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A few changes to make it possible to read UVM histories from userland:

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- Protect option headers from inclusion if ! _KERNEL or if _LKM.
- Make sure struct uvm_history is always the same size (not dependent
  on NCPU).
- Add fmtlen and fnlen members to struct uvm_history_ent, which specify
  the lengths fo the fmt and fn strings.
- Add name, namelen, and a list entry to struct uvm_history.
- When a history is initialized, place it on the global list of all histories.
This commit is contained in:
thorpej 1998-02-13 04:55:14 +00:00
parent cb5f8ef1df
commit 872181c2f2
1 changed files with 22 additions and 3 deletions
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25
sys/uvm/uvm_stat.h
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_stat.h,v 1.8 1998/02/12 20:10:18 thorpej Exp $ */
/* $NetBSD: uvm_stat.h,v 1.9 1998/02/13 04:55:14 thorpej Exp $ */
/*
* XXXCDC: "ROUGH DRAFT" QUALITY UVM PRE-RELEASE FILE!
@ -41,7 +41,11 @@
#ifndef _UVM_UVM_STAT_H_
#define _UVM_UVM_STAT_H_
#if defined(_KERNEL) && !defined(_LKM)
#include "opt_uvmhist.h"
#endif
#include <sys/queue.h>
/*
* uvm_stat: monitor what is going on with uvm (or whatever)
@ -97,20 +101,25 @@ extern struct uvm_cnt *uvm_cnt_head;
struct uvm_history_ent {
struct timeval tv; /* time stamp */
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 */
#if NCPU > 1
simple_lock_data_t l; /* lock on this history */
#endif /* NCPU */
struct uvm_history_ent *e; /* the malloc'd entries */
};
LIST_HEAD(uvm_history_head, uvm_history);
#ifndef UVMHIST
#define UVMHIST_DECL(NAME)
#define UVMHIST_INIT(NAME,N)
@ -120,9 +129,13 @@ struct uvm_history {
#define UVMHIST_FUNC(FNAME)
#define uvmhist_dump(NAME)
#else
extern struct uvm_history_head uvm_histories;
#define UVMHIST_DECL(NAME) struct uvm_history NAME
#define UVMHIST_INIT(NAME,N) { \
(NAME).name = __STRING(NAME); \
(NAME).namelen = strlen((NAME).name); \
(NAME).n = (N); \
(NAME).f = 0; \
simple_lock_init(&(NAME).l); \
@ -130,14 +143,18 @@ struct uvm_history {
malloc(sizeof(struct uvm_history_ent) * (N), M_TEMP, \
M_WAITOK); \
bzero((NAME).e, sizeof(struct uvm_history_ent) * (N)); \
LIST_INSERT_HEAD(&uvm_histories, &(NAME), list); \
}
#define UVMHIST_INIT_STATIC(NAME,BUF) { \
(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); \
bzero((NAME).e, sizeof(struct uvm_history_ent) * (NAME).n); \
LIST_INSERT_HEAD(&uvm_histories, &(NAME), list); \
}
extern int cold;
@ -164,7 +181,9 @@ extern int uvmhist_print_enabled;
splx(s); \
if (!cold) microtime(&(NAME).e[i].tv); \
(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); \