Author: jhb
Date: Tue May 26 16:01:50 2009
New Revision: 192815
URL: http://svn.freebsd.org/changeset/base/192815
Log:
MFC: Reduce the number of bounce zones (and thus the number of bounce
pages) used in some cases.
Modified:
stable/7/sys/ (props changed)
stable/7/sys/amd64/amd64/busdma_machdep.c
stable/7/sys/arm/arm/busdma_machdep.c
stable/7/sys/contrib/pf/ (props changed)
stable/7/sys/dev/ath/ath_hal/ (props changed)
stable/7/sys/dev/cxgb/ (props changed)
stable/7/sys/i386/i386/busdma_machdep.c
Modified: stable/7/sys/amd64/amd64/busdma_machdep.c
==============================================================================
--- stable/7/sys/amd64/amd64/busdma_machdep.c Tue May 26 15:49:09 2009
(r192814)
+++ stable/7/sys/amd64/amd64/busdma_machdep.c Tue May 26 16:01:50 2009
(r192815)
@@ -94,7 +94,6 @@ struct bounce_zone {
int total_bounced;
int total_deferred;
bus_size_t alignment;
- bus_size_t boundary;
bus_addr_t lowaddr;
char zoneid[8];
char lowaddrid[20];
@@ -974,7 +973,6 @@ alloc_bounce_zone(bus_dma_tag_t dmat)
/* Check to see if we already have a suitable zone */
STAILQ_FOREACH(bz, &bounce_zone_list, links) {
if ((dmat->alignment <= bz->alignment)
- && (dmat->boundary <= bz->boundary)
&& (dmat->lowaddr >= bz->lowaddr)) {
dmat->bounce_zone = bz;
return (0);
@@ -990,8 +988,7 @@ alloc_bounce_zone(bus_dma_tag_t dmat)
bz->reserved_bpages = 0;
bz->active_bpages = 0;
bz->lowaddr = dmat->lowaddr;
- bz->alignment = dmat->alignment;
- bz->boundary = dmat->boundary;
+ bz->alignment = MAX(dmat->alignment, PAGE_SIZE);
snprintf(bz->zoneid, 8, "zone%d", busdma_zonecount);
busdma_zonecount++;
snprintf(bz->lowaddrid, 18, "%#jx", (uintmax_t)bz->lowaddr);
@@ -1037,9 +1034,6 @@ alloc_bounce_zone(bus_dma_tag_t dmat)
SYSCTL_ADD_INT(busdma_sysctl_tree(bz),
SYSCTL_CHILDREN(busdma_sysctl_tree_top(bz)), OID_AUTO,
"alignment", CTLFLAG_RD, &bz->alignment, 0, "");
- SYSCTL_ADD_INT(busdma_sysctl_tree(bz),
- SYSCTL_CHILDREN(busdma_sysctl_tree_top(bz)), OID_AUTO,
- "boundary", CTLFLAG_RD, &bz->boundary, 0, "");
return (0);
}
@@ -1064,7 +1058,7 @@ alloc_bounce_pages(bus_dma_tag_t dmat, u
M_NOWAIT, 0ul,
bz->lowaddr,
PAGE_SIZE,
- bz->boundary);
+ 0);
if (bpage->vaddr == 0) {
free(bpage, M_DEVBUF);
break;
Modified: stable/7/sys/arm/arm/busdma_machdep.c
==============================================================================
--- stable/7/sys/arm/arm/busdma_machdep.c Tue May 26 15:49:09 2009
(r192814)
+++ stable/7/sys/arm/arm/busdma_machdep.c Tue May 26 16:01:50 2009
(r192815)
@@ -113,7 +113,6 @@ struct bounce_zone {
int total_bounced;
int total_deferred;
bus_size_t alignment;
- bus_size_t boundary;
bus_addr_t lowaddr;
char zoneid[8];
char lowaddrid[20];
@@ -683,10 +682,10 @@ _bus_dmamap_count_pages(bus_dma_tag_t dm
vendaddr = (vm_offset_t)buf + buflen;
while (vaddr < vendaddr) {
- if (pmap != NULL)
- paddr = pmap_extract(pmap, vaddr);
- else
+ if (__predict_true(pmap == pmap_kernel()))
paddr = pmap_kextract(vaddr);
+ else
+ paddr = pmap_extract(pmap, vaddr);
if (((dmat->flags & BUS_DMA_COULD_BOUNCE) != 0) &&
run_filter(dmat, paddr) != 0)
map->pagesneeded++;
@@ -1259,7 +1258,6 @@ alloc_bounce_zone(bus_dma_tag_t dmat)
/* Check to see if we already have a suitable zone */
STAILQ_FOREACH(bz, &bounce_zone_list, links) {
if ((dmat->alignment <= bz->alignment)
- && (dmat->boundary <= bz->boundary)
&& (dmat->lowaddr >= bz->lowaddr)) {
dmat->bounce_zone = bz;
return (0);
@@ -1275,8 +1273,7 @@ alloc_bounce_zone(bus_dma_tag_t dmat)
bz->reserved_bpages = 0;
bz->active_bpages = 0;
bz->lowaddr = dmat->lowaddr;
- bz->alignment = dmat->alignment;
- bz->boundary = dmat->boundary;
+ bz->alignment = MAX(dmat->alignment, PAGE_SIZE);
snprintf(bz->zoneid, 8, "zone%d", busdma_zonecount);
busdma_zonecount++;
snprintf(bz->lowaddrid, 18, "%#jx", (uintmax_t)bz->lowaddr);
@@ -1322,9 +1319,6 @@ alloc_bounce_zone(bus_dma_tag_t dmat)
SYSCTL_ADD_INT(busdma_sysctl_tree(bz),
SYSCTL_CHILDREN(busdma_sysctl_tree_top(bz)), OID_AUTO,
"alignment", CTLFLAG_RD, &bz->alignment, 0, "");
- SYSCTL_ADD_INT(busdma_sysctl_tree(bz),
- SYSCTL_CHILDREN(busdma_sysctl_tree_top(bz)), OID_AUTO,
- "boundary", CTLFLAG_RD, &bz->boundary, 0, "");
return (0);
}
@@ -1349,7 +1343,7 @@ alloc_bounce_pages(bus_dma_tag_t dmat, u
M_NOWAIT, 0ul,
bz->lowaddr,
PAGE_SIZE,
- bz->boundary);
+ 0);
if (bpage->vaddr == 0) {
free(bpage, M_DEVBUF);
break;
Modified: stable/7/sys/i386/i386/busdma_machdep.c
==============================================================================
--- stable/7/sys/i386/i386/busdma_machdep.c Tue May 26 15:49:09 2009
(r192814)
+++ stable/7/sys/i386/i386/busdma_machdep.c Tue May 26 16:01:50 2009
(r192815)
@@ -99,7 +99,6 @@ struct bounce_zone {
int total_bounced;
int total_deferred;
bus_size_t alignment;
- bus_size_t boundary;
bus_addr_t lowaddr;
char zoneid[8];
char lowaddrid[20];
@@ -987,7 +986,6 @@ alloc_bounce_zone(bus_dma_tag_t dmat)
/* Check to see if we already have a suitable zone */
STAILQ_FOREACH(bz, &bounce_zone_list, links) {
if ((dmat->alignment <= bz->alignment)
- && (dmat->boundary <= bz->boundary)
&& (dmat->lowaddr >= bz->lowaddr)) {
dmat->bounce_zone = bz;
return (0);
@@ -1003,8 +1001,7 @@ alloc_bounce_zone(bus_dma_tag_t dmat)
bz->reserved_bpages = 0;
bz->active_bpages = 0;
bz->lowaddr = dmat->lowaddr;
- bz->alignment = dmat->alignment;
- bz->boundary = dmat->boundary;
+ bz->alignment = MAX(dmat->alignment, PAGE_SIZE);
snprintf(bz->zoneid, 8, "zone%d", busdma_zonecount);
busdma_zonecount++;
snprintf(bz->lowaddrid, 18, "%#jx", (uintmax_t)bz->lowaddr);
@@ -1050,9 +1047,6 @@ alloc_bounce_zone(bus_dma_tag_t dmat)
SYSCTL_ADD_INT(busdma_sysctl_tree(bz),
SYSCTL_CHILDREN(busdma_sysctl_tree_top(bz)), OID_AUTO,
"alignment", CTLFLAG_RD, &bz->alignment, 0, "");
- SYSCTL_ADD_INT(busdma_sysctl_tree(bz),
- SYSCTL_CHILDREN(busdma_sysctl_tree_top(bz)), OID_AUTO,
- "boundary", CTLFLAG_RD, &bz->boundary, 0, "");
return (0);
}
@@ -1077,7 +1071,7 @@ alloc_bounce_pages(bus_dma_tag_t dmat, u
M_NOWAIT, 0ul,
bz->lowaddr,
PAGE_SIZE,
- bz->boundary);
+ 0);
if (bpage->vaddr == 0) {
free(bpage, M_DEVBUF);
break;
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
