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| author | Ingo Molnar <mingo@kernel.org> | 2014-02-02 09:43:20 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-02-02 09:43:20 +0100 |
| commit | 65370bdf881e20907e7a53abab9b8c0bc5f60a6b (patch) | |
| tree | 0d32a494e873b7b92dbfab0e67ffeef597ee8108 /arch/powerpc/include/asm/bitops.h | |
| parent | locking/mcs: Allow architectures to hook in to contended paths (diff) | |
| parent | Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/k... (diff) | |
| download | linux-65370bdf881e20907e7a53abab9b8c0bc5f60a6b.tar.xz linux-65370bdf881e20907e7a53abab9b8c0bc5f60a6b.zip | |
Merge branch 'linus' into core/locking
Refresh the topic.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/powerpc/include/asm/bitops.h')
| -rw-r--r-- | arch/powerpc/include/asm/bitops.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h index 910194e9a1e2..a5e9a7d494d8 100644 --- a/arch/powerpc/include/asm/bitops.h +++ b/arch/powerpc/include/asm/bitops.h @@ -46,6 +46,11 @@ #include <asm/asm-compat.h> #include <asm/synch.h> +/* PPC bit number conversion */ +#define PPC_BITLSHIFT(be) (BITS_PER_LONG - 1 - (be)) +#define PPC_BIT(bit) (1UL << PPC_BITLSHIFT(bit)) +#define PPC_BITMASK(bs, be) ((PPC_BIT(bs) - PPC_BIT(be)) | PPC_BIT(bs)) + /* * clear_bit doesn't imply a memory barrier */ |