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To: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
       Steven Rostedt <rostedt@goodmis.org>, Ingo Molnar <mingo@elte.hu>,
       lkml <linux-kernel@vger.kernel.org>,
       Thomas Gleixner <tglx@linutronix.de>,
       Arnaldo Carvalho de Melo <acme@redhat.com>,
       Mike Galbraith <efault@gmx.de>, Paul Mackerras <paulus@samba.org>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>,
       Christoph Hellwig <hch@infradead.org>,
       Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
       Jim Keniston <jkenisto@us.ibm.com>,
       systemtap <systemtap@sources.redhat.com>,
       DLE <dle-develop@lists.sourceforge.net>
Subject: Re: [PATCH tracing/kprobes v2 0/5] tracing/kprobes, 	perf: perf probe support take 2
References: <20091002214834.30906.86502.stgit@dhcp-100-2-132.bos.redhat.com>
From: fche@redhat.com (Frank Ch. Eigler)
Date: Mon, 05 Oct 2009 10:54:06 -0400
In-Reply-To: <20091002214834.30906.86502.stgit@dhcp-100-2-132.bos.redhat.com> (Masami Hiramatsu's message of "Fri, 02 Oct 2009 17:48:34 -0400")
Message-ID: <y0mocolj3ht.fsf@fche.csb>
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Masami Hiramatsu <mhiramat@redhat.com> writes:

> [...]
> These patches introduce 'perf probe' command and update kprobe-tracer. [...]
> Usage
> -----
>  perf probe [<options>] -P 'PROBEDEF' [-P 'PROBEDEF' ...]
> [...]
>     -k, --vmlinux <file>  vmlinux/module pathname
>     -r, --release <rel>   kernel release
> [...]

Can you outline a reason for the -r flag?  We use it in systemtap for
cross-compiling purposes, but I didn't think perf was interested in that.

- FChE
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