diff options
Diffstat (limited to 'include/linux/smp.h')
| -rw-r--r-- | include/linux/smp.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/smp.h b/include/linux/smp.h index d0adb7898d54..10530d92c04b 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -109,6 +109,15 @@ void on_each_cpu_mask(const struct cpumask *mask, smp_call_func_t func, void *info, bool wait); /* + * Call a function on each processor for which the supplied function + * cond_func returns a positive value. This may include the local + * processor. + */ +void on_each_cpu_cond(bool (*cond_func)(int cpu, void *info), + smp_call_func_t func, void *info, bool wait, + gfp_t gfp_flags); + +/* * Mark the boot cpu "online" so that it can call console drivers in * printk() and can access its per-cpu storage. */ @@ -153,6 +162,21 @@ static inline int up_smp_call_function(smp_call_func_t func, void *info) local_irq_enable(); \ } \ } while (0) +/* + * Preemption is disabled here to make sure the cond_func is called under the + * same condtions in UP and SMP. + */ +#define on_each_cpu_cond(cond_func, func, info, wait, gfp_flags)\ + do { \ + void *__info = (info); \ + preempt_disable(); \ + if ((cond_func)(0, __info)) { \ + local_irq_disable(); \ + (func)(__info); \ + local_irq_enable(); \ + } \ + preempt_enable(); \ + } while (0) static inline void smp_send_reschedule(int cpu) { } #define num_booting_cpus() 1 |