Avoid warning when CPU hotplug isn't enabled
authorLinus Torvalds <torvalds@linux-foundation.org>
Thu, 27 May 2010 17:32:08 +0000 (10:32 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 27 May 2010 17:32:08 +0000 (10:32 -0700)
commit00b9b0af5887fed54e899e3b7f5c2ccf5e739def
tree088cd96759cf4c1b2365c0e434dc95a8410b547c
parente2e2400bd4faee24d11872134b7ae5bd363749c0
Avoid warning when CPU hotplug isn't enabled

Commit e9fb7631ebcd ("cpu-hotplug: introduce cpu_notify(),
__cpu_notify(), cpu_notify_nofail()") also introduced this annoying
warning:

  kernel/cpu.c:157: warning: 'cpu_notify_nofail' defined but not used

when CONFIG_HOTPLUG_CPU wasn't set.

So move that helper inside the #ifdef CONFIG_HOTPLUG_CPU region, and
simplify it while at it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/cpu.c