On Tue, Jul 31, 2012 at 10:56:23AM -0400, Steven Rostedt wrote:
> On Tue, 2012-07-31 at 10:51 -0400, Steven Rostedt wrote:
>
> > > OK, I will bite. How about using something like RCU_NONIDLE(), either
> > > directly or open-coded, to make it a legal call site?
> >
> > OK, then something like:
> >
> > RCU_NONIDLE(max_data = task_uid(tsk));
> >
> > would work when called normally or with idle?
> >
>
> The comment above RCU_NONIDLE() says:
>
> This macro may be used from process-level code only.
>
> Although I'm not sure what a 'level' is. Do you mean process-context? If
> so, then this will not work because it can be called from non process
> level code (return from interrupt), or any interrupt that enables
> interrupts.
Yep, process context. It seems that I was naively expecting the
calls in interrupt context to be covered by rcu_irq_enter() and
rcu_irq_exit(). I take it that these calls are happening outside of
the rcu_irq_enter()-protected region?
Thanx, Paul
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