[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/palinfo.c b/arch/ia64/kernel/palinfo.c
index 0b546e2b36ac..c4c10a0b99d9 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -952,7 +952,6 @@ remove_palinfo_proc_entries(unsigned int hcpu)
         }
 }
 
-#ifdef CONFIG_HOTPLUG_CPU
 static int palinfo_cpu_callback(struct notifier_block *nfb,
                                         unsigned long action, void *hcpu)
 {
@@ -974,7 +973,6 @@ static struct notifier_block palinfo_cpu_notifier =
         .notifier_call = palinfo_cpu_callback,
         .priority = 0,
 };
-#endif
 
 static int __init
 palinfo_init(void)