linux-kernel - Re: [PATCH 02/23] perf: Unified API to record selective sets of arch registers

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Message-ID: <20120620173900.GB1768@m.brq.redhat.com>
Date:	Wed, 20 Jun 2012 19:39:00 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	acme@...hat.com, a.p.zijlstra@...llo.nl, mingo@...e.hu,
	paulus@...ba.org, cjashfor@...ux.vnet.ibm.com, eranian@...gle.com,
	gorcunov@...nvz.org, tzanussi@...il.com, mhiramat@...hat.com,
	robert.richter@....com, fche@...hat.com,
	linux-kernel@...r.kernel.org, masami.hiramatsu.pt@...achi.com,
	drepper@...il.com, asharma@...com, benjamin.redelings@...cent.org
Subject: Re: [PATCH 02/23] perf: Unified API to record selective sets of arch
 registers

On Wed, Jun 20, 2012 at 06:42:36PM +0200, Frederic Weisbecker wrote:
> On Tue, Jun 19, 2012 at 05:47:53PM +0200, Jiri Olsa wrote:

SNIP

> > diff --git a/arch/x86/include/asm/perf_regs.h b/arch/x86/include/asm/perf_regs.h
> > new file mode 100644
> > index 0000000..0397bfc
> > --- /dev/null
> > +++ b/arch/x86/include/asm/perf_regs.h
> > @@ -0,0 +1,34 @@
> > +#ifndef _ASM_X86_PERF_REGS_H
> > +#define _ASM_X86_PERF_REGS_H
> > +
> > +enum perf_event_x86_regs {
> > +	PERF_REG_X86_AX,
> > +	PERF_REG_X86_BX,
> > +	PERF_REG_X86_CX,
> > +	PERF_REG_X86_DX,
> > +	PERF_REG_X86_SI,
> > +	PERF_REG_X86_DI,
> > +	PERF_REG_X86_BP,
> > +	PERF_REG_X86_SP,
> > +	PERF_REG_X86_IP,
> > +	PERF_REG_X86_FLAGS,
> > +	PERF_REG_X86_CS,
> > +	PERF_REG_X86_DS,
> > +	PERF_REG_X86_ES,
> > +	PERF_REG_X86_FS,
> > +	PERF_REG_X86_GS,
> > +	PERF_REG_X86_R8,
> > +	PERF_REG_X86_R9,
> > +	PERF_REG_X86_R10,
> > +	PERF_REG_X86_R11,
> > +	PERF_REG_X86_R12,
> > +	PERF_REG_X86_R13,
> > +	PERF_REG_X86_R14,
> > +	PERF_REG_X86_R15,
> > +	PERF_REG_X86_SS,
> > +
> > +	/* non ABI */
> > +	PERF_REG_X86_64_MAX = PERF_REG_X86_SS + 1,
> 
> SS also exist in 32 bits, right?
> Although I guess userspace doesn't care much.

yes it's there
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