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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-08-06 16:50:39 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-10-07 16:01:12 -0700
commit6587a23b6b9bdb47205ec96c703e5bf8a2d39701 (patch)
treec5ac61d861ea8b1b6e3c4708c1db2f1f551f9b1a /kernel/rcu/tree.h
parent5b74c458906fc4a62f932ee8bb801d29baf15fec (diff)
downloadlinux-sh-6587a23b6b9bdb47205ec96c703e5bf8a2d39701.tar.gz
rcu: Switch synchronize_sched_expedited() to IPI
This commit switches synchronize_sched_expedited() from stop_one_cpu_nowait() to smp_call_function_single(), thus moving from an IPI and a pair of context switches to an IPI and a single pass through the scheduler. Of course, if the scheduler actually does decide to switch to a different task, there will still be a pair of context switches, but there would likely have been a pair of context switches anyway, just a bit later. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu/tree.h')
-rw-r--r--kernel/rcu/tree.h3
1 files changed, 0 insertions, 3 deletions
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 3eee48bcf52b..1b969cef8fe4 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -324,9 +324,6 @@ struct rcu_data {
/* ticks this CPU has handled */
/* during and after the last grace */
/* period it is aware of. */
- struct cpu_stop_work exp_stop_work;
- /* Expedited grace-period control */
- /* for CPU stopping. */
/* 2) batch handling */
/*