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/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
*
* lttng-cpuhotplug.h
*
* Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
#ifndef LTTNG_CPUHOTPLUG_H
#define LTTNG_CPUHOTPLUG_H
struct lttng_cpuhp_node;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
#include <linux/cpuhotplug.h>
enum lttng_cpuhp_component {
LTTNG_RING_BUFFER_FRONTEND,
LTTNG_RING_BUFFER_BACKEND,
LTTNG_RING_BUFFER_ITER,
LTTNG_CONTEXT_PERF_COUNTERS,
};
struct lttng_cpuhp_node {
enum lttng_cpuhp_component component;
struct hlist_node node;
};
extern enum cpuhp_state lttng_hp_prepare;
extern enum cpuhp_state lttng_hp_online;
int lttng_cpuhp_rb_backend_prepare(unsigned int cpu,
struct lttng_cpuhp_node *node);
int lttng_cpuhp_rb_frontend_dead(unsigned int cpu,
struct lttng_cpuhp_node *node);
int lttng_cpuhp_rb_frontend_online(unsigned int cpu,
struct lttng_cpuhp_node *node);
int lttng_cpuhp_rb_frontend_offline(unsigned int cpu,
struct lttng_cpuhp_node *node);
int lttng_cpuhp_rb_iter_online(unsigned int cpu,
struct lttng_cpuhp_node *node);
/* Ring buffer is a separate library. */
void lttng_rb_set_hp_prepare(enum cpuhp_state val);
void lttng_rb_set_hp_online(enum cpuhp_state val);
extern enum cpuhp_state lttng_rb_hp_prepare;
extern enum cpuhp_state lttng_rb_hp_online;
#endif
#endif /* LTTNG_CPUHOTPLUG_H */
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