linux-kernel - Re: [Xen-devel] [PATCH] xen: remove unused Kconfig parameter

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Message-ID: <CAMuHMdX0aJnfVVF7Y0OvOMFO8zJTBrOjTG7fFisvFievZMpLcw@mail.gmail.com>
Date:	Thu, 11 Jul 2013 23:13:57 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Paul Bolle <pebolle@...cali.nl>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Borislav Petkov <bp@...en8.de>, Matt Wilson <msw@...zon.com>,
	Michael Opdenacker <michael.opdenacker@...e-electrons.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	xen-devel@...ts.xensource.com,
	"the arch/x86 maintainers" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	virtualization@...ts.linux-foundation.org,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [Xen-devel] [PATCH] xen: remove unused Kconfig parameter

On Thu, Jul 11, 2013 at 7:57 PM, H. Peter Anvin <hpa@...or.com> wrote:
>> The check grub2 currently performs in one of its configuration scripts
>> is (reformatted):
>>     if (grep -qx "CONFIG_XEN_DOM0=y" "${config}" 2> /dev/null ||
>>         grep -qx "CONFIG_XEN_PRIVILEGED_GUEST=y" "${config}" 2> /dev/null);
>>     then echo -n "$i " ;
>>     fi
>>
>
> If only grep supported looking for more than one string at a time.
> Maybe we could construct some kind of pattern expression syntax for it,
> perhaps based on the theory of regular languages?

grep -E "(pat1|pat2|pat3|...)"?

Or am I missing something?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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