diff options
Diffstat (limited to 'include/linux/hardirq.h')
| -rw-r--r-- | include/linux/hardirq.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index 7803014f3a1..8d302298a16 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -79,6 +79,19 @@ #endif #ifdef CONFIG_PREEMPT +# define PREEMPT_CHECK_OFFSET 1 +#else +# define PREEMPT_CHECK_OFFSET 0 +#endif + +/* + * Check whether we were atomic before we did preempt_disable(): + * (used by the scheduler) + */ +#define in_atomic_preempt_off() \ + ((preempt_count() & ~PREEMPT_ACTIVE) != PREEMPT_CHECK_OFFSET) + +#ifdef CONFIG_PREEMPT # define preemptible() (preempt_count() == 0 && !irqs_disabled()) # define IRQ_EXIT_OFFSET (HARDIRQ_OFFSET-1) #else |