Date: Tue, 9 Apr 2013 15:15:52 +0000 (UTC) From: Gleb Smirnoff <glebius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r249309 - head/sys/vm Message-ID: <201304091515.r39FFq0V043945@svn.freebsd.org>
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Author: glebius Date: Tue Apr 9 15:15:52 2013 New Revision: 249309 URL: http://svnweb.freebsd.org/changeset/base/249309 Log: Since now we support 256 items per slab, we need more bits for us_freecount. This grows uma_slab_head on 32-bit arches, but growth isn't significant. Taking kmem zones as example, only the 32 byte zone is affected, ipers is reduced from 113 to 112. In collaboration with: kib Modified: head/sys/vm/uma_int.h Modified: head/sys/vm/uma_int.h ============================================================================== --- head/sys/vm/uma_int.h Tue Apr 9 13:16:11 2013 (r249308) +++ head/sys/vm/uma_int.h Tue Apr 9 15:15:52 2013 (r249309) @@ -246,7 +246,7 @@ struct uma_slab_head { SLIST_ENTRY(uma_slab) us_hlink; /* Link for hash table */ u_int8_t *us_data; /* First item */ u_int8_t us_flags; /* Page flags see uma.h */ - u_int8_t us_freecount; /* How many are free? */ + u_int16_t us_freecount; /* How many are free? */ u_int8_t us_firstfree; /* First free item index */ };
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