Messages in this thread | | | Date | Wed, 2 Feb 2011 11:56:31 +0100 | From | Tejun Heo <> | Subject | Re: [PATCH 06/10] signal: fix premature completion of group stop when interfered by ptrace |
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Hello,
On Tue, Feb 01, 2011 at 09:44:05PM -0800, Roland McGrath wrote: > > I have plans on separate out ptrace related stuff from task_struct so > > that they're allocate iff they're used which will save some tens of > > bytes on the task struct, so there at least is a plan to compensate > > for the added cruft. > > My, that sounds familiar. Oleg and I have pursued that before, though > not in exactly the same context. It sure gets complicated quickly in > the corners. But we would still like to see it get done one way or > another.
Yeap, I have mostly working code. It was necessary to allow nesting, so...
> > > But I'm not entirely convinced that we'll really need them when we > > > conclude on fully cleaning up the whole picture. > > > > I really don't know at this point. I tried to make it share one of > > the related fields but there needs to be a per-task field which is > > protected by siglock and there currently isn't any, so... > > My point was that I am not yet convinced we'll need any new bookkeeping of > that sort once we fully work out the group-stop interactions. We're still > discussing that in the other threads. So we'll see where that goes.
Yeah, sure.
Thanks.
-- tejun
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