203 lines
6.3 KiB
C
203 lines
6.3 KiB
C
/* $NetBSD: uvm_stat.h,v 1.47 2010/07/07 01:08:51 chs Exp $ */
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/*
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*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles D. Cranor and
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* Washington University.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: Id: uvm_stat.h,v 1.1.2.4 1998/02/07 01:16:56 chs Exp
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*/
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#ifndef _UVM_UVM_STAT_H_
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#define _UVM_UVM_STAT_H_
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#if defined(_KERNEL_OPT)
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#include "opt_uvmhist.h"
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#endif
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#include <sys/queue.h>
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#ifdef UVMHIST
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#include <sys/cpu.h>
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#include <sys/malloc.h>
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#endif
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/*
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* uvm_stat: monitor what is going on with uvm (or whatever)
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*/
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/*
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* history/tracing
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*/
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struct uvm_history_ent {
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struct timeval tv; /* time stamp */
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int cpunum;
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const char *fmt; /* printf format */
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size_t fmtlen; /* length of printf format */
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const char *fn; /* function name */
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size_t fnlen; /* length of function name */
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u_long call; /* function call number */
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u_long v[4]; /* values */
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};
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struct uvm_history {
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const char *name; /* name of this history */
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size_t namelen; /* length of name, not including null */
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LIST_ENTRY(uvm_history) list; /* link on list of all histories */
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unsigned int n; /* number of entries */
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unsigned int f; /* next free one */
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struct uvm_history_ent *e; /* the malloc'd entries */
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};
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LIST_HEAD(uvm_history_head, uvm_history);
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/*
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* grovelling lists all at once. we currently do not allow more than
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* 32 histories to exist, as the way to dump a number of them at once
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* is by calling uvm_hist() with a bitmask.
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*/
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/* this is used to set the size of some arrays */
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#define MAXHISTS 32 /* do not change this! */
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/* and these are the bit values of each history */
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#define UVMHIST_MAPHIST 0x00000001 /* maphist */
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#define UVMHIST_PDHIST 0x00000002 /* pdhist */
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#define UVMHIST_UBCHIST 0x00000004 /* ubchist */
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#define UVMHIST_LOANHIST 0x00000008 /* loanhist */
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#ifdef _KERNEL
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/*
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* macros to use the history/tracing code. note that UVMHIST_LOG
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* must take 4 arguments (even if they are ignored by the format).
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*/
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#ifndef UVMHIST
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#define UVMHIST_DECL(NAME)
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#define UVMHIST_INIT(NAME,N)
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#define UVMHIST_INIT_STATIC(NAME,BUF)
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#define UVMHIST_LOG(NAME,FMT,A,B,C,D)
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#define UVMHIST_CALLED(NAME)
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#define UVMHIST_FUNC(FNAME)
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#define uvmhist_dump(NAME)
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#else
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#include <sys/kernel.h> /* for "cold" variable */
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#include <sys/atomic.h>
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extern struct uvm_history_head uvm_histories;
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#define UVMHIST_DECL(NAME) struct uvm_history NAME
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#define UVMHIST_INIT(NAME,N) \
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do { \
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(NAME).name = __STRING(NAME); \
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(NAME).namelen = strlen(__STRING(NAME)); \
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(NAME).n = (N); \
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(NAME).f = 0; \
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(NAME).e = (struct uvm_history_ent *) \
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malloc(sizeof(struct uvm_history_ent) * (N), M_TEMP, \
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M_WAITOK); \
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memset((NAME).e, 0, sizeof(struct uvm_history_ent) * (N)); \
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LIST_INSERT_HEAD(&uvm_histories, &(NAME), list); \
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} while (/*CONSTCOND*/ 0)
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#define UVMHIST_INIT_STATIC(NAME,BUF) \
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do { \
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(NAME).name = __STRING(NAME); \
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(NAME).namelen = strlen(__STRING(NAME)); \
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(NAME).n = sizeof(BUF) / sizeof(struct uvm_history_ent); \
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(NAME).f = 0; \
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(NAME).e = (struct uvm_history_ent *) (BUF); \
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memset((NAME).e, 0, sizeof(struct uvm_history_ent) * (NAME).n); \
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LIST_INSERT_HEAD(&uvm_histories, &(NAME), list); \
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} while (/*CONSTCOND*/ 0)
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#if defined(UVMHIST_PRINT)
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extern int uvmhist_print_enabled;
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#define UVMHIST_PRINTNOW(E) \
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do { \
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if (uvmhist_print_enabled) { \
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uvmhist_entry_print(E); \
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DELAY(100000); \
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} \
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} while (/*CONSTCOND*/ 0)
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#else
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#define UVMHIST_PRINTNOW(E) /* nothing */
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#endif
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#define UVMHIST_LOG(NAME,FMT,A,B,C,D) \
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do { \
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unsigned int _i_, _j_; \
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do { \
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_i_ = (NAME).f; \
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_j_ = (_i_ + 1 < (NAME).n) ? _i_ + 1 : 0; \
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} while (atomic_cas_uint(&(NAME).f, _i_, _j_) != _i_); \
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if (!cold) \
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microtime(&(NAME).e[_i_].tv); \
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(NAME).e[_i_].cpunum = cpu_number(); \
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(NAME).e[_i_].fmt = (FMT); \
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(NAME).e[_i_].fmtlen = strlen(FMT); \
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(NAME).e[_i_].fn = _uvmhist_name; \
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(NAME).e[_i_].fnlen = strlen(_uvmhist_name); \
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(NAME).e[_i_].call = _uvmhist_call; \
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(NAME).e[_i_].v[0] = (u_long)(A); \
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(NAME).e[_i_].v[1] = (u_long)(B); \
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(NAME).e[_i_].v[2] = (u_long)(C); \
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(NAME).e[_i_].v[3] = (u_long)(D); \
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UVMHIST_PRINTNOW(&((NAME).e[_i_])); \
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} while (/*CONSTCOND*/ 0)
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#define UVMHIST_CALLED(NAME) \
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do { \
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_uvmhist_call = atomic_inc_uint_nv(&_uvmhist_cnt); \
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UVMHIST_LOG(NAME,"called!", 0, 0, 0, 0); \
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} while (/*CONSTCOND*/ 0)
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#define UVMHIST_FUNC(FNAME) \
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static unsigned int _uvmhist_cnt = 0; \
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static const char *const _uvmhist_name = FNAME; \
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int _uvmhist_call;
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static inline void uvmhist_entry_print(struct uvm_history_ent *);
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static inline void
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uvmhist_entry_print(e)
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struct uvm_history_ent *e;
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{
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printf("%06" PRIu64 ".%06d ", e->tv.tv_sec, e->tv.tv_usec);
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printf("%s#%ld@%d: ", e->fn, e->call, e->cpunum);
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printf(e->fmt, e->v[0], e->v[1], e->v[2], e->v[3]);
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printf("\n");
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}
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#endif /* UVMHIST */
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#endif /* _KERNEL */
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#endif /* _UVM_UVM_STAT_H_ */
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