linux-kernel - Re: [PATCH] intel_idle: Add ICL support

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Message-ID: <39d26cecd7e911c6527e05fbe5049b13a5d53788.camel@gmail.com>
Date:   Wed, 26 Aug 2020 19:52:52 +0300
From:   Artem Bityutskiy <dedekind1@...il.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Guilhem Lettron <guilhem@...pilot.io>,
        Zhang Rui <rui.zhang@...el.com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Len Brown <lenb@...nel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] intel_idle: Add ICL support

On Wed, 2020-08-26 at 18:43 +0200, Rafael J. Wysocki wrote:
> > I am curious, somehow that patch makes a difference.
> 
> It does make a difference, because it makes the processor spend more
> time in PC2.  Which very well may be because the processor cannot
> enter deeper C-states.

OK, you are right, we do not indeed have PC10 in both cases. The file
was wrapped and I unwrapped it incorrectly. So indeed this is the real
problem to solve, and the patch does not solve it.