/* 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 <[email protected]> */ #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_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 */
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