linux-kernel - Re: [PATCH] Documentation: Add doc about aerdriver.* parameters to kernel-parameters.txt

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Message-Id: <20100604152722.2da5de06.akpm@linux-foundation.org>
Date:	Fri, 4 Jun 2010 15:27:22 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	John Villalovos <jvillalo@...hat.com>
Cc:	linux-kernel@...r.kernel.org, x86@...nel.org,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: [PATCH] Documentation: Add doc about aerdriver.* parameters to
 kernel-parameters.txt

On Wed, 2 Jun 2010 11:27:22 -0400
John Villalovos <jvillalo@...hat.com> wrote:

> Adding documentation about two aerdriver.* command line parameters.
> 
> Signed-off-by: John L. Villalovos <john.l.villalovos@...el.com>
> 
> diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
> index 1808f11..57ff168 100644
> --- a/Documentation/kernel-parameters.txt
> +++ b/Documentation/kernel-parameters.txt
> @@ -293,6 +293,19 @@ and is between 256 and 4096 characters. It is defined in the file
>  			Format: <io>,<irq>,<dma>,<mss_io>,<mpu_io>,<mpu_irq>
>  			See also header of sound/oss/aedsp16.c.
>  
> +	aerdriver.forceload= [HW,PCIE] Advanced Error Recovery (AER) Root Driver
> +			{ y, n }
> +			y: Force the AER Root driver to load
> +			n: Do not force the AER Root driver to load [DEFAULT]
> +			See also Documentation/PCI/pcieaer-howto.txt
> +
> +	aerdriver.nosourceid= [HW,PCIE]
> +			{ y, n }
> +			y: Use when broken hardware (mostly chipsets) has root
> +			   ports that cannot obtain the reporting source ID.
> +			n: [DEFAULT]
> +			See also Documentation/PCI/pcieaer-howto.txt
> +
>  	agp=		[AGP]
>  			{ off | try_unsupported }
>  			off: disable AGP support

We don't normally document the parameters for random drivers within
kernel-parameters.txt - that file is more for core-kernel things.

The way to document these guys is with MODULE_PARM_DESC() in
drivers/pci/pcie/aer/aerdrv_core.c.  Coz some dope forgot to do that.

I'm sure there's some way of extracting all these random
MODULE_PARM_DESC()s from vmlinux/modules/etc for human consumption, but
I'm not sure what that way is.

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