linux-kernel - [PATCH tip/core/rcu 06/15] rcu: Move rcu.h to new trivial-function style

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Message-Id: <1500932684-10469-6-git-send-email-paulmck@linux.vnet.ibm.com>
Date:   Mon, 24 Jul 2017 14:44:35 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 06/15] rcu: Move rcu.h to new trivial-function style

This commit saves a few lines in kernel/rcu/rcu.h by moving to single-line
definitions for trivial functions, instead of the old style where the
two curly braces each get their own line.

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---
 kernel/rcu/rcu.h | 128 +++++++++----------------------------------------------
 1 file changed, 20 insertions(+), 108 deletions(-)

diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h
index 808b8c85f626..e4b43fef89f5 100644
--- a/kernel/rcu/rcu.h
+++ b/kernel/rcu/rcu.h
@@ -356,22 +356,10 @@ do {									\
 
 #ifdef CONFIG_TINY_RCU
 /* Tiny RCU doesn't expedite, as its purpose in life is instead to be tiny. */
-static inline bool rcu_gp_is_normal(void)  /* Internal RCU use. */
-{
-	return true;
-}
-static inline bool rcu_gp_is_expedited(void)  /* Internal RCU use. */
-{
-	return false;
-}
-
-static inline void rcu_expedite_gp(void)
-{
-}
-
-static inline void rcu_unexpedite_gp(void)
-{
-}
+static inline bool rcu_gp_is_normal(void) { return true; }
+static inline bool rcu_gp_is_expedited(void) { return false; }
+static inline void rcu_expedite_gp(void) { }
+static inline void rcu_unexpedite_gp(void) { }
 #else /* #ifdef CONFIG_TINY_RCU */
 bool rcu_gp_is_normal(void);     /* Internal RCU use. */
 bool rcu_gp_is_expedited(void);  /* Internal RCU use. */
@@ -419,12 +407,8 @@ static inline void rcutorture_get_gp_data(enum rcutorture_type test_type,
 	*gpnum = 0;
 	*completed = 0;
 }
-static inline void rcutorture_record_test_transition(void)
-{
-}
-static inline void rcutorture_record_progress(unsigned long vernum)
-{
-}
+static inline void rcutorture_record_test_transition(void) { }
+static inline void rcutorture_record_progress(unsigned long vernum) { }
 #ifdef CONFIG_RCU_TRACE
 void do_trace_rcu_torture_read(const char *rcutorturename,
 			       struct rcu_head *rhp,
@@ -460,92 +444,20 @@ void srcutorture_get_gp_data(enum rcutorture_type test_type,
 #endif
 
 #ifdef CONFIG_TINY_RCU
-
-/*
- * Return the number of grace periods started.
- */
-static inline unsigned long rcu_batches_started(void)
-{
-	return 0;
-}
-
-/*
- * Return the number of bottom-half grace periods started.
- */
-static inline unsigned long rcu_batches_started_bh(void)
-{
-	return 0;
-}
-
-/*
- * Return the number of sched grace periods started.
- */
-static inline unsigned long rcu_batches_started_sched(void)
-{
-	return 0;
-}
-
-/*
- * Return the number of grace periods completed.
- */
-static inline unsigned long rcu_batches_completed(void)
-{
-	return 0;
-}
-
-/*
- * Return the number of bottom-half grace periods completed.
- */
-static inline unsigned long rcu_batches_completed_bh(void)
-{
-	return 0;
-}
-
-/*
- * Return the number of sched grace periods completed.
- */
-static inline unsigned long rcu_batches_completed_sched(void)
-{
-	return 0;
-}
-
-/*
- * Return the number of expedited grace periods completed.
- */
-static inline unsigned long rcu_exp_batches_completed(void)
-{
-	return 0;
-}
-
-/*
- * Return the number of expedited sched grace periods completed.
- */
-static inline unsigned long rcu_exp_batches_completed_sched(void)
-{
-	return 0;
-}
-
-static inline unsigned long srcu_batches_completed(struct srcu_struct *sp)
-{
-	return 0;
-}
-
-static inline void rcu_force_quiescent_state(void)
-{
-}
-
-static inline void rcu_bh_force_quiescent_state(void)
-{
-}
-
-static inline void rcu_sched_force_quiescent_state(void)
-{
-}
-
-static inline void show_rcu_gp_kthreads(void)
-{
-}
-
+static inline unsigned long rcu_batches_started(void) { return 0; }
+static inline unsigned long rcu_batches_started_bh(void) { return 0; }
+static inline unsigned long rcu_batches_started_sched(void) { return 0; }
+static inline unsigned long rcu_batches_completed(void) { return 0; }
+static inline unsigned long rcu_batches_completed_bh(void) { return 0; }
+static inline unsigned long rcu_batches_completed_sched(void) { return 0; }
+static inline unsigned long rcu_exp_batches_completed(void) { return 0; }
+static inline unsigned long rcu_exp_batches_completed_sched(void) { return 0; }
+static inline unsigned long
+srcu_batches_completed(struct srcu_struct *sp) { return 0; }
+static inline void rcu_force_quiescent_state(void) { }
+static inline void rcu_bh_force_quiescent_state(void) { }
+static inline void rcu_sched_force_quiescent_state(void) { }
+static inline void show_rcu_gp_kthreads(void) { }
 #else /* #ifdef CONFIG_TINY_RCU */
 extern unsigned long rcutorture_testseq;
 extern unsigned long rcutorture_vernum;
-- 
2.5.2