Quelle  lock_events_list.h   Sprache: C

/* 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 LOCK_EVENT
#define LOCK_EVENT(name) LOCKEVENT_ ## name,
#endif

#ifdef CONFIG_QUEUED_SPINLOCKS
#ifdef CONFIG_PARAVIRT_SPINLOCKS
/*
 * Locking events for PV qspinlock.
 */
LOCK_EVENT(pv_hash_hops) /* Average # of hops per hashing operation */
LOCK_EVENT(pv_kick_unlock) /* # of vCPU kicks issued at unlock time   */
LOCK_EVENT(pv_kick_wake) /* # of vCPU kicks for pv_latency_wake    */
LOCK_EVENT(pv_latency_kick) /* Average latency (ns) of vCPU kick    */
LOCK_EVENT(pv_latency_wake) /* Average latency (ns) of kick-to-wakeup  */
LOCK_EVENT(pv_lock_stealing) /* # of lock stealing operations    */
LOCK_EVENT(pv_spurious_wakeup) /* # of spurious wakeups in non-head vCPUs */
LOCK_EVENT(pv_wait_again) /* # of wait's after queue head vCPU kick  */
LOCK_EVENT(pv_wait_early) /* # of early vCPU wait's    */
LOCK_EVENT(pv_wait_head) /* # of vCPU wait's at the queue head    */
LOCK_EVENT(pv_wait_node) /* # of vCPU wait's at non-head queue node */
#endif /* CONFIG_PARAVIRT_SPINLOCKS */

/*
 * Locking events for qspinlock
 *
 * Subtracting lock_use_node[234] from lock_slowpath will give you
 * lock_use_node1.
 */
LOCK_EVENT(lock_pending) /* # of locking ops via pending code      */
LOCK_EVENT(lock_slowpath) /* # of locking ops via MCS lock queue      */
LOCK_EVENT(lock_use_node2) /* # of locking ops that use 2nd percpu node */
LOCK_EVENT(lock_use_node3) /* # of locking ops that use 3rd percpu node */
LOCK_EVENT(lock_use_node4) /* # of locking ops that use 4th percpu node */
LOCK_EVENT(lock_no_node) /* # of locking ops w/o using percpu node    */
#endif /* CONFIG_QUEUED_SPINLOCKS */

/*
 * Locking events for Resilient Queued Spin Lock
 */
LOCK_EVENT(rqspinlock_lock_timeout) /* # of locking ops that timeout */

/*
 * Locking events for rwsem
 */
LOCK_EVENT(rwsem_sleep_reader) /* # of reader sleeps */
LOCK_EVENT(rwsem_sleep_writer) /* # of writer sleeps */
LOCK_EVENT(rwsem_wake_reader) /* # of reader wakeups */
LOCK_EVENT(rwsem_wake_writer) /* # of writer wakeups */
LOCK_EVENT(rwsem_opt_lock) /* # of opt-acquired write locks */
LOCK_EVENT(rwsem_opt_fail) /* # of failed optspins */
LOCK_EVENT(rwsem_opt_nospin) /* # of disabled optspins */
LOCK_EVENT(rwsem_rlock)  /* # of read locks acquired */
LOCK_EVENT(rwsem_rlock_steal) /* # of read locks by lock stealing */
LOCK_EVENT(rwsem_rlock_fast) /* # of fast read locks acquired */
LOCK_EVENT(rwsem_rlock_fail) /* # of failed read lock acquisitions */
LOCK_EVENT(rwsem_rlock_handoff) /* # of read lock handoffs */
LOCK_EVENT(rwsem_wlock)  /* # of write locks acquired */
LOCK_EVENT(rwsem_wlock_fail) /* # of failed write lock acquisitions */
LOCK_EVENT(rwsem_wlock_handoff) /* # of write lock handoffs */

/*
 * Locking events for rtlock_slowlock()
 */
LOCK_EVENT(rtlock_slowlock) /* # of rtlock_slowlock() calls */
LOCK_EVENT(rtlock_slow_acq1) /* # of locks acquired after wait_lock */
LOCK_EVENT(rtlock_slow_acq2) /* # of locks acquired in for loop */
LOCK_EVENT(rtlock_slow_sleep) /* # of sleeps */
LOCK_EVENT(rtlock_slow_wake) /* # of wakeup's */

/*
 * Locking events for rt_mutex_slowlock()
 */
LOCK_EVENT(rtmutex_slowlock) /* # of rt_mutex_slowlock() calls */
LOCK_EVENT(rtmutex_slow_block) /* # of rt_mutex_slowlock_block() calls */
LOCK_EVENT(rtmutex_slow_acq1) /* # of locks acquired after wait_lock */
LOCK_EVENT(rtmutex_slow_acq2) /* # of locks acquired at the end */
LOCK_EVENT(rtmutex_slow_acq3) /* # of locks acquired in *block() */
LOCK_EVENT(rtmutex_slow_sleep) /* # of sleeps */
LOCK_EVENT(rtmutex_slow_wake) /* # of wakeup's */
LOCK_EVENT(rtmutex_deadlock) /* # of rt_mutex_handle_deadlock()'s */

/*
 * Locking events for lockdep
 */
LOCK_EVENT(lockdep_acquire)
LOCK_EVENT(lockdep_lock)
LOCK_EVENT(lockdep_nocheck)