From 709fdce7545c978e69f52eb19082ea3af44332f5 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 3 Jul 2018 10:44:44 -0700 Subject: rcu: Express Tiny RCU updates in terms of RCU rather than RCU-sched This commit renames Tiny RCU functions so that the lowest level of functionality is RCU (e.g., synchronize_rcu()) rather than RCU-sched (e.g., synchronize_sched()). This provides greater naming compatibility with Tree RCU, which will in turn permit more LoC removal once the RCU-sched and RCU-bh update-side API is removed. Signed-off-by: Paul E. McKenney [ paulmck: Fix Tiny call_rcu()'s EXPORT_SYMBOL() in response to a bug report from kbuild test robot. ] --- include/linux/rcutiny.h | 34 +++++++++++++++++++--------------- 1 file changed, 19 insertions(+), 15 deletions(-) (limited to 'include/linux/rcutiny.h') diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index df2c0895c5e7..e66fb8bc2127 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -36,9 +36,9 @@ static inline int rcu_dynticks_snap(struct rcu_dynticks *rdtp) /* Never flag non-existent other CPUs! */ static inline bool rcu_eqs_special_set(int cpu) { return false; } -static inline void synchronize_rcu(void) +static inline void synchronize_sched(void) { - synchronize_sched(); + synchronize_rcu(); } static inline unsigned long get_state_synchronize_rcu(void) @@ -61,16 +61,11 @@ static inline void cond_synchronize_sched(unsigned long oldstate) might_sleep(); } -static inline void synchronize_rcu_expedited(void) -{ - synchronize_sched(); /* Only one CPU, so pretty fast anyway!!! */ -} +extern void rcu_barrier(void); -extern void rcu_barrier_sched(void); - -static inline void rcu_barrier(void) +static inline void rcu_barrier_sched(void) { - rcu_barrier_sched(); /* Only one CPU, so only one list of callbacks! */ + rcu_barrier(); /* Only one CPU, so only one list of callbacks! */ } static inline void rcu_barrier_bh(void) @@ -88,27 +83,36 @@ static inline void synchronize_rcu_bh_expedited(void) synchronize_sched(); } +static inline void synchronize_rcu_expedited(void) +{ + synchronize_sched(); +} + static inline void synchronize_sched_expedited(void) { synchronize_sched(); } -static inline void kfree_call_rcu(struct rcu_head *head, - rcu_callback_t func) +static inline void call_rcu_sched(struct rcu_head *head, rcu_callback_t func) +{ + call_rcu(head, func); +} + +static inline void kfree_call_rcu(struct rcu_head *head, rcu_callback_t func) { call_rcu(head, func); } -void rcu_sched_qs(void); +void rcu_qs(void); static inline void rcu_softirq_qs(void) { - rcu_sched_qs(); + rcu_qs(); } #define rcu_note_context_switch(preempt) \ do { \ - rcu_sched_qs(); \ + rcu_qs(); \ rcu_tasks_qs(current); \ } while (0) -- cgit v1.2.3