[PATCH] Move cpu notifiers et al to cpu.h

Trivial patch: when these were introduced cpu.h didn't exist.

fs/buffer.c

@@ -36,6 +36,7 @@
 #include <linux/buffer_head.h>
 #include <linux/bio.h>
 #include <linux/notifier.h>
+#include <linux/cpu.h>
 #include <asm/bitops.h>
 
 static void invalidate_bh_lrus(void);

include/linux/cpu.h

@@ -31,6 +31,24 @@ struct cpu {
 extern int register_cpu(struct cpu *, int, struct node *);
 extern struct class cpu_class;
 
+struct notifier_block;
+
+#ifdef CONFIG_SMP
+/* Need to know about CPUs going up/down? */
+extern int register_cpu_notifier(struct notifier_block *nb);
+extern void unregister_cpu_notifier(struct notifier_block *nb);
+
+int cpu_up(unsigned int cpu);
+#else
+static inline int register_cpu_notifier(struct notifier_block *nb)
+{
+	return 0;
+}
+static inline void unregister_cpu_notifier(struct notifier_block *nb)
+{
+}
+#endif /* CONFIG_SMP */
+
 /* Stop CPUs going up and down. */
 extern struct semaphore cpucontrol;
 #endif /* _LINUX_CPU_H_ */

include/linux/smp.h

@@ -84,14 +84,6 @@ extern int smp_threads_ready;
 #define MSG_RESCHEDULE		0x0003	/* Reschedule request from master CPU*/
 #define MSG_CALL_FUNCTION       0x0004  /* Call function on all other CPUs */
 
-struct notifier_block;
-
-/* Need to know about CPUs going up/down? */
-extern int register_cpu_notifier(struct notifier_block *nb);
-extern void unregister_cpu_notifier(struct notifier_block *nb);
-
-int cpu_up(unsigned int cpu);
-
 /*
  * Mark the boot cpu "online" so that it can call console drivers in
  * printk() and can access its per-cpu storage.
@@ -117,16 +109,6 @@ static inline void smp_send_reschedule(int cpu) { }
 #define cpu_possible(cpu)			({ BUG_ON((cpu) != 0); 1; })
 #define smp_prepare_boot_cpu()			do {} while (0)
 
-struct notifier_block;
-
-/* Need to know about CPUs going up/down? */
-static inline int register_cpu_notifier(struct notifier_block *nb)
-{
-	return 0;
-}
-static inline void unregister_cpu_notifier(struct notifier_block *nb)
-{
-}
 #endif /* !SMP */
 
 #define get_cpu()		({ preempt_disable(); smp_processor_id(); })

init/main.c

@@ -37,6 +37,7 @@
 #include <linux/rcupdate.h>
 #include <linux/moduleparam.h>
 #include <linux/writeback.h>
+#include <linux/cpu.h>
 
 #include <asm/io.h>
 #include <asm/bugs.h>

kernel/cpu.c

@@ -8,6 +8,7 @@
 #include <linux/notifier.h>
 #include <linux/sched.h>
 #include <linux/unistd.h>
+#include <linux/cpu.h>
 #include <asm/semaphore.h>
 
 /* This protects CPUs going up and down... */

kernel/rcupdate.c

@@ -43,6 +43,7 @@
 #include <linux/percpu.h>
 #include <linux/notifier.h>
 #include <linux/rcupdate.h>
+#include <linux/cpu.h>
 
 /* Definition for rcupdate control block. */
 struct rcu_ctrlblk rcu_ctrlblk = 

kernel/sched.c

@@ -32,6 +32,7 @@
 #include <linux/delay.h>
 #include <linux/timer.h>
 #include <linux/rcupdate.h>
+#include <linux/cpu.h>
 
 #ifdef CONFIG_NUMA
 #define cpu_to_node_mask(cpu) node_to_cpumask(cpu_to_node(cpu))

kernel/softirq.c

@@ -14,6 +14,7 @@
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/notifier.h>
+#include <linux/cpu.h>
 
 /*
    - No shared variables, all the data are CPU local.

kernel/timer.c

@@ -29,6 +29,7 @@
 #include <linux/thread_info.h>
 #include <linux/time.h>
 #include <linux/jiffies.h>
+#include <linux/cpu.h>
 
 #include <asm/uaccess.h>
 #include <asm/div64.h>

mm/page-writeback.c

@@ -27,6 +27,7 @@
 #include <linux/notifier.h>
 #include <linux/smp.h>
 #include <linux/sysctl.h>
+#include <linux/cpu.h>
 
 /*
  * The maximum number of pages to writeout in a single bdflush/kupdate

mm/page_alloc.c

@@ -30,6 +30,7 @@
 #include <linux/notifier.h>
 #include <linux/topology.h>
 #include <linux/sysctl.h>
+#include <linux/cpu.h>
 
 DECLARE_BITMAP(node_online_map, MAX_NUMNODES);
 DECLARE_BITMAP(memblk_online_map, MAX_NR_MEMBLKS);

mm/slab.c

@@ -88,6 +88,7 @@
 #include	<linux/seq_file.h>
 #include	<linux/notifier.h>
 #include	<linux/kallsyms.h>
+#include	<linux/cpu.h>
 #include	<asm/uaccess.h>
 
 /*