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From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com,
	akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
	josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
	rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
	dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com,
	bobby.prani@gmail.com,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [PATCH v2 tip/core/rcu 08/14] rcu: Eliminate unused rcu_init_one() argument
Date: Wed,  9 Dec 2015 15:10:06 -0800	[thread overview]
Message-ID: <1449702612-1661-8-git-send-email-paulmck@linux.vnet.ibm.com> (raw)
In-Reply-To: <20151209230940.GA1251@linux.vnet.ibm.com>

Now that the rcu_state structure's ->rda field is compile-time initialized,
there is no need to pass the per-CPU rcu_data structure into rcu_init_one().
This commit therefore eliminates this now-unused parameter.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
 kernel/rcu/tree.c        | 7 +++----
 kernel/rcu/tree_plugin.h | 2 +-
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 93941d3434ad..9a4c8c0653ff 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -4351,8 +4351,7 @@ static void __init rcu_init_levelspread(int *levelspread, const int *levelcnt)
 /*
  * Helper function for rcu_init() that initializes one rcu_state structure.
  */
-static void __init rcu_init_one(struct rcu_state *rsp,
-		struct rcu_data __percpu *rda)
+static void __init rcu_init_one(struct rcu_state *rsp)
 {
 	static const char * const buf[] = RCU_NODE_NAME_INIT;
 	static const char * const fqs[] = RCU_FQS_NAME_INIT;
@@ -4545,8 +4544,8 @@ void __init rcu_init(void)
 
 	rcu_bootup_announce();
 	rcu_init_geometry();
-	rcu_init_one(&rcu_bh_state, &rcu_bh_data);
-	rcu_init_one(&rcu_sched_state, &rcu_sched_data);
+	rcu_init_one(&rcu_bh_state);
+	rcu_init_one(&rcu_sched_state);
 	if (dump_tree)
 		rcu_dump_rcu_node_tree(&rcu_sched_state);
 	__rcu_init_preempt();
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index e6da888cc908..fccef5d4b198 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -777,7 +777,7 @@ EXPORT_SYMBOL_GPL(rcu_barrier);
  */
 static void __init __rcu_init_preempt(void)
 {
-	rcu_init_one(rcu_state_p, rcu_data_p);
+	rcu_init_one(rcu_state_p);
 }
 
 /*
-- 
2.5.2


  parent reply	other threads:[~2015-12-09 23:10 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-09 23:09 [PATCH v2 tip/core/rcu 0/14] Miscellaneous fixes for 4.5 Paul E. McKenney
2015-12-09 23:09 ` [PATCH v2 tip/core/rcu 01/14] rcu: Move lock_class_key to local scope Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 02/14] kernel: Make rcu/tree_trace.c explicitly non-modular Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 03/14] rcu: Simplify rcu_sched_qs() control flow Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 04/14] rcu: Remove lock-acquisition loop from rcu_read_unlock_special() Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 05/14] rcu: Fix obsolete rcu_bootup_announce_oddness() comment Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 06/14] rcu: Avoid tick_nohz_active checks on NOCBs CPUs Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 07/14] rcu: Stop disabling interrupts in scheduler fastpaths Paul E. McKenney
2015-12-09 23:10 ` Paul E. McKenney [this message]
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 09/14] rcu: Make cpu_needs_another_gp() be bool Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 10/14] rcu: Don't redundantly disable irqs in rcu_irq_{enter,exit}() Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 11/14] rcu: Fix comment for rcu_dereference_raw_notrace Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 12/14] rcu: Move wakeup out from under rnp->lock Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 13/14] rcu: Make rcu_gp_init() be bool rather than int Paul E. McKenney
2015-12-09 23:10 ` [PATCH v2 tip/core/rcu 14/14] list: Add lockless list traversal primitives Paul E. McKenney

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