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Subject[patch, -rc6] x86_64: UP build fixes
Subject: x86_64: UP build fixes
From: Ingo Molnar <mingo@elte.hu>

x86_64 does not build cleanly on UP:

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

this patch fixes it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
include/asm-x86_64/smp.h | 11 ++---------
include/linux/cpu.h | 2 +-
include/linux/smp.h | 9 +++++++++
3 files changed, 12 insertions(+), 10 deletions(-)
Index: linux/include/asm-x86_64/smp.h
===================================================================
--- linux.orig/include/asm-x86_64/smp.h
+++ linux/include/asm-x86_64/smp.h
@@ -115,16 +115,9 @@ static __inline int logical_smp_processo
}

#ifdef CONFIG_SMP
-#define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
+# define cpu_physical_id(cpu) x86_cpu_to_apicid[cpu]
#else
-#define cpu_physical_id(cpu) boot_cpu_id
-static inline int smp_call_function_single(int cpuid, void (*func) (void *info),
- void *info, int retry, int wait)
-{
- /* Disable interrupts here? */
- func(info);
- return 0;
-}
+# define cpu_physical_id(cpu) boot_cpu_id
#endif /* !CONFIG_SMP */
#endif

Index: linux/include/linux/cpu.h
===================================================================
--- linux.orig/include/linux/cpu.h
+++ linux/include/linux/cpu.h
@@ -81,7 +81,7 @@ int cpu_down(unsigned int cpu);
#define lock_cpu_hotplug() do { } while (0)
#define unlock_cpu_hotplug() do { } while (0)
#define lock_cpu_hotplug_interruptible() 0
-#define hotcpu_notifier(fn, pri) do { } while (0)
+#define hotcpu_notifier(fn, pri) do { (void)(fn); } while (0)
#define register_hotcpu_notifier(nb) do { } while (0)
#define unregister_hotcpu_notifier(nb) do { } while (0)

Index: linux/include/linux/smp.h
===================================================================
--- linux.orig/include/linux/smp.h
+++ linux/include/linux/smp.h
@@ -100,6 +100,15 @@ static inline void smp_send_reschedule(i
#define num_booting_cpus() 1
#define smp_prepare_boot_cpu() do {} while (0)

+static inline int
+smp_call_function_single(int cpuid, void (*func) (void *info), void *info,
+ int retry, int wait)
+{
+ func(info);
+
+ return 0;
+}
+
#endif /* !SMP */

/*
-
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