rcu: Use rcu_callback_t in call_rcu*() and friends
As we now have rcu_callback_t typedefs as the type of rcu callbacks, we
should use it in call_rcu*() and friends as the type of parameters. This
could save us a few lines of code and make it clear which function
requires an rcu callbacks rather than other callbacks as its argument.
Besides, this can also help cscope to generate a better database for
code reading.
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 7719295..51c8e7f 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -448,7 +448,7 @@
}
static void
-call_rcu_busted(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
+call_rcu_busted(struct rcu_head *head, rcu_callback_t func)
{
/* This is a deliberate bug for testing purposes only! */
func(head);
@@ -523,7 +523,7 @@
}
static void srcu_torture_call(struct rcu_head *head,
- void (*func)(struct rcu_head *head))
+ rcu_callback_t func)
{
call_srcu(srcu_ctlp, head, func);
}
diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c
index d3fcb2e..9e61225 100644
--- a/kernel/rcu/srcu.c
+++ b/kernel/rcu/srcu.c
@@ -387,7 +387,7 @@
* srcu_struct structure.
*/
void call_srcu(struct srcu_struct *sp, struct rcu_head *head,
- void (*func)(struct rcu_head *head))
+ rcu_callback_t func)
{
unsigned long flags;
diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
index d047105..944b1b4 100644
--- a/kernel/rcu/tiny.c
+++ b/kernel/rcu/tiny.c
@@ -44,7 +44,7 @@
static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp);
static void rcu_process_callbacks(struct softirq_action *unused);
static void __call_rcu(struct rcu_head *head,
- void (*func)(struct rcu_head *rcu),
+ rcu_callback_t func,
struct rcu_ctrlblk *rcp);
#include "tiny_plugin.h"
@@ -203,7 +203,7 @@
* Helper function for call_rcu() and call_rcu_bh().
*/
static void __call_rcu(struct rcu_head *head,
- void (*func)(struct rcu_head *rcu),
+ rcu_callback_t func,
struct rcu_ctrlblk *rcp)
{
unsigned long flags;
@@ -229,7 +229,7 @@
* period. But since we have but one CPU, that would be after any
* quiescent state.
*/
-void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
+void call_rcu_sched(struct rcu_head *head, rcu_callback_t func)
{
__call_rcu(head, func, &rcu_sched_ctrlblk);
}
@@ -239,7 +239,7 @@
* Post an RCU bottom-half callback to be invoked after any subsequent
* quiescent state.
*/
-void call_rcu_bh(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
+void call_rcu_bh(struct rcu_head *head, rcu_callback_t func)
{
__call_rcu(head, func, &rcu_bh_ctrlblk);
}
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 775d36c..b9d9e02 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3017,7 +3017,7 @@
* is expected to specify a CPU.
*/
static void
-__call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu),
+__call_rcu(struct rcu_head *head, rcu_callback_t func,
struct rcu_state *rsp, int cpu, bool lazy)
{
unsigned long flags;
@@ -3088,7 +3088,7 @@
/*
* Queue an RCU-sched callback for invocation after a grace period.
*/
-void call_rcu_sched(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
+void call_rcu_sched(struct rcu_head *head, rcu_callback_t func)
{
__call_rcu(head, func, &rcu_sched_state, -1, 0);
}
@@ -3097,7 +3097,7 @@
/*
* Queue an RCU callback for invocation after a quicker grace period.
*/
-void call_rcu_bh(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
+void call_rcu_bh(struct rcu_head *head, rcu_callback_t func)
{
__call_rcu(head, func, &rcu_bh_state, -1, 0);
}
@@ -3111,7 +3111,7 @@
* function may only be called from __kfree_rcu().
*/
void kfree_call_rcu(struct rcu_head *head,
- void (*func)(struct rcu_head *rcu))
+ rcu_callback_t func)
{
__call_rcu(head, func, rcu_state_p, -1, 1);
}
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 2e991f8..ad11529 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -584,7 +584,7 @@
static int rcu_print_task_stall(struct rcu_node *rnp);
static void rcu_preempt_check_blocked_tasks(struct rcu_node *rnp);
static void rcu_preempt_check_callbacks(void);
-void call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu));
+void call_rcu(struct rcu_head *head, rcu_callback_t func);
static void __init __rcu_init_preempt(void);
static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags);
static void rcu_preempt_boost_start_gp(struct rcu_node *rnp);
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index b2bf396..06116ae 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -500,7 +500,7 @@
/*
* Queue a preemptible-RCU callback for invocation after a grace period.
*/
-void call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu))
+void call_rcu(struct rcu_head *head, rcu_callback_t func)
{
__call_rcu(head, func, rcu_state_p, -1, 0);
}
diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
index 7a0b3bc..5f748c5 100644
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
@@ -534,7 +534,7 @@
* Post an RCU-tasks callback. First call must be from process context
* after the scheduler if fully operational.
*/
-void call_rcu_tasks(struct rcu_head *rhp, void (*func)(struct rcu_head *rhp))
+void call_rcu_tasks(struct rcu_head *rhp, rcu_callback_t func)
{
unsigned long flags;
bool needwake;