Waiman Long | ad53fa1 | 2019-04-04 13:43:16 -0400 | [diff] [blame] | 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 | */ |
| 25 | LOCK_EVENT(pv_hash_hops) /* Average # of hops per hashing operation */ |
| 26 | LOCK_EVENT(pv_kick_unlock) /* # of vCPU kicks issued at unlock time */ |
| 27 | LOCK_EVENT(pv_kick_wake) /* # of vCPU kicks for pv_latency_wake */ |
| 28 | LOCK_EVENT(pv_latency_kick) /* Average latency (ns) of vCPU kick */ |
| 29 | LOCK_EVENT(pv_latency_wake) /* Average latency (ns) of kick-to-wakeup */ |
| 30 | LOCK_EVENT(pv_lock_stealing) /* # of lock stealing operations */ |
| 31 | LOCK_EVENT(pv_spurious_wakeup) /* # of spurious wakeups in non-head vCPUs */ |
| 32 | LOCK_EVENT(pv_wait_again) /* # of wait's after queue head vCPU kick */ |
| 33 | LOCK_EVENT(pv_wait_early) /* # of early vCPU wait's */ |
| 34 | LOCK_EVENT(pv_wait_head) /* # of vCPU wait's at the queue head */ |
| 35 | LOCK_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 | */ |
| 44 | LOCK_EVENT(lock_pending) /* # of locking ops via pending code */ |
| 45 | LOCK_EVENT(lock_slowpath) /* # of locking ops via MCS lock queue */ |
| 46 | LOCK_EVENT(lock_use_node2) /* # of locking ops that use 2nd percpu node */ |
| 47 | LOCK_EVENT(lock_use_node3) /* # of locking ops that use 3rd percpu node */ |
| 48 | LOCK_EVENT(lock_use_node4) /* # of locking ops that use 4th percpu node */ |
| 49 | LOCK_EVENT(lock_no_node) /* # of locking ops w/o using percpu node */ |
| 50 | #endif /* CONFIG_QUEUED_SPINLOCKS */ |
Waiman Long | a865459 | 2019-04-04 13:43:19 -0400 | [diff] [blame] | 51 | |
| 52 | /* |
| 53 | * Locking events for rwsem |
| 54 | */ |
| 55 | LOCK_EVENT(rwsem_sleep_reader) /* # of reader sleeps */ |
| 56 | LOCK_EVENT(rwsem_sleep_writer) /* # of writer sleeps */ |
| 57 | LOCK_EVENT(rwsem_wake_reader) /* # of reader wakeups */ |
| 58 | LOCK_EVENT(rwsem_wake_writer) /* # of writer wakeups */ |
Waiman Long | 5cfd92e | 2019-05-20 16:59:14 -0400 | [diff] [blame] | 59 | LOCK_EVENT(rwsem_opt_rlock) /* # of opt-acquired read locks */ |
| 60 | LOCK_EVENT(rwsem_opt_wlock) /* # of opt-acquired write locks */ |
| 61 | LOCK_EVENT(rwsem_opt_fail) /* # of failed optspins */ |
| 62 | LOCK_EVENT(rwsem_opt_nospin) /* # of disabled optspins */ |
| 63 | LOCK_EVENT(rwsem_opt_norspin) /* # of disabled reader-only optspins */ |
| 64 | LOCK_EVENT(rwsem_opt_rlock2) /* # of opt-acquired 2ndary read locks */ |
Waiman Long | a865459 | 2019-04-04 13:43:19 -0400 | [diff] [blame] | 65 | LOCK_EVENT(rwsem_rlock) /* # of read locks acquired */ |
| 66 | LOCK_EVENT(rwsem_rlock_fast) /* # of fast read locks acquired */ |
| 67 | LOCK_EVENT(rwsem_rlock_fail) /* # of failed read lock acquisitions */ |
Waiman Long | 4f23dbc | 2019-05-20 16:59:06 -0400 | [diff] [blame] | 68 | LOCK_EVENT(rwsem_rlock_handoff) /* # of read lock handoffs */ |
Waiman Long | a865459 | 2019-04-04 13:43:19 -0400 | [diff] [blame] | 69 | LOCK_EVENT(rwsem_wlock) /* # of write locks acquired */ |
| 70 | LOCK_EVENT(rwsem_wlock_fail) /* # of failed write lock acquisitions */ |
Waiman Long | 4f23dbc | 2019-05-20 16:59:06 -0400 | [diff] [blame] | 71 | LOCK_EVENT(rwsem_wlock_handoff) /* # of write lock handoffs */ |