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

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Date:	Fri, 30 Mar 2012 16:51:58 +0400
From:	Cyrill Gorcunov <gorcunov@...nvz.org>
To:	Jiri Olsa <jolsa@...hat.com>
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 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
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