Re: v4.8-rc1: thinkpad x60: running at low frequency even during kernel build

From: Pandruvada, Srinivas
Date: Fri Nov 04 2016 - 19:21:48 EST


On Fri, 2016-11-04 at 23:16 +0100, Pavel Machek wrote:
> Hi!
>

[...]

> So we seem to have thermal or ACPI regression in v4.9-rc3.
>
It is possible. Can you add either add printk
inÂacpi_processor_ppc_has_changed() or use ftrace and see do you get to
these functions

acpi_processor_ppc_init()
acpi_processor_ppc_has_changed()
acpi_processor_ppc_notifier()

?

When temperature limit is reachedÂacpi_processor_ppc_notifier() should
be called.

Thanks,
Srinivas