diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/context_tracking.h | 20 | ||||
| -rw-r--r-- | include/linux/rcutree.h | 3 |
2 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h index 01abadb2f993..1f568676bc1d 100644 --- a/include/linux/context_tracking.h +++ b/include/linux/context_tracking.h @@ -122,6 +122,26 @@ static inline void context_tracking_init(void) { } #ifdef CONFIG_CONTEXT_TRACKING_IDLE extern void ct_idle_enter(void); extern void ct_idle_exit(void); + +/* + * Is the current CPU in an extended quiescent state? + * + * No ordering, as we are sampling CPU-local information. + */ +static __always_inline bool rcu_dynticks_curr_cpu_in_eqs(void) +{ + return !(arch_atomic_read(this_cpu_ptr(&context_tracking.dynticks)) & 0x1); +} + +/* + * Increment the current CPU's context_tracking structure's ->dynticks field + * with ordering. Return the new value. + */ +static __always_inline unsigned long rcu_dynticks_inc(int incby) +{ + return arch_atomic_add_return(incby, this_cpu_ptr(&context_tracking.dynticks)); +} + #else static inline void ct_idle_enter(void) { } static inline void ct_idle_exit(void) { } diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index 4522b6a7cc42..24db1e41695c 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -55,6 +55,9 @@ void rcu_irq_exit_check_preempt(void); static inline void rcu_irq_exit_check_preempt(void) { } #endif +struct task_struct; +void rcu_preempt_deferred_qs(struct task_struct *t); + void exit_rcu(void); void rcu_scheduler_starting(void); |