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Diffstat (limited to 'include/linux/sched.h')
-rw-r--r--include/linux/sched.h37
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);