From: Christoph Hellwig <hch@infradead.org>
To: Tejun Heo <tj@kernel.org>
Cc: linux-kernel@vger.kernel.org, oleg@redhat.com,
akpm@linux-foundation.org, torvalds@linux-foundation.org,
hch@infradead.org
Subject: Re: [PATCHSET] ptrace: kill most tracehooks
Date: Mon, 20 Jun 2011 07:16:58 -0400 [thread overview]
Message-ID: <20110620111658.GA19720@infradead.org> (raw)
In-Reply-To: <1308322240-8247-1-git-send-email-tj@kernel.org>
On Fri, Jun 17, 2011 at 04:50:33PM +0200, Tejun Heo wrote:
> Hello,
>
> At this point, tracehooks aren't useful to mainline kernel and mostly
> just add an extra layer of obfuscation. Although they have comments,
> without actual in-kernel users, it is difficult to tell what are their
> assumptions and they're actually trying to achieve. To mainline
> kernel, they just aren't worth keeping around.
>
> This patchset kills most tracehooks which aren't used from arch codes.
> The remaining ones will be dealt with with future changes.
Thanks, this makes the whole ptrace interaction a lot more sensible and
actually possible to follow.
prev parent reply other threads:[~2011-06-20 11:17 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-17 14:50 Tejun Heo
2011-06-17 14:50 ` [PATCH 1/7] ptrace: kill task_ptrace() Tejun Heo
2011-06-17 14:50 ` [PATCH 2/7] ptrace: introduce ptrace_event_enabled() and simplify ptrace_event() and tracehook_prepare_clone() Tejun Heo
2011-06-17 14:50 ` [PATCH 3/7] ptrace: move SIGTRAP on exec(2) logic to ptrace_event() Tejun Heo
2011-06-20 20:25 ` Oleg Nesterov
2011-06-21 7:21 ` Tejun Heo
2011-06-21 20:40 ` Oleg Nesterov
2011-06-23 8:58 ` Tejun Heo
2011-06-17 14:50 ` [PATCH 4/7] ptrace: kill trivial tracehooks Tejun Heo
2011-06-17 14:50 ` [PATCH 5/7] ptrace: kill clone/exec tracehooks Tejun Heo
2011-06-20 20:33 ` Oleg Nesterov
2011-06-21 7:24 ` Tejun Heo
2011-06-17 14:50 ` [PATCH 6/7] ptrace: kill detah tracehooks Tejun Heo
2011-06-20 19:39 ` Oleg Nesterov
2011-06-21 20:23 ` Oleg Nesterov
2011-06-23 9:24 ` Tejun Heo
2011-06-22 21:07 ` [PATCH 0/8] kill task_detached() (Was: ptrace: kill detah tracehooks) Oleg Nesterov
2011-06-22 21:08 ` [PATCH 1/8] make do_notify_parent() return bool Oleg Nesterov
2011-06-23 9:52 ` Tejun Heo
2011-06-22 21:08 ` [PATCH 2/8] kill tracehook_notify_death() Oleg Nesterov
2011-06-23 12:22 ` Tejun Heo
2011-06-23 13:21 ` Oleg Nesterov
2011-06-23 13:27 ` Tejun Heo
2011-06-23 13:28 ` Oleg Nesterov
2011-06-23 17:06 ` Oleg Nesterov
2011-06-25 14:15 ` Tejun Heo
2011-06-26 20:51 ` Oleg Nesterov
2011-06-27 8:24 ` Tejun Heo
2011-06-27 14:21 ` Oleg Nesterov
2011-06-27 14:36 ` Tejun Heo
2011-06-22 21:08 ` [PATCH 3/8] __ptrace_detach: avoid task_detached(), check do_notify_parent() Oleg Nesterov
2011-06-23 13:25 ` Tejun Heo
2011-06-22 21:09 ` [PATCH 4/8] make do_notify_parent() __must_check, update the callers Oleg Nesterov
2011-06-23 13:38 ` Tejun Heo
2011-06-22 21:09 ` [PATCH 5/8] reparent_leader: check EXIT_DEAD instead of task_detached() Oleg Nesterov
2011-06-22 21:09 ` [PATCH 6/8] kill task_detached() Oleg Nesterov
2011-06-22 21:10 ` [PATCH 7/8] do not change dead_task->exit_signal Oleg Nesterov
2011-06-22 21:10 ` [PATCH 8/8] redefine thread_group_leader() as exit_signal >= 0 Oleg Nesterov
2011-06-23 13:56 ` Tejun Heo
2011-06-17 14:50 ` [PATCH 7/7] ptrace: s/tracehook_tracer_task()/ptrace_parent()/ Tejun Heo
2011-06-20 20:16 ` Oleg Nesterov
2011-06-21 11:44 ` John Johansen
2011-06-23 9:14 ` Tejun Heo
2011-06-20 11:16 ` Christoph Hellwig [this message]
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