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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-12 22:12:07 +0900 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-12 22:12:07 +0900 |
| commit | 9d55ab71b735621a63c8923ba934d87879847cef (patch) | |
| tree | 53bc24c37b4366e2b372a59a501be934e404b143 /init | |
| parent | 4f1cd91497774488ed16119ec3f54b3daf1561de (diff) | |
| parent | c1f8d901d828da1df6d384780829952e7912aeba (diff) | |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU fixes from Ingo Molnar:
"This tree includes a shutdown/cpu-hotplug deadlock fix and a
documentation fix."
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rcu: Advise most users not to enable RCU user mode
rcu: Grace-period initialization excludes only RCU notifier
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index 4c93533da42..89e4cf672df 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -496,6 +496,12 @@ config RCU_USER_QS excluded from the global RCU state machine and thus doesn't to keep the timer tick on for RCU. + Unless you want to hack and help the development of the full + tickless feature, you shouldn't enable this option. It adds + unnecessary overhead. + + If unsure say N + config RCU_USER_QS_FORCE bool "Force userspace extended QS by default" depends on RCU_USER_QS @@ -504,6 +510,12 @@ config RCU_USER_QS_FORCE test this feature that treats userspace as an extended quiescent state until we have a real user like a full adaptive nohz option. + Unless you want to hack and help the development of the full + tickless feature, you shouldn't enable this option. It adds + unnecessary overhead. + + If unsure say N + config RCU_FANOUT int "Tree-based hierarchical RCU fanout value" range 2 64 if 64BIT |