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| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-08-06 16:50:39 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-10-07 16:01:12 -0700 |
| commit | 6587a23b6b9bdb47205ec96c703e5bf8a2d39701 (patch) | |
| tree | c5ac61d861ea8b1b6e3c4708c1db2f1f551f9b1a /kernel/rcu/tree.h | |
| parent | rcu: Make ->cpu_no_qs be a union for aggregate OR (diff) | |
| download | wireguard-linux-6587a23b6b9bdb47205ec96c703e5bf8a2d39701.tar.xz wireguard-linux-6587a23b6b9bdb47205ec96c703e5bf8a2d39701.zip | |
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.h | 3 |
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 */ /* |