linux-kernel - [PATCH tip/core/rcu 05/13] rcu: Remove rcu_preempt_process

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Message-Id: <1369061900-546-5-git-send-email-paulmck@linux.vnet.ibm.com>
Date:	Mon, 20 May 2013 07:58:12 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu,
	dhowells@...hat.com, edumazet@...gle.com, darren@...art.com,
	fweisbec@...il.com, sbw@....edu,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 05/13] rcu: Remove rcu_preempt_process_callbacks()

From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>

With the removal of CONFIG_TINY_PREEMPT_RCU, rcu_preempt_process_callbacks()
is now an empty function.  This commit therefore eliminates it by
inlining it.

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@...htriplett.org>
---
 kernel/rcutiny.c        | 1 -
 kernel/rcutiny_plugin.h | 8 --------
 2 files changed, 9 deletions(-)

diff --git a/kernel/rcutiny.c b/kernel/rcutiny.c
index 6f5a2a6..7fc2339 100644
--- a/kernel/rcutiny.c
+++ b/kernel/rcutiny.c
@@ -314,7 +314,6 @@ static void rcu_process_callbacks(struct softirq_action *unused)
 {
 	__rcu_process_callbacks(&rcu_sched_ctrlblk);
 	__rcu_process_callbacks(&rcu_bh_ctrlblk);
-	rcu_preempt_process_callbacks();
 }
 
 /*
diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h
index 8b835b9..bfe9924 100644
--- a/kernel/rcutiny_plugin.h
+++ b/kernel/rcutiny_plugin.h
@@ -102,14 +102,6 @@ static void check_cpu_stalls(void)
 	RCU_TRACE(check_cpu_stall_preempt());
 }
 
-/*
- * Because preemptible RCU does not exist, it never has any callbacks
- * to process.
- */
-static void rcu_preempt_process_callbacks(void)
-{
-}
-
 /* Hold off callback invocation until early_initcall() time. */
 static int rcu_scheduler_fully_active __read_mostly;
 
-- 
1.8.1.5

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