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Subject: Re: [PATCH v8 3.2.0-rc5 1/9] uprobes: Install and remove
 breakpoints.
From: Peter Zijlstra <peterz@infradead.org>
Date: Fri, 06 Jan 2012 11:57:41 +0100
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References: <20111216122756.2085.95791.sendpatchset@srdronam.in.ibm.com>
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To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>, Oleg Nesterov <oleg@redhat.com>, Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@linux-foundation.org>, LKML <linux-kernel@vger.kernel.org>, Linux-mm <linux-mm@kvack.org>, Andi Kleen <andi@firstfloor.org>, Christoph Hellwig <hch@infradead.org>, Steven Rostedt <rostedt@goodmis.org>, Roland McGrath <roland@hack.frob.com>, Thomas Gleixner <tglx@linutronix.de>, Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>, Arnaldo Carvalho de Melo <acme@infradead.org>, Anton Arapov <anton@redhat.com>, Ananth N Mavinakayanahalli <ananth@in.ibm.com>, Jim Keniston <jkenisto@linux.vnet.ibm.com>, Stephen Rothwell <sfr@canb.auug.org.au>

On Fri, 2012-01-06 at 11:44 +0530, Srikar Dronamraju wrote:
>         - consumers for the uprobe is NULL, so mmap_uprobe will not
>           insert new breakpoints which correspond to this uprobe until
>           or unless another consumer gets added for the same probe.
>=20
>         - If a new consumer gets added for this probe, we reuse the
>           uprobe struct.

Ok, and when we install a new 'first' consumer we'll again try and
install all breakpoints ignoring those that were already there?

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