2019-04-05 01:43:16 +08:00
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Authors: Waiman Long <longman@redhat.com>
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*/
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#ifndef LOCK_EVENT
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#define LOCK_EVENT(name) LOCKEVENT_ ## name,
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#endif
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#ifdef CONFIG_QUEUED_SPINLOCKS
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#ifdef CONFIG_PARAVIRT_SPINLOCKS
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/*
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* Locking events for PV qspinlock.
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*/
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LOCK_EVENT(pv_hash_hops) /* Average # of hops per hashing operation */
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LOCK_EVENT(pv_kick_unlock) /* # of vCPU kicks issued at unlock time */
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LOCK_EVENT(pv_kick_wake) /* # of vCPU kicks for pv_latency_wake */
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LOCK_EVENT(pv_latency_kick) /* Average latency (ns) of vCPU kick */
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LOCK_EVENT(pv_latency_wake) /* Average latency (ns) of kick-to-wakeup */
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LOCK_EVENT(pv_lock_stealing) /* # of lock stealing operations */
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LOCK_EVENT(pv_spurious_wakeup) /* # of spurious wakeups in non-head vCPUs */
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LOCK_EVENT(pv_wait_again) /* # of wait's after queue head vCPU kick */
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LOCK_EVENT(pv_wait_early) /* # of early vCPU wait's */
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LOCK_EVENT(pv_wait_head) /* # of vCPU wait's at the queue head */
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LOCK_EVENT(pv_wait_node) /* # of vCPU wait's at non-head queue node */
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#endif /* CONFIG_PARAVIRT_SPINLOCKS */
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/*
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* Locking events for qspinlock
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*
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* Subtracting lock_use_node[234] from lock_slowpath will give you
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* lock_use_node1.
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*/
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LOCK_EVENT(lock_pending) /* # of locking ops via pending code */
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LOCK_EVENT(lock_slowpath) /* # of locking ops via MCS lock queue */
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LOCK_EVENT(lock_use_node2) /* # of locking ops that use 2nd percpu node */
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LOCK_EVENT(lock_use_node3) /* # of locking ops that use 3rd percpu node */
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LOCK_EVENT(lock_use_node4) /* # of locking ops that use 4th percpu node */
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LOCK_EVENT(lock_no_node) /* # of locking ops w/o using percpu node */
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#endif /* CONFIG_QUEUED_SPINLOCKS */
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2019-04-05 01:43:19 +08:00
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/*
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* Locking events for rwsem
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*/
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LOCK_EVENT(rwsem_sleep_reader) /* # of reader sleeps */
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LOCK_EVENT(rwsem_sleep_writer) /* # of writer sleeps */
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LOCK_EVENT(rwsem_wake_reader) /* # of reader wakeups */
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LOCK_EVENT(rwsem_wake_writer) /* # of writer wakeups */
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LOCK_EVENT(rwsem_opt_wlock) /* # of write locks opt-spin acquired */
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LOCK_EVENT(rwsem_opt_fail) /* # of failed opt-spinnings */
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LOCK_EVENT(rwsem_rlock) /* # of read locks acquired */
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LOCK_EVENT(rwsem_rlock_fast) /* # of fast read locks acquired */
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LOCK_EVENT(rwsem_rlock_fail) /* # of failed read lock acquisitions */
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LOCK_EVENT(rwsem_rtrylock) /* # of read trylock calls */
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LOCK_EVENT(rwsem_wlock) /* # of write locks acquired */
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LOCK_EVENT(rwsem_wlock_fail) /* # of failed write lock acquisitions */
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LOCK_EVENT(rwsem_wtrylock) /* # of write trylock calls */
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