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uvm_physseg: cluster fields used during RB tree lookup for PHYS_TO_VM_PAGE().

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ad 2020-03-15 21:06:30 +00:00
parent e3d221ef2a
commit 9887ecbe68
1 changed files with 7 additions and 4 deletions
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11
sys/uvm/uvm_physseg.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_physseg.c,v 1.13 2019/12/21 14:41:44 ad Exp $ */
/* $NetBSD: uvm_physseg.c,v 1.14 2020/03/15 21:06:30 ad Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -87,12 +87,15 @@
* uvm_physseg: describes one segment of physical memory
*/
struct uvm_physseg {
/* used during RB tree lookup for PHYS_TO_VM_PAGE(). */
struct rb_node rb_node; /* tree information */
paddr_t start; /* PF# of first page in segment */
paddr_t end; /* (PF# of last page in segment) + 1 */
struct vm_page *pgs; /* vm_page structures (from start) */
/* less performance sensitive fields. */
paddr_t avail_start; /* PF# of first free page in segment */
paddr_t avail_end; /* (PF# of last free page in segment) +1 */
struct vm_page *pgs; /* vm_page structures (from start) */
struct extent *ext; /* extent(9) structure to manage pgs[] */
int free_list; /* which free list they belong on */
u_int start_hint; /* start looking for free pages here */
@ -121,9 +124,9 @@ struct vm_page *uvm_physseg_seg_alloc_from_slab(uvm_physseg_t, size_t);
struct uvm_physseg_graph {
struct rb_tree rb_tree; /* Tree for entries */
int nentries; /* Number of entries */
};
} __aligned(COHERENCY_UNIT);
static struct uvm_physseg_graph uvm_physseg_graph;
static struct uvm_physseg_graph uvm_physseg_graph __read_mostly;
/*
* Note on kmem(9) allocator usage: