linux-kernel - Re: [PATCH v4 0/5] ARM: topology: set the capacity of each cores for big.LITTLE

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Date:	Tue, 10 Jul 2012 13:27:02 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Vincent Guittot <vincent.guittot@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linaro-dev@...ts.linaro.org, devicetree-discuss@...ts.ozlabs.org,
	linux@....linux.org.uk, grant.likely@...retlab.ca,
	rob.herring@...xeda.com, yong.zhang0@...il.com,
	namhyung@...nel.org, jean.pihet@...oldbits.com, mingo@...nel.org,
	Russell King <rmk@....linux.org.uk>
Subject: Re: [PATCH v4 0/5] ARM: topology: set the capacity of each cores
 for big.LITTLE

On Mon, 2012-07-09 at 11:27 +0200, Vincent Guittot wrote:
> This patchset creates an arch_scale_freq_power function for ARM, which is used 
> to set the relative capacity of each core of a big.LITTLE system. It also removes
> the broken power estimation of x86.
> 
> Modification since v3:
>  - Add comments
>  - Add optimization for SMP system
>  - Ensure that capacity of a CPU will be at most 1
> 
> Modification since v2:
>  - set_power_scale function becomes static
>  - Rework loop in update_siblings_masks
>  - Remove useless code in parse_dt_topology
> 
> Modification since v1:
>  - Add and update explanation about the use of the table and the range of the value 
>  - Remove the use of NR_CPUS and use nr_cpu_ids instead
>  - Remove broken power estimation of x86
> 
> Peter Zijlstra (1):
>   sched, x86: Remove broken power estimation

Note that this patch already made its way into tip as commit
bcae21d6e793a7047d38abc9ac0946c53733c1dd so it might be best to base
whatever tree this is supposed to fo into on something that includes
that.

> Vincent Guittot (4):
>   ARM: topology: Add arch_scale_freq_power function
>   ARM: topology: factorize the update of sibling masks
>   ARM: topology: Update cpu_power according to DT information
>   sched: cpu_power: enable ARCH_POWER

How would you like to proceed with these patches, I'm fine with them
going through the ARM tree..

In which case:

Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>

Ingo, Russell, any other preferences?
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