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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-07-21 15:52:40 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-08-20 02:18:04 +0200 |
| commit | 687d7a960aea46e016182c7ce346d62c4dbd0366 (patch) | |
| tree | 619c4ee6bee4c17fdc2f7c60a339295c6570b400 /init | |
| parent | rcu: allow RCU CPU stall warning messages to be controlled in /sys (diff) | |
| download | linux-687d7a960aea46e016182c7ce346d62c4dbd0366.tar.xz linux-687d7a960aea46e016182c7ce346d62c4dbd0366.zip | |
rcu: restrict TREE_RCU to SMP builds with !PREEMPT
Because both TINY_RCU and TREE_PREEMPT_RCU have been in mainline for
several releases, it is time to restrict the use of TREE_RCU to SMP
non-preemptible systems. This reduces testing/validation effort. This
commit is a first step towards driving the selection of RCU implementation
directly off of the SMP and PREEMPT configuration parameters.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index 2de5b1cbadd9..79ac52bef4ce 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -340,6 +340,7 @@ choice config TREE_RCU bool "Tree-based hierarchical RCU" + depends on !PREEMPT && SMP help This option selects the RCU implementation that is designed for very large SMP system with hundreds or |