linux-kernel - Re: [PATCH] intel_pstate: Add get_scaling cpu

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Message-ID: <20150721131147.75f772bc@kcaccard-desk.amr.corp.intel.com>
Date:	Tue, 21 Jul 2015 13:11:47 -0700
From:	Kristen Carlson Accardi <kristen@...ux.intel.com>
To:	Lukasz Anaczkowski <lukasz.anaczkowski@...el.com>
Cc:	<rjw@...ysocki.net>, <viresh.kumar@...aro.org>,
	<linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<yishimat@...hat.com>,
	Dasaratharaman Chandramouli 
	<dasaratharaman.chandramouli@...el.com>
Subject: Re: [PATCH] intel_pstate: Add get_scaling cpu_defaults param to
 Knights Landing

On Tue, 21 Jul 2015 10:41:13 +0200
Lukasz Anaczkowski <lukasz.anaczkowski@...el.com> wrote:

> Scaling for Knights Landing is same as the default scaling (100000).
> When Knigts Landing support was added to the pstate driver, this
> parameter was omitted resulting in a kernel panic during boot.
> 
> Reported-by: Yasuaki Ishimatsu <yishimat@...hat.com>
> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@...el.com>
> Signed-off-by: Lukasz Anaczkowski <lukasz.anaczkowski@...el.com>
> ---
>  drivers/cpufreq/intel_pstate.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
> index 15ada47..fcb929e 100644
> --- a/drivers/cpufreq/intel_pstate.c
> +++ b/drivers/cpufreq/intel_pstate.c
> @@ -681,6 +681,7 @@ static struct cpu_defaults knl_params = {
>  		.get_max = core_get_max_pstate,
>  		.get_min = core_get_min_pstate,
>  		.get_turbo = knl_get_turbo_pstate,
> +		.get_scaling = core_get_scaling,
>  		.set = core_set_pstate,
>  	},
>  };

Acked-by: Kristen Carlson Accardi <kristen@...ux.intel.com>
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