linux-kernel - [tip:perf/core] perf tools: Add bitmap

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Date:	Fri, 17 Feb 2012 01:53:10 -0800
From:	tip-bot for Jiri Olsa <jolsa@...hat.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, paulus@...ba.org,
	hpa@...or.com, mingo@...hat.com, a.p.zijlstra@...llo.nl,
	jolsa@...hat.com, tglx@...utronix.de, cjashfor@...ux.vnet.ibm.com,
	mingo@...e.hu
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@...hat.com>
AuthorDate: Fri, 27 Jan 2012 15:34:23 +0100
Committer:  Arnaldo Carvalho de Melo <acme@...hat.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@...ux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/1327674868-10486-5-git-send-email-jolsa@redhat.com
Signed-off-by: Jiri Olsa <jolsa@...hat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.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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