linux-kernel - Re: [RFC][PATCH 2/4] time: Fix CLOCK_MONOTONIC

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Message-ID: <CAE2F3rDBw18zOnJBOD=+_okAiYy=BboPuuUPRjFT+4NKA_+DMg@mail.gmail.com>
Date:   Tue, 30 May 2017 11:42:31 -0700
From:   Daniel Mentz <danielmentz@...gle.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     John Stultz <john.stultz@...aro.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Miroslav Lichvar <mlichvar@...hat.com>,
        Richard Cochran <richardcochran@...il.com>,
        Prarit Bhargava <prarit@...hat.com>,
        Stephen Boyd <stephen.boyd@...aro.org>,
        Kevin Brodsky <kevin.brodsky@....com>,
        Will Deacon <will.deacon@....com>
Subject: Re: [RFC][PATCH 2/4] time: Fix CLOCK_MONOTONIC_RAW sub-nanosecond accounting

On Sat, May 27, 2017 at 12:36 AM, Ingo Molnar <mingo@...nel.org> wrote:
>
> * John Stultz <john.stultz@...aro.org> wrote:
>
>> +     u64 nsecps;
>
> What does the 'ps' postfix stand for? It's not obvious (to me).
>

I guess that nsecps stands for "nanoseconds per second", although the
code appears to be storing that value left shifted by
tk->tkr_raw.shift.