/* rcsid[]="$Header: trace.h,v 820.1 86/12/04 19:49:29 root Exp $" */
/* sccsid[]="%W% %Y% %Q% %G%" */

/************************************************************************
*									*
*				Copyright 1984				*
*			VALID LOGIC SYSTEMS INCORPORATED		*
*									*
*	This listing contains confidential proprietary information	*
*	which is not to be disclosed to unauthorized persons without	*
*	written consent of an officer of Valid Logic Systems 		*
*	Incorporated.							*
*									*
*	The copyright notice appearing above is included to provide	*
*	statutory protection in the event of unauthorized or 		*
*	unintentional public disclosure.				*
*									*
************************************************************************/

/*	trace.h	6.1	83/07/29	*/

/*
 * File system buffer tracing points; all trace <dev, bn>
 */
#define	TR_BREADHIT	0	/* buffer read found in cache */
#define	TR_BREADMISS	1	/* buffer read not in cache */
#define	TR_BWRITE	2	/* buffer written */
#define	TR_BREADHITRA	3	/* buffer read-ahead found in cache */
#define	TR_BREADMISSRA	4	/* buffer read-ahead not in cache */
#define	TR_XFODMISS	5	/* exe fod read */
#define	TR_XFODHIT	6	/* exe fod read */
#define	TR_BRELSE	7	/* brelse */

/*
 * Memory allocator trace points; all trace the amount of memory involved
 */
#define	TR_MALL		10	/* memory allocated */
#define	TR_MFREE	11	/* memory free */

/*
 * Paging trace points: all are <vaddr, pid>
 */
#define	TR_INTRANS	20	/* page intransit block */
#define	TR_EINTRANS	21	/* page intransit wait done */
#define	TR_FRECLAIM	22	/* reclaim from free list */
#define	TR_RECLAIM	23	/* reclaim from loop */
#define	TR_XSFREC	24	/* reclaim from free list instead of drum */
#define	TR_XIFREC	25	/* reclaim from free list instead of fsys */
#define	TR_WAITMEM	26	/* wait for memory in pagein */
#define	TR_EWAITMEM	27	/* end memory wait in pagein */
#define	TR_ZFOD		28	/* zfod page fault */
#define	TR_EXFOD	29	/* exec fod page fault */
#define	TR_VRFOD	30	/* vread fod page fault */
#define	TR_CACHEFOD	31	/* fod in file system cache */
#define	TR_SWAPIN	32	/* drum page fault */
#define	TR_PGINDONE	33	/* page in done */
#define	TR_SWAPIO	34	/* swap i/o request arrives */

/*
 * System call trace points.
 */
#define	TR_VADVISE	40	/* vadvise occurred with <arg, pid> */

/*
 * Miscellaneous
 */
#define	TR_STAMP	50	/* user said vtrace(VTR_STAMP, value); */

/*
 * This defines the size of the trace flags array.
 */
#define	TR_NFLAGS	100	/* generous */

#define	TRCSIZ		1024

/*
 * Specifications of the vtrace() system call, which takes one argument.
 */
#define	VTRACE		64+51

#define	VTR_DISABLE	0		/* set a trace flag to 0 */
#define	VTR_ENABLE	1		/* set a trace flag to 1 */
#define	VTR_VALUE	2		/* return value of a trace flag */
#define	VTR_UALARM	3		/* set alarm to go off (sig 16) */
					/* in specified number of hz */
#define	VTR_STAMP	4		/* user specified stamp */

#ifdef	KERNEL
#ifdef	TRACE
char	traceflags[TR_NFLAGS];
struct	proc *traceproc;
int	tracebuf[TRCSIZ];
unsigned tracex;
int	tracewhich;
#define	trace(a,b,c)	if (traceflags[a]) trace1(a,b,c)

#else	TRACE
#define	trace(a,b,b)	;
#endif	TRACE
#endif	KERNEL
