/* SPDX-License-Identifier: GPL-2.0 */
|
/*
|
* This program is free software; you can redistribute it and/or modify
|
* it under the terms of the GNU General Public License as published by
|
* the Free Software Foundation; either version 2 of the License, or
|
* (at your option) any later version.
|
*
|
* This program is distributed in the hope that it will be useful,
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
* GNU General Public License for more details.
|
*
|
* Authors: Waiman Long <longman@redhat.com>
|
*/
|
|
#ifndef __LOCKING_LOCK_EVENTS_H
|
#define __LOCKING_LOCK_EVENTS_H
|
|
enum lock_events {
|
|
#include "lock_events_list.h"
|
|
lockevent_num, /* Total number of lock event counts */
|
LOCKEVENT_reset_cnts = lockevent_num,
|
};
|
|
#ifdef CONFIG_LOCK_EVENT_COUNTS
|
/*
|
* Per-cpu counters
|
*/
|
DECLARE_PER_CPU(unsigned long, lockevents[lockevent_num]);
|
|
/*
|
* Increment the statistical counters. use raw_cpu_inc() because of lower
|
* overhead and we don't care if we loose the occasional update.
|
*/
|
static inline void __lockevent_inc(enum lock_events event, bool cond)
|
{
|
if (cond)
|
raw_cpu_inc(lockevents[event]);
|
}
|
|
#define lockevent_inc(ev) __lockevent_inc(LOCKEVENT_ ##ev, true)
|
#define lockevent_cond_inc(ev, c) __lockevent_inc(LOCKEVENT_ ##ev, c)
|
|
static inline void __lockevent_add(enum lock_events event, int inc)
|
{
|
raw_cpu_add(lockevents[event], inc);
|
}
|
|
#define lockevent_add(ev, c) __lockevent_add(LOCKEVENT_ ##ev, c)
|
|
#else /* CONFIG_LOCK_EVENT_COUNTS */
|
|
#define lockevent_inc(ev)
|
#define lockevent_add(ev, c)
|
#define lockevent_cond_inc(ev, c)
|
|
#endif /* CONFIG_LOCK_EVENT_COUNTS */
|
#endif /* __LOCKING_LOCK_EVENTS_H */
|
