16 Feb
2012
16 Feb
'12
10:14 a.m.
On Thu, 2012-02-16 at 14:31 +1100, Benjamin Herrenschmidt wrote:
On Wed, 2012-02-15 at 16:01 +0100, Peter Zijlstra wrote:
Thing is, the scheduler doesn't care about completion, all it needs is to be able to kick-start the thing atomically. So you really have to wait for it or can you do an interrupt driven state machine?
Or the scheduler callback could schedule a wq to do the job ?
That'll end up being very ugly due to lock inversion etc. If we can get out of this using self-IPIs I'd much prefer that.