[tip:perf/core] perf tools: Add memdup function

[tip-bot for Jiri Olsa <jolsa@redhat.com>]

Commit-ID:  b232e0732b1d763834c3d5b098d25d59337ba075
Gitweb:     http://git.kernel.org/tip/b232e0732b1d763834c3d5b098d25d59337ba075
Author:     Jiri Olsa <jolsa@redhat.com>
AuthorDate: Mon, 10 Sep 2012 18:50:17 +0200
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 11 Sep 2012 12:04:41 -0300

perf tools: Add memdup function

Adding memdup function to duplicate region of memory.

  void *memdup(const void *src, size_t len)

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.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/1347295819-23177-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/include/linux/string.h |    2 ++
 tools/perf/util/string.c               |   18 +++++++++++++++++-
 2 files changed, 19 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/include/linux/string.h b/tools/perf/util/include/linux/string.h
index 3b2f590..6f19c54 100644
--- a/tools/perf/util/include/linux/string.h
+++ b/tools/perf/util/include/linux/string.h
@@ -1 +1,3 @@
 #include <string.h>
+
+void *memdup(const void *src, size_t len);
diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c
index 199bc4d..3217059 100644
--- a/tools/perf/util/string.c
+++ b/tools/perf/util/string.c
@@ -1,5 +1,5 @@
 #include "util.h"
-#include "string.h"
+#include "linux/string.h"
 
 #define K 1024LL
 /*
@@ -335,3 +335,19 @@ char *rtrim(char *s)
 
 	return s;
 }
+
+/**
+ * memdup - duplicate region of memory
+ * @src: memory region to duplicate
+ * @len: memory region length
+ */
+void *memdup(const void *src, size_t len)
+{
+	void *p;
+
+	p = malloc(len);
+	if (p)
+		memcpy(p, src, len);
+
+	return p;
+}