linux-kernel - Re: [PATCH v9 09/10] cpuidle: menu: Refine idle state selection for running tick

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Message-ID: <CAJZ5v0hHafjXS_erX_mRda_ZNj5LHXVQPthOO2F5zpBDAoQXsA@mail.gmail.com>
Date:   Thu, 5 Apr 2018 15:52:22 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux PM <linux-pm@...r.kernel.org>,
        Frederic Weisbecker <fweisbec@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Paul McKenney <paulmck@...ux.vnet.ibm.com>,
        Thomas Ilsche <thomas.ilsche@...dresden.de>,
        Doug Smythies <dsmythies@...us.net>,
        Rik van Riel <riel@...riel.com>,
        Aubrey Li <aubrey.li@...ux.intel.com>,
        Mike Galbraith <mgalbraith@...e.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Len Brown <len.brown@...el.com>
Subject: Re: [PATCH v9 09/10] cpuidle: menu: Refine idle state selection for
 running tick

On Thu, Apr 5, 2018 at 2:32 PM, Peter Zijlstra <peterz@...radead.org> wrote:
> On Wed, Apr 04, 2018 at 10:49:34AM +0200, Rafael J. Wysocki wrote:
>> +     data->next_timer_us = ktime_to_us(tick_nohz_get_sleep_length(&delta_next));
>> +             unsigned int delta_next_us = ktime_to_us(delta_next);
>
> We really should be looking at removing all that us nonsense from the
> idle code, but that'll be another series.

Right.