Re: [RFC][PATCH 0/6] using lockdep to validate rcu usage

Ingo Molnar
2007-09-19T13:43:48Z

* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:

> This patch set uses lockdep to validate rcu usage.
>
> It annotates rcu_read_{,un}lock{,_bh}() to catch imbalances. And
> further uses that information to establish a proper context for
> rcu_dereference().
>
> It also separates implicit from explicit preempt_disable() usage, in
> order to separate rcu_dereference() from the locking model.
>
> A kernel (2.6.23-rc4-mm1) with these patches boots but does have some
> funnies - I suspect it calls printf from places it doesn't like.
>
> The first patch should be safe to apply, the rest is RFC.

great work! The patches look good to me.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Ingo