rcu: Move rcu_expedited and rcu_normal externs from rcupdate.h

The rcu_expedited and rcu_normal variables are used only by sysctl
and kernel/rcu/update.c, so it does not make sense to their extern
declarations in rcupdate.h.  This commit therefore moves these
extern declarations to update.c.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 7a206f0..6e7e930 100644 (file)
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -46,13 +46,6 @@
 #include <linux/ktime.h>
 #include <linux/irqflags.h>
 
-#include <asm/barrier.h>
-
-#ifndef CONFIG_TINY_RCU
-extern int rcu_expedited; /* for sysctl */
-extern int rcu_normal;    /* also for sysctl */
-#endif /* #ifndef CONFIG_TINY_RCU */
-
 #ifdef CONFIG_TINY_RCU
 /* Tiny RCU doesn't expedite, as its purpose in life is instead to be tiny. */
 static inline bool rcu_gp_is_normal(void)  /* Internal RCU use. */

diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
index 84dec2c..00e77c4 100644 (file)
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
@@ -62,7 +62,9 @@
 #define MODULE_PARAM_PREFIX "rcupdate."
 
 #ifndef CONFIG_TINY_RCU
+extern int rcu_expedited; /* from sysctl */
 module_param(rcu_expedited, int, 0);
+extern int rcu_normal; /* from sysctl */
 module_param(rcu_normal, int, 0);
 static int rcu_normal_after_boot;
 module_param(rcu_normal_after_boot, int, 0);