* Arun R Bharadwaj <a...@linux.vnet.ibm.com> [2009-12-02 15:24:27]:
In arch/powerpc/kernel/idle.c create a default_idle() routine by moving
the failover condition of the cpu_idle() idle loop. This is needed by
cpuidle infrastructure to call default_idle when other idle routines
are not yet registered. Functionality remains the same, but the code is
slightly moved around.
Signed-off-by: Arun R Bharadwaj <a...@linux.vnet.ibm.com>
---
arch/powerpc/Kconfig | 3 +++
arch/powerpc/include/asm/system.h | 1 +
arch/powerpc/kernel/idle.c | 6 ++++++
3 files changed, 10 insertions(+)
Index: linux.trees.git/arch/powerpc/Kconfig
===================================================================
--- linux.trees.git.orig/arch/powerpc/Kconfig
+++ linux.trees.git/arch/powerpc/Kconfig
@@ -94,6 +94,9 @@ config ARCH_HAS_ILOG2_U64
config ARCH_HAS_CPU_IDLE_WAIT
def_bool y
+config ARCH_HAS_DEFAULT_IDLE
+ def_bool y
+
config GENERIC_HWEIGHT
bool
default y
Index: linux.trees.git/arch/powerpc/include/asm/system.h
===================================================================
--- linux.trees.git.orig/arch/powerpc/include/asm/system.h
+++ linux.trees.git/arch/powerpc/include/asm/system.h
@@ -218,6 +218,7 @@ extern unsigned long klimit;
extern void *alloc_maybe_bootmem(size_t size, gfp_t mask);
extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
+extern void default_idle(void);
extern int powersave_nap; /* set if nap mode can be used in idle loop */
/*
Index: linux.trees.git/arch/powerpc/kernel/idle.c
===================================================================
--- linux.trees.git.orig/arch/powerpc/kernel/idle.c
+++ linux.trees.git/arch/powerpc/kernel/idle.c
@@ -121,6 +121,12 @@ void cpu_idle_wait(void)
}
EXPORT_SYMBOL_GPL(cpu_idle_wait);
+void default_idle(void)
+{
+ HMT_low();
+ HMT_very_low();
+}
+
int powersave_nap;
#ifdef CONFIG_SYSCTL
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