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Commit b54565b8 authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

s390/mm: add NUMA balancing primitives 



Define pte_protnone and pmd_protnone for NUMA memory migration.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 888d5e98

arch/s390/include/asm/pgtable.h

+13 −0
Original line number Diff line number Diff line
@@ -576,6 +576,19 @@ static inline int pte_same(pte_t a, pte_t b) 
	return pte_val(a) == pte_val(b);

}



#ifdef CONFIG_NUMA_BALANCING

static inline int pte_protnone(pte_t pte)

{

	return pte_present(pte) && !(pte_val(pte) & _PAGE_READ);

}



static inline int pmd_protnone(pmd_t pmd)

{

	/* pmd_large(pmd) implies pmd_present(pmd) */

	return pmd_large(pmd) && !(pmd_val(pmd) & _SEGMENT_ENTRY_READ);

}

#endif



static inline pgste_t pgste_get_lock(pte_t *ptep)

{

	unsigned long new = 0;