linux-kernel - Re: [PATCH] uprobes: Add exports for module use

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Message-ID: <50F08749.2020306@redhat.com>
Date:	Fri, 11 Jan 2013 13:42:33 -0800
From:	Josh Stone <jistone@...hat.com>
To:	Christoph Hellwig <hch@...radead.org>
CC:	oleg@...hat.com, srikar@...ux.vnet.ibm.com, mingo@...nel.org,
	peterz@...radead.org, anton@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] uprobes: Add exports for module use

Hi Christoph,

On 01/11/2013 01:32 AM, Christoph Hellwig wrote:
> On Thu, Jan 10, 2013 at 03:01:46PM -0800, Josh Stone wrote:
>> The original pull message for uprobes (commit 654443e2) noted:
>>
>>   This tree includes uprobes support in 'perf probe' - but SystemTap
>>   (and other tools) can take advantage of user probe points as well.

I believe this quoted line already signaled the intent that SystemTap
use should be allowed.

> Get systemtap into the mainline kernel tree and we can talk.

This is unlikely to ever happen, nor do I think it's necessarily
appropriate.  For instance, we are also developing an alternate mode of
operation that uses Dyninst instead of kernel modules.  We're keeping
both modes for their different trade-offs, but in general the tool's
relationship with the kernel is somewhat weaker now.

Thanks,
Josh

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