diff options
Diffstat (limited to 'include/linux/stop_machine.h')
| -rw-r--r-- | include/linux/stop_machine.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/include/linux/stop_machine.h b/include/linux/stop_machine.h index 092dc9b1ce7d..2d04ea916760 100644 --- a/include/linux/stop_machine.h +++ b/include/linux/stop_machine.h @@ -94,7 +94,7 @@ static inline int try_stop_cpus(const struct cpumask *cpumask, * stop_machine "Bogolock": stop the entire machine, disable * interrupts. This is a very heavy lock, which is equivalent to * grabbing every spinlock (and more). So the "read" side to such a - * lock is anything which disables preeempt. + * lock is anything which disables preemption. */ #if defined(CONFIG_STOP_MACHINE) && defined(CONFIG_SMP) @@ -124,15 +124,19 @@ int stop_machine(int (*fn)(void *), void *data, const struct cpumask *cpus); */ int __stop_machine(int (*fn)(void *), void *data, const struct cpumask *cpus); +int stop_machine_from_inactive_cpu(int (*fn)(void *), void *data, + const struct cpumask *cpus); + #else /* CONFIG_STOP_MACHINE && CONFIG_SMP */ static inline int __stop_machine(int (*fn)(void *), void *data, const struct cpumask *cpus) { + unsigned long flags; int ret; - local_irq_disable(); + local_irq_save(flags); ret = fn(data); - local_irq_enable(); + local_irq_restore(flags); return ret; } @@ -142,5 +146,11 @@ static inline int stop_machine(int (*fn)(void *), void *data, return __stop_machine(fn, data, cpus); } +static inline int stop_machine_from_inactive_cpu(int (*fn)(void *), void *data, + const struct cpumask *cpus) +{ + return __stop_machine(fn, data, cpus); +} + #endif /* CONFIG_STOP_MACHINE && CONFIG_SMP */ #endif /* _LINUX_STOP_MACHINE */ |