NetBSD/sys/uvm/uvm_stat.h
dbj 5b4c9f2016 rearrange struct uvm_history to put the struct simplelock at the end.
This avoids problems with the kernel grovelling vmstat -u/-U when
using LOCKDEBUG, which changes the size of struct simplelock.
Replaced the original location of the simplelock with "int unused"
so that binary compatibility will be retained with old vmstat.
2004-01-24 21:29:03 +00:00

257 lines
7.3 KiB
C

/* $NetBSD: uvm_stat.h,v 1.28 2004/01/24 21:29:03 dbj Exp $ */
/*
*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles D. Cranor and
* Washington University.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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: Id: uvm_stat.h,v 1.1.2.4 1998/02/07 01:16:56 chs Exp
*/
#ifndef _UVM_UVM_STAT_H_
#define _UVM_UVM_STAT_H_
#if defined(_KERNEL_OPT)
#include "opt_uvmhist.h"
#endif
#include <sys/queue.h>
/*
* uvm_stat: monitor what is going on with uvm (or whatever)
*/
/*
* counters [XXX: maybe replace event counters with this]
*/
#define UVMCNT_MASK 0xf /* rest are private */
#define UVMCNT_CNT 0 /* normal counter */
#define UVMCNT_DEV 1 /* device event counter */
struct uvm_cnt {
int c; /* the value */
int t; /* type */
struct uvm_cnt *next; /* global list of cnts */
char *name; /* counter name */
void *p; /* private data */
};
#ifdef _KERNEL
extern struct uvm_cnt *uvm_cnt_head;
/*
* counter operations. assume spl is set ok.
*/
#define UVMCNT_INIT(CNT,TYP,VAL,NAM,PRIV) \
do { \
CNT.c = VAL; \
CNT.t = TYP; \
CNT.next = uvm_cnt_head; \
uvm_cnt_head = &CNT; \
CNT.name = NAM; \
CNT.p = PRIV; \
} while (/*CONSTCOND*/ 0)
#define UVMCNT_SET(C,V) \
do { \
(C).c = (V); \
} while (/*CONSTCOND*/ 0)
#define UVMCNT_ADD(C,V) \
do { \
(C).c += (V); \
} while (/*CONSTCOND*/ 0)
#define UVMCNT_INCR(C) UVMCNT_ADD(C,1)
#define UVMCNT_DECR(C) UVMCNT_ADD(C,-1)
#endif /* _KERNEL */
/*
* history/tracing
*/
struct uvm_history_ent {
struct timeval tv; /* time stamp */
int cpunum;
char *fmt; /* printf format */
size_t fmtlen; /* length of printf format */
char *fn; /* function name */
size_t fnlen; /* length of function name */
u_long call; /* function call number */
u_long v[4]; /* values */
};
struct uvm_history {
const char *name; /* name of this this history */
size_t namelen; /* length of name, not including null */
LIST_ENTRY(uvm_history) list; /* link on list of all histories */
int n; /* number of entries */
int f; /* next free one */
int unused; /* old location of struct simplelock */
struct uvm_history_ent *e; /* the malloc'd entries */
struct simplelock l; /* lock on this history */
};
LIST_HEAD(uvm_history_head, uvm_history);
/*
* grovelling lists all at once. we currently do not allow more than
* 32 histories to exist, as the way to dump a number of them at once
* is by calling uvm_hist() with a bitmask.
*/
/* this is used to set the size of some arrays */
#define MAXHISTS 32 /* do not change this! */
/* and these are the bit values of each history */
#define UVMHIST_MAPHIST 0x00000001 /* maphist */
#define UVMHIST_PDHIST 0x00000002 /* pdhist */
#define UVMHIST_UBCHIST 0x00000004 /* ubchist */
#ifdef _KERNEL
/*
* macros to use the history/tracing code. note that UVMHIST_LOG
* must take 4 arguments (even if they are ignored by the format).
*/
#ifndef UVMHIST
#define UVMHIST_DECL(NAME)
#define UVMHIST_INIT(NAME,N)
#define UVMHIST_INIT_STATIC(NAME,BUF)
#define UVMHIST_LOG(NAME,FMT,A,B,C,D)
#define UVMHIST_CALLED(NAME)
#define UVMHIST_FUNC(FNAME)
#define uvmhist_dump(NAME)
#else
#include <sys/kernel.h> /* for "cold" variable */
extern struct uvm_history_head uvm_histories;
#define UVMHIST_DECL(NAME) struct uvm_history NAME
#define UVMHIST_INIT(NAME,N) \
do { \
(NAME).name = __STRING(NAME); \
(NAME).namelen = strlen((NAME).name); \
(NAME).n = (N); \
(NAME).f = 0; \
simple_lock_init(&(NAME).l); \
(NAME).e = (struct uvm_history_ent *) \
malloc(sizeof(struct uvm_history_ent) * (N), M_TEMP, \
M_WAITOK); \
memset((NAME).e, 0, sizeof(struct uvm_history_ent) * (N)); \
LIST_INSERT_HEAD(&uvm_histories, &(NAME), list); \
} while (/*CONSTCOND*/ 0)
#define UVMHIST_INIT_STATIC(NAME,BUF) \
do { \
(NAME).name = __STRING(NAME); \
(NAME).namelen = strlen((NAME).name); \
(NAME).n = sizeof(BUF) / sizeof(struct uvm_history_ent); \
(NAME).f = 0; \
simple_lock_init(&(NAME).l); \
(NAME).e = (struct uvm_history_ent *) (BUF); \
memset((NAME).e, 0, sizeof(struct uvm_history_ent) * (NAME).n); \
LIST_INSERT_HEAD(&uvm_histories, &(NAME), list); \
} while (/*CONSTCOND*/ 0)
#if defined(UVMHIST_PRINT)
extern int uvmhist_print_enabled;
#define UVMHIST_PRINTNOW(E) \
do { \
if (uvmhist_print_enabled) { \
uvmhist_print(E); \
DELAY(100000); \
} \
} while (/*CONSTCOND*/ 0)
#else
#define UVMHIST_PRINTNOW(E) /* nothing */
#endif
#define UVMHIST_LOG(NAME,FMT,A,B,C,D) \
do { \
int _i_, _s_ = splhigh(); \
simple_lock(&(NAME).l); \
_i_ = (NAME).f; \
(NAME).f = (_i_ + 1) % (NAME).n; \
simple_unlock(&(NAME).l); \
splx(_s_); \
if (!cold) \
microtime(&(NAME).e[_i_].tv); \
(NAME).e[_i_].cpunum = cpu_number(); \
(NAME).e[_i_].fmt = (FMT); \
(NAME).e[_i_].fmtlen = strlen((NAME).e[_i_].fmt); \
(NAME).e[_i_].fn = _uvmhist_name; \
(NAME).e[_i_].fnlen = strlen((NAME).e[_i_].fn); \
(NAME).e[_i_].call = _uvmhist_call; \
(NAME).e[_i_].v[0] = (u_long)(A); \
(NAME).e[_i_].v[1] = (u_long)(B); \
(NAME).e[_i_].v[2] = (u_long)(C); \
(NAME).e[_i_].v[3] = (u_long)(D); \
UVMHIST_PRINTNOW(&((NAME).e[_i_])); \
} while (/*CONSTCOND*/ 0)
#define UVMHIST_CALLED(NAME) \
do { \
{ \
int s = splhigh(); \
simple_lock(&(NAME).l); \
_uvmhist_call = _uvmhist_cnt++; \
simple_unlock(&(NAME).l); \
splx(s); \
} \
UVMHIST_LOG(NAME,"called!", 0, 0, 0, 0); \
} while (/*CONSTCOND*/ 0)
#define UVMHIST_FUNC(FNAME) \
static int _uvmhist_cnt = 0; \
static char *_uvmhist_name = FNAME; \
int _uvmhist_call;
static __inline void uvmhist_print __P((struct uvm_history_ent *));
static __inline void
uvmhist_print(e)
struct uvm_history_ent *e;
{
printf("%06ld.%06ld ", e->tv.tv_sec, e->tv.tv_usec);
printf("%s#%ld@%d: ", e->fn, e->call, e->cpunum);
printf(e->fmt, e->v[0], e->v[1], e->v[2], e->v[3]);
printf("\n");
}
#endif /* UVMHIST */
#endif /* _KERNEL */
#endif /* _UVM_UVM_STAT_H_ */