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SubjectRe: [patch, -rc6] x86_64: UP build fixes
Date
On Thursday 16 November 2006 09:48, Ingo Molnar wrote:

> arch/x86_64/kernel/vsyscall.c: In function 'cpu_vsyscall_notifier':
> arch/x86_64/kernel/vsyscall.c:282: warning: implicit declaration of function 'smp_call_function_single'
> arch/x86_64/kernel/vsyscall.c: At top level:
> arch/x86_64/kernel/vsyscall.c:279: warning: 'cpu_vsyscall_notifier' defined but not used


Oops. My fault indeed.

Here's a simpler patch to fix it.

-Andi

Fix vsyscall.c compilation on UP

Broken by earlier patch by me.

Index: linux/arch/x86_64/kernel/vsyscall.c
===================================================================
--- linux.orig/arch/x86_64/kernel/vsyscall.c
+++ linux/arch/x86_64/kernel/vsyscall.c
@@ -274,6 +274,7 @@ static void __cpuinit cpu_vsyscall_init(
vsyscall_set_cpu(raw_smp_processor_id());
}

+#ifdef CONFIG_HOTPLUG_CPU
static int __cpuinit
cpu_vsyscall_notifier(struct notifier_block *n, unsigned long action, void *arg)
{
@@ -282,6 +283,7 @@ cpu_vsyscall_notifier(struct notifier_bl
smp_call_function_single(cpu, cpu_vsyscall_init, NULL, 0, 1);
return NOTIFY_DONE;
}
+#endif

static void __init map_vsyscall(void)
{
@@ -303,7 +305,9 @@ static int __init vsyscall_init(void)
register_sysctl_table(kernel_root_table2, 0);
#endif
on_each_cpu(cpu_vsyscall_init, NULL, 0, 1);
+#ifdef CONFIG_HOTPLUG_CPU
hotcpu_notifier(cpu_vsyscall_notifier, 0);
+#endif
return 0;
}

-
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