28 files changed, 443 insertions, 316 deletions

diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 3a5ca582ba1e..ed206fd88cca 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -250,7 +250,6 @@ static void untag_chunk(struct node *p)
 		spin_unlock(&hash_lock);
 		spin_unlock(&entry->lock);
 		fsnotify_destroy_mark(entry);
-		fsnotify_put_mark(entry);
 		goto out;
 	}
 
@@ -259,7 +258,7 @@ static void untag_chunk(struct node *p)
 
 	fsnotify_duplicate_mark(&new->mark, entry);
 	if (fsnotify_add_mark(&new->mark, new->mark.group, new->mark.i.inode, NULL, 1)) {
-		free_chunk(new);
+		fsnotify_put_mark(&new->mark);
 		goto Fallback;
 	}
 
@@ -293,7 +292,7 @@ static void untag_chunk(struct node *p)
 	spin_unlock(&hash_lock);
 	spin_unlock(&entry->lock);
 	fsnotify_destroy_mark(entry);
-	fsnotify_put_mark(entry);
+	fsnotify_put_mark(&new->mark);	/* drop initial reference */
 	goto out;
 
 Fallback:
@@ -322,7 +321,7 @@ static int create_chunk(struct inode *inode, struct audit_tree *tree)
 
 	entry = &chunk->mark;
 	if (fsnotify_add_mark(entry, audit_tree_group, inode, NULL, 0)) {
-		free_chunk(chunk);
+		fsnotify_put_mark(entry);
 		return -ENOSPC;
 	}
 
@@ -347,6 +346,7 @@ static int create_chunk(struct inode *inode, struct audit_tree *tree)
 	insert_hash(chunk);
 	spin_unlock(&hash_lock);
 	spin_unlock(&entry->lock);
+	fsnotify_put_mark(entry);	/* drop initial reference */
 	return 0;
 }
 
@@ -396,7 +396,7 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
 	fsnotify_duplicate_mark(chunk_entry, old_entry);
 	if (fsnotify_add_mark(chunk_entry, chunk_entry->group, chunk_entry->i.inode, NULL, 1)) {
 		spin_unlock(&old_entry->lock);
-		free_chunk(chunk);
+		fsnotify_put_mark(chunk_entry);
 		fsnotify_put_mark(old_entry);
 		return -ENOSPC;
 	}
@@ -444,8 +444,8 @@ static int tag_chunk(struct inode *inode, struct audit_tree *tree)
 	spin_unlock(&chunk_entry->lock);
 	spin_unlock(&old_entry->lock);
 	fsnotify_destroy_mark(old_entry);
+	fsnotify_put_mark(chunk_entry);	/* drop initial reference */
 	fsnotify_put_mark(old_entry); /* pair to fsnotify_find mark_entry */
-	fsnotify_put_mark(old_entry); /* and kill it */
 	return 0;
 }
 
@@ -916,7 +916,12 @@ static void audit_tree_freeing_mark(struct fsnotify_mark *entry, struct fsnotify
 	struct audit_chunk *chunk = container_of(entry, struct audit_chunk, mark);
 
 	evict_chunk(chunk);
-	fsnotify_put_mark(entry);
+
+	/*
+	 * We are guaranteed to have at least one reference to the mark from
+	 * either the inode or the caller of fsnotify_destroy_mark().
+	 */
+	BUG_ON(atomic_read(&entry->refcnt) < 1);
 }
 
 static bool audit_tree_send_event(struct fsnotify_group *group, struct inode *inode,
diff --git a/kernel/debug/kdb/kdb_debugger.c b/kernel/debug/kdb/kdb_debugger.c
index 8b68ce78ff17..be7b33b73d30 100644
--- a/kernel/debug/kdb/kdb_debugger.c
+++ b/kernel/debug/kdb/kdb_debugger.c
@@ -12,6 +12,7 @@
 #include <linux/kdb.h>
 #include <linux/kdebug.h>
 #include <linux/export.h>
+#include <linux/hardirq.h>
 #include "kdb_private.h"
 #include "../debug_core.h"
 
@@ -52,6 +53,9 @@ int kdb_stub(struct kgdb_state *ks)
 	if (atomic_read(&kgdb_setting_breakpoint))
 		reason = KDB_REASON_KEYBOARD;
 
+	if (in_nmi())
+		reason = KDB_REASON_NMI;
+
 	for (i = 0, bp = kdb_breakpoints; i < KDB_MAXBPT; i++, bp++) {
 		if ((bp->bp_enabled) && (bp->bp_addr == addr)) {
 			reason = KDB_REASON_BREAK;
diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index bb9520f0f6ff..0a69d2adc4f3 100644
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -715,9 +715,6 @@ kdb_printit:
 	/* check for having reached the LINES number of printed lines */
 	if (kdb_nextline == linecount) {
 		char buf1[16] = "";
-#if defined(CONFIG_SMP)
-		char buf2[32];
-#endif
 
 		/* Watch out for recursion here.  Any routine that calls
 		 * kdb_printf will come back through here.  And kdb_read
@@ -732,14 +729,6 @@ kdb_printit:
 		if (moreprompt == NULL)
 			moreprompt = "more> ";
 
-#if defined(CONFIG_SMP)
-		if (strchr(moreprompt, '%')) {
-			sprintf(buf2, moreprompt, get_cpu());
-			put_cpu();
-			moreprompt = buf2;
-		}
-#endif
-
 		kdb_input_flush();
 		c = console_drivers;
 
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 1f91413edb87..31df1706b9a9 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -139,11 +139,10 @@ static const int __nkdb_err = sizeof(kdbmsgs) / sizeof(kdbmsg_t);
 static char *__env[] = {
 #if defined(CONFIG_SMP)
  "PROMPT=[%d]kdb> ",
- "MOREPROMPT=[%d]more> ",
 #else
  "PROMPT=kdb> ",
- "MOREPROMPT=more> ",
 #endif
+ "MOREPROMPT=more> ",
  "RADIX=16",
  "MDCOUNT=8",			/* lines of md output */
  KDB_PLATFORM_ENV,
@@ -1236,18 +1235,6 @@ static int kdb_local(kdb_reason_t reason, int error, struct pt_regs *regs,
 		*cmdbuf = '\0';
 		*(cmd_hist[cmd_head]) = '\0';
 
-		if (KDB_FLAG(ONLY_DO_DUMP)) {
-			/* kdb is off but a catastrophic error requires a dump.
-			 * Take the dump and reboot.
-			 * Turn on logging so the kdb output appears in the log
-			 * buffer in the dump.
-			 */
-			const char *setargs[] = { "set", "LOGGING", "1" };
-			kdb_set(2, setargs);
-			kdb_reboot(0, NULL);
-			/*NOTREACHED*/
-		}
-
 do_full_getstr:
 #if defined(CONFIG_SMP)
 		snprintf(kdb_prompt_str, CMD_BUFLEN, kdbgetenv("PROMPT"),
diff --git a/kernel/events/callchain.c b/kernel/events/callchain.c
index 6581a040f399..98d4597f43d6 100644
--- a/kernel/events/callchain.c
+++ b/kernel/events/callchain.c
@@ -153,7 +153,8 @@ put_callchain_entry(int rctx)
 	put_recursion_context(__get_cpu_var(callchain_recursion), rctx);
 }
 
-struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
+struct perf_callchain_entry *
+perf_callchain(struct perf_event *event, struct pt_regs *regs)
 {
 	int rctx;
 	struct perf_callchain_entry *entry;
@@ -178,6 +179,12 @@ struct perf_callchain_entry *perf_callchain(struct pt_regs *regs)
 	}
 
 	if (regs) {
+		/*
+		 * Disallow cross-task user callchains.
+		 */
+		if (event->ctx->task && event->ctx->task != current)
+			goto exit_put;
+
 		perf_callchain_store(entry, PERF_CONTEXT_USER);
 		perf_callchain_user(entry, regs);
 	}
diff --git a/kernel/events/core.c b/kernel/events/core.c
index f1cf0edeb39a..b7935fcec7d9 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4039,7 +4039,7 @@ void perf_prepare_sample(struct perf_event_header *header,
 	if (sample_type & PERF_SAMPLE_CALLCHAIN) {
 		int size = 1;
 
-		data->callchain = perf_callchain(regs);
+		data->callchain = perf_callchain(event, regs);
 
 		if (data->callchain)
 			size += data->callchain->nr;
@@ -5209,7 +5209,8 @@ static int perf_tp_event_match(struct perf_event *event,
 }
 
 void perf_tp_event(u64 addr, u64 count, void *record, int entry_size,
-		   struct pt_regs *regs, struct hlist_head *head, int rctx)
+		   struct pt_regs *regs, struct hlist_head *head, int rctx,
+		   struct task_struct *task)
 {
 	struct perf_sample_data data;
 	struct perf_event *event;
@@ -5228,6 +5229,31 @@ void perf_tp_event(u64 addr, u64 count, void *record, int entry_size,
 			perf_swevent_event(event, count, &data, regs);
 	}
 
+	/*
+	 * If we got specified a target task, also iterate its context and
+	 * deliver this event there too.
+	 */
+	if (task && task != current) {
+		struct perf_event_context *ctx;
+		struct trace_entry *entry = record;
+
+		rcu_read_lock();
+		ctx = rcu_dereference(task->perf_event_ctxp[perf_sw_context]);
+		if (!ctx)
+			goto unlock;
+
+		list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+			if (event->attr.type != PERF_TYPE_TRACEPOINT)
+				continue;
+			if (event->attr.config != entry->type)
+				continue;
+			if (perf_tp_event_match(event, &data, regs))
+				perf_swevent_event(event, count, &data, regs);
+		}
+unlock:
+		rcu_read_unlock();
+	}
+
 	perf_swevent_put_recursion_context(rctx);
 }
 EXPORT_SYMBOL_GPL(perf_tp_event);
diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index b0b107f90afc..a096c19f2c2a 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -101,7 +101,8 @@ __output_copy(struct perf_output_handle *handle,
 }
 
 /* Callchain handling */
-extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs);
+extern struct perf_callchain_entry *
+perf_callchain(struct perf_event *event, struct pt_regs *regs);
 extern int get_callchain_buffers(void);
 extern void put_callchain_buffers(void);
 
diff --git a/kernel/fork.c b/kernel/fork.c
index 3bd2280d79f6..2c8857e12855 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -455,8 +455,8 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
 		if (retval)
 			goto out;
 
-		if (file && uprobe_mmap(tmp))
-			goto out;
+		if (file)
+			uprobe_mmap(tmp);
 	}
 	/* a new mm has just been created */
 	arch_dup_mmap(oldmm, mm);
diff --git a/kernel/futex.c b/kernel/futex.c
index e2b0fb9a0b3b..3717e7b306e0 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2231,11 +2231,11 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
  * @uaddr2:	the pi futex we will take prior to returning to user-space
  *
  * The caller will wait on uaddr and will be requeued by futex_requeue() to
- * uaddr2 which must be PI aware.  Normal wakeup will wake on uaddr2 and
- * complete the acquisition of the rt_mutex prior to returning to userspace.
- * This ensures the rt_mutex maintains an owner when it has waiters; without
- * one, the pi logic wouldn't know which task to boost/deboost, if there was a
- * need to.
+ * uaddr2 which must be PI aware and unique from uaddr.  Normal wakeup will wake
+ * on uaddr2 and complete the acquisition of the rt_mutex prior to returning to
+ * userspace.  This ensures the rt_mutex maintains an owner when it has waiters;
+ * without one, the pi logic would not know which task to boost/deboost, if
+ * there was a need to.
  *
  * We call schedule in futex_wait_queue_me() when we enqueue and return there
  * via the following:
@@ -2272,6 +2272,9 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
 	struct futex_q q = futex_q_init;
 	int res, ret;
 
+	if (uaddr == uaddr2)
+		return -EINVAL;
+
 	if (!bitset)
 		return -EINVAL;
 
@@ -2343,7 +2346,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
 		 * signal.  futex_unlock_pi() will not destroy the lock_ptr nor
 		 * the pi_state.
 		 */
-		WARN_ON(!&q.pi_state);
+		WARN_ON(!q.pi_state);
 		pi_mutex = &q.pi_state->pi_mutex;
 		ret = rt_mutex_finish_proxy_lock(pi_mutex, to, &rt_waiter, 1);
 		debug_rt_mutex_free_waiter(&rt_waiter);
@@ -2370,7 +2373,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
 	 * fault, unlock the rt_mutex and return the fault to userspace.
 	 */
 	if (ret == -EFAULT) {
-		if (rt_mutex_owner(pi_mutex) == current)
+		if (pi_mutex && rt_mutex_owner(pi_mutex) == current)
 			rt_mutex_unlock(pi_mutex);
 	} else if (ret == -EINTR) {
 		/*
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 0a8e8f059627..4c69326aa773 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -944,6 +944,18 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 	}
 
 	/*
+	 * Drivers are often written to work w/o knowledge about the
+	 * underlying irq chip implementation, so a request for a
+	 * threaded irq without a primary hard irq context handler
+	 * requires the ONESHOT flag to be set. Some irq chips like
+	 * MSI based interrupts are per se one shot safe. Check the
+	 * chip flags, so we can avoid the unmask dance at the end of
+	 * the threaded handler for those.
+	 */
+	if (desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)
+		new->flags &= ~IRQF_ONESHOT;
+
+	/*
 	 * The following block of code has to be executed atomically
 	 */
 	raw_spin_lock_irqsave(&desc->lock, flags);
@@ -1017,7 +1029,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 		 */
 		new->thread_mask = 1 << ffz(thread_mask);
 
-	} else if (new->handler == irq_default_primary_handler) {
+	} else if (new->handler == irq_default_primary_handler &&
+		   !(desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)) {
 		/*
 		 * The interrupt was requested with handler = NULL, so
 		 * we use the default primary handler for it. But it
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 1da39ea248fd..c8b7446b27df 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -178,9 +178,6 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)
 	arch_suspend_enable_irqs();
 	BUG_ON(irqs_disabled());
 
-	/* Kick the lockup detector */
-	lockup_detector_bootcpu_resume();
-
  Enable_cpus:
 	enable_nonboot_cpus();
 
diff --git a/kernel/printk.c b/kernel/printk.c
index 6a76ab9d4476..66a2ea37b576 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1034,6 +1034,7 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
 			struct log *msg = log_from_idx(idx);
 
 			len += msg_print_text(msg, prev, true, NULL, 0);
+			prev = msg->flags;
 			idx = log_next(idx);
 			seq++;
 		}
@@ -1046,6 +1047,7 @@ static int syslog_print_all(char __user *buf, int size, bool clear)
 			struct log *msg = log_from_idx(idx);
 
 			len -= msg_print_text(msg, prev, true, NULL, 0);
+			prev = msg->flags;
 			idx = log_next(idx);
 			seq++;
 		}
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index d325c4b2dcbb..fbf1fd098dc6 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3142,6 +3142,20 @@ void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st)
 # define nsecs_to_cputime(__nsecs)	nsecs_to_jiffies(__nsecs)
 #endif
 
+static cputime_t scale_utime(cputime_t utime, cputime_t rtime, cputime_t total)
+{
+	u64 temp = (__force u64) rtime;
+
+	temp *= (__force u64) utime;
+
+	if (sizeof(cputime_t) == 4)
+		temp = div_u64(temp, (__force u32) total);
+	else
+		temp = div64_u64(temp, (__force u64) total);
+
+	return (__force cputime_t) temp;
+}
+
 void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st)
 {
 	cputime_t rtime, utime = p->utime, total = utime + p->stime;
@@ -3151,13 +3165,9 @@ void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st)
 	 */
 	rtime = nsecs_to_cputime(p->se.sum_exec_runtime);
 
-	if (total) {
-		u64 temp = (__force u64) rtime;
-
-		temp *= (__force u64) utime;
-		do_div(temp, (__force u32) total);
-		utime = (__force cputime_t) temp;
-	} else
+	if (total)
+		utime = scale_utime(utime, rtime, total);
+	else
 		utime = rtime;
 
 	/*
@@ -3184,13 +3194,9 @@ void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st)
 	total = cputime.utime + cputime.stime;
 	rtime = nsecs_to_cputime(cputime.sum_exec_runtime);
 
-	if (total) {
-		u64 temp = (__force u64) rtime;
-
-		temp *= (__force u64) cputime.utime;
-		do_div(temp, (__force u32) total);
-		utime = (__force cputime_t) temp;
-	} else
+	if (total)
+		utime = scale_utime(cputime.utime, rtime, total);
+	else
 		utime = rtime;
 
 	sig->prev_utime = max(sig->prev_utime, utime);
@@ -4340,9 +4346,7 @@ recheck:
 	 */
 	if (unlikely(policy == p->policy && (!rt_policy(policy) ||
 			param->sched_priority == p->rt_priority))) {
-
-		__task_rq_unlock(rq);
-		raw_spin_unlock_irqrestore(&p->pi_lock, flags);
+		task_rq_unlock(rq, p, &flags);
 		return 0;
 	}
 
@@ -7248,6 +7252,7 @@ int in_sched_functions(unsigned long addr)
 
 #ifdef CONFIG_CGROUP_SCHED
 struct task_group root_task_group;
+LIST_HEAD(task_groups);
 #endif
 
 DECLARE_PER_CPU(cpumask_var_t, load_balance_tmpmask);
diff --git a/kernel/sched/cpupri.c b/kernel/sched/cpupri.c
index d72586fdf660..23aa789c53ee 100644
--- a/kernel/sched/cpupri.c
+++ b/kernel/sched/cpupri.c
@@ -65,8 +65,8 @@ static int convert_prio(int prio)
 int cpupri_find(struct cpupri *cp, struct task_struct *p,
 		struct cpumask *lowest_mask)
 {
-	int                  idx      = 0;
-	int                  task_pri = convert_prio(p->prio);
+	int idx = 0;
+	int task_pri = convert_prio(p->prio);
 
 	if (task_pri >= MAX_RT_PRIO)
 		return 0;
@@ -137,9 +137,9 @@ int cpupri_find(struct cpupri *cp, struct task_struct *p,
  */
 void cpupri_set(struct cpupri *cp, int cpu, int newpri)
 {
-	int                 *currpri = &cp->cpu_to_pri[cpu];
-	int                  oldpri  = *currpri;
-	int                  do_mb = 0;
+	int *currpri = &cp->cpu_to_pri[cpu];
+	int oldpri = *currpri;
+	int do_mb = 0;
 
 	newpri = convert_prio(newpri);
 
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 22321db64952..c219bf8d704c 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -3069,6 +3069,9 @@ struct lb_env {
 	int			new_dst_cpu;
 	enum cpu_idle_type	idle;
 	long			imbalance;
+	/* The set of CPUs under consideration for load-balancing */
+	struct cpumask		*cpus;
+
 	unsigned int		flags;
 
 	unsigned int		loop;
@@ -3384,6 +3387,14 @@ static int tg_load_down(struct task_group *tg, void *data)
 
 static void update_h_load(long cpu)
 {
+	struct rq *rq = cpu_rq(cpu);
+	unsigned long now = jiffies;
+
+	if (rq->h_load_throttle == now)
+		return;
+
+	rq->h_load_throttle = now;
+
 	rcu_read_lock();
 	walk_tg_tree(tg_load_down, tg_nop, (void *)cpu);
 	rcu_read_unlock();
@@ -3653,8 +3664,7 @@ fix_small_capacity(struct sched_domain *sd, struct sched_group *group)
  */
 static inline void update_sg_lb_stats(struct lb_env *env,
 			struct sched_group *group, int load_idx,
-			int local_group, const struct cpumask *cpus,
-			int *balance, struct sg_lb_stats *sgs)
+			int local_group, int *balance, struct sg_lb_stats *sgs)
 {
 	unsigned long nr_running, max_nr_running, min_nr_running;
 	unsigned long load, max_cpu_load, min_cpu_load;
@@ -3671,7 +3681,7 @@ static inline void update_sg_lb_stats(struct lb_env *env,
 	max_nr_running = 0;
 	min_nr_running = ~0UL;
 
-	for_each_cpu_and(i, sched_group_cpus(group), cpus) {
+	for_each_cpu_and(i, sched_group_cpus(group), env->cpus) {
 		struct rq *rq = cpu_rq(i);
 
 		nr_running = rq->nr_running;
@@ -3800,8 +3810,7 @@ static bool update_sd_pick_busiest(struct lb_env *env,
  * @sds: variable to hold the statistics for this sched_domain.
  */
 static inline void update_sd_lb_stats(struct lb_env *env,
-				      const struct cpumask *cpus,
-				      int *balance, struct sd_lb_stats *sds)
+					int *balance, struct sd_lb_stats *sds)
 {
 	struct sched_domain *child = env->sd->child;
 	struct sched_group *sg = env->sd->groups;
@@ -3818,8 +3827,7 @@ static inline void update_sd_lb_stats(struct lb_env *env,
 
 		local_group = cpumask_test_cpu(env->dst_cpu, sched_group_cpus(sg));
 		memset(&sgs, 0, sizeof(sgs));
-		update_sg_lb_stats(env, sg, load_idx, local_group,
-				   cpus, balance, &sgs);
+		update_sg_lb_stats(env, sg, load_idx, local_group, balance, &sgs);
 
 		if (local_group && !(*balance))
 			return;
@@ -4055,7 +4063,6 @@ static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *s
  * to restore balance.
  *
  * @env: The load balancing environment.
- * @cpus: The set of CPUs under consideration for load-balancing.
  * @balance: Pointer to a variable indicating if this_cpu
  *	is the appropriate cpu to perform load balancing at this_level.
  *
@@ -4065,7 +4072,7 @@ static inline void calculate_imbalance(struct lb_env *env, struct sd_lb_stats *s
  *		   put to idle by rebalancing its tasks onto our group.
  */
 static struct sched_group *
-find_busiest_group(struct lb_env *env, const struct cpumask *cpus, int *balance)
+find_busiest_group(struct lb_env *env, int *balance)
 {
 	struct sd_lb_stats sds;
 
@@ -4075,7 +4082,7 @@ find_busiest_group(struct lb_env *env, const struct cpumask *cpus, int *balance)
 	 * Compute the various statistics relavent for load balancing at
 	 * this level.
 	 */
-	update_sd_lb_stats(env, cpus, balance, &sds);
+	update_sd_lb_stats(env, balance, &sds);
 
 	/*
 	 * this_cpu is not the appropriate cpu to perform load balancing at
@@ -4155,8 +4162,7 @@ ret:
  * find_busiest_queue - find the busiest runqueue among the cpus in group.
  */
 static struct rq *find_busiest_queue(struct lb_env *env,
-				     struct sched_group *group,
-				     const struct cpumask *cpus)
+				     struct sched_group *group)
 {
 	struct rq *busiest = NULL, *rq;
 	unsigned long max_load = 0;
@@ -4171,7 +4177,7 @@ static struct rq *find_busiest_queue(struct lb_env *env,
 		if (!capacity)
 			capacity = fix_small_capacity(env->sd, group);
 
-		if (!cpumask_test_cpu(i, cpus))
+		if (!cpumask_test_cpu(i, env->cpus))
 			continue;
 
 		rq = cpu_rq(i);
@@ -4252,6 +4258,7 @@ static int load_balance(int this_cpu, struct rq *this_rq,
 		.dst_grpmask    = sched_group_cpus(sd->groups),
 		.idle		= idle,
 		.loop_break	= sched_nr_migrate_break,
+		.cpus		= cpus,
 	};
 
 	cpumask_copy(cpus, cpu_active_mask);
@@ -4260,7 +4267,7 @@ static int load_balance(int this_cpu, struct rq *this_rq,
 	schedstat_inc(sd, lb_count[idle]);
 
 redo:
-	group = find_busiest_group(&env, cpus, balance);
+	group = find_busiest_group(&env, balance);
 
 	if (*balance == 0)
 		goto out_balanced;
@@ -4270,7 +4277,7 @@ redo:
 		goto out_balanced;
 	}
 
-	busiest = find_busiest_queue(&env, group, cpus);
+	busiest = find_busiest_queue(&env, group);
 	if (!busiest) {
 		schedstat_inc(sd, lb_nobusyq[idle]);
 		goto out_balanced;
@@ -4294,11 +4301,10 @@ redo:
 		env.src_rq    = busiest;
 		env.loop_max  = min(sysctl_sched_nr_migrate, busiest->nr_running);
 
+		update_h_load(env.src_cpu);
 more_balance:
 		local_irq_save(flags);
 		double_rq_lock(this_rq, busiest);
-		if (!env.loop)
-			update_h_load(env.src_cpu);
 
 		/*
 		 * cur_ld_moved - load moved in current iteration
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 573e1ca01102..944cb68420e9 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -788,6 +788,19 @@ static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)
 	const struct cpumask *span;
 
 	span = sched_rt_period_mask();
+#ifdef CONFIG_RT_GROUP_SCHED
+	/*
+	 * FIXME: isolated CPUs should really leave the root task group,
+	 * whether they are isolcpus or were isolated via cpusets, lest
+	 * the timer run on a CPU which does not service all runqueues,
+	 * potentially leaving other CPUs indefinitely throttled.  If
+	 * isolation is really required, the user will turn the throttle
+	 * off to kill the perturbations it causes anyway.  Meanwhile,
+	 * this maintains functionality for boot and/or troubleshooting.
+	 */
+	if (rt_b == &root_task_group.rt_bandwidth)
+		span = cpu_online_mask;
+#endif
 	for_each_cpu(i, span) {
 		int enqueue = 0;
 		struct rt_rq *rt_rq = sched_rt_period_rt_rq(rt_b, i);
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index c35a1a7dd4d6..f6714d009e77 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -80,7 +80,7 @@ extern struct mutex sched_domains_mutex;
 struct cfs_rq;
 struct rt_rq;
 
-static LIST_HEAD(task_groups);
+extern struct list_head task_groups;
 
 struct cfs_bandwidth {
 #ifdef CONFIG_CFS_BANDWIDTH
@@ -374,7 +374,11 @@ struct rq {
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	/* list of leaf cfs_rq on this cpu: */
 	struct list_head leaf_cfs_rq_list;
-#endif
+#ifdef CONFIG_SMP
+	unsigned long h_load_throttle;
+#endif /* CONFIG_SMP */
+#endif /* CONFIG_FAIR_GROUP_SCHED */
+
 #ifdef CONFIG_RT_GROUP_SCHED
 	struct list_head leaf_rt_rq_list;
 #endif
diff --git a/kernel/sched/stop_task.c b/kernel/sched/stop_task.c
index 7b386e86fd23..da5eb5bed84a 100644
--- a/kernel/sched/stop_task.c
+++ b/kernel/sched/stop_task.c
@@ -27,8 +27,10 @@ static struct task_struct *pick_next_task_stop(struct rq *rq)
 {
 	struct task_struct *stop = rq->stop;
 
-	if (stop && stop->on_rq)
+	if (stop && stop->on_rq) {
+		stop->se.exec_start = rq->clock_task;
 		return stop;
+	}
 
 	return NULL;
 }
@@ -52,6 +54,21 @@ static void yield_task_stop(struct rq *rq)
 
 static void put_prev_task_stop(struct rq *rq, struct task_struct *prev)
 {
+	struct task_struct *curr = rq->curr;
+	u64 delta_exec;
+
+	delta_exec = rq->clock_task - curr->se.exec_start;
+	if (unlikely((s64)delta_exec < 0))
+		delta_exec = 0;
+
+	schedstat_set(curr->se.statistics.exec_max,
+			max(curr->se.statistics.exec_max, delta_exec));
+
+	curr->se.sum_exec_runtime += delta_exec;
+	account_group_exec_runtime(curr, delta_exec);
+
+	curr->se.exec_start = rq->clock_task;
+	cpuacct_charge(curr, delta_exec);
 }
 
 static void task_tick_stop(struct rq *rq, struct task_struct *curr, int queued)
@@ -60,6 +77,9 @@ static void task_tick_stop(struct rq *rq, struct task_struct *curr, int queued)
 
 static void set_curr_task_stop(struct rq *rq)
 {
+	struct task_struct *stop = rq->stop;
+
+	stop->se.exec_start = rq->clock_task;
 }
 
 static void switched_to_stop(struct rq *rq, struct task_struct *p)
diff --git a/kernel/task_work.c b/kernel/task_work.c
index 91d4e1742a0c..d320d44903bd 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -75,6 +75,7 @@ void task_work_run(void)
 			p = q->next;
 			q->func(q);
 			q = p;
+			cond_resched();
 		}
 	}
 }
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index a470154e0408..46da0537c10b 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -37,7 +37,7 @@
  * requested HZ value. It is also not recommended
  * for "tick-less" systems.
  */
-#define NSEC_PER_JIFFY	((u32)((((u64)NSEC_PER_SEC)<<8)/ACTHZ))
+#define NSEC_PER_JIFFY	((u32)((((u64)NSEC_PER_SEC)<<8)/SHIFTED_HZ))
 
 /* Since jiffies uses a simple NSEC_PER_JIFFY multiplier
  * conversion, the .shift value could be zero. However
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index b7fbadc5c973..24174b4d669b 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -28,7 +28,7 @@ DEFINE_SPINLOCK(ntp_lock);
 /* USER_HZ period (usecs): */
 unsigned long			tick_usec = TICK_USEC;
 
-/* ACTHZ period (nsecs): */
+/* SHIFTED_HZ period (nsecs): */
 unsigned long			tick_nsec;
 
 static u64			tick_length;
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index f045cc50832d..34e5eac81424 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -65,14 +65,14 @@ struct timekeeper {
 	 * used instead.
 	 */
 	struct timespec		wall_to_monotonic;
-	/* time spent in suspend */
-	struct timespec		total_sleep_time;
-	/* The raw monotonic time for the CLOCK_MONOTONIC_RAW posix clock. */
-	struct timespec		raw_time;
 	/* Offset clock monotonic -> clock realtime */
 	ktime_t			offs_real;
+	/* time spent in suspend */
+	struct timespec		total_sleep_time;
 	/* Offset clock monotonic -> clock boottime */
 	ktime_t			offs_boot;
+	/* The raw monotonic time for the CLOCK_MONOTONIC_RAW posix clock. */
+	struct timespec		raw_time;
 	/* Seqlock for all timekeeper values */
 	seqlock_t		lock;
 };
@@ -108,13 +108,39 @@ static struct timespec tk_xtime(struct timekeeper *tk)
 static void tk_set_xtime(struct timekeeper *tk, const struct timespec *ts)
 {
 	tk->xtime_sec = ts->tv_sec;
-	tk->xtime_nsec = ts->tv_nsec << tk->shift;
+	tk->xtime_nsec = (u64)ts->tv_nsec << tk->shift;
 }
 
 static void tk_xtime_add(struct timekeeper *tk, const struct timespec *ts)
 {
 	tk->xtime_sec += ts->tv_sec;
-	tk->xtime_nsec += ts->tv_nsec << tk->shift;
+	tk->xtime_nsec += (u64)ts->tv_nsec << tk->shift;
+	tk_normalize_xtime(tk);
+}
+
+static void tk_set_wall_to_mono(struct timekeeper *tk, struct timespec wtm)
+{
+	struct timespec tmp;
+
+	/*
+	 * Verify consistency of: offset_real = -wall_to_monotonic
+	 * before modifying anything
+	 */
+	set_normalized_timespec(&tmp, -tk->wall_to_monotonic.tv_sec,
+					-tk->wall_to_monotonic.tv_nsec);
+	WARN_ON_ONCE(tk->offs_real.tv64 != timespec_to_ktime(tmp).tv64);
+	tk->wall_to_monotonic = wtm;
+	set_normalized_timespec(&tmp, -wtm.tv_sec, -wtm.tv_nsec);
+	tk->offs_real = timespec_to_ktime(tmp);
+}
+
+static void tk_set_sleep_time(struct timekeeper *tk, struct timespec t)
+{
+	/* Verify consistency before modifying */
+	WARN_ON_ONCE(tk->offs_boot.tv64 != timespec_to_ktime(tk->total_sleep_time).tv64);
+
+	tk->total_sleep_time	= t;
+	tk->offs_boot		= timespec_to_ktime(t);
 }
 
 /**
@@ -217,14 +243,6 @@ static inline s64 timekeeping_get_ns_raw(struct timekeeper *tk)
 	return nsec + arch_gettimeoffset();
 }
 
-static void update_rt_offset(struct timekeeper *tk)
-{
-	struct timespec tmp, *wtm = &tk->wall_to_monotonic;
-
-	set_normalized_timespec(&tmp, -wtm->tv_sec, -wtm->tv_nsec);
-	tk->offs_real = timespec_to_ktime(tmp);
-}
-
 /* must hold write on timekeeper.lock */
 static void timekeeping_update(struct timekeeper *tk, bool clearntp)
 {
@@ -234,12 +252,10 @@ static void timekeeping_update(struct timekeeper *tk, bool clearntp)
 		tk->ntp_error = 0;
 		ntp_clear();
 	}
-	update_rt_offset(tk);
 	xt = tk_xtime(tk);
 	update_vsyscall(&xt, &tk->wall_to_monotonic, tk->clock, tk->mult);
 }
 
-
 /**
  * timekeeping_forward_now - update clock to the current time
  *
@@ -261,7 +277,7 @@ static void timekeeping_forward_now(struct timekeeper *tk)
 	tk->xtime_nsec += cycle_delta * tk->mult;
 
 	/* If arch requires, add in gettimeoffset() */
-	tk->xtime_nsec += arch_gettimeoffset() << tk->shift;
+	tk->xtime_nsec += (u64)arch_gettimeoffset() << tk->shift;
 
 	tk_normalize_xtime(tk);
 
@@ -277,18 +293,19 @@ static void timekeeping_forward_now(struct timekeeper *tk)
  */
 void getnstimeofday(struct timespec *ts)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long seq;
 	s64 nsecs = 0;
 
 	WARN_ON(timekeeping_suspended);
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
+		seq = read_seqbegin(&tk->lock);
 
-		ts->tv_sec = timekeeper.xtime_sec;
-		ts->tv_nsec = timekeeping_get_ns(&timekeeper);
+		ts->tv_sec = tk->xtime_sec;
+		ts->tv_nsec = timekeeping_get_ns(tk);
 
-	} while (read_seqretry(&timekeeper.lock, seq));
+	} while (read_seqretry(&tk->lock, seq));
 
 	timespec_add_ns(ts, nsecs);
 }
@@ -296,19 +313,18 @@ EXPORT_SYMBOL(getnstimeofday);
 
 ktime_t ktime_get(void)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned int seq;
 	s64 secs, nsecs;
 
 	WARN_ON(timekeeping_suspended);
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
-		secs = timekeeper.xtime_sec +
-				timekeeper.wall_to_monotonic.tv_sec;
-		nsecs = timekeeping_get_ns(&timekeeper) +
-				timekeeper.wall_to_monotonic.tv_nsec;
+		seq = read_seqbegin(&tk->lock);
+		secs = tk->xtime_sec + tk->wall_to_monotonic.tv_sec;
+		nsecs = timekeeping_get_ns(tk) + tk->wall_to_monotonic.tv_nsec;
 
-	} while (read_seqretry(&timekeeper.lock, seq));
+	} while (read_seqretry(&tk->lock, seq));
 	/*
 	 * Use ktime_set/ktime_add_ns to create a proper ktime on
 	 * 32-bit architectures without CONFIG_KTIME_SCALAR.
@@ -327,18 +343,19 @@ EXPORT_SYMBOL_GPL(ktime_get);
  */
 void ktime_get_ts(struct timespec *ts)
 {
+	struct timekeeper *tk = &timekeeper;
 	struct timespec tomono;
 	unsigned int seq;
 
 	WARN_ON(timekeeping_suspended);
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
-		ts->tv_sec = timekeeper.xtime_sec;
-		ts->tv_nsec = timekeeping_get_ns(&timekeeper);
-		tomono = timekeeper.wall_to_monotonic;
+		seq = read_seqbegin(&tk->lock);
+		ts->tv_sec = tk->xtime_sec;
+		ts->tv_nsec = timekeeping_get_ns(tk);
+		tomono = tk->wall_to_monotonic;
 
-	} while (read_seqretry(&timekeeper.lock, seq));
+	} while (read_seqretry(&tk->lock, seq));
 
 	set_normalized_timespec(ts, ts->tv_sec + tomono.tv_sec,
 				ts->tv_nsec + tomono.tv_nsec);
@@ -358,22 +375,23 @@ EXPORT_SYMBOL_GPL(ktime_get_ts);
  */
 void getnstime_raw_and_real(struct timespec *ts_raw, struct timespec *ts_real)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long seq;
 	s64 nsecs_raw, nsecs_real;
 
 	WARN_ON_ONCE(timekeeping_suspended);
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
+		seq = read_seqbegin(&tk->lock);
 
-		*ts_raw = timekeeper.raw_time;
-		ts_real->tv_sec = timekeeper.xtime_sec;
+		*ts_raw = tk->raw_time;
+		ts_real->tv_sec = tk->xtime_sec;
 		ts_real->tv_nsec = 0;
 
-		nsecs_raw = timekeeping_get_ns_raw(&timekeeper);
-		nsecs_real = timekeeping_get_ns(&timekeeper);
+		nsecs_raw = timekeeping_get_ns_raw(tk);
+		nsecs_real = timekeeping_get_ns(tk);
 
-	} while (read_seqretry(&timekeeper.lock, seq));
+	} while (read_seqretry(&tk->lock, seq));
 
 	timespec_add_ns(ts_raw, nsecs_raw);
 	timespec_add_ns(ts_real, nsecs_real);
@@ -406,28 +424,28 @@ EXPORT_SYMBOL(do_gettimeofday);
  */
 int do_settimeofday(const struct timespec *tv)
 {
+	struct timekeeper *tk = &timekeeper;
 	struct timespec ts_delta, xt;
 	unsigned long flags;
 
-	if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
+	if (!timespec_valid_strict(tv))
 		return -EINVAL;
 
-	write_seqlock_irqsave(&timekeeper.lock, flags);
+	write_seqlock_irqsave(&tk->lock, flags);
 
-	timekeeping_forward_now(&timekeeper);
+	timekeeping_forward_now(tk);
 
-	xt = tk_xtime(&timekeeper);
+	xt = tk_xtime(tk);
 	ts_delta.tv_sec = tv->tv_sec - xt.tv_sec;
 	ts_delta.tv_nsec = tv->tv_nsec - xt.tv_nsec;
 
-	timekeeper.wall_to_monotonic =
-			timespec_sub(timekeeper.wall_to_monotonic, ts_delta);
+	tk_set_wall_to_mono(tk, timespec_sub(tk->wall_to_monotonic, ts_delta));
 
-	tk_set_xtime(&timekeeper, tv);
+	tk_set_xtime(tk, tv);
 
-	timekeeping_update(&timekeeper, true);
+	timekeeping_update(tk, true);
 
-	write_sequnlock_irqrestore(&timekeeper.lock, flags);
+	write_sequnlock_irqrestore(&tk->lock, flags);
 
 	/* signal hrtimers about time change */
 	clock_was_set();
@@ -436,7 +454,6 @@ int do_settimeofday(const struct timespec *tv)
 }
 EXPORT_SYMBOL(do_settimeofday);
 
-
 /**
  * timekeeping_inject_offset - Adds or subtracts from the current time.
  * @tv:		pointer to the timespec variable containing the offset
@@ -445,28 +462,37 @@ EXPORT_SYMBOL(do_settimeofday);
  */
 int timekeeping_inject_offset(struct timespec *ts)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long flags;
+	struct timespec tmp;
+	int ret = 0;
 
 	if ((unsigned long)ts->tv_nsec >= NSEC_PER_SEC)
 		return -EINVAL;
 
-	write_seqlock_irqsave(&timekeeper.lock, flags);
+	write_seqlock_irqsave(&tk->lock, flags);
 
-	timekeeping_forward_now(&timekeeper);
+	timekeeping_forward_now(tk);
 
+	/* Make sure the proposed value is valid */
+	tmp = timespec_add(tk_xtime(tk),  *ts);
+	if (!timespec_valid_strict(&tmp)) {
+		ret = -EINVAL;
+		goto error;
+	}
 
-	tk_xtime_add(&timekeeper, ts);
-	timekeeper.wall_to_monotonic =
-				timespec_sub(timekeeper.wall_to_monotonic, *ts);
+	tk_xtime_add(tk, ts);
+	tk_set_wall_to_mono(tk, timespec_sub(tk->wall_to_monotonic, *ts));
 
-	timekeeping_update(&timekeeper, true);
+error: /* even if we error out, we forwarded the time, so call update */
+	timekeeping_update(tk, true);
 
-	write_sequnlock_irqrestore(&timekeeper.lock, flags);
+	write_sequnlock_irqrestore(&tk->lock, flags);
 
 	/* signal hrtimers about time change */
 	clock_was_set();
 
-	return 0;
+	return ret;
 }
 EXPORT_SYMBOL(timekeeping_inject_offset);
 
@@ -477,23 +503,24 @@ EXPORT_SYMBOL(timekeeping_inject_offset);
  */
 static int change_clocksource(void *data)
 {
+	struct timekeeper *tk = &timekeeper;
 	struct clocksource *new, *old;
 	unsigned long flags;
 
 	new = (struct clocksource *) data;
 
-	write_seqlock_irqsave(&timekeeper.lock, flags);
+	write_seqlock_irqsave(&tk->lock, flags);
 
-	timekeeping_forward_now(&timekeeper);
+	timekeeping_forward_now(tk);
 	if (!new->enable || new->enable(new) == 0) {
-		old = timekeeper.clock;
-		tk_setup_internals(&timekeeper, new);
+		old = tk->clock;
+		tk_setup_internals(tk, new);
 		if (old->disable)
 			old->disable(old);
 	}
-	timekeeping_update(&timekeeper, true);
+	timekeeping_update(tk, true);
 
-	write_sequnlock_irqrestore(&timekeeper.lock, flags);
+	write_sequnlock_irqrestore(&tk->lock, flags);
 
 	return 0;
 }
@@ -507,7 +534,9 @@ static int change_clocksource(void *data)
  */
 void timekeeping_notify(struct clocksource *clock)
 {
-	if (timekeeper.clock == clock)
+	struct timekeeper *tk = &timekeeper;
+
+	if (tk->clock == clock)
 		return;
 	stop_machine(change_clocksource, clock, NULL);
 	tick_clock_notify();
@@ -536,35 +565,36 @@ EXPORT_SYMBOL_GPL(ktime_get_real);
  */
 void getrawmonotonic(struct timespec *ts)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long seq;
 	s64 nsecs;
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
-		nsecs = timekeeping_get_ns_raw(&timekeeper);
-		*ts = timekeeper.raw_time;
+		seq = read_seqbegin(&tk->lock);
+		nsecs = timekeeping_get_ns_raw(tk);
+		*ts = tk->raw_time;
 
-	} while (read_seqretry(&timekeeper.lock, seq));
+	} while (read_seqretry(&tk->lock, seq));
 
 	timespec_add_ns(ts, nsecs);
 }
 EXPORT_SYMBOL(getrawmonotonic);
 
-
 /**
  * timekeeping_valid_for_hres - Check if timekeeping is suitable for hres
  */
 int timekeeping_valid_for_hres(void)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long seq;
 	int ret;
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
+		seq = read_seqbegin(&tk->lock);
 
-		ret = timekeeper.clock->flags & CLOCK_SOURCE_VALID_FOR_HRES;
+		ret = tk->clock->flags & CLOCK_SOURCE_VALID_FOR_HRES;
 
-	} while (read_seqretry(&timekeeper.lock, seq));
+	} while (read_seqretry(&tk->lock, seq));
 
 	return ret;
 }
@@ -574,15 +604,16 @@ int timekeeping_valid_for_hres(void)
  */
 u64 timekeeping_max_deferment(void)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long seq;
 	u64 ret;
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
+		seq = read_seqbegin(&tk->lock);
 
-		ret = timekeeper.clock->max_idle_ns;
+		ret = tk->clock->max_idle_ns;
 
-	} while (read_seqretry(&timekeeper.lock, seq));
+	} while (read_seqretry(&tk->lock, seq));
 
 	return ret;
 }
@@ -622,46 +653,56 @@ void __attribute__((weak)) read_boot_clock(struct timespec *ts)
  */
 void __init timekeeping_init(void)
 {
+	struct timekeeper *tk = &timekeeper;
 	struct clocksource *clock;
 	unsigned long flags;
-	struct timespec now, boot;
+	struct timespec now, boot, tmp;
 
 	read_persistent_clock(&now);
+	if (!timespec_valid_strict(&now)) {
+		pr_warn("WARNING: Persistent clock returned invalid value!\n"
+			"         Check your CMOS/BIOS settings.\n");
+		now.tv_sec = 0;
+		now.tv_nsec = 0;
+	}
+
 	read_boot_clock(&boot);
+	if (!timespec_valid_strict(&boot)) {
+		pr_warn("WARNING: Boot clock returned invalid value!\n"
+			"         Check your CMOS/BIOS settings.\n");
+		boot.tv_sec = 0;
+		boot.tv_nsec = 0;
+	}
 
-	seqlock_init(&timekeeper.lock);
+	seqlock_init(&tk->lock);
 
 	ntp_init();
 
-	write_seqlock_irqsave(&timekeeper.lock, flags);
+	write_seqlock_irqsave(&tk->lock, flags);
 	clock = clocksource_default_clock();
 	if (clock->enable)
 		clock->enable(clock);
-	tk_setup_internals(&timekeeper, clock);
+	tk_setup_internals(tk, clock);
 
-	tk_set_xtime(&timekeeper, &now);
-	timekeeper.raw_time.tv_sec = 0;
-	timekeeper.raw_time.tv_nsec = 0;
+	tk_set_xtime(tk, &now);
+	tk->raw_time.tv_sec = 0;
+	tk->raw_time.tv_nsec = 0;
 	if (boot.tv_sec == 0 && boot.tv_nsec == 0)
-		boot = tk_xtime(&timekeeper);
-
-	set_normalized_timespec(&timekeeper.wall_to_monotonic,
-				-boot.tv_sec, -boot.tv_nsec);
-	update_rt_offset(&timekeeper);
-	timekeeper.total_sleep_time.tv_sec = 0;
-	timekeeper.total_sleep_time.tv_nsec = 0;
-	write_sequnlock_irqrestore(&timekeeper.lock, flags);
+		boot = tk_xtime(tk);
+
+	set_normalized_timespec(&tmp, -boot.tv_sec, -boot.tv_nsec);
+	tk_set_wall_to_mono(tk, tmp);
+
+	tmp.tv_sec = 0;
+	tmp.tv_nsec = 0;
+	tk_set_sleep_time(tk, tmp);
+
+	write_sequnlock_irqrestore(&tk->lock, flags);
 }
 
 /* time in seconds when suspend began */
 static struct timespec timekeeping_suspend_time;
 
-static void update_sleep_time(struct timespec t)
-{
-	timekeeper.total_sleep_time = t;
-	timekeeper.offs_boot = timespec_to_ktime(t);
-}
-
 /**
  * __timekeeping_inject_sleeptime - Internal function to add sleep interval
  * @delta: pointer to a timespec delta value
@@ -672,18 +713,16 @@ static void update_sleep_time(struct timespec t)
 static void __timekeeping_inject_sleeptime(struct timekeeper *tk,
 							struct timespec *delta)
 {
-	if (!timespec_valid(delta)) {
+	if (!timespec_valid_strict(delta)) {
 		printk(KERN_WARNING "__timekeeping_inject_sleeptime: Invalid "
 					"sleep delta value!\n");
 		return;
 	}
-
 	tk_xtime_add(tk, delta);
-	tk->wall_to_monotonic = timespec_sub(tk->wall_to_monotonic, *delta);
-	update_sleep_time(timespec_add(tk->total_sleep_time, *delta));
+	tk_set_wall_to_mono(tk, timespec_sub(tk->wall_to_monotonic, *delta));
+	tk_set_sleep_time(tk, timespec_add(tk->total_sleep_time, *delta));
 }
 
-
 /**
  * timekeeping_inject_sleeptime - Adds suspend interval to timeekeeping values
  * @delta: pointer to a timespec delta value
@@ -696,6 +735,7 @@ static void __timekeeping_inject_sleeptime(struct timekeeper *tk,
  */
 void timekeeping_inject_sleeptime(struct timespec *delta)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long flags;
 	struct timespec ts;
 
@@ -704,21 +744,20 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
 	if (!(ts.tv_sec == 0 && ts.tv_nsec == 0))
 		return;
 
-	write_seqlock_irqsave(&timekeeper.lock, flags);
+	write_seqlock_irqsave(&tk->lock, flags);
 
-	timekeeping_forward_now(&timekeeper);
+	timekeeping_forward_now(tk);
 
-	__timekeeping_inject_sleeptime(&timekeeper, delta);
+	__timekeeping_inject_sleeptime(tk, delta);
 
-	timekeeping_update(&timekeeper, true);
+	timekeeping_update(tk, true);
 
-	write_sequnlock_irqrestore(&timekeeper.lock, flags);
+	write_sequnlock_irqrestore(&tk->lock, flags);
 
 	/* signal hrtimers about time change */
 	clock_was_set();
 }
 
-
 /**
  * timekeeping_resume - Resumes the generic timekeeping subsystem.
  *
@@ -728,6 +767,7 @@ void timekeeping_inject_sleeptime(struct timespec *delta)
  */
 static void timekeeping_resume(void)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long flags;
 	struct timespec ts;
 
@@ -735,18 +775,18 @@ static void timekeeping_resume(void)
 
 	clocksource_resume();
 
-	write_seqlock_irqsave(&timekeeper.lock, flags);
+	write_seqlock_irqsave(&tk->lock, flags);
 
 	if (timespec_compare(&ts, &timekeeping_suspend_time) > 0) {
 		ts = timespec_sub(ts, timekeeping_suspend_time);
-		__timekeeping_inject_sleeptime(&timekeeper, &ts);
+		__timekeeping_inject_sleeptime(tk, &ts);
 	}
 	/* re-base the last cycle value */
-	timekeeper.clock->cycle_last = timekeeper.clock->read(timekeeper.clock);
-	timekeeper.ntp_error = 0;
+	tk->clock->cycle_last = tk->clock->read(tk->clock);
+	tk->ntp_error = 0;
 	timekeeping_suspended = 0;
-	timekeeping_update(&timekeeper, false);
-	write_sequnlock_irqrestore(&timekeeper.lock, flags);
+	timekeeping_update(tk, false);
+	write_sequnlock_irqrestore(&tk->lock, flags);
 
 	touch_softlockup_watchdog();
 
@@ -758,14 +798,15 @@ static void timekeeping_resume(void)
 
 static int timekeeping_suspend(void)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long flags;
 	struct timespec		delta, delta_delta;
 	static struct timespec	old_delta;
 
 	read_persistent_clock(&timekeeping_suspend_time);
 
-	write_seqlock_irqsave(&timekeeper.lock, flags);
-	timekeeping_forward_now(&timekeeper);
+	write_seqlock_irqsave(&tk->lock, flags);
+	timekeeping_forward_now(tk);
 	timekeeping_suspended = 1;
 
 	/*
@@ -774,7 +815,7 @@ static int timekeeping_suspend(void)
 	 * try to compensate so the difference in system time
 	 * and persistent_clock time stays close to constant.
 	 */
-	delta = timespec_sub(tk_xtime(&timekeeper), timekeeping_suspend_time);
+	delta = timespec_sub(tk_xtime(tk), timekeeping_suspend_time);
 	delta_delta = timespec_sub(delta, old_delta);
 	if (abs(delta_delta.tv_sec)  >= 2) {
 		/*
@@ -787,7 +828,7 @@ static int timekeeping_suspend(void)
 		timekeeping_suspend_time =
 			timespec_add(timekeeping_suspend_time, delta_delta);
 	}
-	write_sequnlock_irqrestore(&timekeeper.lock, flags);
+	write_sequnlock_irqrestore(&tk->lock, flags);
 
 	clockevents_notify(CLOCK_EVT_NOTIFY_SUSPEND, NULL);
 	clocksource_suspend();
@@ -898,27 +939,29 @@ static void timekeeping_adjust(struct timekeeper *tk, s64 offset)
 		 * the error. This causes the likely below to be unlikely.
 		 *
 		 * The proper fix is to avoid rounding up by using
-		 * the high precision timekeeper.xtime_nsec instead of
+		 * the high precision tk->xtime_nsec instead of
 		 * xtime.tv_nsec everywhere. Fixing this will take some
 		 * time.
 		 */
 		if (likely(error <= interval))
 			adj = 1;
 		else
-			adj = timekeeping_bigadjust(tk, error, &interval,
-							&offset);
-	} else if (error < -interval) {
-		/* See comment above, this is just switched for the negative */
-		error >>= 2;
-		if (likely(error >= -interval)) {
-			adj = -1;
-			interval = -interval;
-			offset = -offset;
-		} else
-			adj = timekeeping_bigadjust(tk, error, &interval,
-							&offset);
-	} else
-		return;
+			adj = timekeeping_bigadjust(tk, error, &interval, &offset);
+	} else {
+		if (error < -interval) {
+			/* See comment above, this is just switched for the negative */
+			error >>= 2;
+			if (likely(error >= -interval)) {
+				adj = -1;
+				interval = -interval;
+				offset = -offset;
+			} else {
+				adj = timekeeping_bigadjust(tk, error, &interval, &offset);
+			}
+		} else {
+			goto out_adjust;
+		}
+	}
 
 	if (unlikely(tk->clock->maxadj &&
 		(tk->mult + adj > tk->clock->mult + tk->clock->maxadj))) {
@@ -981,6 +1024,7 @@ static void timekeeping_adjust(struct timekeeper *tk, s64 offset)
 	tk->xtime_nsec -= offset;
 	tk->ntp_error -= (interval - offset) << tk->ntp_error_shift;
 
+out_adjust:
 	/*
 	 * It may be possible that when we entered this function, xtime_nsec
 	 * was very small.  Further, if we're slightly speeding the clocksource
@@ -1003,7 +1047,6 @@ static void timekeeping_adjust(struct timekeeper *tk, s64 offset)
 
 }
 
-
 /**
  * accumulate_nsecs_to_secs - Accumulates nsecs into secs
  *
@@ -1024,15 +1067,21 @@ static inline void accumulate_nsecs_to_secs(struct timekeeper *tk)
 
 		/* Figure out if its a leap sec and apply if needed */
 		leap = second_overflow(tk->xtime_sec);
-		tk->xtime_sec += leap;
-		tk->wall_to_monotonic.tv_sec -= leap;
-		if (leap)
-			clock_was_set_delayed();
+		if (unlikely(leap)) {
+			struct timespec ts;
+
+			tk->xtime_sec += leap;
+
+			ts.tv_sec = leap;
+			ts.tv_nsec = 0;
+			tk_set_wall_to_mono(tk,
+				timespec_sub(tk->wall_to_monotonic, ts));
 
+			clock_was_set_delayed();
+		}
 	}
 }
 
-
 /**
  * logarithmic_accumulation - shifted accumulation of cycles
  *
@@ -1076,7 +1125,6 @@ static cycle_t logarithmic_accumulation(struct timekeeper *tk, cycle_t offset,
 	return offset;
 }
 
-
 /**
  * update_wall_time - Uses the current clocksource to increment the wall time
  *
@@ -1084,25 +1132,30 @@ static cycle_t logarithmic_accumulation(struct timekeeper *tk, cycle_t offset,
 static void update_wall_time(void)
 {
 	struct clocksource *clock;
+	struct timekeeper *tk = &timekeeper;
 	cycle_t offset;
 	int shift = 0, maxshift;
 	unsigned long flags;
 	s64 remainder;
 
-	write_seqlock_irqsave(&timekeeper.lock, flags);
+	write_seqlock_irqsave(&tk->lock, flags);
 
 	/* Make sure we're fully resumed: */
 	if (unlikely(timekeeping_suspended))
 		goto out;
 
-	clock = timekeeper.clock;
+	clock = tk->clock;
 
 #ifdef CONFIG_ARCH_USES_GETTIMEOFFSET
-	offset = timekeeper.cycle_interval;
+	offset = tk->cycle_interval;
 #else
 	offset = (clock->read(clock) - clock->cycle_last) & clock->mask;
 #endif
 
+	/* Check if there's really nothing to do */
+	if (offset < tk->cycle_interval)
+		goto out;
+
 	/*
 	 * With NO_HZ we may have to accumulate many cycle_intervals
 	 * (think "ticks") worth of time at once. To do this efficiently,
@@ -1111,19 +1164,19 @@ static void update_wall_time(void)
 	 * chunk in one go, and then try to consume the next smaller
 	 * doubled multiple.
 	 */
-	shift = ilog2(offset) - ilog2(timekeeper.cycle_interval);
+	shift = ilog2(offset) - ilog2(tk->cycle_interval);
 	shift = max(0, shift);
 	/* Bound shift to one less than what overflows tick_length */
 	maxshift = (64 - (ilog2(ntp_tick_length())+1)) - 1;
 	shift = min(shift, maxshift);
-	while (offset >= timekeeper.cycle_interval) {
-		offset = logarithmic_accumulation(&timekeeper, offset, shift);
-		if(offset < timekeeper.cycle_interval<<shift)
+	while (offset >= tk->cycle_interval) {
+		offset = logarithmic_accumulation(tk, offset, shift);
+		if (offset < tk->cycle_interval<<shift)
 			shift--;
 	}
 
 	/* correct the clock when NTP error is too big */
-	timekeeping_adjust(&timekeeper, offset);
+	timekeeping_adjust(tk, offset);
 
 
 	/*
@@ -1135,21 +1188,21 @@ static void update_wall_time(void)
 	* the vsyscall implementations are converted to use xtime_nsec
 	* (shifted nanoseconds), this can be killed.
 	*/
-	remainder = timekeeper.xtime_nsec & ((1 << timekeeper.shift) - 1);
-	timekeeper.xtime_nsec -= remainder;
-	timekeeper.xtime_nsec += 1 << timekeeper.shift;
-	timekeeper.ntp_error += remainder << timekeeper.ntp_error_shift;
+	remainder = tk->xtime_nsec & ((1ULL << tk->shift) - 1);
+	tk->xtime_nsec -= remainder;
+	tk->xtime_nsec += 1ULL << tk->shift;
+	tk->ntp_error += remainder << tk->ntp_error_shift;
 
 	/*
 	 * Finally, make sure that after the rounding
 	 * xtime_nsec isn't larger than NSEC_PER_SEC
 	 */
-	accumulate_nsecs_to_secs(&timekeeper);
+	accumulate_nsecs_to_secs(tk);
 
-	timekeeping_update(&timekeeper, false);
+	timekeeping_update(tk, false);
 
 out:
-	write_sequnlock_irqrestore(&timekeeper.lock, flags);
+	write_sequnlock_irqrestore(&tk->lock, flags);
 
 }
 
@@ -1166,18 +1219,18 @@ out:
  */
 void getboottime(struct timespec *ts)
 {
+	struct timekeeper *tk = &timekeeper;
 	struct timespec boottime = {
-		.tv_sec = timekeeper.wall_to_monotonic.tv_sec +
-				timekeeper.total_sleep_time.tv_sec,
-		.tv_nsec = timekeeper.wall_to_monotonic.tv_nsec +
-				timekeeper.total_sleep_time.tv_nsec
+		.tv_sec = tk->wall_to_monotonic.tv_sec +
+				tk->total_sleep_time.tv_sec,
+		.tv_nsec = tk->wall_to_monotonic.tv_nsec +
+				tk->total_sleep_time.tv_nsec
 	};
 
 	set_normalized_timespec(ts, -boottime.tv_sec, -boottime.tv_nsec);
 }
 EXPORT_SYMBOL_GPL(getboottime);
 
-
 /**
  * get_monotonic_boottime - Returns monotonic time since boot
  * @ts:		pointer to the timespec to be set
@@ -1189,19 +1242,20 @@ EXPORT_SYMBOL_GPL(getboottime);
  */
 void get_monotonic_boottime(struct timespec *ts)
 {
+	struct timekeeper *tk = &timekeeper;
 	struct timespec tomono, sleep;
 	unsigned int seq;
 
 	WARN_ON(timekeeping_suspended);
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
-		ts->tv_sec = timekeeper.xtime_sec;
-		ts->tv_nsec = timekeeping_get_ns(&timekeeper);
-		tomono = timekeeper.wall_to_monotonic;
-		sleep = timekeeper.total_sleep_time;
+		seq = read_seqbegin(&tk->lock);
+		ts->tv_sec = tk->xtime_sec;
+		ts->tv_nsec = timekeeping_get_ns(tk);
+		tomono = tk->wall_to_monotonic;
+		sleep = tk->total_sleep_time;
 
-	} while (read_seqretry(&timekeeper.lock, seq));
+	} while (read_seqretry(&tk->lock, seq));
 
 	set_normalized_timespec(ts, ts->tv_sec + tomono.tv_sec + sleep.tv_sec,
 			ts->tv_nsec + tomono.tv_nsec + sleep.tv_nsec);
@@ -1231,31 +1285,38 @@ EXPORT_SYMBOL_GPL(ktime_get_boottime);
  */
 void monotonic_to_bootbased(struct timespec *ts)
 {
-	*ts = timespec_add(*ts, timekeeper.total_sleep_time);
+	struct timekeeper *tk = &timekeeper;
+
+	*ts = timespec_add(*ts, tk->total_sleep_time);
 }
 EXPORT_SYMBOL_GPL(monotonic_to_bootbased);
 
 unsigned long get_seconds(void)
 {
-	return timekeeper.xtime_sec;
+	struct timekeeper *tk = &timekeeper;
+
+	return tk->xtime_sec;
 }
 EXPORT_SYMBOL(get_seconds);
 
 struct timespec __current_kernel_time(void)
 {
-	return tk_xtime(&timekeeper);
+	struct timekeeper *tk = &timekeeper;
+
+	return tk_xtime(tk);
 }
 
 struct timespec current_kernel_time(void)
 {
+	struct timekeeper *tk = &timekeeper;
 	struct timespec now;
 	unsigned long seq;
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
+		seq = read_seqbegin(&tk->lock);
 
-		now = tk_xtime(&timekeeper);
-	} while (read_seqretry(&timekeeper.lock, seq));
+		now = tk_xtime(tk);
+	} while (read_seqretry(&tk->lock, seq));
 
 	return now;
 }
@@ -1263,15 +1324,16 @@ EXPORT_SYMBOL(current_kernel_time);
 
 struct timespec get_monotonic_coarse(void)
 {
+	struct timekeeper *tk = &timekeeper;
 	struct timespec now, mono;
 	unsigned long seq;
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
+		seq = read_seqbegin(&tk->lock);
 
-		now = tk_xtime(&timekeeper);
-		mono = timekeeper.wall_to_monotonic;
-	} while (read_seqretry(&timekeeper.lock, seq));
+		now = tk_xtime(tk);
+		mono = tk->wall_to_monotonic;
+	} while (read_seqretry(&tk->lock, seq));
 
 	set_normalized_timespec(&now, now.tv_sec + mono.tv_sec,
 				now.tv_nsec + mono.tv_nsec);
@@ -1300,14 +1362,15 @@ void do_timer(unsigned long ticks)
 void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
 				struct timespec *wtom, struct timespec *sleep)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long seq;
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
-		*xtim = tk_xtime(&timekeeper);
-		*wtom = timekeeper.wall_to_monotonic;
-		*sleep = timekeeper.total_sleep_time;
-	} while (read_seqretry(&timekeeper.lock, seq));
+		seq = read_seqbegin(&tk->lock);
+		*xtim = tk_xtime(tk);
+		*wtom = tk->wall_to_monotonic;
+		*sleep = tk->total_sleep_time;
+	} while (read_seqretry(&tk->lock, seq));
 }
 
 #ifdef CONFIG_HIGH_RES_TIMERS
@@ -1321,19 +1384,20 @@ void get_xtime_and_monotonic_and_sleep_offset(struct timespec *xtim,
  */
 ktime_t ktime_get_update_offsets(ktime_t *offs_real, ktime_t *offs_boot)
 {
+	struct timekeeper *tk = &timekeeper;
 	ktime_t now;
 	unsigned int seq;
 	u64 secs, nsecs;
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
+		seq = read_seqbegin(&tk->lock);
 
-		secs = timekeeper.xtime_sec;
-		nsecs = timekeeping_get_ns(&timekeeper);
+		secs = tk->xtime_sec;
+		nsecs = timekeeping_get_ns(tk);
 
-		*offs_real = timekeeper.offs_real;
-		*offs_boot = timekeeper.offs_boot;
-	} while (read_seqretry(&timekeeper.lock, seq));
+		*offs_real = tk->offs_real;
+		*offs_boot = tk->offs_boot;
+	} while (read_seqretry(&tk->lock, seq));
 
 	now = ktime_add_ns(ktime_set(secs, 0), nsecs);
 	now = ktime_sub(now, *offs_real);
@@ -1346,19 +1410,19 @@ ktime_t ktime_get_update_offsets(ktime_t *offs_real, ktime_t *offs_boot)
  */
 ktime_t ktime_get_monotonic_offset(void)
 {
+	struct timekeeper *tk = &timekeeper;
 	unsigned long seq;
 	struct timespec wtom;
 
 	do {
-		seq = read_seqbegin(&timekeeper.lock);
-		wtom = timekeeper.wall_to_monotonic;
-	} while (read_seqretry(&timekeeper.lock, seq));
+		seq = read_seqbegin(&tk->lock);
+		wtom = tk->wall_to_monotonic;
+	} while (read_seqretry(&tk->lock, seq));
 
 	return timespec_to_ktime(wtom);
 }
 EXPORT_SYMBOL_GPL(ktime_get_monotonic_offset);
 
-
 /**
  * xtime_update() - advances the timekeeping infrastructure
  * @ticks:	number of ticks, that have elapsed since the last call.
diff --git a/kernel/timer.c b/kernel/timer.c
index a61c09374eba..8c5e7b908c68 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1407,13 +1407,6 @@ SYSCALL_DEFINE1(alarm, unsigned int, seconds)
 
 #endif
 
-#ifndef __alpha__
-
-/*
- * The Alpha uses getxpid, getxuid, and getxgid instead.  Maybe this
- * should be moved into arch/i386 instead?
- */
-
 /**
  * sys_getpid - return the thread group id of the current process
  *
@@ -1469,8 +1462,6 @@ SYSCALL_DEFINE0(getegid)
 	return from_kgid_munged(current_user_ns(), current_egid());
 }
 
-#endif
-
 static void process_timeout(unsigned long __data)
 {
 	wake_up_process((struct task_struct *)__data);
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c
index fee3752ae8f6..8a6d2ee2086c 100644
--- a/kernel/trace/trace_event_perf.c
+++ b/kernel/trace/trace_event_perf.c
@@ -281,7 +281,7 @@ perf_ftrace_function_call(unsigned long ip, unsigned long parent_ip)
 
 	head = this_cpu_ptr(event_function.perf_events);
 	perf_trace_buf_submit(entry, ENTRY_SIZE, rctx, 0,
-			      1, &regs, head);
+			      1, &regs, head, NULL);
 
 #undef ENTRY_SIZE
 }
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index b31d3d5699fe..1a2117043bb1 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -1002,7 +1002,8 @@ static __kprobes void kprobe_perf_func(struct kprobe *kp,
 	store_trace_args(sizeof(*entry), tp, regs, (u8 *)&entry[1], dsize);
 
 	head = this_cpu_ptr(call->perf_events);
-	perf_trace_buf_submit(entry, size, rctx, entry->ip, 1, regs, head);
+	perf_trace_buf_submit(entry, size, rctx,
+					entry->ip, 1, regs, head, NULL);
 }
 
 /* Kretprobe profile handler */
@@ -1033,7 +1034,8 @@ static __kprobes void kretprobe_perf_func(struct kretprobe_instance *ri,
 	store_trace_args(sizeof(*entry), tp, regs, (u8 *)&entry[1], dsize);
 
 	head = this_cpu_ptr(call->perf_events);
-	perf_trace_buf_submit(entry, size, rctx, entry->ret_ip, 1, regs, head);
+	perf_trace_buf_submit(entry, size, rctx,
+					entry->ret_ip, 1, regs, head, NULL);
 }
 #endif	/* CONFIG_PERF_EVENTS */
 
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 96fc73369099..6b245f64c8dd 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -506,6 +506,8 @@ static void perf_syscall_enter(void *ignore, struct pt_regs *regs, long id)
 	int size;
 
 	syscall_nr = syscall_get_nr(current, regs);
+	if (syscall_nr < 0)
+		return;
 	if (!test_bit(syscall_nr, enabled_perf_enter_syscalls))
 		return;
 
@@ -532,7 +534,7 @@ static void perf_syscall_enter(void *ignore, struct pt_regs *regs, long id)
 			       (unsigned long *)&rec->args);
 
 	head = this_cpu_ptr(sys_data->enter_event->perf_events);
-	perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
+	perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head, NULL);
 }
 
 int perf_sysenter_enable(struct ftrace_event_call *call)
@@ -580,6 +582,8 @@ static void perf_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
 	int size;
 
 	syscall_nr = syscall_get_nr(current, regs);
+	if (syscall_nr < 0)
+		return;
 	if (!test_bit(syscall_nr, enabled_perf_exit_syscalls))
 		return;
 
@@ -608,7 +612,7 @@ static void perf_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
 	rec->ret = syscall_get_return_value(current, regs);
 
 	head = this_cpu_ptr(sys_data->exit_event->perf_events);
-	perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head);
+	perf_trace_buf_submit(rec, size, rctx, 0, 1, regs, head, NULL);
 }
 
 int perf_sysexit_enable(struct ftrace_event_call *call)
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 2b36ac68549e..03003cd7dd96 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -670,7 +670,7 @@ static void uprobe_perf_func(struct trace_uprobe *tu, struct pt_regs *regs)
 		call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset);
 
 	head = this_cpu_ptr(call->perf_events);
-	perf_trace_buf_submit(entry, size, rctx, entry->ip, 1, regs, head);
+	perf_trace_buf_submit(entry, size, rctx, entry->ip, 1, regs, head, NULL);
 
  out:
 	preempt_enable();
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 69add8a9da68..4b1dfba70f7c 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -575,7 +575,7 @@ out:
 /*
  * Create/destroy watchdog threads as CPUs come and go:
  */
-static int
+static int __cpuinit
 cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 {
 	int hotcpu = (unsigned long)hcpu;
@@ -610,27 +610,10 @@ cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
 	return NOTIFY_OK;
 }
 
-static struct notifier_block cpu_nfb = {
+static struct notifier_block __cpuinitdata cpu_nfb = {
 	.notifier_call = cpu_callback
 };
 
-#ifdef CONFIG_SUSPEND
-/*
- * On exit from suspend we force an offline->online transition on the boot CPU
- * so that the PMU state that was lost while in suspended state gets set up
- * properly for the boot CPU.  This information is required for restarting the
- * NMI watchdog.
- */
-void lockup_detector_bootcpu_resume(void)
-{
-	void *cpu = (void *)(long)smp_processor_id();
-
-	cpu_callback(&cpu_nfb, CPU_DEAD_FROZEN, cpu);
-	cpu_callback(&cpu_nfb, CPU_UP_PREPARE_FROZEN, cpu);
-	cpu_callback(&cpu_nfb, CPU_ONLINE_FROZEN, cpu);
-}
-#endif
-
 void __init lockup_detector_init(void)
 {
 	void *cpu = (void *)(long)smp_processor_id();