linux-kernel - Re: The sheer number of sparse warnings in the kernel

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Date:	Wed, 26 Feb 2014 15:29:54 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: The sheer number of sparse warnings in the kernel

On Wed, Feb 26, 2014 at 03:28:59PM -0800, Greg KH wrote:
> On Wed, Feb 26, 2014 at 02:49:26PM -0800, H. Peter Anvin wrote:
> > The number of sparse errors in the current kernel is staggering, and it
> > makes sparse a lot less valuable of a tool that it otherwise could be.
> > On a build of x86-64 allyesconfig I'm getting 20,676 sparse messages.
> > Out of those, 12,358 come from linux/err.h.  Given that the latter
> > basically spams *everything*, I can only conclude that almost noone uses
> > sparse unless they have a filter script.
> 
> What errors are you seeing from err.h?  I don't see those when building
> different subdirectories with sparse (which is how I normally use it.)
> 
> And what version of sparse are you running:
> 	$ sparse --version
> 	v0.4.5-rc1-407-g345e8943fc36

Ah, 0.5.0 is now out, maybe you should update to that version?

thanks,

greg k-h
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