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| author | Yury Norov <yury.norov@gmail.com> | 2020-02-03 17:37:24 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-04 03:05:26 +0000 |
| commit | 0bddc1bd05d6973fee9303005abab6567f743ea7 (patch) | |
| tree | d2eca8afb2d44bab2623694dc93481111a75ca25 /tools | |
| parent | 0bee0cece2a6a71ccc347fdc1d46cf638cd5fd1c (diff) | |
| download | linux-0bddc1bd05d6973fee9303005abab6567f743ea7.tar.gz | |
bitops: more BITS_TO_* macros
Introduce BITS_TO_U64, BITS_TO_U32 and BITS_TO_BYTES as they are handy in the following patches (BITS_TO_U32 specifically). Reimplement tools/ version of the macros according to the kernel implementation. Also fix indentation for BITS_PER_TYPE definition. Link: http://lkml.kernel.org/r/20200102043031.30357-3-yury.norov@gmail.com Signed-off-by: Yury Norov <yury.norov@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Amritha Nambiar <amritha.nambiar@intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Kees Cook <keescook@chromium.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miklos Szeredi <mszeredi@redhat.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: "Tobin C . Harding" <tobin@kernel.org> Cc: Vineet Gupta <vineet.gupta1@synopsys.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Willem de Bruijn <willemb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/include/linux/bitops.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/include/linux/bitops.h b/tools/include/linux/bitops.h index 140c8362f113..5fca38fe1ba8 100644 --- a/tools/include/linux/bitops.h +++ b/tools/include/linux/bitops.h @@ -14,10 +14,11 @@ #include <linux/bits.h> #include <linux/compiler.h> -#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) -#define BITS_TO_U64(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(u64)) -#define BITS_TO_U32(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(u32)) -#define BITS_TO_BYTES(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE) +#define BITS_PER_TYPE(type) (sizeof(type) * BITS_PER_BYTE) +#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(long)) +#define BITS_TO_U64(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(u64)) +#define BITS_TO_U32(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(u32)) +#define BITS_TO_BYTES(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(char)) extern unsigned int __sw_hweight8(unsigned int w); extern unsigned int __sw_hweight16(unsigned int w); |