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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465/* 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) do { (void)(c); } while (0)#define lockevent_cond_inc(ev, c) do { (void)(c); } while (0)
#endif /* CONFIG_LOCK_EVENT_COUNTS */
ssize_t lockevent_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos);
#endif /* __LOCKING_LOCK_EVENTS_H */