Re: [PATCH] move put_task_struct() reaping into a thread [Re: 2.6.18-rt1]

Ingo Molnar
2006-09-21T07:02:41Z

* Bill Huey <billh@gnuppy.monkey.org> wrote:

> On Wed, Sep 20, 2006 at 04:19:07PM +0200, Ingo Molnar wrote:
> > I'm pleased to announce the 2.6.18-rt1 tree, which can be downloaded
> > from the usual place:
> ...
> > as usual, bugreports, fixes and suggestions are welcome,
>
> Speaking of which...
>
> This patch moves put_task_struct() reaping into a thread instead of an
> RCU callback function [...]

had some time to think about it since yesterday: RCU reaping is done in
softirqs (check out the softirq-rcu threads on your -rt box), that's why
i removed the delayed-task-drop code to begin with. Now i dont doubt
that you saw crashes under 2.6.17 - but did you manage to figure out
what the reason is for those crashes, and do those reasons really
necessiate the pushing of task-reapdown into yet another set of kernel
threads?

Ingo