linux-kernel - Re: [PATCH -tip v8 5/7] x86: add pt_regs register and stack access APIs

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Message-ID: <20090601234006.GA12629@elte.hu>
Date:	Tue, 2 Jun 2009 01:40:06 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Masami Hiramatsu <mhiramat@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	kvm <kvm@...r.kernel.org>,
	DLE <dle-develop@...ts.sourceforge.net>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Roland McGrath <roland@...hat.com>, linux-arch@...r.kernel.org
Subject: Re: [PATCH -tip v8 5/7] x86: add pt_regs register and stack access
	APIs


* Christoph Hellwig <hch@...radead.org> wrote:

> > +	if (n < NR_REGPARMS) {
> > +		switch (n) {
> > +		case 0: return regs->ax;
> > +		case 1: return regs->dx;
> > +		case 2: return regs->cx;
> > +		}
> 
> Normal kernel style would be
> 
> 		switch (n) {
> 		case 0:
> 			return regs->ax;
> 		case 1:
> 			return regs->dx;
> 		case 2:
> 			return regs->cx;
> 		}

the original single-line shortcut is acceptable too.

	Ingo
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