linux-kernel - Re: [PATCH] perf: make perf.data more self-descriptive (v4)

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Message-ID: <1315838611.26517.51.camel@twins>
Date:	Mon, 12 Sep 2011 16:43:31 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	David Ahern <dsahern@...il.com>, linux-kernel@...r.kernel.org,
	acme@...hat.com, mingo@...e.hu
Subject: Re: [PATCH] perf: make perf.data more self-descriptive (v4)

On Mon, 2011-09-12 at 16:40 +0200, Stephane Eranian wrote:
> I don't think this should be the test to detect endianess.

You should be able to tell the endianness from the PERF_MAGIC string, it
stores the string as a u64, so depending on endianness it reads back as
either: PERFFILE or ELIFFREP or whatever the bswap64 result is.
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