linux/kernel/rcu
Paul E. McKenney ba1c64c272 rcu: Report expedited grace periods at context-switch time
This commit reduces the latency of expedited RCU grace periods by
reporting a quiescent state for the CPU at context-switch time.
In CONFIG_PREEMPT=y kernels, if the outgoing task is still within an
RCU read-side critical section (and thus still blocking some grace
period, perhaps including this expedited grace period), then that task
will already have been placed on one of the leaf rcu_node structures'
->blkd_tasks list.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2018-08-30 16:02:38 -07:00
..
Kconfig rcu: Drive TASKS_RCU directly off of PREEMPT 2017-08-17 07:26:04 -07:00
Kconfig.debug rcu: Move RCU debug Kconfig options to kernel/rcu 2017-06-08 18:52:44 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rcu_segcblist.c rcu: Simplify and inline cpu_needs_another_gp() 2018-05-15 10:30:59 -07:00
rcu_segcblist.h rcu: Simplify and inline cpu_needs_another_gp() 2018-05-15 10:30:59 -07:00
rcu.h Merge branches 'fixes1.2018.07.12b' and 'torture1.2018.07.12b' into HEAD 2018-07-12 15:42:41 -07:00
rcuperf.c Merge branches 'fixes1.2018.07.12b' and 'torture1.2018.07.12b' into HEAD 2018-07-12 15:42:41 -07:00
rcutorture.c rcutorture: Test extended "rcu" read-side critical sections 2018-08-30 16:02:35 -07:00
srcutiny.c sched/swait: Rename to exclusive 2018-06-20 11:35:56 +02:00
srcutree.c srcu: Add grace-period number to rcutorture statistics printout 2018-07-12 15:39:25 -07:00
sync.c doc: Fix various RCU docbook comment-header problems 2017-10-19 22:26:11 -04:00
tiny.c rcu: Improve rcu_note_voluntary_context_switch() reporting 2018-07-12 15:39:12 -07:00
tree_exp.h rcu: Defer reporting RCU-preempt quiescent states when disabled 2018-08-30 16:02:34 -07:00
tree_plugin.h rcu: Report expedited grace periods at context-switch time 2018-08-30 16:02:38 -07:00
tree.c rcu: Apply RCU-bh QSes to RCU-sched and RCU-preempt when safe 2018-08-30 16:02:38 -07:00
tree.h rcu: Apply RCU-bh QSes to RCU-sched and RCU-preempt when safe 2018-08-30 16:02:38 -07:00
update.c rcu: Add comment to the last sleep in the rcu tasks loop 2018-07-12 15:39:21 -07:00