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Subject[tip:perf/core] perf tools: Add bitmap_or function into bitmap object
Commit-ID:  850f8127fa3666737881aecb3b16e8ede85e58f4
Gitweb: http://git.kernel.org/tip/850f8127fa3666737881aecb3b16e8ede85e58f4
Author: Jiri Olsa <jolsa@redhat.com>
AuthorDate: Fri, 27 Jan 2012 15:34:23 +0100
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 13 Feb 2012 23:28:10 -0200

perf tools: Add bitmap_or function into bitmap object

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>
---
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 */

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