projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| 1e367326 MD |
1 | #ifndef LTTNG_CPUHOTPLUG_H |
| 2 | #define LTTNG_CPUHOTPLUG_H | |
| 3 | ||
| 4 | /* | |
| 5 | * lttng-cpuhotplug.h | |
| 6 | * | |
| 7 | * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 8 | * | |
| 9 | * This library is free software; you can redistribute it and/or | |
| 10 | * modify it under the terms of the GNU Lesser General Public | |
| 11 | * License as published by the Free Software Foundation; only | |
| 12 | * version 2.1 of the License. | |
| 13 | * | |
| 14 | * This library is distributed in the hope that it will be useful, | |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 17 | * Lesser General Public License for more details. | |
| 18 | * | |
| 19 | * You should have received a copy of the GNU Lesser General Public | |
| 20 | * License along with this library; if not, write to the Free Software | |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 22 | */ | |
| 23 | ||
| 1e367326 MD |
24 | struct lttng_cpuhp_node; |
| 25 | ||
| 26 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) | |
| da3b99a6 MD |
27 | |
| 28 | #include <linux/cpuhotplug.h> | |
| 29 | ||
| 1e367326 MD |
30 | enum lttng_cpuhp_component { |
| 31 | LTTNG_RING_BUFFER_FRONTEND, | |
| 32 | LTTNG_RING_BUFFER_BACKEND, | |
| 33 | LTTNG_RING_BUFFER_ITER, | |
| 34 | LTTNG_CONTEXT_PERF_COUNTERS, | |
| 35 | }; | |
| 36 | ||
| 37 | struct lttng_cpuhp_node { | |
| 38 | enum lttng_cpuhp_component component; | |
| 39 | struct hlist_node node; | |
| 40 | }; | |
| 41 | ||
| 42 | extern enum cpuhp_state lttng_hp_prepare; | |
| 43 | extern enum cpuhp_state lttng_hp_online; | |
| 44 | ||
| 45 | int lttng_cpuhp_rb_backend_prepare(unsigned int cpu, | |
| 46 | struct lttng_cpuhp_node *node); | |
| 47 | int lttng_cpuhp_rb_frontend_dead(unsigned int cpu, | |
| 48 | struct lttng_cpuhp_node *node); | |
| 49 | int lttng_cpuhp_rb_frontend_online(unsigned int cpu, | |
| 50 | struct lttng_cpuhp_node *node); | |
| 51 | int lttng_cpuhp_rb_frontend_offline(unsigned int cpu, | |
| 52 | struct lttng_cpuhp_node *node); | |
| 53 | int lttng_cpuhp_rb_iter_online(unsigned int cpu, | |
| 54 | struct lttng_cpuhp_node *node); | |
| 55 | ||
| 56 | /* Ring buffer is a separate library. */ | |
| 57 | void lttng_rb_set_hp_prepare(enum cpuhp_state val); | |
| 58 | void lttng_rb_set_hp_online(enum cpuhp_state val); | |
| 59 | ||
| 60 | extern enum cpuhp_state lttng_rb_hp_prepare; | |
| 61 | extern enum cpuhp_state lttng_rb_hp_online; | |
| 62 | ||
| 63 | #endif | |
| 64 | ||
| 65 | #endif /* LTTNG_CPUHOTPLUG_H */ |