linux/kernel/rcu
Paul E. McKenney 6308f34775 rcu: Remove SRCU throttling
The code in srcu_gp_end() inserts a delay every 0x3ff grace periods in
order to prevent SRCU grace-period work from consuming an entire CPU
when there is a long sequence of expedited SRCU grace-period requests.
However, all of SRCU's grace-period work is carried out in workqueues,
which are in turn within kthreads, which are automatically throttled as
needed by the scheduler.  In particular, if there is plenty of idle time,
there is no point in throttling.

This commit therefore removes the expedited SRCU grace-period throttling.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2018-02-20 16:21:13 -08:00
..
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/segcblist: Include rcupdate.h 2017-10-19 12:13:36 -07:00
rcu_segcblist.h rcu: Remove unused RCU list functions 2017-07-25 13:04:49 -07:00
rcu.h rcu: Shrink ->dynticks_{nmi_,}nesting from long long to long 2017-11-28 15:51:18 -08:00
rcuperf.c torture: Eliminate torture_runnable and perf_runnable 2017-12-11 09:18:29 -08:00
rcutorture.c torture: Eliminate torture_runnable and perf_runnable 2017-12-11 09:18:29 -08:00
srcutiny.c srcu: Move rcu_scheduler_starting() from Tiny RCU to Tiny SRCU 2017-07-24 16:03:22 -07:00
srcutree.c rcu: Remove SRCU throttling 2018-02-20 16:21:13 -08:00
sync.c doc: Fix various RCU docbook comment-header problems 2017-10-19 22:26:11 -04:00
tiny.c srcu: Move rcu_scheduler_starting() from Tiny RCU to Tiny SRCU 2017-07-24 16:03:22 -07:00
tree_exp.h rcu: Make expedited GPs correctly handle hardware CPU insertion 2017-07-25 13:04:45 -07:00
tree_plugin.h Merge branches 'cond_resched.2017.12.04a', 'dyntick.2017.11.28a', 'fixes.2017.12.11a', 'srbd.2017.12.05a' and 'torture.2017.12.11a' into HEAD 2017-12-11 09:21:58 -08:00
tree.c Merge branches 'cond_resched.2017.12.04a', 'dyntick.2017.11.28a', 'fixes.2017.12.11a', 'srbd.2017.12.05a' and 'torture.2017.12.11a' into HEAD 2017-12-11 09:21:58 -08:00
tree.h rcu: Shrink ->dynticks_{nmi_,}nesting from long long to long 2017-11-28 15:51:18 -08:00
update.c rcu: Export init_rcu_head() and destroy_rcu_head() to GPL modules 2017-12-07 19:51:49 -05:00