linux-kernel - Re: [PATCH 24/24] x86/oprofile: Reanaming op_model_athlon.c to op_model

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Date:	Sat, 26 Jul 2008 12:17:16 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Robert Richter <robert.richter@....com>
Cc:	Barry Kasindorf <barry.kasindorf@....com>,
	Thomas Gleixner <tglx@...utronix.de>,
	oprofile-list <oprofile-list@...ts.sourceforge.net>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 24/24] x86/oprofile: Reanaming op_model_athlon.c to
	op_model_amd.c


* Robert Richter <robert.richter@....com> wrote:

> +#define NUM_COUNTERS 4
> +#define NUM_CONTROLS 4
> +
> +#define CTR_IS_RESERVED(msrs, c) (msrs->counters[(c)].addr ? 1 : 0)
> +#define CTR_READ(l, h, msrs, c) do {rdmsr(msrs->counters[(c)].addr, (l), (h)); } while (0)
> +#define CTR_WRITE(l, msrs, c) do {wrmsr(msrs->counters[(c)].addr, -(unsigned int)(l), -1); } while (0)
> +#define CTR_OVERFLOWED(n) (!((n) & (1U<<31)))
> +
> +#define CTRL_IS_RESERVED(msrs, c) (msrs->controls[(c)].addr ? 1 : 0)
> +#define CTRL_READ(l, h, msrs, c) do {rdmsr(msrs->controls[(c)].addr, (l), (h)); } while (0)
> +#define CTRL_WRITE(l, h, msrs, c) do {wrmsr(msrs->controls[(c)].addr, (l), (h)); } while (0)
> +#define CTRL_SET_ACTIVE(n) (n |= (1<<22))
> +#define CTRL_SET_INACTIVE(n) (n &= ~(1<<22))
> +#define CTRL_CLEAR_LO(x) (x &= (1<<21))
> +#define CTRL_CLEAR_HI(x) (x &= 0xfffffcf0)
> +#define CTRL_SET_ENABLE(val) (val |= 1<<20)
> +#define CTRL_SET_USR(val, u) (val |= ((u & 1) << 16))
> +#define CTRL_SET_KERN(val, k) (val |= ((k & 1) << 17))
> +#define CTRL_SET_UM(val, m) (val |= (m << 8))
> +#define CTRL_SET_EVENT_LOW(val, e) (val |= (e & 0xff))
> +#define CTRL_SET_EVENT_HIGH(val, e) (val |= ((e >> 8) & 0xf))
> +#define CTRL_SET_HOST_ONLY(val, h) (val |= ((h & 1) << 9))
> +#define CTRL_SET_GUEST_ONLY(val, h) (val |= ((h & 1) << 8))

while at it, it would be nice to have a followup cleanup that aligns 
these vertically.

> +#ifdef CONFIG_OPROFILE_IBS

btw., why not include IBS support unconditionally in the _amd.ko module? 
It's all loadable anyway - and the size difference is small. That would 
get rid of a ton of #ifdef complexity.

	Ingo
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