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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 */ |