diff options
| author |   Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-11-17 19:27:16 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-02-17 16:03:09 -0800 |
| commit | ffa83fb565fbc397cbafb4b71fd1cce276d4c3b6 (patch) | |
| tree | c849b1ea3517d6853b7b4cd386a682187e314f09 /include/linux/rcutree.h | |
| parent | rcu: Optimize rcu_is_nocb_cpu() for RCU_NOCB_CPU_ALL (diff) | |
| download | linux-dev-ffa83fb565fbc397cbafb4b71fd1cce276d4c3b6.tar.xz linux-dev-ffa83fb565fbc397cbafb4b71fd1cce276d4c3b6.zip | |
rcu: Optimize rcu_needs_cpu() for RCU_NOCB_CPU_ALL
If CONFIG_RCU_NOCB_CPU_ALL=y, then rcu_needs_cpu() will always
return false, however, the current version nevertheless checks
for RCU callbacks. This commit therefore creates a static inline
implementation of rcu_needs_cpu() that unconditionally returns false
when CONFIG_RCU_NOCB_CPU_ALL=y.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'include/linux/rcutree.h')
| -rw-r--r-- | include/linux/rcutree.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h index 72137ee8c603..81198c84e268 100644 --- a/include/linux/rcutree.h +++ b/include/linux/rcutree.h @@ -31,7 +31,9 @@ #define __LINUX_RCUTREE_H void rcu_note_context_switch(int cpu); +#ifndef CONFIG_RCU_NOCB_CPU_ALL int rcu_needs_cpu(int cpu, unsigned long *delta_jiffies); +#endif /* #ifndef CONFIG_RCU_NOCB_CPU_ALL */ void rcu_cpu_stall_reset(void); /* |