From: Arnaldo Carvalho de Melo <a...@redhat.com>

Both had copies originating from git.git, move those to
tools/lib/string.c, getting both tools/lib/subcmd/ and tools/perf/ to
use it.

Cc: Adrian Hunter <adrian.hun...@intel.com>
Cc: David Ahern <dsah...@gmail.com>
Cc: Jiri Olsa <jo...@kernel.org>
Cc: Josh Poimboeuf <jpoim...@redhat.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Wang Nan <wangn...@huawei.com>
Link: http://lkml.kernel.org/n/tip-uidwtticro1qhttzd2rkr...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
 tools/include/linux/string.h     | 2 ++
 tools/lib/string.c               | 9 +++++++++
 tools/lib/subcmd/help.c          | 1 +
 tools/lib/subcmd/parse-options.c | 1 +
 tools/lib/subcmd/subcmd-util.h   | 9 ---------
 tools/perf/util/strbuf.c         | 9 ---------
 tools/perf/util/util.h           | 2 --
 7 files changed, 13 insertions(+), 20 deletions(-)

diff --git a/tools/include/linux/string.h b/tools/include/linux/string.h
index f436d2420a18..d62b56cf8c12 100644
--- a/tools/include/linux/string.h
+++ b/tools/include/linux/string.h
@@ -18,4 +18,6 @@ extern size_t strlcpy(char *dest, const char *src, size_t 
size);
 
 char *str_error_r(int errnum, char *buf, size_t buflen);
 
+int prefixcmp(const char *str, const char *prefix);
+
 #endif /* _LINUX_STRING_H_ */
diff --git a/tools/lib/string.c b/tools/lib/string.c
index bd239bc1d557..8e678af1c6ee 100644
--- a/tools/lib/string.c
+++ b/tools/lib/string.c
@@ -87,3 +87,12 @@ size_t __weak strlcpy(char *dest, const char *src, size_t 
size)
        }
        return ret;
 }
+
+int prefixcmp(const char *str, const char *prefix)
+{
+       for (; ; str++, prefix++)
+               if (!*prefix)
+                       return 0;
+               else if (*str != *prefix)
+                       return (unsigned char)*prefix - (unsigned char)*str;
+}
diff --git a/tools/lib/subcmd/help.c b/tools/lib/subcmd/help.c
index e228c3cb3716..ba970a73d053 100644
--- a/tools/lib/subcmd/help.c
+++ b/tools/lib/subcmd/help.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <linux/string.h>
 #include <termios.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>
diff --git a/tools/lib/subcmd/parse-options.c b/tools/lib/subcmd/parse-options.c
index 6bc24025d054..359bfa77f39c 100644
--- a/tools/lib/subcmd/parse-options.c
+++ b/tools/lib/subcmd/parse-options.c
@@ -1,4 +1,5 @@
 #include <linux/compiler.h>
+#include <linux/string.h>
 #include <linux/types.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/tools/lib/subcmd/subcmd-util.h b/tools/lib/subcmd/subcmd-util.h
index fc2e45d8aaf1..8fa5f036eff0 100644
--- a/tools/lib/subcmd/subcmd-util.h
+++ b/tools/lib/subcmd/subcmd-util.h
@@ -79,13 +79,4 @@ static inline void astrcat(char **out, const char *add)
        free(tmp);
 }
 
-static inline int prefixcmp(const char *str, const char *prefix)
-{
-       for (; ; str++, prefix++)
-               if (!*prefix)
-                       return 0;
-               else if (*str != *prefix)
-                       return (unsigned char)*prefix - (unsigned char)*str;
-}
-
 #endif /* __SUBCMD_UTIL_H */
diff --git a/tools/perf/util/strbuf.c b/tools/perf/util/strbuf.c
index e91b5e86f027..aafe908b82b5 100644
--- a/tools/perf/util/strbuf.c
+++ b/tools/perf/util/strbuf.c
@@ -3,15 +3,6 @@
 #include <linux/kernel.h>
 #include <errno.h>
 
-int prefixcmp(const char *str, const char *prefix)
-{
-       for (; ; str++, prefix++)
-               if (!*prefix)
-                       return 0;
-               else if (*str != *prefix)
-                       return (unsigned char)*prefix - (unsigned char)*str;
-}
-
 /*
  * Used as the default ->buf value, so that people can always assume
  * buf is non NULL and ->buf is NUL terminated even for a freshly
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index d620719775a8..5dfb9bb6482d 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -30,8 +30,6 @@ void warning(const char *err, ...) __attribute__((format 
(printf, 1, 2)));
 
 void set_warning_routine(void (*routine)(const char *err, va_list params));
 
-int prefixcmp(const char *str, const char *prefix);
-
 static inline void *zalloc(size_t size)
 {
        return calloc(1, size);
-- 
2.9.3

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