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authorRafael J. Wysocki <rjw@sisk.pl>2007-08-30 23:56:29 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-08-31 01:42:22 -0700
commitf3de4be9d5f8551d7880a1f1f5231a30e0161b1f (patch)
tree9ebd397e6b253d144460f061b95ded60a7b0da0b /kernel
parentb07e35f94a7b6a059f889b904529ee907dc0634d (diff)
downloadlinux-linaro-f3de4be9d5f8551d7880a1f1f5231a30e0161b1f.tar.gz
PM: Fix dependencies of CONFIG_SUSPEND and CONFIG_HIBERNATION
Dependencies of CONFIG_SUSPEND and CONFIG_HIBERNATION introduced by commit 296699de6bdc717189a331ab6bbe90e05c94db06 "Introduce CONFIG_SUSPEND for suspend-to-Ram and standby" are incorrect, as they don't cover the facts that (1) not all architectures support suspend and (2) SMP hibernation is only possible on X86 and PPC64 (if CONFIG_PPC64_SWSUSP is set). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cpu.c4
-rw-r--r--kernel/power/Kconfig41
2 files changed, 33 insertions, 12 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 181ae708602..38033db8d8e 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -273,7 +273,7 @@ int __cpuinit cpu_up(unsigned int cpu)
return err;
}
-#ifdef CONFIG_SUSPEND_SMP
+#ifdef CONFIG_PM_SLEEP_SMP
static cpumask_t frozen_cpus;
int disable_nonboot_cpus(void)
@@ -334,4 +334,4 @@ void enable_nonboot_cpus(void)
out:
mutex_unlock(&cpu_add_remove_lock);
}
-#endif
+#endif /* CONFIG_PM_SLEEP_SMP */
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 412859f8d94..c8580a1e687 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -72,15 +72,10 @@ config PM_TRACE
CAUTION: this option will cause your machine's real-time clock to be
set to an invalid time after a resume.
-config SUSPEND_SMP_POSSIBLE
- bool
- depends on (X86 && !X86_VOYAGER) || (PPC64 && (PPC_PSERIES || PPC_PMAC))
- depends on SMP
- default y
-
-config SUSPEND_SMP
+config PM_SLEEP_SMP
bool
- depends on SUSPEND_SMP_POSSIBLE && PM_SLEEP
+ depends on SUSPEND_SMP_POSSIBLE || HIBERNATION_SMP_POSSIBLE
+ depends on PM_SLEEP
select HOTPLUG_CPU
default y
@@ -89,20 +84,46 @@ config PM_SLEEP
depends on SUSPEND || HIBERNATION
default y
+config SUSPEND_UP_POSSIBLE
+ bool
+ depends on (X86 && !X86_VOYAGER) || PPC || ARM || BLACKFIN || MIPS \
+ || SUPERH || FRV
+ depends on !SMP
+ default y
+
+config SUSPEND_SMP_POSSIBLE
+ bool
+ depends on (X86 && !X86_VOYAGER) \
+ || (PPC && (PPC_PSERIES || PPC_PMAC)) || ARM
+ depends on SMP
+ default y
+
config SUSPEND
bool "Suspend to RAM and standby"
depends on PM
- depends on !SMP || SUSPEND_SMP_POSSIBLE
+ depends on SUSPEND_UP_POSSIBLE || SUSPEND_SMP_POSSIBLE
default y
---help---
Allow the system to enter sleep states in which main memory is
powered and thus its contents are preserved, such as the
suspend-to-RAM state (i.e. the ACPI S3 state).
+config HIBERNATION_UP_POSSIBLE
+ bool
+ depends on X86 || PPC64_SWSUSP || FRV || PPC32
+ depends on !SMP
+ default y
+
+config HIBERNATION_SMP_POSSIBLE
+ bool
+ depends on (X86 && !X86_VOYAGER) || PPC64_SWSUSP
+ depends on SMP
+ default y
+
config HIBERNATION
bool "Hibernation (aka 'suspend to disk')"
depends on PM && SWAP
- depends on ((X86 || PPC64_SWSUSP || FRV || PPC32) && !SMP) || SUSPEND_SMP_POSSIBLE
+ depends on HIBERNATION_UP_POSSIBLE || HIBERNATION_SMP_POSSIBLE
---help---
Enable the suspend to disk (STD) functionality, which is usually
called "hibernation" in user interfaces. STD checkpoints the