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authorIngo Molnar <mingo@kernel.org>2014-07-16 13:49:15 +0200
committerIngo Molnar <mingo@kernel.org>2014-07-17 11:34:01 +0200
commit01c9db827146ce321562a992a5dbc1a49b1a99ce (patch)
tree2014c68991343e5b7ddf0408c2527ff08038e08d /Documentation/kernel-parameters.txt
parent1795cd9b3a91d4b5473c97f491d63892442212ab (diff)
parent187497fa5e9e9383820d33e48b87f8200a747c2a (diff)
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Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney: * Update RCU documentation. * Miscellaneous fixes. * Maintainership changes. * Torture-test updates. * Callback-offloading changes. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt13
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diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index c1b9aa8c5a52..6439c9380198 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2790,6 +2790,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
leaf rcu_node structure. Useful for very large
systems.
+ rcutree.jiffies_till_sched_qs= [KNL]
+ Set required age in jiffies for a
+ given grace period before RCU starts
+ soliciting quiescent-state help from
+ rcu_note_context_switch().
+
rcutree.jiffies_till_first_fqs= [KNL]
Set delay from grace-period initialization to
first attempt to force quiescent states.
@@ -2801,6 +2807,13 @@ 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.rcu_nocb_leader_stride= [KNL]
+ Set the number of NOCB kthread groups, which
+ defaults to the square root of the number of
+ CPUs. Larger numbers reduces the wakeup overhead
+ on the per-CPU grace-period kthreads, but increases
+ that same overhead on each group's leader.
+
rcutree.qhimark= [KNL]
Set threshold of queued RCU callbacks beyond which
batch limiting is disabled.