linux-kernel - Re: [PATCH v11 4/5] x86/earlyprintk: setup earlyprintk as early as possible

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Message-ID: <1433929488.26331.117.camel@linux.intel.com>
Date:	Wed, 10 Jun 2015 12:44:48 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	Alexander Kuleshov <kuleshovmail@...il.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Borislav Petkov <bp@...e.de>,
	Mark Rustad <mark.d.rustad@...el.com>,
	Yinghai Lu <yinghai@...nel.org>
Subject: Re: [PATCH v11 4/5] x86/earlyprintk: setup earlyprintk as early as
 possible

On Wed, 2015-06-10 at 00:00 +0600, Alexander Kuleshov wrote:
> 2015-06-09 23:00 GMT+06:00 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>:
> >
> > I'm still not convincing by this code to be in that form and here. What
> > about to refactor setup_early_printk() to helper which will do parse
> > parameters to a let say structure where one of the flag will be
> > struct early_printk_param {
> > …
> > const char *arg;
> > bool serial;
> > }
> >
> > Your function will be something like this
> >
> > struct early_printk_param epp;
> >
> > parse_early_printk_param(&epp);
> >
> > if (!epp->serial)
> >  return /* whatever error code */;
> >
> > return setup_early_printk(epp.arg);
> >
> 
> Hello Andy,
> 
> But what is difference between parsing to string and
> passing it and parsing to structure and pass its field?

You do parsing twice (still original code and your piece here), and
honestly I don't like your approach in this form.

> 
> Thank you.


-- 
Andy Shevchenko <andriy.shevchenko@...el.com>
Intel Finland Oy

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