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rcu: Move lock_class_key to local scope 

Currently, the rcu_node_class[], rcu_fqs_class[], and rcu_exp_class[]
arrays needlessly pollute the global namespace within tree.c.  This
commit therefore converts them to static local variables within
rcu_init_one().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2015-09-26 14:51:24 -07:00
parent 6cf1008122
commit 3dc5dbe9a1
1 changed files with 3 additions and 4 deletions
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7
kernel/rcu/tree.c
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@ -68,10 +68,6 @@ MODULE_ALIAS("rcutree");
/* Data structures. */
static struct lock_class_key rcu_node_class[RCU_NUM_LVLS];
static struct lock_class_key rcu_fqs_class[RCU_NUM_LVLS];
static struct lock_class_key rcu_exp_class[RCU_NUM_LVLS];
/*
* In order to export the rcu_state name to the tracing tools, it
* needs to be added in the __tracepoint_string section.
@ -4365,6 +4361,9 @@ static void __init rcu_init_one(struct rcu_state *rsp,
static const char * const buf[] = RCU_NODE_NAME_INIT;
static const char * const fqs[] = RCU_FQS_NAME_INIT;
static const char * const exp[] = RCU_EXP_NAME_INIT;
static struct lock_class_key rcu_node_class[RCU_NUM_LVLS];
static struct lock_class_key rcu_fqs_class[RCU_NUM_LVLS];
static struct lock_class_key rcu_exp_class[RCU_NUM_LVLS];
static u8 fl_mask = 0x1;
int levelcnt[RCU_NUM_LVLS]; /* # nodes in each level. */