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perf tools: Add bitmap_or function into bitmap object

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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.

Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1327674868-10486-5-git-send-email-jolsa@redhat.com
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2012-01-27 15:34:23 +01:00 committed by Arnaldo Carvalho de Melo
parent e90fda0635
commit 850f8127fa
2 changed files with 21 additions and 0 deletions
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10
tools/perf/util/bitmap.c
View file

@ -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];
}

11
tools/perf/util/include/linux/bitmap.h
View file

@ -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 */