linux-kernel - Re: [PATCH] checkkconfigsymbols.py: add option -i to ignore files

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Date:	Fri, 01 May 2015 22:49:16 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	Valentin Rothberg <valentinrothberg@...il.com>
Cc:	Russell King <linux@....linux.org.uk>,
	Greg KH <gregkh@...uxfoundation.org>,
	hengelein Stefan <stefan.hengelein@....de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] checkkconfigsymbols.py: add option -i to ignore files

[Added Russell, because I, sort, of drop his name.]

Valentin Rothberg schreef op vr 01-05-2015 om 22:13 [+0200]:
> On Fri, May 1, 2015 at 9:31 PM, Paul Bolle <pebolle@...cali.nl> wrote:
> > Valentin Rothberg schreef op wo 29-04-2015 om 16:58 [+0200]:
> >> Sometimes a user might be interested to filter certain reports (e.g.,
> >> the many defconfigs).
> >
> > Is this actually useful outside of filtering out defconfigs?
> 
> It's a regex, so we can filter entire paths as well (e.g., -i
> 'arch/.*' to ignore all issues in arch/).  Until now, I only used it
> to get rid of all the defconfigs.

So, perhaps we're better off by just skipping defconfigs?

> As far as I know, it's really hard to manually configure certain
> boards.  With defconfigs, only few people have to go through the fire.
> Two years ago I tried to manually select a kernel configuration for my
> Nexus 7 and failed desperately since some feature constraints are just
> not visible/understandable from the menu.  Not that I am an ARM
> developer, but there I understood the need to have a defconfig : )

See https://lkml.org/lkml/2012/1/18/355 . Manually configuring from
scratch is, I think, simply not doable. About the only advice I'd dare
to give someone would be: somehow get a .config that works for your
machine, however old that .config might be, and use it as your base.
Probably by doing
    yes "" | make oldconfig >/dev/null

So I guess my question is: is a defconfig to be considered a ".config
that works for your machine"? And, yes, I realize "works" is a very
broad goal.


Paul Bolle

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