linux-kernel - Re: Re: [PATCH] perf/probe: Provide perf interface for uprobes

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Message-ID: <20120412151037.GC21587@linux.vnet.ibm.com>
Date:	Thu, 12 Apr 2012 20:40:37 +0530
From:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:	Arnaldo Carvalho de Melo <acme@...radead.org>
Cc:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-mm <linux-mm@...ck.org>, Oleg Nesterov <oleg@...hat.com>,
	Andi Kleen <andi@...stfloor.org>,
	Christoph Hellwig <hch@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Anton Arapov <anton@...hat.com>
Subject: Re: Re: [PATCH] perf/probe: Provide perf interface for uprobes

>  $ perf probe libc malloc
> 
> 	Makes it even easier to use.
> 
> 	Its just when one asks for something that has ambiguities that
> the tool should ask the user to be a bit more precise to remove such
> ambiguity.
> 
> 	After all...
> 

Another case 
perf probe do_fork clone_flags now looks for variable clone_flags in
kernel function do_fork.

But if we allow to trace perf probe zsh zfree; then 
'perf probe do_fork clone_flags' should it check for do_fork executable
or not? If it does check and finds one, and searches for clone_flags
function and doesnt find, then should it continue with searching the
kernel?

-- 
Thanks and Regards
Srikar

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