[PATCH] hotplug CPU: clean up hotcpu_notifier() use

There was lots of #ifdef noise in the kernel due to hotcpu_notifier(fn,
prio) not correctly marking 'fn' as used in the !HOTPLUG_CPU case, and thus
generating compiler warnings of unused symbols, hence forcing people to add
#ifdefs.

the compiler can skip truly unused functions just fine:

    text    data     bss     dec     hex filename
 1624412  728710 3674856 6027978  5bfaca vmlinux.before
 1624412  728710 3674856 6027978  5bfaca vmlinux.after

[akpm@osdl.org: topology.c fix]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/arch/ia64/kernel/salinfo.c b/arch/ia64/kernel/salinfo.c
index e63b8ca5344a..fd607ca51a8d 100644
--- a/arch/ia64/kernel/salinfo.c
+++ b/arch/ia64/kernel/salinfo.c
@@ -575,7 +575,6 @@ static struct file_operations salinfo_data_fops = {
         .write   = salinfo_log_write,
 };
 
-#ifdef  CONFIG_HOTPLUG_CPU
 static int __devinit
 salinfo_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
 {
@@ -620,7 +619,6 @@ static struct notifier_block salinfo_cpu_notifier =
         .notifier_call = salinfo_cpu_callback,
         .priority = 0,
 };
-#endif  /* CONFIG_HOTPLUG_CPU */
 
 static int __init
 salinfo_init(void)