src/include/rt-sched.h

/*
   rt-sched.h - sched_setattr() and sched_getattr() API

   (C) Dario Faggioli <raistlin@linux.it>, 2009, 2010
   Copyright (C) 2014 BMW Car IT GmbH, Daniel Wagner <daniel.wagner@bmw-carit.de

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
   USA */

/* This file is based on Dario Faggioli's libdl. Eventually it will be
   replaced by a proper implemenation of this API. */

#ifndef __RT_SCHED_H__
#define __RT_SCHED_H__

#include <stdint.h>
#include <sys/types.h>

#ifndef SCHED_DEADLINE
#define SCHED_DEADLINE 6
#endif

#ifdef __x86_64__
#define __NR_sched_setattr		314
#define __NR_sched_getattr		315
#endif

#ifdef __i386__
#define __NR_sched_setattr		351
#define __NR_sched_getattr		352
#endif

#ifdef __arm__
#define __NR_sched_setattr		380
#define __NR_sched_getattr		381
#endif

struct sched_attr {
	uint32_t size;
	uint32_t sched_policy;
	uint64_t sched_flags;

	/* SCHED_NORMAL, SCHED_BATCH */
	int32_t sched_nice;

	/* SCHED_FIFO, SCHED_RR */
	uint32_t sched_priority;

	/* SCHED_DEADLINE */
	uint64_t sched_runtime;
	uint64_t sched_deadline;
	uint64_t sched_period;
};

int sched_setattr(pid_t pid,
		  const struct sched_attr *attr,
		  unsigned int flags);

int sched_getattr(pid_t pid,
		  struct sched_attr *attr,
		  unsigned int size,
		  unsigned int flags);

#endif /* __RT_SCHED_H__ */