[PATCH 2/3] cpufreq: pmac64: re-estimate G5 cpufreq transition latency

[Viresh Kumar]

On 24 July 2013 01:54, Aaro Koskinen <aaro.koskinen at iki.fi> wrote:
> The patch also enables to use ondemand governor on the latter.

How? I can't see anything obvious here. :(

>
> Signed-off-by: Aaro Koskinen <aaro.koskinen at iki.fi>
> ---
>  drivers/cpufreq/pmac64-cpufreq.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/cpufreq/pmac64-cpufreq.c b/drivers/cpufreq/pmac64-cpufreq.c
> index 674807d..f9e399b 100644
> --- a/drivers/cpufreq/pmac64-cpufreq.c
> +++ b/drivers/cpufreq/pmac64-cpufreq.c
> @@ -85,7 +85,8 @@ static int (*g5_query_freq)(void);
>
>  static DEFINE_MUTEX(g5_switch_mutex);
>
> -static unsigned long transition_latency;
> +/* A conservative estimate, based on Xserve G5 and iMac G5 (iSight). */
> +static const unsigned long transition_latency = 10 * NSEC_PER_MSEC;
>
>  #ifdef CONFIG_PMAC_SMU
>
> @@ -499,7 +500,6 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
>         g5_cpu_freqs[1].frequency = max_freq/2;
>
>         /* Set callbacks */
> -       transition_latency = 12000;
>         g5_switch_freq = g5_scom_switch_freq;
>         g5_query_freq = g5_scom_query_freq;
>         freq_method = "SCOM";
> @@ -675,7 +675,6 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
>         g5_cpu_freqs[1].frequency = min_freq;
>
>         /* Set callbacks */
> -       transition_latency = CPUFREQ_ETERNAL;
>         g5_switch_volt = g5_pfunc_switch_volt;
>         g5_switch_freq = g5_pfunc_switch_freq;
>         g5_query_freq = g5_pfunc_query_freq;
> --
> 1.8.3.2
>