Merge branch 'x86/urgent' into x86/cleanups

11 files changed, 21 insertions, 16 deletions

diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c
index 21575fc46d05..1d3ef29a2583 100644
--- a/kernel/nsproxy.c
+++ b/kernel/nsproxy.c
@@ -14,7 +14,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/version.h>
 #include <linux/nsproxy.h>
 #include <linux/init_task.h>
 #include <linux/mnt_namespace.h>
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index a0abf9a463f9..80ccac849e46 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -14,7 +14,6 @@
 #include <linux/module.h>
 #include <linux/file.h>
 #include <linux/utsname.h>
-#include <linux/version.h>
 #include <linux/delay.h>
 #include <linux/bitops.h>
 #include <linux/genhd.h>
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index f14f372cf6f5..467d5940f624 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -77,6 +77,7 @@ void wakeme_after_rcu(struct rcu_head  *head)
  * sections are delimited by rcu_read_lock() and rcu_read_unlock(),
  * and may be nested.
  */
+void synchronize_rcu(void);     /* Makes kernel-doc tools happy */
 synchronize_rcu_xxx(synchronize_rcu, call_rcu)
 EXPORT_SYMBOL_GPL(synchronize_rcu);
 
diff --git a/kernel/sched_features.h b/kernel/sched_features.h
index 862b06bd560a..9353ca78154e 100644
--- a/kernel/sched_features.h
+++ b/kernel/sched_features.h
@@ -8,6 +8,6 @@ SCHED_FEAT(SYNC_WAKEUPS, 1)
 SCHED_FEAT(HRTICK, 1)
 SCHED_FEAT(DOUBLE_TICK, 0)
 SCHED_FEAT(ASYM_GRAN, 1)
-SCHED_FEAT(LB_BIAS, 0)
+SCHED_FEAT(LB_BIAS, 1)
 SCHED_FEAT(LB_WAKEUP_UPDATE, 1)
 SCHED_FEAT(ASYM_EFF_LOAD, 1)
diff --git a/kernel/signal.c b/kernel/signal.c
index c539f60c6f41..e661b01d340f 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1338,6 +1338,7 @@ int do_notify_parent(struct task_struct *tsk, int sig)
         struct siginfo info;
         unsigned long flags;
         struct sighand_struct *psig;
+        int ret = sig;
 
         BUG_ON(sig == -1);
 
@@ -1402,7 +1403,7 @@ int do_notify_parent(struct task_struct *tsk, int sig)
                  * is implementation-defined: we do (if you don't want
                  * it, just use SIG_IGN instead).
                  */
-                tsk->exit_signal = -1;
+                ret = tsk->exit_signal = -1;
                 if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)
                         sig = -1;
         }
@@ -1411,7 +1412,7 @@ int do_notify_parent(struct task_struct *tsk, int sig)
         __wake_up_parent(tsk, tsk->parent);
         spin_unlock_irqrestore(&psig->siglock, flags);
 
-        return sig;
+        return ret;
 }
 
 static void do_notify_parent_cldstop(struct task_struct *tsk, int why)
diff --git a/kernel/smp.c b/kernel/smp.c
index 782e2b93e465..f362a8553777 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -210,8 +210,10 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
 {
         struct call_single_data d;
         unsigned long flags;
-        /* prevent preemption and reschedule on another processor */
+        /* prevent preemption and reschedule on another processor,
+           as well as CPU removal */
         int me = get_cpu();
+        int err = 0;
 
         /* Can deadlock when called with interrupts disabled */
         WARN_ON(irqs_disabled());
@@ -220,7 +222,7 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
                 local_irq_save(flags);
                 func(info);
                 local_irq_restore(flags);
-        } else {
+        } else if ((unsigned)cpu < NR_CPUS && cpu_online(cpu)) {
                 struct call_single_data *data = NULL;
 
                 if (!wait) {
@@ -236,10 +238,12 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
                 data->func = func;
                 data->info = info;
                 generic_exec_single(cpu, data);
+        } else {
+                err = -ENXIO;   /* CPU not online */
         }
 
         put_cpu();
-        return 0;
+        return err;
 }
 EXPORT_SYMBOL(smp_call_function_single);
 
diff --git a/kernel/sys.c b/kernel/sys.c
index 3dacb00a7f76..038a7bc0901d 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -169,9 +169,9 @@ asmlinkage long sys_setpriority(int which, int who, int niceval)
                                 pgrp = find_vpid(who);
                         else
                                 pgrp = task_pgrp(current);
-                        do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
+                        do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
                                 error = set_one_prio(p, niceval, error);
-                        } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
+                        } while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
                         break;
                 case PRIO_USER:
                         user = current->user;
@@ -229,11 +229,11 @@ asmlinkage long sys_getpriority(int which, int who)
                                 pgrp = find_vpid(who);
                         else
                                 pgrp = task_pgrp(current);
-                        do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
+                        do_each_pid_thread(pgrp, PIDTYPE_PGID, p) {
                                 niceval = 20 - task_nice(p);
                                 if (niceval > retval)
                                         retval = niceval;
-                        } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
+                        } while_each_pid_thread(pgrp, PIDTYPE_PGID, p);
                         break;
                 case PRIO_USER:
                         user = current->user;
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index f5da526424a9..7a46bde78c66 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -643,17 +643,21 @@ void tick_setup_sched_timer(void)
                 ts->nohz_mode = NOHZ_MODE_HIGHRES;
 #endif
 }
+#endif /* HIGH_RES_TIMERS */
 
+#if defined CONFIG_NO_HZ || defined CONFIG_HIGH_RES_TIMERS
 void tick_cancel_sched_timer(int cpu)
 {
         struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu);
 
+# ifdef CONFIG_HIGH_RES_TIMERS
         if (ts->sched_timer.base)
                 hrtimer_cancel(&ts->sched_timer);
+# endif
 
         ts->nohz_mode = NOHZ_MODE_INACTIVE;
 }
-#endif /* HIGH_RES_TIMERS */
+#endif
 
 /**
  * Async notification about clocksource changes
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index a9ab0596de44..532858fa5b88 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -6,7 +6,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/version.h>
 #include <linux/nsproxy.h>
 #include <linux/slab.h>
 #include <linux/user_namespace.h>
diff --git a/kernel/utsname.c b/kernel/utsname.c
index 64d398f12444..815237a55af8 100644
--- a/kernel/utsname.c
+++ b/kernel/utsname.c
@@ -12,7 +12,6 @@
 #include <linux/module.h>
 #include <linux/uts.h>
 #include <linux/utsname.h>
-#include <linux/version.h>
 #include <linux/err.h>
 #include <linux/slab.h>
 
diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
index fe3a56c2256d..4ab9659d269e 100644
--- a/kernel/utsname_sysctl.c
+++ b/kernel/utsname_sysctl.c
@@ -12,7 +12,6 @@
 #include <linux/module.h>
 #include <linux/uts.h>
 #include <linux/utsname.h>
-#include <linux/version.h>
 #include <linux/sysctl.h>
 
 static void *get_uts(ctl_table *table, int write)