Date: Thu, 23 Jul 2009 22:17:58 GMT From: Andre Oppermann <andre@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 166481 for review Message-ID: <200907232217.n6NMHwPv095150@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=166481 Change 166481 by andre@andre_t61 on 2009/07/23 22:17:46 Add uma_zone_get_max() reporting the actual rounded up maximum of items in a zone (if limited by uma_zone_set_max). Affected files ... .. //depot/projects/tcp_reass/vm/uma.h#5 edit .. //depot/projects/tcp_reass/vm/uma_core.c#6 edit Differences ... ==== //depot/projects/tcp_reass/vm/uma.h#5 (text+ko) ==== @@ -451,7 +451,8 @@ * Sets a high limit on the number of items allowed in a zone * * Arguments: - * zone The zone to limit + * zone The zone to limit + * nitems The maximum number of items (will be rounded up to slab (page) size) * * Returns: * Nothing @@ -459,6 +460,18 @@ void uma_zone_set_max(uma_zone_t zone, int nitems); /* + * Returns the high limit on the number of items allowed in a zone + * + * Arguments: + * zone The zone to report + * + * Returns: + * 0 unlimited + * >0 The effective maximum number of items allowed + */ +int uma_zone_get_max(uma_zone_t zone); + +/* * The following two routines (uma_zone_set_init/fini) * are used to set the backend init/fini pair which acts on an * object as it becomes allocated and is placed in a slab within ==== //depot/projects/tcp_reass/vm/uma_core.c#6 (text+ko) ==== @@ -2799,6 +2799,24 @@ } /* See uma.h */ +int +uma_zone_get_max(uma_zone_t zone) +{ + int items; + uma_keg_t keg; + + ZONE_LOCK(zone); + keg = zone_first_keg(zone); + if (keg->uk_maxpages > 0) + items = keg->uk_maxpages * keg->uk_ipers; + else + items = 0; + ZONE_UNLOCK(zone); + + return (items); +} + +/* See uma.h */ void uma_zone_set_init(uma_zone_t zone, uma_init uminit) {
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