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Turn bounce buffer stats into evcnts and enable them by default.

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This commit is contained in:
thorpej 2005-09-20 04:48:10 +00:00
parent f38e8b27b1
commit 5d49661ebb
1 changed files with 23 additions and 13 deletions
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36
sys/arch/x86/x86/bus_dma.c
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@ -1,4 +1,4 @@
/* $NetBSD: bus_dma.c,v 1.23 2005/08/22 11:09:39 bouyer Exp $ */
/* $NetBSD: bus_dma.c,v 1.24 2005/09/20 04:48:10 thorpej Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bus_dma.c,v 1.23 2005/08/22 11:09:39 bouyer Exp $");
__KERNEL_RCSID(0, "$NetBSD: bus_dma.c,v 1.24 2005/09/20 04:48:10 thorpej Exp $");
/*
* The following is included because _bus_dma_uiomove is derived from
@ -119,12 +119,22 @@ extern paddr_t avail_end;
typedef void (vector) __P((void));
extern vector *IDTVEC(intr)[];
#define BUSDMA_BOUNCESTATS
#ifdef BUSDMA_BOUNCESTATS
int bus_dma_stats_nbouncebufs;
int bus_dma_stats_loads;
int bus_dma_stats_bounces;
#define STAT_INCR(x) (x)++
#define STAT_DECR(x) (x)++
#define BUSDMA_EVCNT_DECL(name) \
static struct evcnt bus_dma_ev_##name = \
EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "bus_dma", #name); \
EVCNT_ATTACH_STATIC(bus_dma_ev_##name)
#define STAT_INCR(name) \
bus_dma_ev_##name.ev_count++
#define STAT_DECR(name) \
bus_dma_ev_##name.ev_count--
BUSDMA_EVCNT_DECL(nbouncebufs);
BUSDMA_EVCNT_DECL(loads);
BUSDMA_EVCNT_DECL(bounces);
#else
#define STAT_INCR(x)
#define STAT_DECR(x)
@ -318,7 +328,7 @@ _bus_dmamap_load(bus_dma_tag_t t, bus_dmamap_t map, void *buf,
struct x86_bus_dma_cookie *cookie = map->_dm_cookie;
int error;
STAT_INCR(bus_dma_stats_loads);
STAT_INCR(loads);
/*
* Make sure that on error condition we return "no valid mappings."
@ -346,7 +356,7 @@ _bus_dmamap_load(bus_dma_tag_t t, bus_dmamap_t map, void *buf,
* First attempt failed; bounce it.
*/
STAT_INCR(bus_dma_stats_bounces);
STAT_INCR(bounces);
/*
* Allocate bounce pages, if necessary.
@ -543,7 +553,7 @@ _bus_dmamap_load_mbuf(bus_dma_tag_t t, bus_dmamap_t map, struct mbuf *m0,
* First attempt failed; bounce it.
*/
STAT_INCR(bus_dma_stats_bounces);
STAT_INCR(bounces);
/*
* Allocate bounce pages, if necessary.
@ -629,7 +639,7 @@ _bus_dmamap_load_uio(bus_dma_tag_t t, bus_dmamap_t map, struct uio *uio,
((cookie->id_flags & X86_DMA_MIGHT_NEED_BOUNCE) == 0))
return error;
STAT_INCR(bus_dma_stats_bounces);
STAT_INCR(bounces);
/*
* Allocate bounce pages, if necessary.
@ -894,7 +904,7 @@ _bus_dma_alloc_bouncebuf(bus_dma_tag_t t, bus_dmamap_t map,
cookie->id_nbouncesegs = 0;
} else {
cookie->id_flags |= X86_DMA_HAS_BOUNCE;
STAT_INCR(bus_dma_stats_nbouncebufs);
STAT_INCR(nbouncebufs);
}
return (error);
@ -910,7 +920,7 @@ _bus_dma_free_bouncebuf(bus_dma_tag_t t, bus_dmamap_t map)
panic("_bus_dma_alloc_bouncebuf: no cookie");
#endif
STAT_DECR(bus_dma_stats_nbouncebufs);
STAT_DECR(nbouncebufs);
_bus_dmamem_unmap(t, cookie->id_bouncebuf, cookie->id_bouncebuflen);
_bus_dmamem_free(t, cookie->id_bouncesegs,