[PATCH] suspend/resume SMP support

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.

Signed-off-by: Li Shaohua<shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 696387ffe49c..fdb377636505 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -28,7 +28,7 @@ config PM_DEBUG
 
 config SOFTWARE_SUSPEND
         bool "Software Suspend (EXPERIMENTAL)"
-        depends on EXPERIMENTAL && PM && SWAP
+        depends on EXPERIMENTAL && PM && SWAP && (SUSPEND_SMP || !SMP)
         ---help---
           Enable the possibility of suspending the machine.
           It doesn't need APM.
@@ -72,3 +72,7 @@ config PM_STD_PARTITION
           suspended image to. It will simply pick the first available swap 
           device.
 
+config SUSPEND_SMP
+        bool
+        depends on HOTPLUG_CPU && X86 && PM
+        default y