linux-kernel - Re: perf on biarch

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Message-ID: <53E52A1C.8010504@gmail.com>
Date:	Fri, 08 Aug 2014 13:50:52 -0600
From:	David Ahern <dsahern@...il.com>
To:	Matthieu CASTET <matthieu.castet@...rot.com>,
	linux-kernel@...r.kernel.org
Subject: Re: perf on biarch

On 8/8/14, 10:40 AM, Matthieu CASTET wrote:
> Hi,
>
> I have a 64 bits kernel running with 32 bits binaries.
> If I run 32 bits perf on this 64 bits kernel 3.14, I got weird result :
>
> - perf trace doesn't work [1]

I have patches that fix that:
     git clone https://github.com/dsahern/linux.git
     git checkout perf-full-monty

And if autodetection fails you can manually force it with -M x86.

David
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