projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| ebabbf58 | 1 | /* |
| c0c0989a | 2 | * SPDX-License-Identifier: LGPL-2.1-only |
| ebabbf58 MD |
3 | * |
| 4 | * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| ebabbf58 MD |
5 | */ |
| 6 | ||
| c0c0989a MJ |
7 | #ifndef _LIBCOUNTER_SMP_H |
| 8 | #define _LIBCOUNTER_SMP_H | |
| 9 | ||
| ebabbf58 MD |
10 | /* |
| 11 | * 4kB of per-cpu data available. | |
| 12 | */ | |
| 13 | #define LTTNG_COUNTER_PER_CPU_MEM_SIZE 4096 | |
| 14 | ||
| 1d18d519 MJ |
15 | extern int __lttng_counter_num_possible_cpus |
| 16 | __attribute__((visibility("hidden"))); | |
| ddabe860 | 17 | |
| 1d18d519 MJ |
18 | extern void _lttng_counter_get_num_possible_cpus(void) |
| 19 | __attribute__((visibility("hidden"))); | |
| ebabbf58 MD |
20 | |
| 21 | static inline | |
| 22 | int lttng_counter_num_possible_cpus(void) | |
| 23 | { | |
| 24 | if (!__lttng_counter_num_possible_cpus) | |
| 25 | _lttng_counter_get_num_possible_cpus(); | |
| 26 | return __lttng_counter_num_possible_cpus; | |
| 27 | } | |
| 28 | ||
| 29 | #define lttng_counter_for_each_possible_cpu(cpu) \ | |
| 30 | for ((cpu) = 0; (cpu) < lttng_counter_num_possible_cpus(); (cpu)++) | |
| 31 | ||
| 32 | #endif /* _LIBCOUNTER_SMP_H */ |