From: tip-bot for Jiri Olsa <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: mingo@kernel.org, hpa@zytor.com, dsahern@gmail.com,
linux-kernel@vger.kernel.org, a.p.zijlstra@chello.nl,
jolsa@kernel.org, namhyung@kernel.org, tglx@linutronix.de,
acme@redhat.com
Subject: [tip:perf/urgent] tools lib: Add bitmap_and function
Date: Thu, 4 Aug 2016 02:11:58 -0700 [thread overview]
Message-ID: <tip-741c74f55e8a66f3bc5bbc29dc162c952759e47b@git.kernel.org> (raw)
In-Reply-To: <1470074555-24889-4-git-send-email-jolsa@kernel.org>
Commit-ID: 741c74f55e8a66f3bc5bbc29dc162c952759e47b
Gitweb: http://git.kernel.org/tip/741c74f55e8a66f3bc5bbc29dc162c952759e47b
Author: Jiri Olsa <jolsa@kernel.org>
AuthorDate: Mon, 1 Aug 2016 20:02:31 +0200
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 2 Aug 2016 16:33:27 -0300
tools lib: Add bitmap_and function
Add support to perform logical and on bitmaps. Code taken from kernel's
include/linux/bitmap.h.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1470074555-24889-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/include/linux/bitmap.h | 17 +++++++++++++++++
tools/lib/bitmap.c | 15 +++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h
index 1cdded0..43c1c50 100644
--- a/tools/include/linux/bitmap.h
+++ b/tools/include/linux/bitmap.h
@@ -11,6 +11,8 @@
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);
+int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int bits);
#define BITMAP_FIRST_WORD_MASK(start) (~0UL << ((start) & (BITS_PER_LONG - 1)))
@@ -85,4 +87,19 @@ static inline unsigned long *bitmap_alloc(int nbits)
size_t bitmap_scnprintf(unsigned long *bitmap, int nbits,
char *buf, size_t size);
+/**
+ * bitmap_and - Do logical and on bitmaps
+ * @dst: resulting bitmap
+ * @src1: operand 1
+ * @src2: operand 2
+ * @nbits: size of bitmap
+ */
+static inline int bitmap_and(unsigned long *dst, const unsigned long *src1,
+ const unsigned long *src2, unsigned int nbits)
+{
+ if (small_const_nbits(nbits))
+ return (*dst = *src1 & *src2 & BITMAP_LAST_WORD_MASK(nbits)) != 0;
+ return __bitmap_and(dst, src1, src2, nbits);
+}
+
#endif /* _PERF_BITOPS_H */
diff --git a/tools/lib/bitmap.c b/tools/lib/bitmap.c
index 5c7e318..38748b0 100644
--- a/tools/lib/bitmap.c
+++ b/tools/lib/bitmap.c
@@ -58,3 +58,18 @@ size_t bitmap_scnprintf(unsigned long *bitmap, int nbits,
}
return ret;
}
+
+int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
+ const unsigned long *bitmap2, unsigned int bits)
+{
+ unsigned int k;
+ unsigned int lim = bits/BITS_PER_LONG;
+ unsigned long result = 0;
+
+ for (k = 0; k < lim; k++)
+ result |= (dst[k] = bitmap1[k] & bitmap2[k]);
+ if (bits % BITS_PER_LONG)
+ result |= (dst[k] = bitmap1[k] & bitmap2[k] &
+ BITMAP_LAST_WORD_MASK(bits));
+ return result != 0;
+}
next prev parent reply other threads:[~2016-08-04 9:18 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-01 18:02 [PATCH 0/7] perf tools: Several fixes Jiri Olsa
2016-08-01 18:02 ` [PATCH 1/7] tools lib: Add bitmap_alloc function Jiri Olsa
2016-08-01 18:45 ` David Ahern
2016-08-02 9:33 ` Jiri Olsa
2016-08-02 11:33 ` [PATCHv2 " Jiri Olsa
2016-08-02 12:56 ` Arnaldo Carvalho de Melo
2016-08-02 13:03 ` Jiri Olsa
2016-08-04 9:11 ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2016-08-01 18:02 ` [PATCH 2/7] tools lib: Add bitmap_snprintf function Jiri Olsa
2016-08-02 15:25 ` Arnaldo Carvalho de Melo
2016-08-04 9:11 ` [tip:perf/urgent] tools lib: Add bitmap_scnprintf function tip-bot for Jiri Olsa
2016-08-01 18:02 ` [PATCH 3/7] tools lib: Add bitmap_and function Jiri Olsa
2016-08-04 9:11 ` tip-bot for Jiri Olsa [this message]
2016-08-01 18:02 ` [PATCH 4/7] perf tests: Add test for bitmap_snprintf function Jiri Olsa
2016-08-04 9:12 ` [tip:perf/urgent] perf tests: Add test for bitmap_scnprintf function tip-bot for Jiri Olsa
2016-08-01 18:02 ` [PATCH 5/7] perf tools: Move config/Makefile into Makefile.config Jiri Olsa
2016-08-04 9:13 ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2016-08-01 18:02 ` [PATCH 6/7] perf tools: Introduce hists__output_resort_cb function Jiri Olsa
2016-08-04 9:13 ` [tip:perf/urgent] perf hists: Introduce output_resort_cb method tip-bot for Jiri Olsa
2016-08-01 18:02 ` [PATCH 7/7] perf tools: Add --sample-cpu option to record command Jiri Olsa
2016-08-04 9:14 ` [tip:perf/urgent] perf record: Add --sample-cpu option tip-bot for Jiri Olsa
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