Re: Attempted summary of suspend-blockers LKML thread, take three

Paul E. McKenney
2010-08-11T00:44:15Z

On Tue, Aug 10, 2010 at 03:44:05PM +0100, Alan Cox wrote:
> Which reminds me. I forgot a very important way that user space signals
> the kernel as to its intents.
>
> The kernel can see whether code is sleeping by choice or sleeping because
> someone blocked it (eg a page fault). The kernel also knows a lot about
> the event being waited for (much more so in -rt than base).
>
> We don't capture all of that info but it seems it would advance progress
> in the right direction to do so better.

As one approach of many, this makes a great deal of sense.

Thanx, Paul