linux-kernel - Re: Shorten efi regions output

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Message-ID: <20141210104627.GA17053@pd.tnic>
Date:	Wed, 10 Dec 2014 11:46:28 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Dave Young <dyoung@...hat.com>
Cc:	linux-efi <linux-efi@...r.kernel.org>,
	Laszlo Ersek <lersek@...hat.com>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Matt Fleming <matt.fleming@...el.com>,
	Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: Shorten efi regions output

On Wed, Dec 10, 2014 at 10:17:41AM +0800, Dave Young wrote:
> I have same feeling with you, it is too long for most of people.
>
> Since the printk code are for EFI_DEBUG, they are around the #ifdef
> so I would like to see a kernel param like efi_debug=on, so only
> efi_debug is specified then these verbose messages are printed.
> Without the param kernel can print some basic infomation about the
> memory ranges.
>
> In arm64 code there's already a uefi_debug param it can be moved to
> general code so that there will be a goable switch.

Hmm, makes sense to me. Maybe we should really hide those behind a
debug switch, the question is whether asking the user to boot with
"efi_debug=on" in order to see the regions is ok. And I think it is ok
because we do that when debugging other stuff so I don't see anything
different here.

And then when they're disabled by default, we don't really need to
shorten them as they're pure debug output then.

Matt?

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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