linux-kernel - Re: [PATCH 03/15] perf: Unified API to record selective sets of arch registers

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Message-ID: <20120330130109.GC1586@m.brq.redhat.com>
Date:	Fri, 30 Mar 2012 15:01:09 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Cyrill Gorcunov <gorcunov@...nvz.org>
Cc:	acme@...hat.com, a.p.zijlstra@...llo.nl, mingo@...e.hu,
	paulus@...ba.org, cjashfor@...ux.vnet.ibm.com, fweisbec@...il.com,
	eranian@...gle.com, tzanussi@...il.com, mhiramat@...hat.com,
	rostedt@...dmis.org, robert.richter@....com, fche@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/15] perf: Unified API to record selective sets of arch
 registers

On Fri, Mar 30, 2012 at 04:51:58PM +0400, Cyrill Gorcunov wrote:
> On Wed, Mar 28, 2012 at 02:35:46PM +0200, Jiri Olsa wrote:
> ...
> > +static inline u64 perf_reg_value(struct pt_regs *regs, int idx)
> > +{
> > +	switch (idx) {
> > +	case PERF_X86_64_REG_RAX:
> > +		return regs->ax;
> > +	case PERF_X86_64_REG_RBX:
> > +		return regs->bx;
> > +	case PERF_X86_64_REG_RCX:
> > +		return regs->cx;
> > +	case PERF_X86_64_REG_RDX:
> > +		return regs->dx;
> > +	case PERF_X86_64_REG_RSI:
> > +		return regs->si;
> > +	case PERF_X86_64_REG_RDI:
> > +		return regs->di;
> > +	case PERF_X86_64_REG_R8:
> > +		return regs->r8;
> > +	case PERF_X86_64_REG_R9:
> > +		return regs->r8;
> > +	case PERF_X86_64_REG_R10:
> > +		return regs->r8;
> > +	case PERF_X86_64_REG_R11:
> > +		return regs->r8;
> > +	case PERF_X86_64_REG_R12:
> > +		return regs->r8;
> > +	case PERF_X86_64_REG_R13:
> > +		return regs->r8;
> > +	case PERF_X86_64_REG_R14:
> > +		return regs->r8;
> > +	case PERF_X86_64_REG_R15:
> > +		return regs->r8;
> 
> I guess there are too much r8's :-)
> 
> 	Cyrill

yay :)) right, one should be enough..

thanks,
jirka
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