linux-kernel - Re: [PATCH 0/7] uretprobes: return probes implementation

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Message-ID: <20130323175609.GA4076@redhat.com>
Date:	Sat, 23 Mar 2013 18:56:09 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Josh Stone <jistone@...hat.com>
Cc:	Anton Arapov <anton@...hat.com>,
	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Frank Eigler <fche@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	adrian.m.negreanu@...el.com, Torsten.Polle@....de
Subject: Re: [PATCH 0/7] uretprobes: return probes implementation

On 03/22, Josh Stone wrote:
>
> On 03/22/2013 08:10 AM, Oleg Nesterov wrote:
> > This looks simple, but probably we need to add the additional "ulong bp_vaddr"
> > argument for rp_handler().
>
> FWIW, in SystemTap we don't currently do anything that would need
> bp_vaddr.

I know. This is not for systemtap.

> The uprobe_consumer already gives the context, so I'm not
> sure what else you would do with the *entry* address of the function
> that just returned.

context - yes, but not address (by the time ret_handler is called).

Oleg.

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