linux-kernel - Re: [PATCH] perf tools: get version from uname(2), not /proc

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Date:	Wed, 7 Oct 2015 11:19:17 +0300
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	Jiri Olsa <jolsa@...hat.com>,
	Matt Mullins <mmullins@...pensource.com>
Cc:	acme@...nel.org, Vinson Lee <vlee@...pensource.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Kan Liang <kan.liang@...el.com>,
	Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf tools: get version from uname(2), not /proc

On 07/10/15 11:18, Jiri Olsa wrote:
> On Tue, Oct 06, 2015 at 03:53:14PM -0700, Matt Mullins wrote:
>> Tools in kmod (e.g. modprobe) compose the module path from the release
>> from uname(2).  Because we use the UNAME26 personality, we need perf to
>> find modules located at the same path as the system tools.
> 
> I guess it's easy to google this up, but could you
> please state in the changelog what's the difference
> between the current version and the UNAME26 one?
> 
> Also state (and check) this change wouldn't affect other
> parts of the code that use this version (if there's any).

Isn't the machine root dir for guests? uname() won't work for them.


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