On 09-07-15, 01:41, Rafael J. Wysocki wrote:
On Wednesday, July 08, 2015 04:07:32 PM Viresh Kumar wrote:
CPUFreq drivers today support a ->get(cpu) callback, which returns current rate of a CPU. The problem with ->get() is that it takes a cpu number as parameter and this unnecessarily makes things complex.
Firstly the core gets the cpu number by doing operation 'policy->cpu' on the policy and then many drivers need to get the policy back and so do cpufreq_cpu_get(cpu) on the passed cpu.
As cpufreq core works on policies, it would be better if we pass them 'policy' directly and drivers can use policy->cpu if that's all they need.
Hence, this patch adds in another callback, ->get_rate() which does exactly the same work as ->get(), just that we pass 'policy' as parameter instead of 'cpu'.
The plan is to migrate all drivers to this new callback and remove ->get() after that.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org
Hi Rafael,
I hope you are fine with this stuff :), once you approve I will get other patches to migrate existing drivers to this interface.
I'm generally fine with it, but please target it at 4.4 at the earliest.
Sure, but I was a bit curious on why 4.4 and not 4.3 ? as we are still at 4.2-rc1 today, and these patches can be done fairly quickly.