linux-kernel - Re: [PATCH v3 3/3] perf probe: Show better error message when failed to find variable

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Message-ID: <20150511093122.GB31869@gmail.com>
Date:	Mon, 11 May 2015 11:31:22 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	He Kuang <hekuang@...wei.com>
Cc:	masami.hiramatsu.pt@...achi.com, a.p.zijlstra@...llo.nl,
	acme@...nel.org, jolsa@...nel.org, mingo@...hat.com,
	wangnan0@...wei.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/3] perf probe: Show better error message when failed
 to find variable


* He Kuang <hekuang@...wei.com> wrote:

> Indicate to check variable location range in error message when we got
> failed to find the variable.
> 
> Before this patch:
> 
>   $ perf probe --add 'generic_perform_write+118 bytes'
>   Failed to find the location of bytes at this address.
>    Perhaps, it has been optimized out.
>     Error: Failed to add events.

Btw., you talk about 'variables', but generic_perform_write() is a 
function name?

Thanks,

	Ingo
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