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Collect vmcmd statistics.

This commit is contained in:
thorpej 2005-07-06 23:08:57 +00:00
parent de124326cb
commit f44b62c49d
1 changed files with 23 additions and 8 deletions
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31
sys/kern/exec_subr.c
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@ -1,4 +1,4 @@
/* $NetBSD: exec_subr.c,v 1.44 2005/05/29 22:24:14 christos Exp $ */
/* $NetBSD: exec_subr.c,v 1.45 2005/07/06 23:08:57 thorpej Exp $ */
/*
* Copyright (c) 1993, 1994, 1996 Christopher G. Demetriou
@ -31,7 +31,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: exec_subr.c,v 1.44 2005/05/29 22:24:14 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: exec_subr.c,v 1.45 2005/07/06 23:08:57 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -42,13 +42,21 @@ __KERNEL_RCSID(0, "$NetBSD: exec_subr.c,v 1.44 2005/05/29 22:24:14 christos Exp
#include <sys/exec.h>
#include <sys/mman.h>
#include <sys/resourcevar.h>
#include <sys/device.h>
#include <uvm/uvm.h>
/*
* XXX cgd 960926: this module should collect simple statistics
* (calls, extends, kills).
*/
#define VMCMD_EVCNT_DECL(name) \
static struct evcnt vmcmd_ev_##name = \
EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "vmcmd", #name); \
EVCNT_ATTACH_STATIC(vmcmd_ev_##name)
#define VMCMD_EVCNT_INCR(name) \
vmcmd_ev_##name.ev_count++
VMCMD_EVCNT_DECL(calls);
VMCMD_EVCNT_DECL(extends);
VMCMD_EVCNT_DECL(kills);
/*
* new_vmcmd():
@ -65,6 +73,8 @@ new_vmcmd(struct exec_vmcmd_set *evsp,
{
struct exec_vmcmd *vcp;
VMCMD_EVCNT_INCR(calls);
if (evsp->evs_used >= evsp->evs_cnt)
vmcmdset_extend(evsp);
vcp = &evsp->evs_cmds[evsp->evs_used++];
@ -90,8 +100,11 @@ vmcmdset_extend(struct exec_vmcmd_set *evsp)
#endif
/* figure out number of entries in new set */
ocnt = evsp->evs_cnt;
evsp->evs_cnt += ocnt ? ocnt : EXEC_DEFAULT_VMCMD_SETSIZE;
if ((ocnt = evsp->evs_cnt) != 0) {
evsp->evs_cnt += ocnt;
VMCMD_EVCNT_INCR(extends);
} else
evsp->evs_cnt = EXEC_DEFAULT_VMCMD_SETSIZE;
/* allocate it */
nvcp = malloc(evsp->evs_cnt * sizeof(struct exec_vmcmd),
@ -112,6 +125,8 @@ kill_vmcmds(struct exec_vmcmd_set *evsp)
struct exec_vmcmd *vcp;
u_int i;
VMCMD_EVCNT_INCR(kills);
if (evsp->evs_cnt == 0)
return;