linux-kernel - Re: [PATCH] printk boot_delay: use loops_per_msec instead of printk_delay

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Message-Id: <20090622225553.8aa1dfb7.akpm@linux-foundation.org>
Date:	Mon, 22 Jun 2009 22:55:53 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Dave Young <hidave.darkstar@...il.com>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] printk boot_delay: use loops_per_msec instead of 
 printk_delay_msec

On Tue, 16 Jun 2009 17:02:24 +0800 Dave Young <hidave.darkstar@...il.com> wrote:

> Sorry, should post this firstly because the previous printk_delay
> patch depends on this,
> please review, thanks.
> --
> 
> Use loops_per_msec instead of printk_delay_msec for boot printk delay.
> 

The changelog is poor, because it fails to describe _why_ this change
is being made.  I rewrote it to

  Rename `printk_delay_msec' to `loops_per_msec', because the patch
  "printk: add printk_delay to make messages readable for some
  scenarios" wishes to more appropriately use the `printk_delay_msec'
  identifier.

> 
> --- linux-2.6.orig/kernel/printk.c	2009-06-15 10:53:10.000000000 +0800
> +++ linux-2.6/kernel/printk.c	2009-06-15 13:17:13.000000000 +0800
> @@ -198,12 +198,11 @@ __setup("log_buf_len=", log_buf_len_setu
>  #ifdef CONFIG_BOOT_PRINTK_DELAY
> 
>  static unsigned int boot_delay; /* msecs delay after each printk
> during bootup */
> -static unsigned long long printk_delay_msec; /* per msec, based on
> boot_delay */

Your email client is wordwrapping the patches.

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