#ifndef _LIBRINGBUFFER_SMP_H
#define _LIBRINGBUFFER_SMP_H
/*
* libringbuffer/smp.h
*
* Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; only
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "getcpu.h"
/*
* 4kB of per-cpu data available. Enough to hold the control structures,
* but not ring buffers.
*/
#define PER_CPU_MEM_SIZE 4096
extern int __num_possible_cpus;
extern void _get_num_possible_cpus(void);
static inline
int num_possible_cpus(void)
{
if (!__num_possible_cpus)
_get_num_possible_cpus();
return __num_possible_cpus;
}
#define for_each_possible_cpu(cpu) \
for ((cpu) = 0; (cpu) < num_possible_cpus(); (cpu)++)
#endif /* _LIBRINGBUFFER_SMP_H */