Re: [PATCH v2 7/8] PM QoS: Add CPU frequency maximum as PM QoS param

[mark gross <markgross@thegnar.org>]

I don't think this belongs in cpufreq.
--mark

On Fri, Jan 13, 2012 at 02:59:18PM +0200, Antti P Miettinen wrote:
> Add maximum CPU frequency as PM QoS parameter.
> 
> Signed-off-by: Antti P Miettinen <amiettinen@nvidia.com>
> ---
>  include/linux/pm_qos.h |    2 ++
>  kernel/power/qos.c     |   15 +++++++++++++++
>  2 files changed, 17 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
> index 54a0d00..7b8d08b 100644
> --- a/include/linux/pm_qos.h
> +++ b/include/linux/pm_qos.h
> @@ -15,6 +15,7 @@ enum {
>  	PM_QOS_NETWORK_LATENCY,
>  	PM_QOS_NETWORK_THROUGHPUT,
>  	PM_QOS_CPU_FREQ_MIN,
> +	PM_QOS_CPU_FREQ_MAX,
>  
>  	/* insert new class ID */
>  
> @@ -28,6 +29,7 @@ enum {
>  #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE	0
>  #define PM_QOS_DEV_LAT_DEFAULT_VALUE		0
>  #define PM_QOS_CPU_FREQ_MIN_DEFAULT_VALUE	0
> +#define PM_QOS_CPU_FREQ_MAX_DEFAULT_VALUE	LONG_MAX
>  
>  struct pm_qos_request {
>  	struct plist_node node;
> diff --git a/kernel/power/qos.c b/kernel/power/qos.c
> index 07d761a..04b744b 100644
> --- a/kernel/power/qos.c
> +++ b/kernel/power/qos.c
> @@ -115,12 +115,27 @@ static struct pm_qos_object cpu_freq_min_pm_qos = {
>  };
>  
>  
> +static BLOCKING_NOTIFIER_HEAD(cpu_freq_max_notifier);
> +static struct pm_qos_constraints cpu_freq_max_constraints = {
> +	.list = PLIST_HEAD_INIT(cpu_freq_max_constraints.list),
> +	.target_value = PM_QOS_CPU_FREQ_MAX_DEFAULT_VALUE,
> +	.default_value = PM_QOS_CPU_FREQ_MAX_DEFAULT_VALUE,
> +	.type = PM_QOS_MIN,
> +	.notifiers = &cpu_freq_max_notifier,
> +};
> +static struct pm_qos_object cpu_freq_max_pm_qos = {
> +	.constraints = &cpu_freq_max_constraints,
> +	.name = "cpu_freq_max",
> +};
> +
> +
>  static struct pm_qos_object *pm_qos_array[] = {
>  	&null_pm_qos,
>  	&cpu_dma_pm_qos,
>  	&network_lat_pm_qos,
>  	&network_throughput_pm_qos,
>  	&cpu_freq_min_pm_qos,
> +	&cpu_freq_max_pm_qos,
>  };
>  
>  static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
> -- 
> 1.7.4.1
> 
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