diff options
| author | Paul E. McKenney <[email protected]> | 2012-06-25 08:41:11 -0700 |
|---|---|---|
| committer | Paul E. McKenney <[email protected]> | 2012-09-23 07:41:54 -0700 |
| commit | b4be093fee0200789df59b6c90e2d099a20f55b3 (patch) | |
| tree | 5eb8367be67bde57671240bfeb149c4c670ffd1c /lib/mpi/mpi-inline.h | |
| parent | 4cdfc175c25c89eedc08460b5e6239c2ec67fcb6 (diff) | |
rcu: Allow RCU quiescent-state forcing to be preempted
RCU quiescent-state forcing is currently carried out without preemption
points, which can result in excessive latency spikes on large systems
(many hundreds or thousands of CPUs). This patch therefore inserts
a voluntary preemption point into force_qs_rnp(), which should greatly
reduce the magnitude of these spikes.
Reported-by: Mike Galbraith <[email protected]>
Reported-by: Dimitri Sivanich <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Reviewed-by: Josh Triplett <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-inline.h')
0 files changed, 0 insertions, 0 deletions