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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-04-21 11:15:30 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2015-05-27 12:59:31 -0700
commit51952bc633064311410b041fad38da1614f4539e (patch)
tree43f42f45e43ccb22af1ad10a88573675c01681a9 /include/linux/rcutiny.h
parent7d0ae8086b828311250c6afdf800b568ac9bd693 (diff)
rcu: Further shrink Tiny RCU by making empty functions static inlines
The Tiny RCU counterparts to rcu_idle_enter(), rcu_idle_exit(), rcu_irq_enter(), and rcu_irq_exit() are empty functions, but each has EXPORT_SYMBOL_GPL(), which needlessly consumes extra memory, especially in kernels built with module support. This commit therefore moves these functions to static inlines in rcutiny.h, removing the need for exports. This won't affect the size of the tiniest kernels, which are likely built without module support, but might help semi-tiny kernels that might include module support. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'include/linux/rcutiny.h')
-rw-r--r--include/linux/rcutiny.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h
index 937edaeb150d..3df6c1ec4e25 100644
--- a/include/linux/rcutiny.h
+++ b/include/linux/rcutiny.h
@@ -159,6 +159,22 @@ static inline void rcu_cpu_stall_reset(void)
{
}
+static inline void rcu_idle_enter(void)
+{
+}
+
+static inline void rcu_idle_exit(void)
+{
+}
+
+static inline void rcu_irq_enter(void)
+{
+}
+
+static inline void rcu_irq_exit(void)
+{
+}
+
static inline void exit_rcu(void)
{
}