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Initial revision

/*	$OpenBSD: rf_acctrace.h,v 1.3 2002/12/16 07:01:03 tdeval Exp $	*/
/*	$NetBSD: rf_acctrace.h,v 1.3 1999/02/05 00:06:06 oster Exp $	*/

/*
 * Copyright (c) 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Mark Holland
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

/*****************************************************************************
 *
 * acctrace.h -- Header file for acctrace.c
 *
 *****************************************************************************/


#ifndef	_RF__RF_ACCTRACE_H_
#define	_RF__RF_ACCTRACE_H_

#include "rf_types.h"
#include "rf_hist.h"
#include "rf_etimer.h"

typedef struct RF_user_acc_stats_s {
	RF_uint64	suspend_ovhd_us;/*
					 * usec spent mucking in the
					 * access-suspension code.
					 */
	RF_uint64	map_us;		/* usec spent mapping the access. */
	RF_uint64	lock_us;	/*
					 * usec spent locking & unlocking
					 * stripes, including time spent
					 * blocked.
					 */
	RF_uint64	dag_create_us;	/* usec spent creating the DAGs. */
	RF_uint64	dag_retry_us;	/*
					 * _total_ usec spent retrying the op
					 * -- not broken down into components.
					 */
	RF_uint64	exec_us;	/* usec spent in DispatchDAG. */
	RF_uint64	exec_engine_us;	/*
					 * usec spent in engine, not including
					 * blocking time.
					 */
	RF_uint64	cleanup_us;	/*
					 * usec spent tearing down the dag &
					 * maps, and generally cleaning up.
					 */
} RF_user_acc_stats_t;

typedef struct RF_recon_acc_stats_s {
	RF_uint32	recon_start_to_fetch_us;
	RF_uint32	recon_fetch_to_return_us;
	RF_uint32	recon_return_to_submit_us;
} RF_recon_acc_stats_t;

typedef struct RF_acctrace_entry_s {
	union {
		RF_user_acc_stats_t	user;
		RF_recon_acc_stats_t	recon;
	}		specific;
	RF_uint8	reconacc;	/*
					 * Whether this is a tracerec for a
					 * user acc or a recon acc.
					 */
	RF_uint64	xor_us;		/* usec spent doing XORs. */
	RF_uint64	q_us;		/* usec spent doing XORs. */
	RF_uint64	plog_us;	/*
					 * usec spent waiting to stuff parity
					 * into log.
					 */
	RF_uint64	diskqueue_us;	/*
					 * _total_ usec spent in disk queue(s),
					 * incl concurrent ops.
					 */
	RF_uint64	diskwait_us;	/*
					 * _total_ usec spent actually waiting
					 * on the disk, incl concurrent ops.
					 */
	RF_uint64	total_us;	/* Total usec spent on this access. */
	RF_uint64	num_phys_ios;	/* Number of physical I/Os invoked. */
	RF_uint64	phys_io_us;	/* Time of physical I/O. */
	RF_Etimer_t	tot_timer;	/*
					 * A timer used to compute total
					 * access time.
					 */
	RF_Etimer_t	timer;		/*
					 * A generic timer val for timing
					 * events that live across procedure
					 * boundaries.
					 */
	RF_Etimer_t	recon_timer;	/* Generic timer for recon stuff. */
	RF_uint64	index;
} RF_AccTraceEntry_t;

typedef struct RF_AccTotals_s {
	/* User acc stats. */
	RF_uint64	suspend_ovhd_us;
	RF_uint64	map_us;
	RF_uint64	lock_us;
	RF_uint64	dag_create_us;
	RF_uint64	dag_retry_us;
	RF_uint64	exec_us;
	RF_uint64	exec_engine_us;
	RF_uint64	cleanup_us;
	RF_uint64	user_reccount;
	/* Recon acc stats. */
	RF_uint64	recon_start_to_fetch_us;
	RF_uint64	recon_fetch_to_return_us;
	RF_uint64	recon_return_to_submit_us;
	RF_uint64	recon_io_overflow_count;
	RF_uint64	recon_phys_io_us;
	RF_uint64	recon_num_phys_ios;
	RF_uint64	recon_diskwait_us;
	RF_uint64	recon_reccount;
	/* Trace entry stats. */
	RF_uint64	xor_us;
	RF_uint64	q_us;
	RF_uint64	plog_us;
	RF_uint64	diskqueue_us;
	RF_uint64	diskwait_us;
	RF_uint64	total_us;
	RF_uint64	num_log_ents;
	RF_uint64	phys_io_overflow_count;
	RF_uint64	num_phys_ios;
	RF_uint64	phys_io_us;
	RF_uint64	bigvals;
	/* Histograms. */
	RF_Hist_t	dw_hist[RF_HIST_NUM_BUCKETS];
	RF_Hist_t	tot_hist[RF_HIST_NUM_BUCKETS];
} RF_AccTotals_t;

#if	RF_UTILITY == 0
RF_DECLARE_EXTERN_MUTEX(rf_tracing_mutex);
#endif	/* RF_UTILITY == 0 */

int  rf_ConfigureAccessTrace(RF_ShutdownList_t **);
void rf_LogTraceRec(RF_Raid_t * raid, RF_AccTraceEntry_t *);
void rf_FlushAccessTraceBuf(void);

#endif	/* !_RF__RF_ACCTRACE_H_ */