linux-kernel - Re: [PATCH 2/2] x86: Add "make tinyconfig" to configure the tiniest possible kernel

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Message-ID: <20140807193824.GA2351@ravnborg.org>
Date:	Thu, 7 Aug 2014 21:38:24 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Josh Triplett <josh@...htriplett.org>
Cc:	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	David Rientjes <rientjes@...gle.com>,
	"Luis R. Rodriguez" <mcgrof@...e.com>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] x86: Add "make tinyconfig" to configure the tiniest
 possible kernel

> 
> > > diff --git a/arch/x86/configs/tiny.config b/arch/x86/configs/tiny.config
> > > new file mode 100644
> > > index 0000000..8f0e54c
> > > --- /dev/null
> > > +++ b/arch/x86/configs/tiny.config
> > > @@ -0,0 +1,5 @@
> > > +CONFIG_CC_OPTIMIZE_FOR_SIZE=y
> > > +CONFIG_KERNEL_XZ=y
> > > +CONFIG_NOHIGHMEM=y
> > > +CONFIG_OPTIMIZE_INLINING=y
> > > +CONFIG_SLOB=y
> > All the above are general options that apply equal to arm than to x86.
> 
> NOHIGHMEM isn't.
You are right - as it is x86 specific it should had been prefixed
with X86_ to document so.

As the symbol is only relevant for X86 it will not hurt anyone else,
so it is OK to have it.
But it would be nice to document in tiny.config that
this is a X86 specific symbol.

	Sam
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