| zone.9 (213910) | zone.9 (213911) |
|---|---|
| 1.\"- 2.\" Copyright (c) 2001 Dag-Erling Co�dan Sm�rgrav 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" | 1.\"- 2.\" Copyright (c) 2001 Dag-Erling Co�dan Sm�rgrav 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" |
| 26.\" $FreeBSD: head/share/man/man9/zone.9 213910 2010-10-16 04:14:45Z lstewart $ | 26.\" $FreeBSD: head/share/man/man9/zone.9 213911 2010-10-16 04:41:45Z lstewart $ |
| 27.\" 28.Dd October 9, 2010 29.Dt ZONE 9 30.Os 31.Sh NAME 32.Nm uma_zcreate , 33.Nm uma_zalloc , 34.Nm uma_zalloc_arg , --- 19 unchanged lines hidden (view full) --- 54.Ft "void *" 55.Fn uma_zalloc_arg "uma_zone_t zone" "void *arg" "int flags" 56.Ft void 57.Fn uma_zfree "uma_zone_t zone" "void *item" 58.Ft void 59.Fn uma_zfree_arg "uma_zone_t zone" "void *item" "void *arg" 60.Ft void 61.Fn uma_zdestroy "uma_zone_t zone" | 27.\" 28.Dd October 9, 2010 29.Dt ZONE 9 30.Os 31.Sh NAME 32.Nm uma_zcreate , 33.Nm uma_zalloc , 34.Nm uma_zalloc_arg , --- 19 unchanged lines hidden (view full) --- 54.Ft "void *" 55.Fn uma_zalloc_arg "uma_zone_t zone" "void *arg" "int flags" 56.Ft void 57.Fn uma_zfree "uma_zone_t zone" "void *item" 58.Ft void 59.Fn uma_zfree_arg "uma_zone_t zone" "void *item" "void *arg" 60.Ft void 61.Fn uma_zdestroy "uma_zone_t zone" |
| 62.Ft void | 62.Ft int |
| 63.Fn uma_zone_set_max "uma_zone_t zone" "int nitems" 64.Ft int 65.Fn uma_zone_get_max "uma_zone_t zone" 66.Ft int 67.Fn uma_zone_get_cur "uma_zone_t zone" 68.Sh DESCRIPTION 69The zone allocator provides an efficient interface for managing 70dynamically-sized collections of items of similar size. --- 109 unchanged lines hidden (view full) --- 180.Fn uma_zone_set_max 181function limits the number of items 182.Pq and therefore memory 183that can be allocated to 184.Fa zone . 185The 186.Fa nitems 187argument specifies the requested upper limit number of items. | 63.Fn uma_zone_set_max "uma_zone_t zone" "int nitems" 64.Ft int 65.Fn uma_zone_get_max "uma_zone_t zone" 66.Ft int 67.Fn uma_zone_get_cur "uma_zone_t zone" 68.Sh DESCRIPTION 69The zone allocator provides an efficient interface for managing 70dynamically-sized collections of items of similar size. --- 109 unchanged lines hidden (view full) --- 180.Fn uma_zone_set_max 181function limits the number of items 182.Pq and therefore memory 183that can be allocated to 184.Fa zone . 185The 186.Fa nitems 187argument specifies the requested upper limit number of items. |
| 188The effective limit may end up being higher than requested, as the 189implementation will round up to ensure all memory pages allocated to the zone 190are utilised to capacity. | 188The effective limit is returned to the caller, as it may end up being higher 189than requested due to the implementation rounding up to ensure all memory pages 190allocated to the zone are utilised to capacity. |
| 191The limit applies to the total number of items in the zone, which includes 192allocated items, free items and free items in the per-cpu caches. 193On systems with more than one CPU it may not be possible to allocate 194the specified number of items even when there is no shortage of memory, 195because all of the remaining free items may be in the caches of the 196other CPUs when the limit is hit. 197.Pp 198The --- 37 unchanged lines hidden --- | 191The limit applies to the total number of items in the zone, which includes 192allocated items, free items and free items in the per-cpu caches. 193On systems with more than one CPU it may not be possible to allocate 194the specified number of items even when there is no shortage of memory, 195because all of the remaining free items may be in the caches of the 196other CPUs when the limit is hit. 197.Pp 198The --- 37 unchanged lines hidden --- |