[PATCH smp 0/2] Provide CSD lock timeout diagnostics

[Paul E. McKenney]

Hello!

This is a sneak preview of a series providing diagnostics to help track
down problems that would result in excessive csd_unlock() latencies:

1.	Add source and destination CPUs to __call_single_data.
	I freely admit that I found the union declaration a
	bit confusing!

2.	Provide CSD lock timeout diagnostics.

						Thanx, Paul

------------------------------------------------------------------------

 include/linux/smp.h       |    3 +
 include/linux/smp_types.h |    3 +
 kernel/smp.c              |  135 +++++++++++++++++++++++++++++++++++++++++++++-
 lib/Kconfig.debug         |   10 +++
 4 files changed, 150 insertions(+), 1 deletion(-)