linux-kernel - RE: [PATCH] intel_pstate: Update cpu

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Message-ID: <001a01d1e234$e33ce290$a9b6a7b0$@net>
Date:	Tue, 19 Jul 2016 20:14:53 -0700
From:	"Doug Smythies" <dsmythies@...us.net>
To:	"'Srinivas Pandruvada'" <srinivas.pandruvada@...ux.intel.com>,
	"'Rafael J. Wysocki'" <rjw@...ysocki.net>
Cc:	"'Linux Kernel Mailing List'" <linux-kernel@...r.kernel.org>,
	"'Linux PM list'" <linux-pm@...r.kernel.org>
Subject: RE: [PATCH] intel_pstate: Update cpu_frequency tracepoint every time

On 2016.07.19 15:10 Srinivas Pandruvada wrote:
> On Tue, 2016-07-19 at 15:10 +0200, Rafael J. Wysocki wrote:
>> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>> 
>> Currently, intel_pstate only updates the cpu_frequency tracepoint
>> if the new P-state to set is different from the current one, but
>> that causes powertop to report 100% idle on an 100% loaded system
>> sometimes.
>> 
>> Prevent that from happening by updating the cpu_frequency tracepoint
>> every time intel_pstate_update_pstate() is called.
>> 
>> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>
> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>-

Shouldn't this patch refer to:

commit fdfdb2b1301670a69195ba1e5666df4a7f02eb46
Author: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Date:   Fri Mar 18 23:20:02 2016 +0100

    intel_pstate: Do not call wrmsrl_on_cpu() with disabled interrupts

which is the patch that introduced the regression?

... Doug