projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| 9f36eaed MJ |
1 | /* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) |
| 2 | * | |
| 1e367326 MD |
3 | * lttng-cpuhotplug.h |
| 4 | * | |
| 5 | * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 1e367326 MD |
6 | */ |
| 7 | ||
| 9f36eaed MJ |
8 | #ifndef LTTNG_CPUHOTPLUG_H |
| 9 | #define LTTNG_CPUHOTPLUG_H | |
| 10 | ||
| 1e367326 MD |
11 | struct lttng_cpuhp_node; |
| 12 | ||
| 13 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) | |
| da3b99a6 MD |
14 | |
| 15 | #include <linux/cpuhotplug.h> | |
| 16 | ||
| 1e367326 MD |
17 | enum lttng_cpuhp_component { |
| 18 | LTTNG_RING_BUFFER_FRONTEND, | |
| 19 | LTTNG_RING_BUFFER_BACKEND, | |
| 20 | LTTNG_RING_BUFFER_ITER, | |
| 21 | LTTNG_CONTEXT_PERF_COUNTERS, | |
| 22 | }; | |
| 23 | ||
| 24 | struct lttng_cpuhp_node { | |
| 25 | enum lttng_cpuhp_component component; | |
| 26 | struct hlist_node node; | |
| 27 | }; | |
| 28 | ||
| 29 | extern enum cpuhp_state lttng_hp_prepare; | |
| 30 | extern enum cpuhp_state lttng_hp_online; | |
| 31 | ||
| 32 | int lttng_cpuhp_rb_backend_prepare(unsigned int cpu, | |
| 33 | struct lttng_cpuhp_node *node); | |
| 34 | int lttng_cpuhp_rb_frontend_dead(unsigned int cpu, | |
| 35 | struct lttng_cpuhp_node *node); | |
| 36 | int lttng_cpuhp_rb_frontend_online(unsigned int cpu, | |
| 37 | struct lttng_cpuhp_node *node); | |
| 38 | int lttng_cpuhp_rb_frontend_offline(unsigned int cpu, | |
| 39 | struct lttng_cpuhp_node *node); | |
| 40 | int lttng_cpuhp_rb_iter_online(unsigned int cpu, | |
| 41 | struct lttng_cpuhp_node *node); | |
| 42 | ||
| 43 | /* Ring buffer is a separate library. */ | |
| 44 | void lttng_rb_set_hp_prepare(enum cpuhp_state val); | |
| 45 | void lttng_rb_set_hp_online(enum cpuhp_state val); | |
| 46 | ||
| 47 | extern enum cpuhp_state lttng_rb_hp_prepare; | |
| 48 | extern enum cpuhp_state lttng_rb_hp_online; | |
| 49 | ||
| 50 | #endif | |
| 51 | ||
| 52 | #endif /* LTTNG_CPUHOTPLUG_H */ |