lock_events_list.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2/*
  3 * This program is free software; you can redistribute it and/or modify
  4 * it under the terms of the GNU General Public License as published by
  5 * the Free Software Foundation; either version 2 of the License, or
  6 * (at your option) any later version.
  7 *
  8 * This program is distributed in the hope that it will be useful,
  9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 11 * GNU General Public License for more details.
 12 *
 13 * Authors: Waiman Long <longman@redhat.com>
 14 */
 15
 16#ifndef LOCK_EVENT
 17#define LOCK_EVENT(name)	LOCKEVENT_ ## name,
 18#endif
 19
 20#ifdef CONFIG_QUEUED_SPINLOCKS
 21#ifdef CONFIG_PARAVIRT_SPINLOCKS
 22/*
 23 * Locking events for PV qspinlock.
 24 */
 25LOCK_EVENT(pv_hash_hops)	/* Average # of hops per hashing operation */
 26LOCK_EVENT(pv_kick_unlock)	/* # of vCPU kicks issued at unlock time   */
 27LOCK_EVENT(pv_kick_wake)	/* # of vCPU kicks for pv_latency_wake	   */
 28LOCK_EVENT(pv_latency_kick)	/* Average latency (ns) of vCPU kick	   */
 29LOCK_EVENT(pv_latency_wake)	/* Average latency (ns) of kick-to-wakeup  */
 30LOCK_EVENT(pv_lock_stealing)	/* # of lock stealing operations	   */
 31LOCK_EVENT(pv_spurious_wakeup)	/* # of spurious wakeups in non-head vCPUs */
 32LOCK_EVENT(pv_wait_again)	/* # of wait's after queue head vCPU kick  */
 33LOCK_EVENT(pv_wait_early)	/* # of early vCPU wait's		   */
 34LOCK_EVENT(pv_wait_head)	/* # of vCPU wait's at the queue head	   */
 35LOCK_EVENT(pv_wait_node)	/* # of vCPU wait's at non-head queue node */
 36#endif /* CONFIG_PARAVIRT_SPINLOCKS */
 37
 38/*
 39 * Locking events for qspinlock
 40 *
 41 * Subtracting lock_use_node[234] from lock_slowpath will give you
 42 * lock_use_node1.
 43 */
 44LOCK_EVENT(lock_pending)	/* # of locking ops via pending code	     */
 45LOCK_EVENT(lock_slowpath)	/* # of locking ops via MCS lock queue	     */
 46LOCK_EVENT(lock_use_node2)	/* # of locking ops that use 2nd percpu node */
 47LOCK_EVENT(lock_use_node3)	/* # of locking ops that use 3rd percpu node */
 48LOCK_EVENT(lock_use_node4)	/* # of locking ops that use 4th percpu node */
 49LOCK_EVENT(lock_no_node)	/* # of locking ops w/o using percpu node    */
 50#endif /* CONFIG_QUEUED_SPINLOCKS */
 51
 52/*
 53 * Locking events for Resilient Queued Spin Lock
 54 */
 55LOCK_EVENT(rqspinlock_lock_timeout)	/* # of locking ops that timeout	*/
 56
 57/*
 58 * Locking events for rwsem
 59 */
 60LOCK_EVENT(rwsem_sleep_reader)	/* # of reader sleeps			*/
 61LOCK_EVENT(rwsem_sleep_writer)	/* # of writer sleeps			*/
 62LOCK_EVENT(rwsem_wake_reader)	/* # of reader wakeups			*/
 63LOCK_EVENT(rwsem_wake_writer)	/* # of writer wakeups			*/
 64LOCK_EVENT(rwsem_opt_lock)	/* # of opt-acquired write locks	*/
 65LOCK_EVENT(rwsem_opt_fail)	/* # of failed optspins			*/
 66LOCK_EVENT(rwsem_opt_nospin)	/* # of disabled optspins		*/
 67LOCK_EVENT(rwsem_rlock)		/* # of read locks acquired		*/
 68LOCK_EVENT(rwsem_rlock_steal)	/* # of read locks by lock stealing	*/
 69LOCK_EVENT(rwsem_rlock_fast)	/* # of fast read locks acquired	*/
 70LOCK_EVENT(rwsem_rlock_fail)	/* # of failed read lock acquisitions	*/
 71LOCK_EVENT(rwsem_rlock_handoff)	/* # of read lock handoffs		*/
 72LOCK_EVENT(rwsem_wlock)		/* # of write locks acquired		*/
 73LOCK_EVENT(rwsem_wlock_fail)	/* # of failed write lock acquisitions	*/
 74LOCK_EVENT(rwsem_wlock_handoff)	/* # of write lock handoffs		*/
 75
 76/*
 77 * Locking events for rtlock_slowlock()
 78 */
 79LOCK_EVENT(rtlock_slowlock)	/* # of rtlock_slowlock() calls		*/
 80LOCK_EVENT(rtlock_slow_acq1)	/* # of locks acquired after wait_lock	*/
 81LOCK_EVENT(rtlock_slow_acq2)	/* # of locks acquired in for loop	*/
 82LOCK_EVENT(rtlock_slow_sleep)	/* # of sleeps				*/
 83LOCK_EVENT(rtlock_slow_wake)	/* # of wakeup's			*/
 84
 85/*
 86 * Locking events for rt_mutex_slowlock()
 87 */
 88LOCK_EVENT(rtmutex_slowlock)	/* # of rt_mutex_slowlock() calls	*/
 89LOCK_EVENT(rtmutex_slow_block)	/* # of rt_mutex_slowlock_block() calls	*/
 90LOCK_EVENT(rtmutex_slow_acq1)	/* # of locks acquired after wait_lock	*/
 91LOCK_EVENT(rtmutex_slow_acq2)	/* # of locks acquired at the end	*/
 92LOCK_EVENT(rtmutex_slow_acq3)	/* # of locks acquired in *block()	*/
 93LOCK_EVENT(rtmutex_slow_sleep)	/* # of sleeps				*/
 94LOCK_EVENT(rtmutex_slow_wake)	/* # of wakeup's			*/
 95LOCK_EVENT(rtmutex_deadlock)	/* # of rt_mutex_handle_deadlock()'s	*/
 96
 97/*
 98 * Locking events for lockdep
 99 */
100LOCK_EVENT(lockdep_acquire)
101LOCK_EVENT(lockdep_lock)
102LOCK_EVENT(lockdep_nocheck)