42b61a3a14
commit f409530e4db9dd11b88cb7703c97c8f326ff6566 upstream. Re-introduce task_work_cancel(), this time to cancel an actual callback and not *any* callback pointing to a given function. This is going to be needed for perf events event freeing. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240621091601.18227-3-frederic@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
36 lines
934 B
C
Executable file
36 lines
934 B
C
Executable file
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_TASK_WORK_H
|
|
#define _LINUX_TASK_WORK_H
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/sched.h>
|
|
|
|
typedef void (*task_work_func_t)(struct callback_head *);
|
|
|
|
static inline void
|
|
init_task_work(struct callback_head *twork, task_work_func_t func)
|
|
{
|
|
twork->func = func;
|
|
}
|
|
|
|
enum task_work_notify_mode {
|
|
TWA_NONE,
|
|
TWA_RESUME,
|
|
TWA_SIGNAL,
|
|
};
|
|
|
|
int task_work_add(struct task_struct *task, struct callback_head *twork,
|
|
enum task_work_notify_mode mode);
|
|
|
|
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_func(struct task_struct *, task_work_func_t);
|
|
bool task_work_cancel(struct task_struct *task, struct callback_head *cb);
|
|
void task_work_run(void);
|
|
|
|
static inline void exit_task_work(struct task_struct *task)
|
|
{
|
|
task_work_run();
|
|
}
|
|
|
|
#endif /* _LINUX_TASK_WORK_H */
|