[tip: perf/core] task_work: s/task_work_cancel()/task_work_cancel_func()/

[tip-bot2 for Frederic Weisbecker]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     68cbd415dd4b9c5b9df69f0f091879e56bf5907a
Gitweb:        https://git.kernel.org/tip/68cbd415dd4b9c5b9df69f0f091879e56bf5907a
Author:        Frederic Weisbecker <frederic@xxxxxxxxxx>
AuthorDate:    Fri, 21 Jun 2024 11:15:58 +02:00
Committer:     Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Tue, 09 Jul 2024 13:26:31 +02:00

task_work: s/task_work_cancel()/task_work_cancel_func()/

A proper task_work_cancel() API that actually cancels a callback and not
*any* callback pointing to a given function is going to be needed for
perf events event freeing. Do the appropriate rename to prepare for
that.

Signed-off-by: Frederic Weisbecker <frederic@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20240621091601.18227-2-frederic@xxxxxxxxxx
---
 include/linux/task_work.h |  2 +-
 kernel/irq/manage.c       |  2 +-
 kernel/task_work.c        | 10 +++++-----
 security/keys/keyctl.c    |  2 +-
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/linux/task_work.h b/include/linux/task_work.h
index 795ef5a..23ab01a 100644
--- a/include/linux/task_work.h
+++ b/include/linux/task_work.h
@@ -30,7 +30,7 @@ int task_work_add(struct task_struct *task, struct callback_head *twork,
 
 struct callback_head *task_work_cancel_match(struct task_struct *task,
 	bool (*match)(struct callback_head *, void *data), void *data);
-struct callback_head *task_work_cancel(struct task_struct *, task_work_func_t);
+struct callback_head *task_work_cancel_func(struct task_struct *, task_work_func_t);
 void task_work_run(void);
 
 static inline void exit_task_work(struct task_struct *task)
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 71b0fc2..dd53298 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1337,7 +1337,7 @@ static int irq_thread(void *data)
 	 * synchronize_hardirq(). So neither IRQTF_RUNTHREAD nor the
 	 * oneshot mask bit can be set.
 	 */
-	task_work_cancel(current, irq_thread_dtor);
+	task_work_cancel_func(current, irq_thread_dtor);
 	return 0;
 }
 
diff --git a/kernel/task_work.c b/kernel/task_work.c
index 95a7e1b..54ac240 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -120,9 +120,9 @@ static bool task_work_func_match(struct callback_head *cb, void *data)
 }
 
 /**
- * task_work_cancel - cancel a pending work added by task_work_add()
- * @task: the task which should execute the work
- * @func: identifies the work to remove
+ * task_work_cancel_func - cancel a pending work matching a function added by task_work_add()
+ * @task: the task which should execute the func's work
+ * @func: identifies the func to match with a work to remove
  *
  * Find the last queued pending work with ->func == @func and remove
  * it from queue.
@@ -131,7 +131,7 @@ static bool task_work_func_match(struct callback_head *cb, void *data)
  * The found work or NULL if not found.
  */
 struct callback_head *
-task_work_cancel(struct task_struct *task, task_work_func_t func)
+task_work_cancel_func(struct task_struct *task, task_work_func_t func)
 {
 	return task_work_cancel_match(task, task_work_func_match, func);
 }
@@ -168,7 +168,7 @@ void task_work_run(void)
 		if (!work)
 			break;
 		/*
-		 * Synchronize with task_work_cancel(). It can not remove
+		 * Synchronize with task_work_cancel_match(). It can not remove
 		 * the first entry == work, cmpxchg(task_works) must fail.
 		 * But it can remove another entry from the ->next list.
 		 */
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 4bc3e93..ab927a1 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -1694,7 +1694,7 @@ long keyctl_session_to_parent(void)
 		goto unlock;
 
 	/* cancel an already pending keyring replacement */
-	oldwork = task_work_cancel(parent, key_change_session_keyring);
+	oldwork = task_work_cancel_func(parent, key_change_session_keyring);
 
 	/* the replacement session keyring is applied just prior to userspace
 	 * restarting */