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rcu: Clean up straggling rcu_preempt_needs_cpu() name 

The recent updates to RCU_CPU_FAST_NO_HZ have an rcu_needs_cpu() that
does more than just check for callbacks, so get the name for
rcu_preempt_needs_cpu() consistent with that change, now calling it
rcu_preempt_cpu_has_callbacks().

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 2012-01-12 11:01:14 -08:00 committed by Paul E. McKenney
parent 1aa03f1188
commit 30fbcc90b0
3 changed files with 6 additions and 6 deletions
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2
kernel/rcutree.c
View File

@ -1958,7 +1958,7 @@ static int rcu_cpu_has_callbacks(int cpu)
/* RCU callbacks either ready or pending? */
return per_cpu(rcu_sched_data, cpu).nxtlist ||
per_cpu(rcu_bh_data, cpu).nxtlist ||
rcu_preempt_needs_cpu(cpu);
rcu_preempt_cpu_has_callbacks(cpu);
}
static DEFINE_PER_CPU(struct rcu_head, rcu_barrier_head) = {NULL};

2
kernel/rcutree.h
View File

@ -449,7 +449,7 @@ static void rcu_report_exp_rnp(struct rcu_state *rsp, struct rcu_node *rnp,
bool wake);
#endif /* #if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_TREE_PREEMPT_RCU) */
static int rcu_preempt_pending(int cpu);
static int rcu_preempt_needs_cpu(int cpu);
static int rcu_preempt_cpu_has_callbacks(int cpu);
static void __cpuinit rcu_preempt_init_percpu_data(int cpu);
static void rcu_preempt_cleanup_dying_cpu(void);
static void __init __rcu_init_preempt(void);

8
kernel/rcutree_plugin.h
View File

@ -887,9 +887,9 @@ static int rcu_preempt_pending(int cpu)
}
/*
* Does preemptible RCU need the CPU to stay out of dynticks mode?
* Does preemptible RCU have callbacks on this CPU?
*/
static int rcu_preempt_needs_cpu(int cpu)
static int rcu_preempt_cpu_has_callbacks(int cpu)
{
return !!per_cpu(rcu_preempt_data, cpu).nxtlist;
}
@ -1128,9 +1128,9 @@ static int rcu_preempt_pending(int cpu)
}
/*
* Because preemptible RCU does not exist, it never needs any CPU.
* Because preemptible RCU does not exist, it never has callbacks
*/
static int rcu_preempt_needs_cpu(int cpu)
static int rcu_preempt_cpu_has_callbacks(int cpu)
{
return 0;
}