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

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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

[[email protected]: topology.c fix]
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Ingo Molnar 2006-12-06 20:38:17 -08:00 • committed by Linus Torvalds
commit 0231606785
25 changed files with 8 additions and 56 deletions
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4
block/ll_rw_blk.c
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@ -3459,8 +3459,6 @@ static void blk_done_softirq(struct softirq_action *h)
}
}
#ifdef CONFIG_HOTPLUG_CPU
static int blk_cpu_notify(struct notifier_block *self, unsigned long action,
void *hcpu)
{
@ -3486,8 +3484,6 @@ static struct notifier_block __devinitdata blk_cpu_notifier = {
.notifier_call = blk_cpu_notify,
};
#endif /* CONFIG_HOTPLUG_CPU */
/**
* blk_complete_request - end I/O on a request
* @req: the request being processed