include/cpu.h

/*
 *  Copyright (C) 2000-2008, Parallels, Inc. All rights reserved.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#ifndef	_CPU_H_
#define	_CPU_H_

#define MAXCPUUNITS		500000
#define MINCPUUNITS		8

#define CPUMASK_NBITS		4096
#define CPUMASK_NBYTES		(CPUMASK_NBITS / (8 * sizeof(unsigned long)))
typedef struct {
	unsigned long bits[CPUMASK_NBYTES];
} cpumask_t;

#define NODEMASK_NBITS		4096
#define NODEMASK_NBYTES		(NODEMASK_NBITS / (8 * sizeof(unsigned long)))
typedef struct {
	unsigned long bits[CPUMASK_NBYTES];
} nodemask_t;

/** Data structure for cpu parameters.
 */
typedef struct cpu_param {
	unsigned long *limit;	/**< CPU usage for the CT, in per cent. */
	unsigned long *weight;
	unsigned long *units;	/**< CPU weight for the CT, in units. */
	unsigned long *vcpus;	/**< number of CPUs available in the running CT */
	cpumask_t *mask;	/**< CT's CPU affinity mask */
	nodemask_t *nodemask;	/**< CT's NUMA node affinity mask */
	int cpumask_auto;	/**< Auto-assign cpumask based on NUMA node mask */
} cpu_param;

/**  Apply cpu parameters on running CT.
 *
 * @param h		CT handler.
 * @param veid		CT ID.
 * @param cpu		cpu parameters.
 * @return		0 on success.
 */
int vps_set_cpu(vps_handler *h, envid_t veid, cpu_param *cpu);


int env_set_vcpus(envid_t veid, unsigned int vcpus);
int set_cpumask(envid_t veid, cpumask_t *mask);
int set_nodemask(envid_t veid, nodemask_t *mask);
int get_node_cpumask(nodemask_t *nodemask, cpumask_t *cpumask);
int set_cpuunits(envid_t veid, unsigned int cpuunits);
int set_cpuweight(envid_t veid, unsigned int cpuweight);
int set_cpulimit(envid_t veid, unsigned int cpulimit);

/**  Apply cpu parameters on Host system.
 *
 * @param cpu		cpu parameters.
 * @return		0 on success.
 */
int hn_set_cpu(cpu_param *cpu);
#endif