linux-kernel - Re: [PATCH -tip 0/4] perf-probe updates: string support, etc.

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Message-Id: <56FC4434-EA6C-4A0C-A95B-3D7BE818774B@canonical.com>
Date:	Mon, 5 Jul 2010 10:30:47 -0400
From:	Chase Douglas <chase.douglas@...onical.com>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Mike Galbraith <efault@....de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: Re: [PATCH -tip 0/4] perf-probe updates: string support, etc.

On May 19, 2010, at 3:57 PM, Masami Hiramatsu wrote:
> Hi,
> 
> Here is a series of patches which improves perf probe to
> add below features. I cleared some coding style issues.
> 
> - String support, which enables dynamic events to trace string
>  variables instead of its address.
> 
> - Fixed-index array entry support, which allows user to trace
>  an array entry with digit index, e.g. array[0].
> 
> - Global/static variable support, which allows user to trace
>  global or static variables, as same as local one.
> 
> 
> TODOs (possible features):
>  - Support dynamic array-indexing (var[var2])
>  - Support force type-casting ((type)var)
>  - Show what deta-structure member is assigned to each argument.
>  - Better support for probes on modules
>  - More debugger like enhancements(%next, --disasm, etc.)
> 
> Thank you,
> 
> ---
> 
> Masami Hiramatsu (4):
>      perf probe: Support static and global variables
>      perf probe: Support tracing an entry of array
>      perf probe: Support "string" type
>      tracing/kprobes: Support "string" type

What's the status of these patches? They seem very useful to me, but I
don't see them in Arnaldo's tree at git.kernel.org.

Thanks,

-- Chase
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