summaryrefslogtreecommitdiff
path: root/init
diff options
context:
space:
mode:
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-03-25 09:59:38 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2017-04-18 11:38:22 -0700
commitd8be81735aa89413b333de488251f0e64e2be591 (patch)
tree3c7743a43efeb407aa51b2a8c699de19a9e90500 /init
parentdde8da6cffe73dab81aca3855e717e40db35178c (diff)
downloadlinux-sh-d8be81735aa89413b333de488251f0e64e2be591.tar.gz
srcu: Create a tiny SRCU
In response to automated complaints about modifications to SRCU increasing its size, this commit creates a tiny SRCU that is used in SMP=n && PREEMPT=n builds. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig12
1 files changed, 12 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index a92f27da4a27..d269f2ca17b8 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -526,6 +526,18 @@ config SRCU
permits arbitrary sleeping or blocking within RCU read-side critical
sections.
+config TINY_SRCU
+ bool
+ default y if TINY_RCU
+ help
+ This option selects the single-CPU non-preemptible version of SRCU.
+
+config TREE_SRCU
+ bool
+ default y if !TINY_RCU
+ help
+ This option selects the full-fledged version of SRCU.
+
config TASKS_RCU
bool
default n