Q: drop PTRACE_SEIZE_DEVEL?

[Dmitry V. Levin]

On Mon, Mar 12, 2012 at 01:26:35PM +0100, Denys Vlasenko wrote:
> On 03/10/2012 11:17 PM, Dmitry V. Levin wrote:
> > On Thu, Feb 09, 2012 at 07:38:27PM +0100, Denys Vlasenko wrote:
> >> On 02/09/2012 05:29 PM, Dmitry V. Levin wrote:
> >>> But I'd like to hear from Denys about PTRACE_SEIZE perspective first.
> >>> We surely won't release PTRACE_SEIZE_DEVEL code enabled by default because
> >>> the kernel API might change.
> >>
> >> I'm going to ask kernel people to drop PTRACE_SEIZE_DEVEL.
> >
> > The patch was submitted in February, but current v3.3-rc6-240-gc7b2855
> > still insists on PTRACE_SEIZE_DEVEL.  Is there a prospect to release
> > without PTRACE_SEIZE_DEVEL any time soon, or should we rather leave this
> > experimental code disabled in the next release?
> 
> It's in linux-next git:
> 
> commit fe948360bf475b705c021fc9ba8ee3992c5d0d67
> Author: Denys Vlasenko <vda.linux at googlemail.com>
> Date:   Tue Mar 6 11:25:31 2012 +1100
> 
>      ptrace: remove PTRACE_SEIZE_DEVEL bit
> 
>      PTRACE_SEIZE code is tested and ready for production use, remove the code
>      which requires special bit in data argument to make PTRACE_SEIZE work.
> 
>      Strace team prepares for a new release of strace, and we would like to
>      ship the code which uses PTRACE_SEIZE, preferably after this change goes
>      into released kernel.
> 
>      Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
>      Acked-by: Tejun Heo <tj at kernel.org>
>      Acked-by: Oleg Nesterov <oleg at redhat.com>
>      Cc: Pedro Alves <palves at redhat.com>
>      Cc: Jan Kratochvil <jan.kratochvil at redhat.com>
>      Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
> 
> Looks like this change will go into linux-3.4

I suppose we can safely drop PTRACE_SEIZE_DEVEL from USE_SEIZE code now.


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