diff options
author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-03-16 21:53:52 +0300 |
---|---|---|
committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-05-27 22:58:01 +0300 |
commit | cd73ca21cd2bb3711b8d80ba74c90d37ef15fe4d (patch) | |
tree | af8915695057dad40b62a592a99d608de815d9d3 /kernel/rcu/tree_plugin.h | |
parent | 3382adbc1bb8c80ea512243acf6059564287620b (diff) | |
download | linux-cd73ca21cd2bb3711b8d80ba74c90d37ef15fe4d.tar.xz |
rcu: Force wakeup of rcu_gp_kthread at grace-period end
The rcu_gp_kthread_wake() refuses to do a wakeup unless at least
one of the ->gp_flags bits are set, which normally will not be the
case when the last quiescent state is reported. This results in
up to a 3-jiffy delay given default Kconfig settings. This commit
therefore has rcu_report_qs_rsp() set RCU_GP_FLAG_FQS before invoking
rcu_gp_kthread_wake() in order to force a more immediate wakeup at
grace-period end, thus reducing grace-period latencies.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu/tree_plugin.h')
0 files changed, 0 insertions, 0 deletions