Directed yield.

Hi Andrew,
nobody has complained about my spinlock yield patches. There are now three patches in the patch set: the _raw_[spin,read,write]_relax introduction, the powerpc enablement and the s390 diag 0x9c patch. Please add to -mm.

blue skies,
  Martin.

Martin Schwidefsky
Linux for zSeries Development & Services
IBM Deutschland Entwicklung GmbH

"Reality continues to ruin my life." - Calvin.

Complain.

I had to hunt around a bit to discover that this functionality has something to do with "giving up the timeslice of a virtual cpu in favour of a specific cpu". And also that it is expected to be of some briefly-alluded-to benefit on powerpc.

So... Could you please flesh out the description/rationale rather a lot and cc linux-kernel on the patches?

Thanks.