diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cpu.c | 4 | ||||
| -rw-r--r-- | kernel/exit.c | 2 | ||||
| -rw-r--r-- | kernel/irq/manage.c | 11 | ||||
| -rw-r--r-- | kernel/power/Kconfig | 41 | ||||
| -rw-r--r-- | kernel/signal.c | 19 | ||||
| -rw-r--r-- | kernel/sys.c | 3 | ||||
| -rw-r--r-- | kernel/user_namespace.c | 1 |
7 files changed, 49 insertions, 32 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index 181ae708602..38033db8d8e 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -273,7 +273,7 @@ int __cpuinit cpu_up(unsigned int cpu) return err; } -#ifdef CONFIG_SUSPEND_SMP +#ifdef CONFIG_PM_SLEEP_SMP static cpumask_t frozen_cpus; int disable_nonboot_cpus(void) @@ -334,4 +334,4 @@ void enable_nonboot_cpus(void) out: mutex_unlock(&cpu_add_remove_lock); } -#endif +#endif /* CONFIG_PM_SLEEP_SMP */ diff --git a/kernel/exit.c b/kernel/exit.c index 9578c1ae19c..06b24b3aa37 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -975,6 +975,7 @@ fastcall NORET_TYPE void do_exit(long code) if (unlikely(tsk->audit_context)) audit_free(tsk); + tsk->exit_code = code; taskstats_exit(tsk, group_dead); exit_mm(tsk); @@ -996,7 +997,6 @@ fastcall NORET_TYPE void do_exit(long code) if (tsk->binfmt) module_put(tsk->binfmt->module); - tsk->exit_code = code; proc_exit_connector(tsk); exit_task_namespaces(tsk); exit_notify(tsk); diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 853aefbd184..7230d914eaa 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -547,14 +547,11 @@ int request_irq(unsigned int irq, irq_handler_t handler, * We do this before actually registering it, to make sure that * a 'real' IRQ doesn't run in parallel with our fake */ - if (irqflags & IRQF_DISABLED) { - unsigned long flags; + unsigned long flags; - local_irq_save(flags); - handler(irq, dev_id); - local_irq_restore(flags); - } else - handler(irq, dev_id); + local_irq_save(flags); + handler(irq, dev_id); + local_irq_restore(flags); } #endif diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 412859f8d94..c8580a1e687 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -72,15 +72,10 @@ config PM_TRACE CAUTION: this option will cause your machine's real-time clock to be set to an invalid time after a resume. -config SUSPEND_SMP_POSSIBLE - bool - depends on (X86 && !X86_VOYAGER) || (PPC64 && (PPC_PSERIES || PPC_PMAC)) - depends on SMP - default y - -config SUSPEND_SMP +config PM_SLEEP_SMP bool - depends on SUSPEND_SMP_POSSIBLE && PM_SLEEP + depends on SUSPEND_SMP_POSSIBLE || HIBERNATION_SMP_POSSIBLE + depends on PM_SLEEP select HOTPLUG_CPU default y @@ -89,20 +84,46 @@ config PM_SLEEP depends on SUSPEND || HIBERNATION default y +config SUSPEND_UP_POSSIBLE + bool + depends on (X86 && !X86_VOYAGER) || PPC || ARM || BLACKFIN || MIPS \ + || SUPERH || FRV + depends on !SMP + default y + +config SUSPEND_SMP_POSSIBLE + bool + depends on (X86 && !X86_VOYAGER) \ + || (PPC && (PPC_PSERIES || PPC_PMAC)) || ARM + depends on SMP + default y + config SUSPEND bool "Suspend to RAM and standby" depends on PM - depends on !SMP || SUSPEND_SMP_POSSIBLE + depends on SUSPEND_UP_POSSIBLE || SUSPEND_SMP_POSSIBLE default y ---help--- Allow the system to enter sleep states in which main memory is powered and thus its contents are preserved, such as the suspend-to-RAM state (i.e. the ACPI S3 state). +config HIBERNATION_UP_POSSIBLE + bool + depends on X86 || PPC64_SWSUSP || FRV || PPC32 + depends on !SMP + default y + +config HIBERNATION_SMP_POSSIBLE + bool + depends on (X86 && !X86_VOYAGER) || PPC64_SWSUSP + depends on SMP + default y + config HIBERNATION bool "Hibernation (aka 'suspend to disk')" depends on PM && SWAP - depends on ((X86 || PPC64_SWSUSP || FRV || PPC32) && !SMP) || SUSPEND_SMP_POSSIBLE + depends on HIBERNATION_UP_POSSIBLE || HIBERNATION_SMP_POSSIBLE ---help--- Enable the suspend to disk (STD) functionality, which is usually called "hibernation" in user interfaces. STD checkpoints the diff --git a/kernel/signal.c b/kernel/signal.c index ad63109e413..3169bed0b4d 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1300,20 +1300,19 @@ struct sigqueue *sigqueue_alloc(void) void sigqueue_free(struct sigqueue *q) { unsigned long flags; + spinlock_t *lock = ¤t->sighand->siglock; + BUG_ON(!(q->flags & SIGQUEUE_PREALLOC)); /* * If the signal is still pending remove it from the - * pending queue. + * pending queue. We must hold ->siglock while testing + * q->list to serialize with collect_signal(). */ - if (unlikely(!list_empty(&q->list))) { - spinlock_t *lock = ¤t->sighand->siglock; - read_lock(&tasklist_lock); - spin_lock_irqsave(lock, flags); - if (!list_empty(&q->list)) - list_del_init(&q->list); - spin_unlock_irqrestore(lock, flags); - read_unlock(&tasklist_lock); - } + spin_lock_irqsave(lock, flags); + if (!list_empty(&q->list)) + list_del_init(&q->list); + spin_unlock_irqrestore(lock, flags); + q->flags &= ~SIGQUEUE_PREALLOC; __sigqueue_free(q); } diff --git a/kernel/sys.c b/kernel/sys.c index 449b81b98b3..1b33b05d346 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1442,7 +1442,6 @@ asmlinkage long sys_times(struct tms __user * tbuf) * Auch. Had to add the 'did_exec' flag to conform completely to POSIX. * LBT 04.03.94 */ - asmlinkage long sys_setpgid(pid_t pid, pid_t pgid) { struct task_struct *p; @@ -1470,7 +1469,7 @@ asmlinkage long sys_setpgid(pid_t pid, pid_t pgid) if (!thread_group_leader(p)) goto out; - if (p->real_parent == group_leader) { + if (p->real_parent->tgid == group_leader->tgid) { err = -EPERM; if (task_session(p) != task_session(group_leader)) goto out; diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index d055d987850..85af9422ea6 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -81,6 +81,7 @@ void free_user_ns(struct kref *kref) struct user_namespace *ns; ns = container_of(kref, struct user_namespace, kref); + free_uid(ns->root_user); kfree(ns); } |