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Commit 56166230 authored by Ganapatrao Kulkarni's avatar Ganapatrao Kulkarni Committed by Will Deacon
Browse files

arm64, mm, numa: Add NUMA balancing support for arm64. 



Enable NUMA balancing for arm64 platforms.
Add pte, pmd protnone helpers for use by automatic NUMA balancing.

Reviewed-by: default avatarSteve Capper <steve.capper@arm.com>
Reviewed-by: default avatarRobert Richter <rrichter@cavium.com>
Signed-off-by: default avatarGanapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Signed-off-by: default avatarDavid Daney <david.daney@cavium.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 1a2db300

arch/arm64/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ config ARM64 
	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST

	select ARCH_USE_CMPXCHG_LOCKREF

	select ARCH_SUPPORTS_ATOMIC_RMW

	select ARCH_SUPPORTS_NUMA_BALANCING

	select ARCH_WANT_OPTIONAL_GPIOLIB

	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION

	select ARCH_WANT_FRAME_POINTERS

arch/arm64/include/asm/pgtable.h

+15 −0
Original line number Diff line number Diff line
@@ -266,6 +266,21 @@ static inline pgprot_t mk_sect_prot(pgprot_t prot) 
	return __pgprot(pgprot_val(prot) & ~PTE_TABLE_BIT);

}



#ifdef CONFIG_NUMA_BALANCING

/*

 * See the comment in include/asm-generic/pgtable.h

 */

static inline int pte_protnone(pte_t pte)

{

	return (pte_val(pte) & (PTE_VALID | PTE_PROT_NONE)) == PTE_PROT_NONE;

}



static inline int pmd_protnone(pmd_t pmd)

{

	return pte_protnone(pmd_pte(pmd));

}

#endif



/*

 * THP definitions.

 */