linux-kernel - Re: [PATCH] cpufreq: Remove CONFIG_CPU_FREQ_STAT

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Message-ID: <20170105183242.cwyymvr37mdqb6mj@kozik-lap>
Date:   Thu, 5 Jan 2017 20:32:42 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Rafael Wysocki <rjw@...ysocki.net>, Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Javier Martinez Canillas <javier@....samsung.com>,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...e-electrons.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Simon Horman <horms@...ge.net.au>,
        Magnus Damm <magnus.damm@...il.com>,
        linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        arnd.bergmann@...aro.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, linux-mips@...ux-mips.org,
        linuxppc-dev@...ts.ozlabs.org, linux-sh@...r.kernel.org
Subject: Re: [PATCH] cpufreq: Remove CONFIG_CPU_FREQ_STAT_DETAILS config
 option

On Thu, Jan 05, 2017 at 01:57:41PM +0530, Viresh Kumar wrote:
> This doesn't have any benefit apart from saving a small amount of memory
> when it is disabled. The ifdef hackery in the code makes it dirty
> unnecessarily.
> 
> Clean it up by removing the Kconfig option completely. Few defconfigs
> are also updated and CONFIG_CPU_FREQ_STAT_DETAILS is replaced with
> CONFIG_CPU_FREQ_STAT now in them, as users wanted stats to be enabled.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  arch/arm/configs/exynos_defconfig         |  2 +-
>  arch/arm/configs/multi_v5_defconfig       |  2 +-
>  arch/arm/configs/multi_v7_defconfig       |  2 +-
>  arch/arm/configs/mvebu_v5_defconfig       |  2 +-
>  arch/arm/configs/pxa_defconfig            |  2 +-
>  arch/arm/configs/shmobile_defconfig       |  2 +-
>  arch/mips/configs/lemote2f_defconfig      |  1 -
>  arch/powerpc/configs/ppc6xx_defconfig     |  1 -
>  arch/sh/configs/sh7785lcr_32bit_defconfig |  2 +-
>  drivers/cpufreq/Kconfig                   |  8 --------
>  drivers/cpufreq/cpufreq_stats.c           | 14 --------------
>  11 files changed, 7 insertions(+), 31 deletions(-)
> 
> diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
> index 79c415c33f69..809f0bf3042a 100644
> --- a/arch/arm/configs/exynos_defconfig
> +++ b/arch/arm/configs/exynos_defconfig
> @@ -24,7 +24,7 @@ CONFIG_ARM_APPENDED_DTB=y
>  CONFIG_ARM_ATAG_DTB_COMPAT=y
>  CONFIG_CMDLINE="root=/dev/ram0 rw ramdisk=8192 initrd=0x41000000,8M console=ttySAC1,115200 init=/linuxrc mem=256M"
>  CONFIG_CPU_FREQ=y
> -CONFIG_CPU_FREQ_STAT_DETAILS=y
> +CONFIG_CPU_FREQ_STAT=y
>  CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
>  CONFIG_CPU_FREQ_GOV_POWERSAVE=m
>  CONFIG_CPU_FREQ_GOV_USERSPACE=m

For Exynos:
Acked-by: Krzysztof Kozlowski <krzk@...nel.org>

Best regards,
Krzysztof