diff options
author | alc <alc@FreeBSD.org> | 2008-05-10 18:55:35 +0000 |
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committer | alc <alc@FreeBSD.org> | 2008-05-10 18:55:35 +0000 |
commit | 5a23437099f2b97c9acda670eb588825ed1f44dd (patch) | |
tree | d385d237ca987c5a7b00e1291306c60aa868cdf7 /sys/vm/vm_map.h | |
parent | 840e3ca1b5be5d79f3f4ed5f4b66a01bed910f1e (diff) | |
download | FreeBSD-src-5a23437099f2b97c9acda670eb588825ed1f44dd.zip FreeBSD-src-5a23437099f2b97c9acda670eb588825ed1f44dd.tar.gz |
Generalize vm_map_find(9)'s parameter "find_space". Specifically, add
support for VMFS_ALIGNED_SPACE, which requests the allocation of an
address range best suited to superpages. The old options TRUE and FALSE
are mapped to VMFS_ANY_SPACE and VMFS_NO_SPACE, so that there is no
immediate need to update all of vm_map_find(9)'s callers.
While I'm here, correct a misstatement about vm_map_find(9)'s return
values in the man page.
Diffstat (limited to 'sys/vm/vm_map.h')
-rw-r--r-- | sys/vm/vm_map.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/vm/vm_map.h b/sys/vm/vm_map.h index 37d9084..bc2ae43 100644 --- a/sys/vm/vm_map.h +++ b/sys/vm/vm_map.h @@ -325,6 +325,13 @@ long vmspace_wired_count(struct vmspace *vmspace); #define VM_FAULT_DIRTY 8 /* Dirty the page */ /* + * The following "find_space" options are supported by vm_map_find() + */ +#define VMFS_NO_SPACE 0 /* don't find; use the given range */ +#define VMFS_ANY_SPACE 1 /* find a range with any alignment */ +#define VMFS_ALIGNED_SPACE 2 /* find a superpage-aligned range */ + +/* * vm_map_wire and vm_map_unwire option flags */ #define VM_MAP_WIRE_SYSTEM 0 /* wiring in a kernel map */ @@ -337,7 +344,8 @@ long vmspace_wired_count(struct vmspace *vmspace); boolean_t vm_map_check_protection (vm_map_t, vm_offset_t, vm_offset_t, vm_prot_t); vm_map_t vm_map_create(pmap_t, vm_offset_t, vm_offset_t); int vm_map_delete (vm_map_t, vm_offset_t, vm_offset_t); -int vm_map_find (vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t *, vm_size_t, boolean_t, vm_prot_t, vm_prot_t, int); +int vm_map_find(vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t *, vm_size_t, + int, vm_prot_t, vm_prot_t, int); int vm_map_fixed(vm_map_t, vm_object_t, vm_ooffset_t, vm_offset_t, vm_size_t, vm_prot_t, vm_prot_t, int); int vm_map_findspace (vm_map_t, vm_offset_t, vm_size_t, vm_offset_t *); |