Re: [PATCH][RFC] ACPI: acpi_pad: Do not launch acpi_pad threads on idle cpus

[Yu Chen]

On Fri, May 04, 2018 at 04:08:42PM +0800, Chen Yu wrote:
> According to current implementation of acpi_pad driver,
> it does not make sense to spawn any power saving threads
> on the cpus which are already idle - it might bring
> unnecessary overhead on these idle cpus and causes power
> waste. So verify the condition that if the number of 'busy'
> cpus exceeds the amount of the 'forced idle' cpus - This is
> applicable due to round-robin attribute of the power saving
> threads, otherwise ignore the setting/ACPI notification.
> 
> Suggested-by: Lenny Szubowicz <lszubowi@xxxxxxxxxx>
> Suggested-by: Len Brown <lenb@xxxxxxxxxx>
> Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
> Cc: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx>
> Cc: Rui Zhang <rui.zhang@xxxxxxxxx>
> Cc: linux-acpi@xxxxxxxxxxxxxxx
> Signed-off-by: Chen Yu <yu.c.chen@xxxxxxxxx>
> ---
>
Please ignore this one, I'm sending out another version.
Thanks,
Yu