linux-kernel - Re: [PATCHSET ptrace] ptrace: implement PTRACE_SEIZE/INTERRUPT and group stop notification, take#4

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Message-ID: <20110602123105.GD10410@mtj.dyndns.org>
Date:	Thu, 2 Jun 2011 21:31:05 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	vda.linux@...glemail.com, jan.kratochvil@...hat.com,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, indan@....nu, bdonlan@...il.com,
	pedro@...esourcery.com
Subject: Re: [PATCHSET ptrace] ptrace: implement PTRACE_SEIZE/INTERRUPT and
 group stop notification, take#4

Hello, Oleg.

On Wed, Jun 01, 2011 at 02:39:03PM +0900, Tejun Heo wrote:
> I'll test different corner cases (different thread doing
> waking/sleeping, race against INTERRUPT kind of things) and let you
> know how it goes.

I've tested threaded one and INTERRUPT immediate re-triggering and at
least the apparent cases work fine.  I've re-generated the git tree on
top of 3.0-rc1 with the updated patches.

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git review-ptrace-seize

The commit ID should be 7eae14288e745cfaabeb035fa67f89eb63a1aff7.  As
git.korg seems to be taking quite a while to sync, it might be a
better idea to pull from master.korg.

 ssh://master.kernel.org/pub/scm/linux/kernel/git/tj/misc.git review-ptrace-seize

IIRC, pending issues are...

* Which signo to use in exit_code on STOP traps.

* Implicit signal on clone.

* What to do about events which are reported by genuine SIGTRAP
  generation?

* Group leader exit issue.

Thanks.

-- 
tejun
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