diff options
| author | Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com> | 2016-04-09 01:50:28 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-04-15 20:06:09 +0300 |
| commit | 561662301eb6a40d569453b3555fc8cfce094b93 (patch) | |
| tree | 9c83f419e10821a1c59ea2cb4c70ca6d36176b51 /arch/arm64/include/asm/pgtable.h | |
| parent | 1a2db300348b799479d2d22b84d51b27ad0458c7 (diff) | |
| download | linux-561662301eb6a40d569453b3555fc8cfce094b93.tar.xz | |
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: Steve Capper <steve.capper@arm.com>
Reviewed-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/pgtable.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 2abfa4d09e65..3c91b179089a 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -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. */ |