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freebsd-skq/sys/sys/ktr.h
John Baldwin d8f03321bd - Remove much of the inlining of the KTR tracepoints into a ktr_tracepoint() 
function declared in kern_ktr.c.  The only inline checks left are the
  checks that compare KTR_COMPILE with the supplied mask and thus should
  be optimized away into either nothing or a direct call to ktr_tracepoint().
- Move several KTR-related options to opt_ktr.h now that they are only
  needed by kern_ktr.c and not by ktr.h.
- Add in the ktr_verbose functionality if KTR_EXTEND is turned on.  If the
  global variable 'ktr_verbose' is non-zero, then KTR messages will be
  dumped to the console.  This variable can be set by either kernel code
  or via the 'debug.ktr_verbose' sysctl.  It defaults to off unless the
  KTR_VERBOSE kernel option is specified in which case it defaults to on.
  This can be useful when the machine locks up spinning in a loop with
  interrupts disabled as you might be able to see what it is doing when it
  locks up.

Requested by:	phk
2000-11-07 01:49:48 +00:00

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/*-
* Copyright (c) 1996 Berkeley Software Design, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Berkeley Software Design Inc's name may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from BSDI $Id: ktr.h,v 1.10.2.7 2000/03/16 21:44:42 cp Exp $
* $FreeBSD$
*/
/*
* Wraparound kernel trace buffer support.
*/
#ifndef _SYS_KTR_H_
#define _SYS_KTR_H_
/* Requires sys/types.h, sys/time.h, machine/atomic.h, and machine/cpufunc.h */
#include <machine/atomic.h>
#include <machine/cpufunc.h>
/*
* Trace classes
*/
#define KTR_GEN 0x00000001 /* General (TR) */
#define KTR_NET 0x00000002 /* Network */
#define KTR_DEV 0x00000004 /* Device driver */
#define KTR_LOCK 0x00000008 /* MP locking */
#define KTR_SMP 0x00000010 /* MP general */
#define KTR_FS 0x00000020 /* Filesystem */
#define KTR_PMAP 0x00000040 /* Pmap tracing */
#define KTR_MALLOC 0x00000080 /* Malloc tracing */
#define KTR_TRAP 0x00000100 /* Trap processing */
#define KTR_INTR 0x00000200 /* Interrupt tracing */
#define KTR_SIG 0x00000400 /* Signal processing */
#define KTR_CLK 0x00000800 /* hardclock verbose */
#define KTR_PROC 0x00001000 /* Process scheduling */
#define KTR_SYSC 0x00002000 /* System call */
#define KTR_INIT 0x00004000 /* System initialization */
#define KTR_KGDB 0x00008000 /* Trace kgdb internals */
#define KTR_IO 0x00010000 /* Upper I/O */
#define KTR_LOCKMGR 0x00020000
#define KTR_NFS 0x00040000 /* The obvious */
#define KTR_VOP 0x00080000 /* The obvious */
#define KTR_VM 0x00100000 /* The virtual memory system */
#define KTR_IDLELOOP 0x00200000 /* checks done in the idle process */
/*
* Trace classes which can be assigned to particular use at compile time
* These must remain in high 22 as some assembly code counts on it
*/
#define KTR_CT1 0x010000000
#define KTR_CT2 0x020000000
#define KTR_CT3 0x040000000
#define KTR_CT4 0x080000000
#define KTR_CT5 0x100000000
#define KTR_CT6 0x200000000
#define KTR_CT7 0x400000000
#define KTR_CT8 0x800000000
/* Trace classes to compile in */
#ifndef KTR_COMPILE
#define KTR_COMPILE (KTR_GEN)
#endif
#ifndef LOCORE
#include <sys/time.h>
struct ktr_entry {
struct timespec ktr_tv;
#ifdef KTR_EXTEND
#ifndef KTRDESCSIZE
#define KTRDESCSIZE 80
#endif
#ifndef KTRFILENAMESIZE
#define KTRFILENAMESIZE 32
#endif
char ktr_desc [KTRDESCSIZE];
char ktr_filename [KTRFILENAMESIZE];
int ktr_line;
int ktr_cpu;
#else
char *ktr_desc;
u_long ktr_parm1;
u_long ktr_parm2;
u_long ktr_parm3;
u_long ktr_parm4;
u_long ktr_parm5;
#endif
};
/* These variables are used by gdb to analyse the output */
extern int ktr_extend;
extern int ktr_cpumask;
extern int ktr_mask;
extern int ktr_entries;
extern int ktr_verbose;
extern volatile int ktr_idx;
extern struct ktr_entry ktr_buf[];
#endif /* !LOCORE */
#ifdef KTR
#ifndef KTR_ENTRIES
#define KTR_ENTRIES 1024
#endif
#ifdef KTR_EXTEND
void ktr_tracepoint(u_int mask, char *filename, u_int line,
char *format, ...);
#else
void ktr_tracepoint(u_int mask, char *format, u_long arg1, u_long arg2,
u_long arg3, u_long arg4, u_long arg5);
#endif
#ifdef KTR_EXTEND
#define CTR(m, format, args...) do { \
if (KTR_COMPILE & (m)) \
ktr_tracepoint((m), __FILE__, __LINE__, format , ##args); \
} while(0)
#define CTR0(m, format) CTR(m, format)
#define CTR1(m, format, p1) CTR(m, format, p1)
#define CTR2(m, format, p1, p2) CTR(m, format, p1, p2)
#define CTR3(m, format, p1, p2, p3) CTR(m, format, p1, p2, p3)
#define CTR4(m, format, p1, p2, p3, p4) CTR(m, format, p1, p2, p3, p4)
#define CTR5(m, format, p1, p2, p3, p4, p5) \
CTR(m, format, p1, p2, p3, p4, p5)
#else /* not extended */
#define CTR5(m, format, p1, p2, p3, p4, p5) do { \
if (KTR_COMPILE & (m)) \
ktr_tracepoint((m), format, (u_long)p1, (u_long)p2, \
(u_long)p3, (u_long)p4, (u_long)p5); \
} while(0)
#define CTR0(m, format) CTR5(m, format, 0, 0, 0, 0, 0)
#define CTR1(m, format, p1) CTR5(m, format, p1, 0, 0, 0, 0)
#define CTR2(m, format, p1, p2) CTR5(m, format, p1, p2, 0, 0, 0)
#define CTR3(m, format, p1, p2, p3) CTR5(m, format, p1, p2, p3, 0, 0)
#define CTR4(m, format, p1, p2, p3, p4) CTR5(m, format, p1, p2, p3, p4, 0)
#endif /* KTR_EXTEND */
#else /* KTR */
#undef KTR_COMPILE
#define KTR_COMPILE 0
#define CTR0(m, d)
#define CTR1(m, d, p1)
#define CTR2(m, d, p1, p2)
#define CTR3(m, d, p1, p2, p3)
#define CTR4(m, d, p1, p2, p3, p4)
#define CTR5(m, d, p1, p2, p3, p4, p5)
/* XXX vvvvvvvv ??? */
#define SEG_ATR(d,s)
#define SEG_ATR_DESC(d,s)
#define ATR(d)
#define CATR(f,d,n)
#define CATRD(f,d,n)
#endif /* KTR */
#define TR0(d) CTR0(KTR_GEN, d)
#define TR1(d, p1) CTR1(KTR_GEN, d, p1)
#define TR2(d, p1, p2) CTR2(KTR_GEN, d, p1, p2)
#define TR3(d, p1, p2, p3) CTR3(KTR_GEN, d, p1, p2, p3)
#define TR4(d, p1, p2, p3, p4) CTR4(KTR_GEN, d, p1, p2, p3, p4)
#define TR5(d, p1, p2, p3, p4, p5) CTR5(KTR_GEN, d, p1, p2, p3, p4, p5)
/*
* Trace initialization events, similar to CTR with KTR_INIT, but
* completely ifdef'ed out if KTR_INIT isn't in KTR_COMPILE (to
* save string space, the compiler doesn't optimize out strings
* for the conditional ones above).
*/
#if (KTR_COMPILE & KTR_INIT) != 0
#define ITR0(d) CTR0(KTR_INIT, d)
#define ITR1(d, p1) CTR1(KTR_INIT, d, p1)
#define ITR2(d, p1, p2) CTR2(KTR_INIT, d, p1, p2)
#define ITR3(d, p1, p2, p3) CTR3(KTR_INIT, d, p1, p2, p3)
#define ITR4(d, p1, p2, p3, p4) CTR4(KTR_INIT, d, p1, p2, p3, p4)
#define ITR5(d, p1, p2, p3, p4, p5) CTR5(KTR_INIT, d, p1, p2, p3, p4, p5)
#else
#define ITR0(d)
#define ITR1(d, p1)
#define ITR2(d, p1, p2)
#define ITR3(d, p1, p2, p3)
#define ITR4(d, p1, p2, p3, p4)
#define ITR5(d, p1, p2, p3, p4, p5)
#endif
#endif /* !_SYS_KTR_H_ */
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