projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| ebabbf58 MD |
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 */ |