linux-kernel - Re: [RFC 0/6] x86 tip asm ENTRY,ENDPROC cleanup

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Message-ID: <20090219161329.GA9556@elte.hu>
Date:	Thu, 19 Feb 2009 17:13:29 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Alexander van Heukelum <heukelum@...tmail.fm>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	Jan Beulich <jbeulich@...ell.com>, linux-kernel@...r.kernel.org
Subject: Re: [RFC 0/6] x86 tip asm ENTRY,ENDPROC cleanup


* H. Peter Anvin <hpa@...or.com> wrote:

> Alexander van Heukelum wrote:
> > 
> > Hi Peter,
> > 
> > I see. But that would be new behaviour. I would propose to use
> > completely separate macro's to handle frame-setup code generation,
> > and keep ENTRY/GLOBAL/END/ENDPROC only for setting metadata and
> > alignment. I think it's worth it to spell out code-generating
> > macro's explicitly: there are not that many asm functions, and
> > quite a few of them would need special handling. I think noone
> > wants to see an ENDPROC_NOFRAMETEARDOWN ;).
> > 
> > The common-case example would look like this.
> > 
> > GLOBAL(c_callable_function)
> >         ENTER
> >         [asm-code]
> >         LEAVE
> >         ret
> > ENDPROC(c_callable_function)
> > 
> 
> I guess I'm a bit concerned about people omitting them, but it's equally
> concerning that people use the wrong macros, so yes, it's probably the
> better thing in the long run.

ok - i've applied Cyrill's patches to tip/x86/asm.

	Ingo
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