/* * include/linux/dpm.h  DPM policy management * * 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 * * Copyright (C) 2002, International Business Machines Corporation * All Rights Reserved * * Robert Paulsen * IBM Linux Technology Center * rpaulsen@us.ibm.com * August, 2002 * */#ifndef __DPM_STATS_H__#define __DPM_STATS_H__/* Machine dependent timing/counts.  If the machine has not defined   DPM_MD_STATS, we use a generic routine based on gettimeofday and 64-bit   values.  Depending on how DPM is being used this may be really slow,   though. */#ifndef DPM_MD_STATStypedef __u64 dpm_md_time_t;typedef __u64 dpm_md_count_t;#endif/* statistics */struct dpm_stats {        dpm_md_count_t	count;        dpm_md_time_t	total_time;        dpm_md_time_t	start_time;        dpm_md_time_t	end_time;};/* Kernel-only defines */#ifdef __KERNEL__#ifndef DPM_MD_STATSextern inline dpm_md_time_tdpm_md_time(){	struct timeval tv;	u64 time;	do_gettimeofday(&tv);	time = ((u64)tv.tv_sec * 1000000) + tv.tv_usec;	return time;}	#define DPM_MD_HZ 1000000#endif /* DPM_MD_STATS *//***************************************************************************** * operating state statistics *****************************************************************************/extern struct dpm_stats dpm_state_stats[DPM_STATES];/* get statistics for a policy */int dpm_get_policy_stats(char *name, struct dpm_stats *stats);/* get statistics for a class */int dpm_get_class_stats(char *name, struct dpm_stats *stats);/* get statistics for an operating point */int dpm_get_opt_stats(char *name, struct dpm_stats *stats);/* get statistics for all operating states */int dpm_get_os_stats(struct dpm_stats *stats);/* update statistics structures */dpm_md_time_tdpm_update_stats(struct dpm_stats *new, struct dpm_stats *old);/* initialize operating state statistics */void dpm_init_stats(void);/* initialize idle state statistics */void dpm_init_idle_stats(void);/* * idle statistics */struct dpm_idle_lats {	unsigned idles;	unsigned idle_preemptions;	unsigned quick_idles;	unsigned full_idles;	unsigned inefficient_idles;	unsigned interrupted_idles;	unsigned max_latency_to_idle;	unsigned max_latency_to_idle_task;	unsigned max_cs_to_idle;};extern struct dpm_idle_lats idle_lats;#endif /*__KERNEL__*/#endif /*__DPM_STATS_H__*/