68 lines
3.0 KiB
C
68 lines
3.0 KiB
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 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_wlock) /* # of write locks opt-spin acquired */
|
|
LOCK_EVENT(rwsem_opt_fail) /* # of failed opt-spinnings */
|
|
LOCK_EVENT(rwsem_rlock) /* # of read locks acquired */
|
|
LOCK_EVENT(rwsem_rlock_fast) /* # of fast read locks acquired */
|
|
LOCK_EVENT(rwsem_rlock_fail) /* # of failed read lock acquisitions */
|
|
LOCK_EVENT(rwsem_rtrylock) /* # of read trylock calls */
|
|
LOCK_EVENT(rwsem_wlock) /* # of write locks acquired */
|
|
LOCK_EVENT(rwsem_wlock_fail) /* # of failed write lock acquisitions */
|
|
LOCK_EVENT(rwsem_wtrylock) /* # of write trylock calls */
|