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head/sys/vm/vm_dumpset.h
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
| * | |||||
| * Copyright (c) 2020, Scott Phillips <scottph@freebsd.org> | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice unmodified, this list of conditions, and the following | |||||
| * disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |||||
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |||||
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |||||
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |||||
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |||||
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |||||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |||||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |||||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |||||
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |||||
| * | |||||
| * $FreeBSD$ | |||||
| */ | |||||
| #ifndef _SYS_DUMPSET_H_ | |||||
| #define _SYS_DUMPSET_H_ | |||||
| #include <sys/_bitset.h> | |||||
| #include <sys/bitset.h> | |||||
| extern struct bitset *vm_page_dump; | |||||
| extern long vm_page_dump_pages; | |||||
| extern vm_paddr_t dump_avail[PHYS_AVAIL_COUNT]; | |||||
| static inline void | |||||
| dump_add_page(vm_paddr_t pa) | |||||
| { | |||||
| vm_pindex_t adj; | |||||
| int i; | |||||
| adj = 0; | |||||
| for (i = 0; dump_avail[i + 1] != 0; i += 2) { | |||||
| if (pa >= dump_avail[i] && pa < dump_avail[i + 1]) { | |||||
| BIT_SET_ATOMIC(vm_page_dump_pages, | |||||
| (pa >> PAGE_SHIFT) - (dump_avail[i] >> PAGE_SHIFT) + | |||||
| adj, vm_page_dump); | |||||
| return; | |||||
| } | |||||
| adj += howmany(dump_avail[i + 1], PAGE_SIZE) - | |||||
| dump_avail[i] / PAGE_SIZE; | |||||
| } | |||||
| } | |||||
| static inline void | |||||
| dump_drop_page(vm_paddr_t pa) | |||||
| { | |||||
| vm_pindex_t adj; | |||||
| int i; | |||||
| adj = 0; | |||||
| for (i = 0; dump_avail[i + 1] != 0; i += 2) { | |||||
| if (pa >= dump_avail[i] && pa < dump_avail[i + 1]) { | |||||
| BIT_CLR_ATOMIC(vm_page_dump_pages, | |||||
| (pa >> PAGE_SHIFT) - (dump_avail[i] >> PAGE_SHIFT) + | |||||
| adj, vm_page_dump); | |||||
| return; | |||||
| } | |||||
| adj += howmany(dump_avail[i + 1], PAGE_SIZE) - | |||||
| dump_avail[i] / PAGE_SIZE; | |||||
| } | |||||
| } | |||||
| static inline vm_paddr_t | |||||
| vm_page_dump_index_to_pa(int bit) | |||||
| { | |||||
| int i, tot; | |||||
| for (i = 0; dump_avail[i + 1] != 0; i += 2) { | |||||
| tot = howmany(dump_avail[i + 1], PAGE_SIZE) - | |||||
| dump_avail[i] / PAGE_SIZE; | |||||
| if (bit < tot) | |||||
| return ((vm_paddr_t)bit * PAGE_SIZE + | |||||
| (dump_avail[i] & ~PAGE_MASK)); | |||||
| bit -= tot; | |||||
| } | |||||
| return ((vm_paddr_t)NULL); | |||||
| } | |||||
| #define VM_PAGE_DUMP_FOREACH(pa) \ | |||||
| for (vm_pindex_t __b = BIT_FFS(vm_page_dump_pages, vm_page_dump); \ | |||||
| (pa) = vm_page_dump_index_to_pa(__b - 1), __b != 0; \ | |||||
| __b = BIT_FFS_AT(vm_page_dump_pages, vm_page_dump, __b)) | |||||
| #endif /* _SYS_DUMPSET_H_ */ | |||||