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a35d13ec36
linux/kernel/rcu
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Ildar Ismagilov a35d13ec36 srcu: Prevent sdp->srcu_gp_seq_needed_exp counter wrap 
SRCU checks each srcu_data structure's grace-period number for counter
wrap four times per cycle by default.  This frequency guarantees that
normal comparisons will detect potential wrap.  However, the expedited
grace-period number is not checked.  The consquences are not too horrible
(a failure to expedite a grace period when requested), but it would be
good to avoid such things.  This commit therefore adds this check to
the expedited grace-period number.

Signed-off-by: Ildar Ismagilov <devix84@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2018-02-20 16:21:11 -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 srcu: Prevent sdp->srcu_gp_seq_needed_exp counter wrap 2018-02-20 16:21:11 -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