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| author | Aneesh Kumar K.V | 2016-04-29 15:26:23 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2016-05-11 13:53:54 +0200 |
| commit | 5ed7ecd08a0807d6d616c3d958402f9c723bb048 (patch) | |
| tree | 416bd1a8321d42861a301e10eecd0f37902fd1d6 /arch/powerpc/mm/pgtable-radix.c | |
| parent | powerpc/radix: Update MMU cache (diff) | |
| download | kernel-qcow2-linux-5ed7ecd08a0807d6d616c3d958402f9c723bb048.tar.gz kernel-qcow2-linux-5ed7ecd08a0807d6d616c3d958402f9c723bb048.tar.xz kernel-qcow2-linux-5ed7ecd08a0807d6d616c3d958402f9c723bb048.zip | |
powerpc/mm: pte_frag abstraction
In this patch we make the number of pte fragments per level 4 page table
page a variable. Radix level 4 table size is 256 bytes and hence we can
have 256 fragments per level 4 page. We don't update the fragment count
in this patch. We need to do performance measurements to find the right
value for fragment count.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/pgtable-radix.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable-radix.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index 13afacdfa96e..a5a5253c3ea1 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -334,6 +334,11 @@ void __init radix__early_init_mmu(void) __vmalloc_end = RADIX_VMALLOC_END; vmemmap = (struct page *)RADIX_VMEMMAP_BASE; ioremap_bot = IOREMAP_BASE; + /* + * For now radix also use the same frag size + */ + __pte_frag_nr = H_PTE_FRAG_NR; + __pte_frag_size_shift = H_PTE_FRAG_SIZE_SHIFT; radix_init_page_sizes(); if (!firmware_has_feature(FW_FEATURE_LPAR)) |