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