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| author | Ingo Molnar <mingo@kernel.org> | 2013-02-04 19:06:34 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-02-04 19:06:34 +0100 |
| commit | 9228b5f24325a3863a4819300b471278ff14b48f (patch) | |
| tree | 7108d5a0e1d0a717d80a7f77e45d29255321b2e6 /init | |
| parent | 88b62b915b0b7e25870eb0604ed9a92ba4bfc9f7 (diff) | |
| parent | 40393f525fe698e2b639cf1851ef0a40e7e158a8 (diff) | |
| download | lwn-9228b5f24325a3863a4819300b471278ff14b48f.tar.gz lwn-9228b5f24325a3863a4819300b471278ff14b48f.zip | |
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:
1. Changes to rcutorture and to RCU documentation. Posted to LKML at
https://lkml.org/lkml/2013/1/26/188.
2. Enhancements to uniprocessor handling in tiny RCU. Posted to LKML
at https://lkml.org/lkml/2013/1/27/2.
3. Tag RCU callbacks with grace-period number to simplify callback
advancement. Posted to LKML at https://lkml.org/lkml/2013/1/26/203.
4. Miscellaneous fixes. Posted to LKML at https://lkml.org/lkml/2013/1/26/204.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig index be8b7f55312d..b023334df142 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -453,7 +453,7 @@ config TREE_RCU config TREE_PREEMPT_RCU bool "Preemptible tree-based hierarchical RCU" - depends on PREEMPT && SMP + depends on PREEMPT help This option selects the RCU implementation that is designed for very large SMP systems with hundreds or @@ -461,6 +461,8 @@ config TREE_PREEMPT_RCU is also required. It also scales down nicely to smaller systems. + Select this option if you are unsure. + config TINY_RCU bool "UP-only small-memory-footprint RCU" depends on !PREEMPT && !SMP @@ -486,6 +488,14 @@ config PREEMPT_RCU This option enables preemptible-RCU code that is common between the TREE_PREEMPT_RCU and TINY_PREEMPT_RCU implementations. +config RCU_STALL_COMMON + def_bool ( TREE_RCU || TREE_PREEMPT_RCU || RCU_TRACE ) + help + This option enables RCU CPU stall code that is common between + the TINY and TREE variants of RCU. The purpose is to allow + the tiny variants to disable RCU CPU stall warnings, while + making these warnings mandatory for the tree variants. + config CONTEXT_TRACKING bool |