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SubjectRe: 2.6.14-mm1
Andrew Morton wrote:

>ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.14/2.6.14-mm1/
>
>
Hi Andrew,

drivers/cpufreq/cpufreq.c uses current_in_cpu_hotplug.
But, kernel/cpu.c is not built on UP boxes.
This generates the following error:

LD .tmp_vmlinux1
drivers/built-in.o: In function `__cpufreq_driver_target':
: undefined reference to `current_in_cpu_hotplug'

The attached patch should fix it.

Signed-off-by: Brice Goglin <Brice.Goglin@ens-lyon.org>

Regards,
Brice

--- linux-mm/include/linux/cpu.h.old 2005-11-06 22:08:39.000000000 -0500
+++ linux-mm/include/linux/cpu.h 2005-11-06 22:41:17.000000000 -0500
@@ -33,7 +33,6 @@

extern int register_cpu(struct cpu *, int, struct node *);
extern struct sys_device *get_cpu_sysdev(int cpu);
-extern int current_in_cpu_hotplug(void);
#ifdef CONFIG_HOTPLUG_CPU
extern void unregister_cpu(struct cpu *, struct node *);
#endif
@@ -43,6 +42,7 @@
/* Need to know about CPUs going up/down? */
extern int register_cpu_notifier(struct notifier_block *nb);
extern void unregister_cpu_notifier(struct notifier_block *nb);
+extern int current_in_cpu_hotplug(void);

int cpu_up(unsigned int cpu);

@@ -55,6 +55,10 @@
static inline void unregister_cpu_notifier(struct notifier_block *nb)
{
}
+static inline int current_in_cpu_hotplug(void)
+{
+ return 0;
+}

#endif /* CONFIG_SMP */
extern struct sysdev_class cpu_sysdev_class;
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