linux-stable/kernel/rcu
Paul E. McKenney 7e28c5af4e rcu: Eliminate ->rcu_qs_ctr from the rcu_dynticks structure
The ->rcu_qs_ctr counter was intended to allow providing a lightweight
report of a quiescent state to all RCU flavors.  But now that there is
only one flavor of RCU in any one running kernel, there is no point in
having this feature.  This commit therefore removes the ->rcu_qs_ctr
field from the rcu_dynticks structure and the ->rcu_qs_ctr_snap field
from the rcu_data structure.  This results in the "rqc" option to the
rcu_fqs trace event no longer being used, so this commit also removes the
"rqc" description from the header comment.

While in the neighborhood, this commit also causes the forward-progress
request .rcu_need_heavy_qs be set one jiffies_till_sched_qs interval
later in the grace period than the first setting of .rcu_urgent_qs.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2018-08-30 16:03:42 -07:00
..
Kconfig rcu: Clean up flavor-related definitions and comments in Kconfig 2018-08-30 16:03:32 -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.h rcu: Clean up flavor-related definitions and comments in rcu.h 2018-08-30 16:03:33 -07:00
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
rcuperf.c rcuperf: Remove the "rcu_bh" and "sched" torture types 2018-08-30 16:03:30 -07:00
rcutorture.c rcutorture: Dump reader protection sequence if failures or close calls 2018-08-30 16:03:40 -07:00
srcutiny.c sched/swait: Rename to exclusive 2018-06-20 11:35:56 +02:00
srcutree.c rcu: Clean up flavor-related definitions and comments in srcutree.h 2018-08-30 16:03:34 -07:00
sync.c doc: Fix various RCU docbook comment-header problems 2017-10-19 22:26:11 -04:00
tiny.c rcu: Motivate Tiny RCU forward progress 2018-08-30 16:03:41 -07:00
tree.c rcu: Eliminate ->rcu_qs_ctr from the rcu_dynticks structure 2018-08-30 16:03:42 -07:00
tree.h rcu: Eliminate ->rcu_qs_ctr from the rcu_dynticks structure 2018-08-30 16:03:42 -07:00
tree_exp.h rcu: Clean up flavor-related definitions and comments in tree_exp.h 2018-08-30 16:03:35 -07:00
tree_plugin.h rcu: Eliminate ->rcu_qs_ctr from the rcu_dynticks structure 2018-08-30 16:03:42 -07:00
update.c rcu: Clean up flavor-related definitions and comments in update.c 2018-08-30 16:03:36 -07:00