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-rw-r--r--include/linux/rcupdate.h21
1 files changed, 17 insertions, 4 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 115ead2b5155..7c968e4f929e 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -191,6 +191,21 @@ extern void rcu_idle_enter(void);
191extern void rcu_idle_exit(void); 191extern void rcu_idle_exit(void);
192extern void rcu_irq_enter(void); 192extern void rcu_irq_enter(void);
193extern void rcu_irq_exit(void); 193extern void rcu_irq_exit(void);
194
195#ifdef CONFIG_RCU_USER_QS
196extern void rcu_user_enter(void);
197extern void rcu_user_exit(void);
198extern void rcu_user_enter_after_irq(void);
199extern void rcu_user_exit_after_irq(void);
200extern void rcu_user_hooks_switch(struct task_struct *prev,
201 struct task_struct *next);
202#else
203static inline void rcu_user_enter(void) { }
204static inline void rcu_user_exit(void) { }
205static inline void rcu_user_enter_after_irq(void) { }
206static inline void rcu_user_exit_after_irq(void) { }
207#endif /* CONFIG_RCU_USER_QS */
208
194extern void exit_rcu(void); 209extern void exit_rcu(void);
195 210
196/** 211/**
@@ -210,14 +225,12 @@ extern void exit_rcu(void);
210 * to nest RCU_NONIDLE() wrappers, but the nesting level is currently 225 * to nest RCU_NONIDLE() wrappers, but the nesting level is currently
211 * quite limited. If deeper nesting is required, it will be necessary 226 * quite limited. If deeper nesting is required, it will be necessary
212 * to adjust DYNTICK_TASK_NESTING_VALUE accordingly. 227 * to adjust DYNTICK_TASK_NESTING_VALUE accordingly.
213 *
214 * This macro may be used from process-level code only.
215 */ 228 */
216#define RCU_NONIDLE(a) \ 229#define RCU_NONIDLE(a) \
217 do { \ 230 do { \
218 rcu_idle_exit(); \ 231 rcu_irq_enter(); \
219 do { a; } while (0); \ 232 do { a; } while (0); \
220 rcu_idle_enter(); \ 233 rcu_irq_exit(); \
221 } while (0) 234 } while (0)
222 235
223/* 236/*