linux-kernel - Re: [PATCH] mmc: print message if a card supports secure erase/trim

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Date:	Tue, 27 Jan 2015 12:48:17 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Alexander Holler <holler@...oftware.de>
Cc:	Borislav Petkov <bp@...en8.de>,
	Richard Weinberger <richard@....at>, linux-mmc@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	Chris Ball <chris@...ntf.net>,
	Ulf Hansson <ulf.hansson@...aro.org>
Subject: Re: [PATCH] mmc: print message if a card supports secure erase/trim

On Tue, 27 Jan 2015 18:38:36 +0100
Alexander Holler <holler@...oftware.de> wrote:

> Anyway, I like(d) Linux because it didn't had a splash screen and used 
> to spit out all types of information on the screen where it could be 
> easily seen or found (in contrast other OS which try to hide all 
> technical details from users).

Yes, I like those days too, but as you say, times are changing, and we
must adapt.

> 
> Of course, times are changing, including the amount of stuff printed on 
> screen. But I still find it much much easier to grep on the output of 
> dmesg than to search through thousands files in sysfs. Even if that can 
> be done with grep too (kind of). But it's much more complicated because 
> grep doesn't connect the file name with the content, so you need more 
> complicated stuff to combine both in order to search for and find 
> something in sysfs.

Come on, it's not that more complex. If you know the name of the file,
just do:

find /sys -print -name <name> -exec cat {} \;

And you'll get the data you want.

Basically, what you are saying is "printk is more convenient for me and
I do not care about the other cases that make much more sense with
sysfs". The kernel does not work that way.

-- Steve
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