Fix: pass private data to context callbacks
[lttng-ust.git] / libcounter / smp.h
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ebabbf58 1/*
c0c0989a 2 * SPDX-License-Identifier: LGPL-2.1-only
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3 *
4 * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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5 */
6
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7#ifndef _LIBCOUNTER_SMP_H
8#define _LIBCOUNTER_SMP_H
9
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10/*
11 * 4kB of per-cpu data available.
12 */
13#define LTTNG_COUNTER_PER_CPU_MEM_SIZE 4096
14
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15extern int __lttng_counter_num_possible_cpus
16 __attribute__((visibility("hidden")));
ddabe860 17
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18extern void _lttng_counter_get_num_possible_cpus(void)
19 __attribute__((visibility("hidden")));
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20
21static inline
22int 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 */
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