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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/include/asm/book3s/64/hash-4k.h | |
| 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/include/asm/book3s/64/hash-4k.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash-4k.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h index dcb9d6e94a0c..99f360e0ecb0 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-4k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h @@ -28,6 +28,8 @@ #define H_PAGE_4K_PFN 0x0 #define H_PAGE_THP_HUGE 0x0 #define H_PAGE_COMBO 0x0 +#define H_PTE_FRAG_NR 0 +#define H_PTE_FRAG_SIZE_SHIFT 0 /* * On all 4K setups, remap_4k_pfn() equates to remap_pfn_range() */ |