Date: Sat, 2 Nov 2013 17:08:21 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r257549 - head/sys/arm/include Message-ID: <201311021708.rA2H8LoJ062396@svn.freebsd.org>
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Author: alc Date: Sat Nov 2 17:08:20 2013 New Revision: 257549 URL: http://svnweb.freebsd.org/changeset/base/257549 Log: Don't create a distinct free page pool for segregating allocations that are accessed through the direct map unless the kernel configuration actually includes a direct map. Only a few configurations do, and for the rest the unnecessary free page pool is a small pessimization. Tested by: zbb MFC after: 6 weeks Modified: head/sys/arm/include/vmparam.h Modified: head/sys/arm/include/vmparam.h ============================================================================== --- head/sys/arm/include/vmparam.h Sat Nov 2 15:13:02 2013 (r257548) +++ head/sys/arm/include/vmparam.h Sat Nov 2 17:08:20 2013 (r257549) @@ -82,15 +82,21 @@ #define VM_PHYSSEG_DENSE /* - * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool - * from which physical pages are allocated and VM_FREEPOOL_DIRECT is - * the pool from which physical pages for small UMA objects are - * allocated. + * Create two or three free page pools depending on the existence of a direct + * map: VM_FREEPOOL_DEFAULT is the default pool from which physical pages are + * allocated, and VM_FREEPOOL_DIRECT is the pool from which physical pages for + * small UMA objects are allocated. */ +#ifdef ARM_USE_SMALL_ALLOC #define VM_NFREEPOOL 3 #define VM_FREEPOOL_CACHE 2 -#define VM_FREEPOOL_DEFAULT 0 #define VM_FREEPOOL_DIRECT 1 +#else +#define VM_NFREEPOOL 2 +#define VM_FREEPOOL_CACHE 1 +#define VM_FREEPOOL_DIRECT 0 +#endif +#define VM_FREEPOOL_DEFAULT 0 /* * we support 2 free lists:
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