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1 | #ifndef _LIBCOUNTER_SMP_H |
2 | #define _LIBCOUNTER_SMP_H | |
3 | ||
4 | /* | |
5 | * libcounter/smp.h | |
6 | * | |
7 | * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; only | |
12 | * version 2.1 of the License. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | */ | |
23 | ||
24 | /* | |
25 | * 4kB of per-cpu data available. | |
26 | */ | |
27 | #define LTTNG_COUNTER_PER_CPU_MEM_SIZE 4096 | |
28 | ||
29 | extern int __lttng_counter_num_possible_cpus; | |
30 | extern void _lttng_counter_get_num_possible_cpus(void); | |
31 | ||
32 | static inline | |
33 | int lttng_counter_num_possible_cpus(void) | |
34 | { | |
35 | if (!__lttng_counter_num_possible_cpus) | |
36 | _lttng_counter_get_num_possible_cpus(); | |
37 | return __lttng_counter_num_possible_cpus; | |
38 | } | |
39 | ||
40 | #define lttng_counter_for_each_possible_cpu(cpu) \ | |
41 | for ((cpu) = 0; (cpu) < lttng_counter_num_possible_cpus(); (cpu)++) | |
42 | ||
43 | #endif /* _LIBCOUNTER_SMP_H */ |