Subject: Re: [PATCH v3 2.6.39-rc1-tip 18/26] 18: uprobes: commonly used
 filters.
From: Peter Zijlstra <peterz@infradead.org>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>, Steven Rostedt <rostedt@goodmis.org>,
        Linux-mm <linux-mm@kvack.org>,
        Arnaldo Carvalho de Melo <acme@infradead.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Jonathan Corbet <corbet@lwn.net>,
        Christoph Hellwig <hch@infradead.org>,
        Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
        Oleg Nesterov <oleg@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        SystemTap <systemtap@sources.redhat.com>,
        Jim Keniston <jkenisto@linux.vnet.ibm.com>,
        Roland McGrath <roland@hack.frob.com>,
        Andi Kleen <andi@firstfloor.org>, LKML <linux-kernel@vger.kernel.org>
In-Reply-To: <20110421110911.GE10698@linux.vnet.ibm.com>
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Date: Thu, 21 Apr 2011 13:37:15 +0200
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On Thu, 2011-04-21 at 16:39 +0530, Srikar Dronamraju wrote:
> > What you want is to save the pid-namespace of the task creating the
> > filter in your uprobe_simple_consumer and use that to obtain the task's
> > pid for matching with the provided number.
> > 
> 
> Okay, will do by adding the pid-namespace of the task creating the
> filter in the uprobe_simple_consumer. 

Maybe you could convert to the global pid namespace on construction and
always use that for comparison.

That would avoid the namespace muck on comparison.. 

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