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| author | Clark Williams <clark.williams@gmail.com> | 2014-09-12 21:21:09 -0500 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-10-29 10:19:41 -0700 |
| commit | 21871d7eff2c96ae67e18e00adf59d56940e2fcc (patch) | |
| tree | e1d6d5c5b7e1f3b70715451c1a04f591293fb474 /Documentation/kernel-parameters.txt | |
| parent | e0775cefb5ede661dbdc0611d7bf3fcd4640005c (diff) | |
| download | lwn-21871d7eff2c96ae67e18e00adf59d56940e2fcc.tar.gz lwn-21871d7eff2c96ae67e18e00adf59d56940e2fcc.zip | |
rcu: Unify boost and kthread priorities
Rename CONFIG_RCU_BOOST_PRIO to CONFIG_RCU_KTHREAD_PRIO and use this
value for both the per-CPU kthreads (rcuc/N) and the rcu boosting
threads (rcub/n).
Also, create the module_parameter rcutree.kthread_prio to be used on
the kernel command line at boot to set a new value (rcutree.kthread_prio=N).
Signed-off-by: Clark Williams <clark.williams@gmail.com>
[ paulmck: Ported to rcu/dev, applied Paul Bolle and Peter Zijlstra feedback. ]
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 7dbe5ec9d9cd..6608520e9fa2 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -2922,6 +2922,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted. quiescent states. Units are jiffies, minimum value is one, and maximum value is HZ. + rcutree.kthread_prio= [KNL,BOOT] + Set the SCHED_FIFO priority of the RCU + per-CPU kthreads (rcuc/N). This value is also + used for the priority of the RCU boost threads + (rcub/N). Valid values are 1-99 and the default + is 1 (the least-favored priority). + rcutree.rcu_nocb_leader_stride= [KNL] Set the number of NOCB kthread groups, which defaults to the square root of the number of |