Align and pad the page queue and free page queue locks so that the linker
can't possibly place them together within the same cache line. MFC after: 3 weeks
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parent
a7835d5578
commit
e67e0775e6
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=197750
@ -135,8 +135,8 @@ __FBSDID("$FreeBSD$");
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*/
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struct vpgqueues vm_page_queues[PQ_COUNT];
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struct mtx vm_page_queue_mtx;
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struct mtx vm_page_queue_free_mtx;
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struct vpglocks vm_page_queue_lock;
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struct vpglocks vm_page_queue_free_lock;
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vm_page_t vm_page_array = 0;
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int vm_page_array_size = 0;
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@ -170,7 +170,15 @@ struct vpgqueues {
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};
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extern struct vpgqueues vm_page_queues[PQ_COUNT];
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extern struct mtx vm_page_queue_free_mtx;
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struct vpglocks {
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struct mtx data;
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char pad[CACHE_LINE_SIZE - sizeof(struct mtx)];
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} __aligned(CACHE_LINE_SIZE);
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extern struct vpglocks vm_page_queue_free_lock;
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#define vm_page_queue_free_mtx vm_page_queue_free_lock.data
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/*
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* These are the flags defined for vm_page.
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@ -258,7 +266,9 @@ PHYS_TO_VM_PAGE(vm_paddr_t pa)
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#endif
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}
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extern struct mtx vm_page_queue_mtx;
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extern struct vpglocks vm_page_queue_lock;
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#define vm_page_queue_mtx vm_page_queue_lock.data
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#define vm_page_lock_queues() mtx_lock(&vm_page_queue_mtx)
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#define vm_page_unlock_queues() mtx_unlock(&vm_page_queue_mtx)
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