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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-03 15:40:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-03 15:40:38 -0800
commit281422869942c19f05a08d4017c633d08d390938 (patch)
tree78e1fb9155e3e82697f96ce04e7b40e8f7c5147c /Documentation/kernel-parameters.txt
parentf5a8160c1e055c0fd8d16a5b3ac97c638365b0db (diff)
parentb33e18f61bd18227a456016a77b1a968f5bc1d65 (diff)
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU changes from Ingo Molnar: "The main changes in this cycle were: - Improvements to expedited grace periods (Paul E McKenney) - Performance improvements to and locktorture tests for percpu-rwsem (Oleg Nesterov, Paul E McKenney) - Torture-test changes (Paul E McKenney, Davidlohr Bueso) - Documentation updates (Paul E McKenney) - Miscellaneous fixes (Paul E McKenney, Boqun Feng, Oleg Nesterov, Patrick Marlier)" * 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits) fs/writeback, rcu: Don't use list_entry_rcu() for pointer offsetting in bdi_split_work_to_wbs() rcu: Better hotplug handling for synchronize_sched_expedited() rcu: Enable stall warnings for synchronize_rcu_expedited() rcu: Add tasks to expedited stall-warning messages rcu: Add online/offline info to expedited stall warning message rcu: Consolidate expedited CPU selection rcu: Prepare for consolidating expedited CPU selection cpu: Remove try_get_online_cpus() rcu: Stop excluding CPU hotplug in synchronize_sched_expedited() rcu: Stop silencing lockdep false positive for expedited grace periods rcu: Switch synchronize_sched_expedited() to IPI locktorture: Fix module unwind when bad torture_type specified torture: Forgive non-plural arguments rcutorture: Fix unused-function warning for torturing_tasks() rcutorture: Fix module unwind when bad torture_type specified rcu_sync: Cleanup the CONFIG_PROVE_RCU checks locking/percpu-rwsem: Clean up the lockdep annotations in percpu_down_read() locking/percpu-rwsem: Fix the comments outdated by rcu_sync locking/percpu-rwsem: Make use of the rcu_sync infrastructure locking/percpu-rwsem: Make percpu_free_rwsem() after kzalloc() safe ...
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt9
1 files changed, 6 insertions, 3 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 50fc09b623f6..046832ef14ce 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3089,9 +3089,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
cache-to-cache transfer latencies.
rcutree.rcu_fanout_leaf= [KNL]
- Increase the number of CPUs assigned to each
- leaf rcu_node structure. Useful for very large
- systems.
+ Change the number of CPUs assigned to each
+ leaf rcu_node structure. Useful for very
+ large systems, which will choose the value 64,
+ and for NUMA systems with large remote-access
+ latencies, which will choose a value aligned
+ with the appropriate hardware boundaries.
rcutree.jiffies_till_sched_qs= [KNL]
Set required age in jiffies for a

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