[PATCH 2/2] rcu: Use call_rcu_func_to to replace explicit type equivalents

[Boqun Feng]

We have call_rcu_func_t for a quite while, but we still use explicit
function pointer type equivalents in some places, this patch replace
these equivalent types with call_rcu_func_t to gain better readability.

Signed-off-by: Boqun Feng <boqun.feng@xxxxxxxxx>
---
 kernel/rcu/rcutorture.c | 2 +-
 kernel/rcu/tree.h       | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 51c8e7f..f9ec6cb 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -252,7 +252,7 @@ struct rcu_torture_ops {
 	void (*exp_sync)(void);
 	unsigned long (*get_state)(void);
 	void (*cond_sync)(unsigned long oldstate);
-	void (*call)(struct rcu_head *head, void (*func)(struct rcu_head *rcu));
+	call_rcu_func_t call;
 	void (*cb_barrier)(void);
 	void (*fqs)(void);
 	void (*stats)(void);
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index ad11529..0c33c82 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -464,8 +464,7 @@ struct rcu_state {
 						/*  shut bogus gcc warning) */
 	u8 flavor_mask;				/* bit in flavor mask. */
 	struct rcu_data __percpu *rda;		/* pointer of percu rcu_data. */
-	void (*call)(struct rcu_head *head,	/* call_rcu() flavor. */
-		     void (*func)(struct rcu_head *head));
+	call_rcu_func_t call;			/* call_rcu() flavor. */
 
 	/* The following fields are guarded by the root rcu_node's lock. */
 
-- 
2.4.6

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