On 02-06-15, 12:26, Preeti U Murthy wrote:
> dbs_data->mutex_lock is used to serialize only START,STOP,LIMIT calls.
> It does not serialize EXIT/INIT with these operations, but that is
Yeah, we need to fix that.
To be honest, locking is in real bad shape in cpufreq core and its
required to get it
On 06/02/2015 11:57 AM, Viresh Kumar wrote:
> On 02-06-15, 11:50, Preeti U Murthy wrote:
>> CPU0CPU1
>>
>> store* store*
>>
>> lock(policy 1) lock(policy 2)
>> cpufreq_set_policy() cpufreq_set_policy()
>> EXIT() :
>> dbs-data->usage_co
On 02-06-15, 11:50, Preeti U Murthy wrote:
> CPU0CPU1
>
> store* store*
>
> lock(policy 1) lock(policy 2)
> cpufreq_set_policy() cpufreq_set_policy()
> EXIT() :
> dbs-data->usage_count--
>
> INIT() EXIT()
When
On 06/02/2015 11:41 AM, Viresh Kumar wrote:
> On 02-06-15, 11:33, Preeti U Murthy wrote:
>> No, dbs_data is a governor wide data structure and not a policy wide
>
> Yeah, that's the common part which I was referring to. But normally
> its just read for policies in START/STOP, they just update per-
On 02-06-15, 11:33, Preeti U Murthy wrote:
> No, dbs_data is a governor wide data structure and not a policy wide
Yeah, that's the common part which I was referring to. But normally
its just read for policies in START/STOP, they just update per-cpu
data for policy->cpus.
> one, which is manipulat
On 06/02/2015 11:09 AM, Viresh Kumar wrote:
> On 02-06-15, 11:01, Preeti U Murthy wrote:
>> How will a policy lock help here at all, when cpus from multiple
>> policies are calling into __cpufreq_governor() ? How will a policy lock
>> serialize their entry into cpufreq_governor_dbs() ?
>
> So diff
On 02-06-15, 11:01, Preeti U Murthy wrote:
> How will a policy lock help here at all, when cpus from multiple
> policies are calling into __cpufreq_governor() ? How will a policy lock
> serialize their entry into cpufreq_governor_dbs() ?
So different policies don't really depend on each other. The
On 06/01/2015 12:49 PM, Viresh Kumar wrote:
> On 01-06-15, 01:40, Preeti U Murthy wrote:
>
> I have to mention that this is somewhat inspired by:
>
> https://git.linaro.org/people/viresh.kumar/linux.git/commit/1e37f1d6ae12f5896e4e216f986762c3050129a5
>
> and I was waiting to finish some core-cha
On 06/01/2015 12:49 PM, Viresh Kumar wrote:
> On 01-06-15, 01:40, Preeti U Murthy wrote:
>
> I have to mention that this is somewhat inspired by:
>
> https://git.linaro.org/people/viresh.kumar/linux.git/commit/1e37f1d6ae12f5896e4e216f986762c3050129a5
>
> and I was waiting to finish some core-cha
On 01-06-15, 01:40, Preeti U Murthy wrote:
I have to mention that this is somewhat inspired by:
https://git.linaro.org/people/viresh.kumar/linux.git/commit/1e37f1d6ae12f5896e4e216f986762c3050129a5
and I was waiting to finish some core-changes to make all this simple.
I am fine to you trying to
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