rcu: Variable name changed in tree_plugin.h and used in tree.c
The variable and struct both having the name "rcu_state" confuses
sparse in some situations, so this commit changes the variable to
"rcu_state_p" in order to avoid this confusion. This also makes
things easier for human readers.
Signed-off-by: Uma Sharma <uma.sharma523@gmail.com>
[ paulmck: Changed the declaration and several additional uses. ]
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 3bbe489..3e3f13e 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -101,7 +101,7 @@
RCU_STATE_INITIALIZER(rcu_sched, 's', call_rcu_sched);
RCU_STATE_INITIALIZER(rcu_bh, 'b', call_rcu_bh);
-static struct rcu_state *rcu_state;
+static struct rcu_state *rcu_state_p;
LIST_HEAD(rcu_struct_flavors);
/* Increase (but not decrease) the CONFIG_RCU_FANOUT_LEAF at boot time. */
@@ -275,7 +275,7 @@
*/
void rcu_force_quiescent_state(void)
{
- force_quiescent_state(rcu_state);
+ force_quiescent_state(rcu_state_p);
}
EXPORT_SYMBOL_GPL(rcu_force_quiescent_state);
@@ -327,7 +327,7 @@
switch (test_type) {
case RCU_FLAVOR:
- rsp = rcu_state;
+ rsp = rcu_state_p;
break;
case RCU_BH_FLAVOR:
rsp = &rcu_bh_state;
@@ -910,7 +910,7 @@
* we will beat on the first one until it gets unstuck, then move
* to the next. Only do this for the primary flavor of RCU.
*/
- if (rdp->rsp == rcu_state &&
+ if (rdp->rsp == rcu_state_p &&
ULONG_CMP_GE(jiffies, rdp->rsp->jiffies_resched)) {
rdp->rsp->jiffies_resched += 5;
resched_cpu(rdp->cpu);
@@ -2660,7 +2660,7 @@
void kfree_call_rcu(struct rcu_head *head,
void (*func)(struct rcu_head *rcu))
{
- __call_rcu(head, func, rcu_state, -1, 1);
+ __call_rcu(head, func, rcu_state_p, -1, 1);
}
EXPORT_SYMBOL_GPL(kfree_call_rcu);
@@ -2787,7 +2787,7 @@
* time-consuming work between get_state_synchronize_rcu()
* and cond_synchronize_rcu().
*/
- return smp_load_acquire(&rcu_state->gpnum);
+ return smp_load_acquire(&rcu_state_p->gpnum);
}
EXPORT_SYMBOL_GPL(get_state_synchronize_rcu);
@@ -2813,7 +2813,7 @@
* Ensure that this load happens before any RCU-destructive
* actions the caller might carry out after we return.
*/
- newstate = smp_load_acquire(&rcu_state->completed);
+ newstate = smp_load_acquire(&rcu_state_p->completed);
if (ULONG_CMP_GE(oldstate, newstate))
synchronize_rcu();
}
@@ -3354,7 +3354,7 @@
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;
- struct rcu_data *rdp = per_cpu_ptr(rcu_state->rda, cpu);
+ struct rcu_data *rdp = per_cpu_ptr(rcu_state_p->rda, cpu);
struct rcu_node *rnp = rdp->mynode;
struct rcu_state *rsp;
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 2e579c3..29977ae 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -116,7 +116,7 @@
#ifdef CONFIG_TREE_PREEMPT_RCU
RCU_STATE_INITIALIZER(rcu_preempt, 'p', call_rcu);
-static struct rcu_state *rcu_state = &rcu_preempt_state;
+static struct rcu_state *rcu_state_p = &rcu_preempt_state;
static int rcu_preempted_readers_exp(struct rcu_node *rnp);
@@ -947,7 +947,7 @@
#else /* #ifdef CONFIG_TREE_PREEMPT_RCU */
-static struct rcu_state *rcu_state = &rcu_sched_state;
+static struct rcu_state *rcu_state_p = &rcu_sched_state;
/*
* Tell them what RCU they are running.
@@ -1468,11 +1468,11 @@
for_each_possible_cpu(cpu)
per_cpu(rcu_cpu_has_work, cpu) = 0;
BUG_ON(smpboot_register_percpu_thread(&rcu_cpu_thread_spec));
- rnp = rcu_get_root(rcu_state);
- (void)rcu_spawn_one_boost_kthread(rcu_state, rnp);
+ rnp = rcu_get_root(rcu_state_p);
+ (void)rcu_spawn_one_boost_kthread(rcu_state_p, rnp);
if (NUM_RCU_NODES > 1) {
- rcu_for_each_leaf_node(rcu_state, rnp)
- (void)rcu_spawn_one_boost_kthread(rcu_state, rnp);
+ rcu_for_each_leaf_node(rcu_state_p, rnp)
+ (void)rcu_spawn_one_boost_kthread(rcu_state_p, rnp);
}
return 0;
}
@@ -1480,12 +1480,12 @@
static void rcu_prepare_kthreads(int cpu)
{
- struct rcu_data *rdp = per_cpu_ptr(rcu_state->rda, cpu);
+ struct rcu_data *rdp = per_cpu_ptr(rcu_state_p->rda, cpu);
struct rcu_node *rnp = rdp->mynode;
/* Fire up the incoming CPU's kthread and leaf rcu_node kthread. */
if (rcu_scheduler_fully_active)
- (void)rcu_spawn_one_boost_kthread(rcu_state, rnp);
+ (void)rcu_spawn_one_boost_kthread(rcu_state_p, rnp);
}
#else /* #ifdef CONFIG_RCU_BOOST */