diff options
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 3ab08e4bb6b8..d7f98f637a2a 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1210,6 +1210,13 @@ struct task_struct { int rcu_flipctr_idx; #endif /* #ifdef CONFIG_PREEMPT_RCU */ +#ifdef CONFIG_TREE_PREEMPT_RCU + int rcu_read_lock_nesting; + char rcu_read_unlock_special; + int rcu_blocked_cpu; + struct list_head rcu_node_entry; +#endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */ + #if defined(CONFIG_SCHEDSTATS) || defined(CONFIG_TASK_DELAY_ACCT) struct sched_info sched_info; #endif @@ -1723,6 +1730,36 @@ extern cputime_t task_gtime(struct task_struct *p); #define tsk_used_math(p) ((p)->flags & PF_USED_MATH) #define used_math() tsk_used_math(current) +#ifdef CONFIG_TREE_PREEMPT_RCU + +#define RCU_READ_UNLOCK_BLOCKED (1 << 0) /* blocked while in RCU read-side. */ +#define RCU_READ_UNLOCK_NEED_QS (1 << 1) /* RCU core needs CPU response. */ +#define RCU_READ_UNLOCK_GOT_QS (1 << 2) /* CPU has responded to RCU core. */ + +static inline void rcu_copy_process(struct task_struct *p) +{ + p->rcu_read_lock_nesting = 0; + p->rcu_read_unlock_special = 0; + p->rcu_blocked_cpu = -1; + INIT_LIST_HEAD(&p->rcu_node_entry); +} + +#elif defined(CONFIG_PREEMPT_RCU) + +static inline void rcu_copy_process(struct task_struct *p) +{ + p->rcu_read_lock_nesting = 0; + p->rcu_flipctr_idx = 0; +} + +#else + +static inline void rcu_copy_process(struct task_struct *p) +{ +} + +#endif + #ifdef CONFIG_SMP extern int set_cpus_allowed_ptr(struct task_struct *p, const struct cpumask *new_mask); |