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author | Jeff Roberson <jeff@FreeBSD.org> | 2019-08-16 00:45:14 +0000 |
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committer | Jeff Roberson <jeff@FreeBSD.org> | 2019-08-16 00:45:14 +0000 |
commit | 2194393787801f71cea02463d999fbc1071790fc (patch) | |
tree | b7b2c583734007529b2eb3e24f3cf506dd3599e6 /sys/vm/vm_phys.c | |
parent | ccfbff6d592ecb89e9d2195a68d66d691e219b9a (diff) | |
download | src-2194393787801f71cea02463d999fbc1071790fc.tar.gz src-2194393787801f71cea02463d999fbc1071790fc.zip |
Move phys_avail definition into MI code. It is consumed in the MI layer and
doing so adds more flexibility with less redundant code.
Reviewed by: jhb, markj, kib
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D21250
Notes
Notes:
svn path=/head/; revision=351108
Diffstat (limited to 'sys/vm/vm_phys.c')
-rw-r--r-- | sys/vm/vm_phys.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sys/vm/vm_phys.c b/sys/vm/vm_phys.c index c16282974a40..49cba32ca576 100644 --- a/sys/vm/vm_phys.c +++ b/sys/vm/vm_phys.c @@ -111,6 +111,24 @@ static struct vm_freelist __aligned(CACHE_LINE_SIZE) static int __read_mostly vm_nfreelists; /* + * These "avail lists" are globals used to communicate boot-time physical + * memory layout to other parts of the kernel. Each physically contiguous + * region of memory is defined by a start address at an even index and an + * end address at the following odd index. Each list is terminated by a + * pair of zero entries. + * + * dump_avail tells the dump code what regions to include in a crash dump, and + * phys_avail is all of the remaining physical memory that is available for + * the vm system. + * + * Initially dump_avail and phys_avail are identical. Boot time memory + * allocations remove extents from phys_avail that may still be included + * in dumps. + */ +vm_paddr_t phys_avail[PHYS_AVAIL_COUNT]; +vm_paddr_t dump_avail[PHYS_AVAIL_COUNT]; + +/* * Provides the mapping from VM_FREELIST_* to free list indices (flind). */ static int __read_mostly vm_freelist_to_flind[VM_NFREELIST]; |