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rcu: Make TINY_RCU also use softirq for RCU_BOOST=n

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This patch #ifdefs TINY_RCU kthreads out of the kernel unless RCU_BOOST=y,
thus eliminating context-switch overhead if RCU priority boosting has
not been configured.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney
2011-06-18 09:55:39 -07:00
committed by Paul E. McKenney
parent 385680a948
commit 965a002b4f
3 changed files with 97 additions and 91 deletions
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4
include/linux/rcutiny.h
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@@ -27,9 +27,13 @@
#include <linux/cache.h>
#ifdef CONFIG_RCU_BOOST
static inline void rcu_init(void)
{
}
#else /* #ifdef CONFIG_RCU_BOOST */
void rcu_init(void);
#endif /* #else #ifdef CONFIG_RCU_BOOST */
static inline void rcu_barrier_bh(void)
{