Re: [PATCH 6/6]suspend/resume SMP support

[Andrew Morton <akpm@osdl.org>]

Li Shaohua <shaohua.li@intel.com> wrote:
>
> Using CPU hotplug to support suspend/resume SMP. Both S3 and S4 use
>  disable/enable_nonboot_cpus API. The S4 part is based on Pavel's
>  original S4 SMP patch.



On ia64, with tiger_defconfig:

kernel/built-in.o(.text+0x59e12): In function `suspend_prepare':
: undefined reference to `disable_nonboot_cpus'
kernel/built-in.o(.text+0x59e62): In function `suspend_prepare':
: undefined reference to `enable_nonboot_cpus'
kernel/built-in.o(.text+0x5a222): In function `suspend_finish':
: undefined reference to `enable_nonboot_cpus'


Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 include/linux/suspend.h |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -puN include/linux/suspend.h~suspend-resume-smp-support-fix include/linux/suspend.h
--- 25/include/linux/suspend.h~suspend-resume-smp-support-fix	Thu Apr 28 15:12:21 2005
+++ 25-akpm/include/linux/suspend.h	Thu Apr 28 15:13:13 2005
@@ -58,7 +58,7 @@ static inline int software_suspend(void)
 }
 #endif
 
-#ifdef CONFIG_HOTPLUG_CPU
+#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_SOFTWARE_SUSPEND)
 extern void disable_nonboot_cpus(void);
 extern void enable_nonboot_cpus(void);
 #else
_