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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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2
drivers/base/topology.c
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@ -108,7 +108,6 @@ static int __cpuinit topology_add_dev(unsigned int cpu)
return rc;
}
#ifdef CONFIG_HOTPLUG_CPU
static void __cpuinit topology_remove_dev(unsigned int cpu)
{
struct sys_device *sys_dev = get_cpu_sysdev(cpu);
@ -136,7 +135,6 @@ static int __cpuinit topology_cpu_callback(struct notifier_block *nfb,
}
return rc ? NOTIFY_BAD : NOTIFY_OK;
}
#endif
static int __cpuinit topology_sysfs_init(void)
{