linux-kernel - Re: [RFC 1/2] printk: Enable platform to provide a early boot clock

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Message-ID: <CAHp75VfcyyFeBnEdDbARk2VdxRT55qWdBJu_XWK5gGRHm5LTGg@mail.gmail.com>
Date:   Thu, 31 May 2018 21:15:43 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Feng Tang <feng.tang@...el.com>, Petr Mladek <pmladek@...e.com>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Alan Cox <gnomes@...rguk.ukuu.org.uk>,
        Peter Zijlstra <peterz@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        alek.du@...el.com
Subject: Re: [RFC 1/2] printk: Enable platform to provide a early boot clock

On Thu, May 31, 2018 at 8:22 PM, Randy Dunlap <rdunlap@...radead.org> wrote:
> On 05/31/2018 12:18 AM, Andy Shevchenko wrote:
>> On Wed, May 30, 2018 at 12:20 PM, Feng Tang <feng.tang@...el.com> wrote:

>>> +static u64 printk_clock(void)
>>> +{
>>> +       /* If platform provides early boot printk clock, then use it */
>>> +       if (unlikely(system_state == SYSTEM_BOOTING && boot_printk_clock_fn))
>>> +               return boot_printk_clock_fn();
>>> +       else
>>> +               return local_clock();
>>
>> 'else' is redundant.
>
> So it is.  Is this a style comment?
> This shouldn't matter to a smart compiler, should it?

In this particular case it doesn't matter, in more complex cases this
will increase an indentation level which becomes a hardly readable
code.

>>> +}

-- 
With Best Regards,
Andy Shevchenko