aboutsummaryrefslogtreecommitdiff
path: root/init
diff options
context:
space:
mode:
authorIngo Molnar <mingo@kernel.org>2013-02-04 19:06:34 +0100
committerIngo Molnar <mingo@kernel.org>2013-02-04 19:06:34 +0100
commit9228b5f24325a3863a4819300b471278ff14b48f (patch)
tree7108d5a0e1d0a717d80a7f77e45d29255321b2e6 /init
parent88b62b915b0b7e25870eb0604ed9a92ba4bfc9f7 (diff)
parent40393f525fe698e2b639cf1851ef0a40e7e158a8 (diff)
downloadvexpress-lsk-9228b5f24325a3863a4819300b471278ff14b48f.tar.gz
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/Kconfig12
1 files changed, 11 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig
index be8b7f55312..b023334df14 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