Re: [PATCH 1/4] cpufreq: stats: Defer stats update to cpufreq_stats_record_transition()

Lukasz Luba
2020-09-15T10:04:34Z

Hi Viresh,

On 9/2/20 8:24 AM, Viresh Kumar wrote:
> In order to prepare for lock-less stats update, add support to defer any
> updates to it until cpufreq_stats_record_transition() is called.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
> ---
> drivers/cpufreq/cpufreq_stats.c | 75 ++++++++++++++++++++++++---------
> 1 file changed, 56 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
> index 94d959a8e954..fdf9e8556a49 100644
> --- a/drivers/cpufreq/cpufreq_stats.c
> +++ b/drivers/cpufreq/cpufreq_stats.c
> @@ -22,17 +22,22 @@ struct cpufreq_stats {

Would it be possible to move this structure in the
linux/cpufreq.h header? Any subsystem could have access to it,
like to the cpuidle stats.

Apart from that (and the comment regarding the 'atomic_t' field)
I don't see any issues.

Regards,
Lukasz