Re: [PATCH v3 1/5] powernv: cpufreq driver for powernv platform

["Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>]

On 03/21/2014 04:24 PM, Viresh Kumar wrote:
> On 21 March 2014 16:13, Gautham R Shenoy <ego@linux.vnet.ibm.com> wrote:
>> On Fri, Mar 21, 2014 at 02:11:32PM +0530, Viresh Kumar wrote:
> 
>>>> +               pr_debug("PState id %d freq %d MHz\n", id, freq);
>>>> +               powernv_freqs[i].driver_data = i;
>>>
[...] 
>>>> +static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy)
>>>> +{
>>>> +       int base, i;
>>>> +
>>>> +#ifdef CONFIG_SMP
>>>
>>> What will break if you don't have this ifdef here? Without that as well
>>> below code should work?
> 
> Missed this one?
> 

Nothing will break, its just that the code size will be a tiny bit
lesser on UP configs, that's all :-) Anyway, I think removing the ifdef
improves the readability (and doesn't add any noticeable overhead on UP
kernels), so let's get rid of it.

Regards,
Srivatsa S. Bhat

>>>> +       base = cpu_first_thread_sibling(policy->cpu);
>>>> +
>>>> +       for (i = 0; i < threads_per_core; i++)
>>>> +               cpumask_set_cpu(base + i, policy->cpus);
>>>> +#endif
>>>> +       policy->cpuinfo.transition_latency = 25000;
>>>> +
>>>> +       policy->cur = powernv_freqs[0].frequency;
>>>> +       cpufreq_frequency_table_get_attr(powernv_freqs, policy->cpu);
>>>