcu_spawn_kthreads(void)
 }
 early_initcall(rcu_spawn_kthreads);
 
-static void __cpuinit rcu_prepare_kthreads(int cpu)
+static void rcu_prepare_kthreads(int cpu)
 {
 	struct rcu_data *rdp = per_cpu_ptr(rcu_state->rda, cpu);
 	struct rcu_node *rnp = rdp->mynode;
@@ -1549,7 +1549,7 @@ static int __init rcu_scheduler_really_started(void)
 }
 early_initcall(rcu_scheduler_really_started);
 
-static void __cpuinit rcu_prepare_kthreads(int cpu)
+static void rcu_prepare_kthreads(int cpu)
 {
 }
 
diff --git a/kernel/relay.c b/kernel/relay.c
index b91488ba2e5a..5001c9887db1 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -516,7 +516,7 @@ static void setup_callbacks(struct rchan *chan,
  *
  * 	Returns the success/failure of the operation. (%NOTIFY_OK, %NOTIFY_BAD)
  */
-static int __cpuinit relay_hotcpu_callback(struct notifier_block *nb,
+static int relay_hotcpu_callback(struct notifier_block *nb,
 				unsigned long action,
 				void *hcpu)
 {
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 0d8eb4525e76..b7c32cb7bfeb 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4133,7 +4133,7 @@ void show_state_filter(unsigned long state_filter)
 		debug_show_all_locks();
 }
 
-void __cpuinit init_idle_bootup_task(struct task_struct *idle)
+void init_idle_bootup_task(struct task_struct *idle)
 {
 	idle->sched_class = &idle_sched_class;
 }
@@ -4146,7 +4146,7 @@ void __cpuinit init_idle_bootup_task(struct task_struct *idle)
  * NOTE: this function does not set the idle thread's NEED_RESCHED
  * flag, to make booting more robust.
  */
-void __cpuinit init_idle(struct task_struct *idle, int cpu)
+void init_idle(struct task_struct *idle, int cpu)
 {
 	struct rq *rq = cpu_rq(cpu);
 	unsigned long flags;
@@ -4630,7 +4630,7 @@ static void set_rq_offline(struct rq *rq)
  * migration_call - callback that gets triggered when a CPU is added.
  * Here we can start up the necessary migration thread for the new CPU.
  */
-static int __cpuinit
+static int
 migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
 {
 	int cpu = (long)hcpu;
@@ -4684,12 +4684,12 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
  * happens before everything else.  This has to be lower priority than
  * the notifier in the perf_event subsystem, though.
  */
-static struct notifier_block __cpuinitdata migration_notifier = {
+static struct notifier_block migration_notifier = {
 	.notifier_call = migration_call,
 	.priority = CPU_PRI_MIGRATION,
 };
 
-static int __cpuinit sched_cpu_active(struct notifier_block *nfb,
+static int sched_cpu_active(struct notifier_block *nfb,
 				      unsigned long action, void *hcpu)
 {
 	switch (action & ~CPU_TASKS_FROZEN) {
@@ -4702,7 +4702,7 @@ static int __cpuinit sched_cpu_active(struct notifier_block *nfb,
 	}
 }
 
-static int __cpuinit sched_cpu_inactive(struct notifier_block *nfb,
+static int sched_cpu_inactive(struct notifier_block *nfb,
 					unsigned long action, void *hcpu)
 {
 	switch (action & ~CPU_TASKS_FROZEN) {
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index f77f9c527449..bb456f44b7b1 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5506,7 +5506,7 @@ void nohz_balance_enter_idle(int cpu)
 	set_bit(NOHZ_TICK_STOPPED, nohz_flags(cpu));
 }
 
-static int __cpuinit sched_ilb_notifier(struct notifier_block *nfb,
+static int sched_ilb_notifier(struct notifier_block *nfb,
 					unsigned long action, void *hcpu)
 {
 	switch (action & ~CPU_TASKS_FROZEN) {
diff --git a/kernel/smp.c b/kernel/smp.c
index 4dba0f7b72ad..fe9f773d7114 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -73,7 +73,7 @@ hotplug_cfd(struct notifier_block *nfb, unsigned long action, void *hcpu)
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata hotplug_cfd_notifier = {
+static struct notifier_block hotplug_cfd_notifier = {
 	.notifier_call		= hotplug_cfd,
 };
 
diff --git a/kernel/smpboot.c b/kernel/smpboot.c
index 02fc5c933673..eb89e1807408 100644
--- a/kernel/smpboot.c
+++ b/kernel/smpboot.c
@@ -24,7 +24,7 @@
  */
 static DEFINE_PER_CPU(struct task_struct *, idle_threads);
 
-struct task_struct * __cpuinit idle_thread_get(unsigned int cpu)
+struct task_struct *idle_thread_get(unsigned int cpu)
 {
 	struct task_struct *tsk = per_cpu(idle_threads, cpu);
 
diff --git a/kernel/softirq.c b/kernel/softirq.c
index ca25e6e704a2..be3d3514c325 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -699,7 +699,7 @@ void send_remote_softirq(struct call_single_data *cp, int cpu, int softirq)
 }
 EXPORT_SYMBOL(send_remote_softirq);
 
-static int __cpuinit remote_softirq_cpu_notify(struct notifier_block *self,
+static int remote_softirq_cpu_notify(struct notifier_block *self,
 					       unsigned long action, void *hcpu)
 {
 	/*
@@ -728,7 +728,7 @@ static int __cpuinit remote_softirq_cpu_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata remote_softirq_cpu_notifier = {
+static struct notifier_block remote_softirq_cpu_notifier = {
 	.notifier_call	= remote_softirq_cpu_notify,
 };
 
@@ -830,7 +830,7 @@ static void takeover_tasklets(unsigned int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static int __cpuinit cpu_callback(struct notifier_block *nfb,
+static int cpu_callback(struct notifier_block *nfb,
 				  unsigned long action,
 				  void *hcpu)
 {
@@ -845,7 +845,7 @@ static int __cpuinit cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata cpu_nfb = {
+static struct notifier_block cpu_nfb = {
 	.notifier_call = cpu_callback
 };
 
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 69601726a745..e80183f4a6c4 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -298,7 +298,7 @@ static int __init tick_nohz_full_setup(char *str)
 }
 __setup("nohz_full=", tick_nohz_full_setup);
 
-static int __cpuinit tick_nohz_cpu_down_callback(struct notifier_block *nfb,
+static int tick_nohz_cpu_down_callback(struct notifier_block *nfb,
 						 unsigned long action,
 						 void *hcpu)
 {
diff --git a/kernel/timer.c b/kernel/timer.c
index 15bc1b41021d..4296d13db3d1 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1505,11 +1505,11 @@ signed long __sched schedule_timeout_uninterruptible(signed long timeout)
 }
 EXPORT_SYMBOL(schedule_timeout_uninterruptible);
 
-static int __cpuinit init_timers_cpu(int cpu)
+static int init_timers_cpu(int cpu)
 {
 	int j;
 	struct tvec_base *base;
-	static char __cpuinitdata tvec_base_done[NR_CPUS];
+	static char tvec_base_done[NR_CPUS];
 
 	if (!tvec_base_done[cpu]) {
 		static char boot_done;
@@ -1577,7 +1577,7 @@ static void migrate_timer_list(struct tvec_base *new_base, struct list_head *hea
 	}
 }
 
-static void __cpuinit migrate_timers(int cpu)
+static void migrate_timers(int cpu)
 {
 	struct tvec_base *old_base;
 	struct tvec_base *new_base;
@@ -1610,7 +1610,7 @@ static void __cpuinit migrate_timers(int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static int __cpuinit timer_cpu_notify(struct notifier_block *self,
+static int timer_cpu_notify(struct notifier_block *self,
 				unsigned long action, void *hcpu)
 {
 	long cpu = (long)hcpu;
@@ -1635,7 +1635,7 @@ static int __cpuinit timer_cpu_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __cpuinitdata timers_nb = {
+static struct notifier_block timers_nb = {
 	.notifier_call	= timer_cpu_notify,
 };
 
diff --git a/kernel/wait.c b/kernel/wait.c
index ce0daa320a26..dec68bd4e9d8 100644
--- a/kernel/wait.c
+++ b/kernel/wait.c
@@ -333,7 +333,8 @@ int __wait_on_atomic_t(wait_queue_head_t *wq, struct wait_bit_queue *q,
 		prepare_to_wait(wq, &q->wait, mode);
 		val = q->key.flags;
 		if (atomic_read(val) == 0)
-			ret = (*action)(val);
+			break;
+		ret = (*action)(val);
 	} while (!ret && atomic_read(val) != 0);
 	finish_wait(wq, &q->wait);
 	return ret;
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index f02c4a4a0c3c..0b72e816b8d0 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -4644,7 +4644,7 @@ static void restore_unbound_workers_cpumask(struct worker_pool *pool, int cpu)
  * Workqueues should be brought up before normal priority CPU notifiers.
  * This will be registered high priority CPU notifier.
  */
-static int __cpuinit workqueue_cpu_up_callback(struct notifier_block *nfb,
+static int workqueue_cpu_up_callback(struct notifier_block *nfb,
 					       unsigned long action,
 					       void *hcpu)
 {
@@ -4697,7 +4697,7 @@ static int __cpuinit workqueue_cpu_up_callback(struct notifier_block *nfb,
  * Workqueues should be brought down after normal priority CPU notifiers.
  * This will be registered as low priority CPU notifier.
  */
-static int __cpuinit workqueue_cpu_down_callback(struct notifier_block *nfb,
+static int workqueue_cpu_down_callback(struct notifier_block *nfb,
 						 unsigned long action,
 						 void *hcpu)
 {