linux-kernel - [PATCH 13/24] rcu: Rename rcu_invoke_kfree_callback/rcu_kfree

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Date:   Tue, 28 Apr 2020 22:58:52 +0200
From:   "Uladzislau Rezki (Sony)" <urezki@...il.com>
To:     LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        "Theodore Y . Ts'o" <tytso@....edu>,
        Matthew Wilcox <willy@...radead.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        RCU <rcu@...r.kernel.org>, Uladzislau Rezki <urezki@...il.com>,
        Oleksiy Avramchenko <oleksiy.avramchenko@...ymobile.com>
Subject: [PATCH 13/24] rcu: Rename rcu_invoke_kfree_callback/rcu_kfree_callback

Rename rcu_invoke_kfree_callback to rcu_invoke_kvfree_callback.
Do the same with second trace event, the rcu_kfree_callback,
becomes rcu_kvfree_callback. The reason is to be aligned with
kvfree notation.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@...il.com>
Reviewed-by: Joel Fernandes (Google) <joel@...lfernandes.org>
Signed-off-by: Joel Fernandes (Google) <joel@...lfernandes.org>
---
 include/trace/events/rcu.h | 8 ++++----
 kernel/rcu/tiny.c          | 2 +-
 kernel/rcu/tree.c          | 6 +++---
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h
index f9a7811148e2..0ee93d0b1daa 100644
--- a/include/trace/events/rcu.h
+++ b/include/trace/events/rcu.h
@@ -506,13 +506,13 @@ TRACE_EVENT_RCU(rcu_callback,
 
 /*
  * Tracepoint for the registration of a single RCU callback of the special
- * kfree() form.  The first argument is the RCU type, the second argument
+ * kvfree() form.  The first argument is the RCU type, the second argument
  * is a pointer to the RCU callback, the third argument is the offset
  * of the callback within the enclosing RCU-protected data structure,
  * the fourth argument is the number of lazy callbacks queued, and the
  * fifth argument is the total number of callbacks queued.
  */
-TRACE_EVENT_RCU(rcu_kfree_callback,
+TRACE_EVENT_RCU(rcu_kvfree_callback,
 
 	TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset,
 		 long qlen),
@@ -596,12 +596,12 @@ TRACE_EVENT_RCU(rcu_invoke_callback,
 
 /*
  * Tracepoint for the invocation of a single RCU callback of the special
- * kfree() form.  The first argument is the RCU flavor, the second
+ * kvfree() form.  The first argument is the RCU flavor, the second
  * argument is a pointer to the RCU callback, and the third argument
  * is the offset of the callback within the enclosing RCU-protected
  * data structure.
  */
-TRACE_EVENT_RCU(rcu_invoke_kfree_callback,
+TRACE_EVENT_RCU(rcu_invoke_kvfree_callback,
 
 	TP_PROTO(const char *rcuname, struct rcu_head *rhp, unsigned long offset),
 
diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
index 4b99f7b88bee..3dd8e6e207b0 100644
--- a/kernel/rcu/tiny.c
+++ b/kernel/rcu/tiny.c
@@ -86,7 +86,7 @@ static inline bool rcu_reclaim_tiny(struct rcu_head *head)
 
 	rcu_lock_acquire(&rcu_callback_map);
 	if (__is_kfree_rcu_offset(offset)) {
-		trace_rcu_invoke_kfree_callback("", head, offset);
+		trace_rcu_invoke_kvfree_callback("", head, offset);
 		kvfree((void *)head - offset);
 		rcu_lock_release(&rcu_callback_map);
 		return true;
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 7983926af95b..821de8149928 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -2794,7 +2794,7 @@ __call_rcu(struct rcu_head *head, rcu_callback_t func)
 	// If no-CBs CPU gets here, rcu_nocb_try_bypass() acquired ->nocb_lock.
 	rcu_segcblist_enqueue(&rdp->cblist, head);
 	if (__is_kfree_rcu_offset((unsigned long)func))
-		trace_rcu_kfree_callback(rcu_state.name, head,
+		trace_rcu_kvfree_callback(rcu_state.name, head,
 					 (unsigned long)func,
 					 rcu_segcblist_n_cbs(&rdp->cblist));
 	else
@@ -3048,7 +3048,7 @@ static void kfree_rcu_work(struct work_struct *work)
 
 		rcu_lock_acquire(&rcu_callback_map);
 		for (i = 0; i < bvhead->nr_records; i++) {
-			trace_rcu_invoke_kfree_callback(rcu_state.name,
+			trace_rcu_invoke_kvfree_callback(rcu_state.name,
 				(struct rcu_head *) bvhead->records[i], 0);
 			vfree(bvhead->records[i]);
 		}
@@ -3077,7 +3077,7 @@ static void kfree_rcu_work(struct work_struct *work)
 		next = head->next;
 		debug_rcu_head_unqueue((struct rcu_head *)ptr);
 		rcu_lock_acquire(&rcu_callback_map);
-		trace_rcu_invoke_kfree_callback(rcu_state.name, head, offset);
+		trace_rcu_invoke_kvfree_callback(rcu_state.name, head, offset);
 
 		if (!WARN_ON_ONCE(!__is_kfree_rcu_offset(offset)))
 			kvfree(ptr);
-- 
2.20.1