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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2019-04-17 18:29:17 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-04-21 23:12:40 +1000 |
| commit | 1c946c1b7f2ba40bc9b521219ad34e5da3fc3088 (patch) | |
| tree | 17e48a3b636c8479cd97c42cc33a5770f5e788ec /arch/powerpc/include/asm/book3s/64/hash-64k.h | |
| parent | powerpc/mm: Drop the unnecessary region check (diff) | |
| download | linux-dev-1c946c1b7f2ba40bc9b521219ad34e5da3fc3088.tar.xz linux-dev-1c946c1b7f2ba40bc9b521219ad34e5da3fc3088.zip | |
powerpc/mm/hash: Simplify the region id calculation.
This reduces multiple comparisons in get_region_id to a bit shift operation.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64/hash-64k.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash-64k.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash-64k.h b/arch/powerpc/include/asm/book3s/64/hash-64k.h index 0d0191cda050..d1d9177d9ebd 100644 --- a/arch/powerpc/include/asm/book3s/64/hash-64k.h +++ b/arch/powerpc/include/asm/book3s/64/hash-64k.h @@ -13,6 +13,7 @@ * is handled in the hotpath. */ #define MAX_EA_BITS_PER_CONTEXT 49 +#define REGION_SHIFT MAX_EA_BITS_PER_CONTEXT /* * We use one context for each MAP area. |