Re: [PATCH v3 4/9] powerpc/powernv: Make power7_powersave_common more generic

From: Gautham R Shenoy
Date: Tue May 24 2016 - 04:54:25 EST


Hi Shreyas,

On Mon, May 23, 2016 at 08:48:37PM +0530, Shreyas B. Prabhu wrote:
> power7_powersave_common does common steps needed before entering idle
> state and eventually changes MSR to MSR_IDLE and does rfid to
> power7_enter_nap_mode.
>
> Move the updation of HSTATE_HWTHREAD_STATE to power7_powersave_common
> from power7_enter_nap_mode and make it more generic by passing the rfid
> address as a function parameter.
>
> Also make function name more generic.
>
> Reviewed-by: Gautham R. Shenoy <ego@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Shreyas B. Prabhu <shreyas@xxxxxxxxxxxxxxxxxx>
> ---
> Changes in v3:
> ==============
> - Moved HSTATE_HWTHREAD_STATE updation to power_powersave_common
>
> arch/powerpc/kernel/idle_power_common.S | 30 +++++++++++++++++-------------
> 1 file changed, 17 insertions(+), 13 deletions(-)
>
> diff --git a/arch/powerpc/kernel/idle_power_common.S b/arch/powerpc/kernel/idle_power_common.S
> index 973c9a1..d100577 100644
> --- a/arch/powerpc/kernel/idle_power_common.S
> +++ b/arch/powerpc/kernel/idle_power_common.S
> @@ -74,8 +74,10 @@ core_idle_lock_held:
> * To check IRQ_HAPPENED in r4
> * 0 - don't check
> * 1 - check
> + *
> + * Address to 'rfid' to in r5
> */
> -_GLOBAL(power7_powersave_common)
> +_GLOBAL(pnv_powersave_common)

You can move this rename to the previous patch where it fits better.

[..snip..]
>
> .globl power7_enter_nap_mode
> power7_enter_nap_mode:

Ditto. This should be "pnv_enter_idle_mode" in the previous patch.

[..snip..]
>
> _GLOBAL(power7_winkle)
> li r3,3

li r3,PNV_THREAD_WINKLE

Which should be a separate patch.