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Subject[tip:core/urgent] rcu: Clean up code to address Ingo's checkpatch feedback
Commit-ID:  9b2619aff0332e95ea5eb7a0d75b0208818d871c
Gitweb: http://git.kernel.org/tip/9b2619aff0332e95ea5eb7a0d75b0208818d871c
Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
AuthorDate: Wed, 23 Sep 2009 09:50:43 -0700
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Wed, 23 Sep 2009 19:46:30 +0200

rcu: Clean up code to address Ingo's checkpatch feedback

Move declarations and update storage classes to make checkpatch happy.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: akpm@linux-foundation.org
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <12537246441701-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>


---
include/linux/rcutree.h | 6 +++++-
kernel/rcupdate.c | 3 ---
kernel/rcutorture.c | 4 +---
kernel/rcutree.c | 23 -----------------------
kernel/rcutree.h | 26 +++++++++++++++++++++++++-
kernel/rcutree_trace.c | 12 ++++++------
6 files changed, 37 insertions(+), 37 deletions(-)
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index 19a3b06..46e9ab3 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -30,10 +30,14 @@
#ifndef __LINUX_RCUTREE_H
#define __LINUX_RCUTREE_H

+struct notifier_block;
+
extern void rcu_sched_qs(int cpu);
extern void rcu_bh_qs(int cpu);
-
+extern int rcu_cpu_notify(struct notifier_block *self,
+ unsigned long action, void *hcpu);
extern int rcu_needs_cpu(int cpu);
+extern int rcu_expedited_torture_stats(char *page);

#ifdef CONFIG_TREE_PREEMPT_RCU

diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index 37ac454..8e79513 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -259,9 +259,6 @@ static void rcu_migrate_callback(struct rcu_head *notused)
wake_up(&rcu_migrate_wq);
}

-extern int rcu_cpu_notify(struct notifier_block *self,
- unsigned long action, void *hcpu);
-
static int __cpuinit rcu_barrier_cpu_hotplug(struct notifier_block *self,
unsigned long action, void *hcpu)
{
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 233768f..697c0a0 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -606,8 +606,6 @@ static struct rcu_torture_ops sched_ops_sync = {
.name = "sched_sync"
};

-extern int rcu_expedited_torture_stats(char *page);
-
static struct rcu_torture_ops sched_expedited_ops = {
.init = rcu_sync_torture_init,
.cleanup = NULL,
@@ -650,7 +648,7 @@ rcu_torture_writer(void *arg)
old_rp = rcu_torture_current;
rp->rtort_mbtest = 1;
rcu_assign_pointer(rcu_torture_current, rp);
- smp_wmb();
+ smp_wmb(); /* Mods to old_rp must follow rcu_assign_pointer() */
if (old_rp) {
i = old_rp->rtort_pipe_count;
if (i > RCU_TORTURE_PIPE_LEN)
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 53a5ef0..8e52cde 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -81,29 +81,6 @@ DEFINE_PER_CPU(struct rcu_data, rcu_sched_data);
struct rcu_state rcu_bh_state = RCU_STATE_INITIALIZER(rcu_bh_state);
DEFINE_PER_CPU(struct rcu_data, rcu_bh_data);

-/* Forward declarations for rcutree_plugin.h */
-static inline void rcu_bootup_announce(void);
-long rcu_batches_completed(void);
-static void rcu_preempt_note_context_switch(int cpu);
-static int rcu_preempted_readers(struct rcu_node *rnp);
-#ifdef CONFIG_RCU_CPU_STALL_DETECTOR
-static void rcu_print_task_stall(struct rcu_node *rnp);
-#endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */
-static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp);
-#ifdef CONFIG_HOTPLUG_CPU
-static void rcu_preempt_offline_tasks(struct rcu_state *rsp,
- struct rcu_node *rnp,
- struct rcu_data *rdp);
-static void rcu_preempt_offline_cpu(int cpu);
-#endif /* #ifdef CONFIG_HOTPLUG_CPU */
-static void rcu_preempt_check_callbacks(int cpu);
-static void rcu_preempt_process_callbacks(void);
-void call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu));
-static int rcu_preempt_pending(int cpu);
-static int rcu_preempt_needs_cpu(int cpu);
-static void __cpuinit rcu_preempt_init_percpu_data(int cpu);
-static void __init __rcu_init_preempt(void);
-

/*
* Return true if an RCU grace period is in progress. The ACCESS_ONCE()s
diff --git a/kernel/rcutree.h b/kernel/rcutree.h
index a48d11f..e6ab31c 100644
--- a/kernel/rcutree.h
+++ b/kernel/rcutree.h
@@ -270,5 +270,29 @@ extern struct rcu_state rcu_preempt_state;
DECLARE_PER_CPU(struct rcu_data, rcu_preempt_data);
#endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */

-#endif /* #ifdef RCU_TREE_NONCORE */
+#else /* #ifdef RCU_TREE_NONCORE */

+/* Forward declarations for rcutree_plugin.h */
+static inline void rcu_bootup_announce(void);
+long rcu_batches_completed(void);
+static void rcu_preempt_note_context_switch(int cpu);
+static int rcu_preempted_readers(struct rcu_node *rnp);
+#ifdef CONFIG_RCU_CPU_STALL_DETECTOR
+static void rcu_print_task_stall(struct rcu_node *rnp);
+#endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */
+static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp);
+#ifdef CONFIG_HOTPLUG_CPU
+static void rcu_preempt_offline_tasks(struct rcu_state *rsp,
+ struct rcu_node *rnp,
+ struct rcu_data *rdp);
+static void rcu_preempt_offline_cpu(int cpu);
+#endif /* #ifdef CONFIG_HOTPLUG_CPU */
+static void rcu_preempt_check_callbacks(int cpu);
+static void rcu_preempt_process_callbacks(void);
+void call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu));
+static int rcu_preempt_pending(int cpu);
+static int rcu_preempt_needs_cpu(int cpu);
+static void __cpuinit rcu_preempt_init_percpu_data(int cpu);
+static void __init __rcu_init_preempt(void);
+
+#endif /* #else #ifdef RCU_TREE_NONCORE */
diff --git a/kernel/rcutree_trace.c b/kernel/rcutree_trace.c
index c89f5e9..f09af28 100644
--- a/kernel/rcutree_trace.c
+++ b/kernel/rcutree_trace.c
@@ -93,7 +93,7 @@ static int rcudata_open(struct inode *inode, struct file *file)
return single_open(file, show_rcudata, NULL);
}

-static struct file_operations rcudata_fops = {
+static const struct file_operations rcudata_fops = {
.owner = THIS_MODULE,
.open = rcudata_open,
.read = seq_read,
@@ -145,7 +145,7 @@ static int rcudata_csv_open(struct inode *inode, struct file *file)
return single_open(file, show_rcudata_csv, NULL);
}

-static struct file_operations rcudata_csv_fops = {
+static const struct file_operations rcudata_csv_fops = {
.owner = THIS_MODULE,
.open = rcudata_csv_open,
.read = seq_read,
@@ -159,7 +159,7 @@ static void print_one_rcu_state(struct seq_file *m, struct rcu_state *rsp)
struct rcu_node *rnp;

seq_printf(m, "c=%ld g=%ld s=%d jfq=%ld j=%x "
- "nfqs=%lu/nfqsng=%lu(%lu) fqlh=%lu\n",
+ "nfqs=%lu/nfqsng=%lu(%lu) fqlh=%lu\n",
rsp->completed, rsp->gpnum, rsp->signaled,
(long)(rsp->jiffies_force_qs - jiffies),
(int)(jiffies & 0xffff),
@@ -196,7 +196,7 @@ static int rcuhier_open(struct inode *inode, struct file *file)
return single_open(file, show_rcuhier, NULL);
}

-static struct file_operations rcuhier_fops = {
+static const struct file_operations rcuhier_fops = {
.owner = THIS_MODULE,
.open = rcuhier_open,
.read = seq_read,
@@ -222,7 +222,7 @@ static int rcugp_open(struct inode *inode, struct file *file)
return single_open(file, show_rcugp, NULL);
}

-static struct file_operations rcugp_fops = {
+static const struct file_operations rcugp_fops = {
.owner = THIS_MODULE,
.open = rcugp_open,
.read = seq_read,
@@ -276,7 +276,7 @@ static int rcu_pending_open(struct inode *inode, struct file *file)
return single_open(file, show_rcu_pending, NULL);
}

-static struct file_operations rcu_pending_fops = {
+static const struct file_operations rcu_pending_fops = {
.owner = THIS_MODULE,
.open = rcu_pending_open,
.read = seq_read,

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