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    Subject[PATCH 4/9] perf, tool: Add bitmap_or function into bitmap object
    Date
    Adding implementation os bitmap_or function to the bitmap
    object. It is stolen from the kernel lib/bitmap.o object.

    It is used in upcomming patches.

    Signed-off-by: Jiri Olsa <jolsa@redhat.com>
    ---
    tools/perf/util/bitmap.c | 10 ++++++++++
    tools/perf/util/include/linux/bitmap.h | 11 +++++++++++
    2 files changed, 21 insertions(+), 0 deletions(-)

    diff --git a/tools/perf/util/bitmap.c b/tools/perf/util/bitmap.c
    index 5e230ac..0a1adc1 100644
    --- a/tools/perf/util/bitmap.c
    +++ b/tools/perf/util/bitmap.c
    @@ -19,3 +19,13 @@ int __bitmap_weight(const unsigned long *bitmap, int bits)

    return w;
    }
    +
    +void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
    + const unsigned long *bitmap2, int bits)
    +{
    + int k;
    + int nr = BITS_TO_LONGS(bits);
    +
    + for (k = 0; k < nr; k++)
    + dst[k] = bitmap1[k] | bitmap2[k];
    +}
    diff --git a/tools/perf/util/include/linux/bitmap.h b/tools/perf/util/include/linux/bitmap.h
    index eda4416..bb162e4 100644
    --- a/tools/perf/util/include/linux/bitmap.h
    +++ b/tools/perf/util/include/linux/bitmap.h
    @@ -5,6 +5,8 @@
    #include <linux/bitops.h>

    int __bitmap_weight(const unsigned long *bitmap, int bits);
    +void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
    + const unsigned long *bitmap2, int bits);

    #define BITMAP_LAST_WORD_MASK(nbits) \
    ( \
    @@ -32,4 +34,13 @@ static inline int bitmap_weight(const unsigned long *src, int nbits)
    return __bitmap_weight(src, nbits);
    }

    +static inline void bitmap_or(unsigned long *dst, const unsigned long *src1,
    + const unsigned long *src2, int nbits)
    +{
    + if (small_const_nbits(nbits))
    + *dst = *src1 | *src2;
    + else
    + __bitmap_or(dst, src1, src2, nbits);
    +}
    +
    #endif /* _PERF_BITOPS_H */
    --
    1.7.6.5


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