diff options
Diffstat (limited to 'sys/uvm/uvm.h')
| -rw-r--r-- | sys/uvm/uvm.h | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/sys/uvm/uvm.h b/sys/uvm/uvm.h index 3efcf89044c..087add79376 100644 --- a/sys/uvm/uvm.h +++ b/sys/uvm/uvm.h @@ -1,4 +1,4 @@ -/* $OpenBSD: uvm.h,v 1.32 2009/05/04 18:08:06 oga Exp $ */ +/* $OpenBSD: uvm.h,v 1.33 2009/06/01 17:42:33 ariane Exp $ */ /* $NetBSD: uvm.h,v 1.24 2000/11/27 08:40:02 chs Exp $ */ /* @@ -57,6 +57,7 @@ #include <uvm/uvm_page.h> #include <uvm/uvm_pager.h> #include <uvm/uvm_pdaemon.h> +#include <uvm/uvm_pmemrange.h> #include <uvm/uvm_swap.h> #ifdef UVM_SWAP_ENCRYPT #include <uvm/uvm_swap_encrypt.h> @@ -68,6 +69,32 @@ #include <machine/vmparam.h> /* + * UVM_IO_RANGES: paddr_t pairs, describing the lowest and highest address + * that should be reserved. These ranges (which may overlap) will have their + * use counter increased, causing them to be avoided if an allocation can be + * satisfied from another range of memory. + * + * IO ranges need not overlap with physmem ranges: the uvm code splits ranges + * on demand to satisfy requests. + * + * UVM_IO_RANGES specified here actually translates into a call to + * uvm_pmr_use_inc() at uvm initialization time. uvm_pmr_use_inc() can also + * be called after uvm_init() has completed. + * + * Note: the upper bound is specified in the same way as to uvm_pglistalloc. + * Ex: a memory range of 16 bit is specified as: { 0, 0xffff }. + */ +#ifndef UVM_IO_RANGES +#define UVM_IO_RANGES {} +#endif + +/* UVM IO ranges are described in an array of uvm_io_ranges. */ +struct uvm_io_ranges { + paddr_t low; + paddr_t high; +}; + +/* * uvm structure (vm global state: collected in one structure for ease * of reference...) */ @@ -76,7 +103,7 @@ struct uvm { /* vm_page related parameters */ /* vm_page queues */ - struct pgfreelist page_free[VM_NFREELIST]; /* unallocated pages */ + struct uvm_pmr_control pmr_control; /* pmemrange control data */ struct pglist page_active; /* allocated pages, in use */ struct pglist page_inactive_swp;/* pages inactive (reclaim or free) */ struct pglist page_inactive_obj;/* pages inactive (reclaim or free) */ |