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    Subject[v7 PATCH 6/7]: POWER: add a default_idle idle loop for POWER.
    * Arun R Bharadwaj <arun@linux.vnet.ibm.com> [2009-10-06 20:54:21]:

    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 <arun@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
    @@ -91,6 +91,9 @@ 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
    @@ -113,6 +113,12 @@ 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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