[PATCH] cpufreq: check only freq_table in __resolve_freq()

[PATCH] cpufreq: check only freq_table in __resolve_freq()

[Lukasz Luba]

The there is no need to check if the cpufreq driver implements callback
cpufreq_driver::target_index. The logic in the __resolve_freq uses
the frequency table available in the policy. It doesn't matter if the
driver provides 'target_index' or 'target' callback. It just has to
populate the 'policy->freq_table'.

Thus, check only frequency table during the frequency resolving call.

Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
 drivers/cpufreq/cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 7820c4e74289..69b3d61852ac 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -532,7 +532,7 @@ static unsigned int __resolve_freq(struct cpufreq_policy *policy,
 
 	target_freq = clamp_val(target_freq, policy->min, policy->max);
 
-	if (!cpufreq_driver->target_index)
+	if (!policy->freq_table)
 		return target_freq;
 
 	idx = cpufreq_frequency_table_target(policy, target_freq, relation);
-- 
2.17.1

Re: [PATCH] cpufreq: check only freq_table in __resolve_freq()

[Viresh Kumar]

On 11-08-22, 17:54, Lukasz Luba wrote:
> The there is no need to check if the cpufreq driver implements callback

s/The there/There/

> cpufreq_driver::target_index. The logic in the __resolve_freq uses
> the frequency table available in the policy. It doesn't matter if the
> driver provides 'target_index' or 'target' callback. It just has to
> populate the 'policy->freq_table'.
> 
> Thus, check only frequency table during the frequency resolving call.
> 
> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
> ---
>  drivers/cpufreq/cpufreq.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
> index 7820c4e74289..69b3d61852ac 100644
> --- a/drivers/cpufreq/cpufreq.c
> +++ b/drivers/cpufreq/cpufreq.c
> @@ -532,7 +532,7 @@ static unsigned int __resolve_freq(struct cpufreq_policy *policy,
>  
>  	target_freq = clamp_val(target_freq, policy->min, policy->max);
>  
> -	if (!cpufreq_driver->target_index)
> +	if (!policy->freq_table)
>  		return target_freq;
>  
>  	idx = cpufreq_frequency_table_target(policy, target_freq, relation);

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

-- 
viresh

Re: [PATCH] cpufreq: check only freq_table in __resolve_freq()

[Lukasz Luba]

On 8/12/22 05:05, Viresh Kumar wrote:
> On 11-08-22, 17:54, Lukasz Luba wrote:
>> The there is no need to check if the cpufreq driver implements callback
> 
> s/The there/There/
> 
>> cpufreq_driver::target_index. The logic in the __resolve_freq uses
>> the frequency table available in the policy. It doesn't matter if the
>> driver provides 'target_index' or 'target' callback. It just has to
>> populate the 'policy->freq_table'.
>>
>> Thus, check only frequency table during the frequency resolving call.
>>
>> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
>> ---
>>   drivers/cpufreq/cpufreq.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
>> index 7820c4e74289..69b3d61852ac 100644
>> --- a/drivers/cpufreq/cpufreq.c
>> +++ b/drivers/cpufreq/cpufreq.c
>> @@ -532,7 +532,7 @@ static unsigned int __resolve_freq(struct cpufreq_policy *policy,
>>   
>>   	target_freq = clamp_val(target_freq, policy->min, policy->max);
>>   
>> -	if (!cpufreq_driver->target_index)
>> +	if (!policy->freq_table)
>>   		return target_freq;
>>   
>>   	idx = cpufreq_frequency_table_target(policy, target_freq, relation);
> 
> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
> 

Thanks Viresh! I'll resend this patch w/ fixed description and your ACK