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authorIngo Molnar <mingo@elte.hu>2006-12-06 20:38:17 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 08:39:39 -0800
commit02316067852187b8bec781bec07410e91af79627 (patch)
tree856e3f4610c91a6548bf3bf5c70ecbc0b28a4145 /mm/swap.c
parenta38a44c1a93078fc5fadc4ac2df8dea4697069e2 (diff)
downloadlwn-02316067852187b8bec781bec07410e91af79627.tar.gz
lwn-02316067852187b8bec781bec07410e91af79627.zip
[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>
Diffstat (limited to 'mm/swap.c')
-rw-r--r--mm/swap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/swap.c b/mm/swap.c
index 017e72ca9bbb..2ed7be39795e 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -514,5 +514,7 @@ void __init swap_setup(void)
* Right now other parts of the system means that we
* _really_ don't want to cluster much more
*/
+#ifdef CONFIG_HOTPLUG_CPU
hotcpu_notifier(cpu_swap_callback, 0);
+#endif
}