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remove locking from UVMCNT counters. 

they don't need to be exact, and the locking causes problems
in some of places they're used.
This commit is contained in:
chs 1998-02-07 02:16:52 +00:00
parent d7d62b7ad3
commit 1f583a43b1
1 changed files with 2 additions and 11 deletions
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13
sys/uvm/uvm_stat.h
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_stat.h,v 1.2 1998/02/06 22:32:28 thorpej Exp $ */
/* $NetBSD: uvm_stat.h,v 1.3 1998/02/07 02:16:52 chs Exp $ */
/*
* XXXCDC: "ROUGH DRAFT" QUALITY UVM PRE-RELEASE FILE!
@ -50,9 +50,6 @@
struct uvm_cnt {
int c; /* the value */
int t; /* type */
#if NCPU > 1
simple_lock_data_t l; /* lock on this counter */
#endif /* NCPU */
struct uvm_cnt *next; /* global list of cnts */
char *name; /* counter name */
void *p; /* private data */
@ -61,14 +58,12 @@ struct uvm_cnt {
extern struct uvm_cnt *uvm_cnt_head;
/*
* counter operations. note simple_locks compiles out if NCPU == 1.
* assume spl is set ok.
* counter operations. assume spl is set ok.
*/
#define UVMCNT_INIT(CNT,TYP,VAL,NAM,PRIV) { \
CNT.c = VAL; \
CNT.t = TYP; \
simple_lock_init(&CNT.l); \
CNT.next = uvm_cnt_head; \
uvm_cnt_head = &CNT; \
CNT.name = NAM; \
@ -76,15 +71,11 @@ extern struct uvm_cnt *uvm_cnt_head;
}
#define UVMCNT_SET(C,V) { \
simple_lock(&(C).l); \
(C).c = (V); \
simple_unlock(&(C).l); \
}
#define UVMCNT_ADD(C,V) { \
simple_lock(&(C).l); \
(C).c += (V); \
simple_unlock(&(C).l); \
}
#define UVMCNT_INCR(C) UVMCNT_ADD(C,1)