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Instrument success/faulure of phyisically contiguous uarea allocation.

This commit is contained in:
thorpej 2021-07-16 19:13:21 +00:00
parent 2d9a5a589e
commit 7550fba125
1 changed files with 14 additions and 3 deletions
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17
sys/arch/alpha/alpha/vm_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: vm_machdep.c,v 1.120 2021/07/06 12:20:52 thorpej Exp $ */
/* $NetBSD: vm_machdep.c,v 1.121 2021/07/16 19:13:21 thorpej Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@ -29,7 +29,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.120 2021/07/06 12:20:52 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.121 2021/07/16 19:13:21 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -248,6 +248,14 @@ vunmapbuf(struct buf *bp, vsize_t len)
}
#ifdef __HAVE_CPU_UAREA_ROUTINES
static struct evcnt uarea_direct_success =
EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "uarea direct", "success");
static struct evcnt uarea_direct_failure =
EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "uarea direct", "failure");
EVCNT_ATTACH_STATIC(uarea_direct_success);
EVCNT_ATTACH_STATIC(uarea_direct_failure);
void *
cpu_uarea_alloc(bool system)
{
@ -259,8 +267,11 @@ cpu_uarea_alloc(bool system)
* direct-mapped.
*/
error = uvm_pglistalloc(USPACE, 0, ptoa(physmem), 0, 0, &pglist, 1, 1);
if (error)
if (error) {
atomic_inc_ulong(&uarea_direct_failure.ev_count);
return NULL;
}
atomic_inc_ulong(&uarea_direct_success.ev_count);
/*
* Get the physical address from the first page.