linux-kernel - Re: [PATCH 1/4] perf: Add memory load/store events generic code

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Date:	Mon, 04 Jul 2011 10:33:40 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Lin Ming <ming.m.lin@...el.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Andi Kleen <andi@...stfloor.org>,
	Stephane Eranian <eranian@...gle.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] perf: Add memory load/store events generic code

On Mon, 2011-07-04 at 08:02 +0000, Lin Ming wrote:
> +/*
> + * Memory load operation info encoding
> + */
> +
> +/* Bits(0-1) {L1, L2, L3, RAM} or {unknown, IO, uncached, reserved}
> */
> +#define MEM_LOAD_L1                    0x00
> +#define MEM_LOAD_L2                    0x01
> +#define MEM_LOAD_L3                    0x02
> +#define MEM_LOAD_RAM                   0x03
> +#define MEM_LOAD_UNKNOWN               0x00
> +#define MEM_LOAD_IO                    0x01
> +#define MEM_LOAD_UNCACHED              0x02
> +#define MEM_LOAD_RESERVED              0x03
> +
> +/* Bits(2-3) {toggle, snoop, local, remote} */
> +#define MEM_LOAD_TOGGLE                        (0x00 << 2)
> +#define MEM_LOAD_SNOOP                 (0x01 << 2)
> +#define MEM_LOAD_LOCAL                 (0x02 << 2)
> +#define MEM_LOAD_REMOTE                        (0x03 << 2)
> +
> +/* Bits(4-5) {modified, exclusive, shared, invalid} */
> +#define MEM_LOAD_MODIFIED              (0x00 << 4)
> +#define MEM_LOAD_EXCLUSIVE             (0x01 << 4)
> +#define MEM_LOAD_SHARED                        (0x02 << 4)
> +#define MEM_LOAD_INVALID               (0x03 << 4) 

Did anybody check with the other PMUs that have similar features like
PowerPC and possibly IA64?

I keep mentioning this, nobody seems interested.
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