diff --git a/tools/perf/arch/common.c b/tools/perf/arch/common.c
index 886dd2a..837067f 100644
--- a/tools/perf/arch/common.c
+++ b/tools/perf/arch/common.c
@@ -4,6 +4,8 @@
 #include "../util/util.h"
 #include "../util/debug.h"
 
+#include "sane_ctype.h"
+
 const char *const arm_triplets[] = {
 	"arm-eabi-",
 	"arm-linux-androideabi-",
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index fa6bf1c..15754a4 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -27,6 +27,8 @@
 #include <locale.h>
 #include <regex.h>
 
+#include "sane_ctype.h"
+
 static int	kmem_slab;
 static int	kmem_page;
 
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index d4677fb..aefab93 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -34,6 +34,8 @@
 #include <api/fs/fs.h>
 #include <linux/time64.h>
 
+#include "sane_ctype.h"
+
 #define PR_SET_NAME		15               /* Set process name */
 #define MAX_CPUS		4096
 #define COMM_LEN		20
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index c4e36b4..5afd9a6 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -32,6 +32,8 @@
 #include "util/dump-insn.h"
 #include <inttypes.h>
 
+#include "sane_ctype.h"
+
 static char const		*script_name;
 static char const		*generate_script_lang;
 static bool			debug_mode;
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index b7199f0..5abef25 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -74,6 +74,8 @@
 #include <locale.h>
 #include <math.h>
 
+#include "sane_ctype.h"
+
 #define DEFAULT_SEPARATOR	" "
 #define CNTR_NOT_SUPPORTED	"<not supported>"
 #define CNTR_NOT_COUNTED	"<not counted>"
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index a0c97c7..ec3247d 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -72,6 +72,8 @@
 #include <linux/time64.h>
 #include <linux/types.h>
 
+#include "sane_ctype.h"
+
 static volatile int done;
 
 #define HEADER_LINE_NR  5
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index aba5fac..0b00d8a 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -51,6 +51,8 @@
 #include <linux/stringify.h>
 #include <linux/time64.h>
 
+#include "sane_ctype.h"
+
 #ifndef O_CLOEXEC
 # define O_CLOEXEC		02000000
 #endif
diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index 6effcfb..fe6aac8 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -4,7 +4,6 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <stdio.h>
-#include <ctype.h>
 #include <string.h>
 
 #include "parse-events.h"
@@ -18,6 +17,8 @@
 
 #include "tests.h"
 
+#include "sane_ctype.h"
+
 #define BUFSZ	1024
 #define READLEN	128
 
diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 9e47ccb..73bdd07 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -13,6 +13,7 @@
 #include "helpline.h"
 #include "keysyms.h"
 #include "../color.h"
+#include "sane_ctype.h"
 
 static int ui_browser__percent_color(struct ui_browser *browser,
 				     double percent, bool current)
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index a2ea1fa..56f5c038 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -20,6 +20,8 @@
 #include "map.h"
 #include "annotate.h"
 
+#include "sane_ctype.h"
+
 extern void hist_browser__init_hpp(void);
 
 static int perf_evsel_browser_title(struct hist_browser *browser,
diff --git a/tools/perf/ui/browsers/map.c b/tools/perf/ui/browsers/map.c
index 9ce142d..ffa5add 100644
--- a/tools/perf/ui/browsers/map.c
+++ b/tools/perf/ui/browsers/map.c
@@ -11,6 +11,8 @@
 #include "../keysyms.h"
 #include "map.h"
 
+#include "sane_ctype.h"
+
 struct map_browser {
 	struct ui_browser b;
 	struct map	  *map;
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index d52d5f6..297a79c 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -4,7 +4,7 @@
 #include "../../util/hist.h"
 #include "../../util/sort.h"
 #include "../../util/evsel.h"
-
+#include "../../util/sane_ctype.h"
 
 static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
 {
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 4d4faf9..d69fdafb 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -26,6 +26,8 @@
 #include <linux/kernel.h>
 #include <sys/utsname.h>
 
+#include "sane_ctype.h"
+
 const char 	*disassembler_style;
 const char	*objdump_path;
 static regex_t	 file_lineno;
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index a81a402..0daf63b 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -17,7 +17,6 @@
 #include <sys/types.h>
 #include <sys/mman.h>
 #include <stdbool.h>
-#include <ctype.h>
 #include <string.h>
 #include <limits.h>
 #include <errno.h>
@@ -47,7 +46,6 @@
 #include "cpumap.h"
 #include "thread_map.h"
 #include "asm/bug.h"
-#include "symbol/kallsyms.h"
 #include "auxtrace.h"
 
 #include <linux/hash.h>
@@ -60,6 +58,9 @@
 #include "intel-pt.h"
 #include "intel-bts.h"
 
+#include "sane_ctype.h"
+#include "symbol/kallsyms.h"
+
 int auxtrace_mmap__mmap(struct auxtrace_mmap *mm,
 			struct auxtrace_mmap_params *mp,
 			void *userpg, int fd)
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index 33af675..3c07555 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -19,6 +19,7 @@
 #include "vdso.h"
 #include "probe-file.h"
 
+#include "sane_ctype.h"
 
 static bool no_buildid_cache;
 
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 7b01d59..88783aa 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -15,6 +15,8 @@
 #include "util/llvm-utils.h"   /* perf_llvm_config */
 #include "config.h"
 
+#include "sane_ctype.h"
+
 #define MAXNAME (256)
 
 #define DEBUG_CACHE_DIR ".debug"
diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 061018b..9d9ecb2 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -8,6 +8,8 @@
 #include <linux/bitmap.h>
 #include "asm/bug.h"
 
+#include "sane_ctype.h"
+
 static int max_cpu_num;
 static int max_present_cpu_num;
 static int max_node_num;
diff --git a/tools/perf/util/ctype.c b/tools/perf/util/ctype.c
index d4a5a21..4b261c2 100644
--- a/tools/perf/util/ctype.c
+++ b/tools/perf/util/ctype.c
@@ -3,7 +3,7 @@
  *
  * No surprises, and works with signed and unsigned chars.
  */
-#include "util.h"
+#include "sane_ctype.h"
 
 enum {
 	S = GIT_SPACE,
diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c
index ef80221..c3277b3 100644
--- a/tools/perf/util/data-convert-bt.c
+++ b/tools/perf/util/data-convert-bt.c
@@ -29,6 +29,7 @@
 #include "evsel.h"
 #include "machine.h"
 #include "config.h"
+#include "sane_ctype.h"
 
 #define pr_N(n, fmt, ...) \
 	eprintf(n, debug_data_convert, fmt, ##__VA_ARGS__)
diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index 4d5df25..41aa7c6 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -16,6 +16,8 @@
 #include "util.h"
 #include "target.h"
 
+#include "sane_ctype.h"
+
 int verbose;
 bool dump_trace = false, quiet = false;
 int debug_ordered_events;
diff --git a/tools/perf/util/demangle-java.c b/tools/perf/util/demangle-java.c
index 3e6062a..cb66d33 100644
--- a/tools/perf/util/demangle-java.c
+++ b/tools/perf/util/demangle-java.c
@@ -7,6 +7,8 @@
 
 #include "demangle-java.h"
 
+#include "sane_ctype.h"
+
 enum {
 	MODE_PREFIX = 0,
 	MODE_CLASS  = 1,
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index b761b0eb..f8a706b 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -12,6 +12,7 @@
 #include "strlist.h"
 #include "thread.h"
 #include "thread_map.h"
+#include "sane_ctype.h"
 #include "symbol/kallsyms.h"
 #include "asm/bug.h"
 #include "stat.h"
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 99a13a6..757f73c 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -31,6 +31,8 @@
 #include "stat.h"
 #include "util/parse-branch-options.h"
 
+#include "sane_ctype.h"
+
 static struct {
 	bool sample_id_all;
 	bool exclude_guest;
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 0371f34..faf046f 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -27,6 +27,8 @@
 #include <api/fs/fs.h>
 #include "asm/bug.h"
 
+#include "sane_ctype.h"
+
 /*
  * magic2 = "PERFILE2"
  * must be a numerical value to let the endianness
diff --git a/tools/perf/util/jitdump.c b/tools/perf/util/jitdump.c
index da6262d..d6d2532 100644
--- a/tools/perf/util/jitdump.c
+++ b/tools/perf/util/jitdump.c
@@ -26,6 +26,8 @@
 #include "genelf.h"
 #include "../builtin.h"
 
+#include "sane_ctype.h"
+
 struct jit_buf_desc {
 	struct perf_data_file *output;
 	struct perf_session *session;
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 15b2a17c..f13f46a 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -11,11 +11,13 @@
 #include "thread.h"
 #include "vdso.h"
 #include <stdbool.h>
-#include <symbol/kallsyms.h>
 #include "unwind.h"
 #include "linux/hash.h"
 #include "asm/bug.h"
 
+#include "sane_ctype.h"
+#include <symbol/kallsyms.h>
+
 static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock);
 
 static void dsos__init(struct dsos *dsos)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index e61b4b3..7caba70 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -48,6 +48,8 @@
 #include "probe-file.h"
 #include "session.h"
 
+#include "sane_ctype.h"
+
 #define PERFPROBE_GROUP "probe"
 
 bool probe_event_dry_run;	/* Dry run flag */
diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h
index 2956c51..27f0615 100644
--- a/tools/perf/util/probe-finder.h
+++ b/tools/perf/util/probe-finder.h
@@ -2,9 +2,9 @@
 #define _PROBE_FINDER_H
 
 #include <stdbool.h>
-#include "util.h"
 #include "intlist.h"
 #include "probe-event.h"
+#include "sane_ctype.h"
 
 #define MAX_PROBE_BUFFER	1024
 #define MAX_PROBES		 128
diff --git a/tools/perf/util/sane_ctype.h b/tools/perf/util/sane_ctype.h
new file mode 100644
index 0000000..4308c22
--- /dev/null
+++ b/tools/perf/util/sane_ctype.h
@@ -0,0 +1,51 @@
+#ifndef _PERF_SANE_CTYPE_H
+#define _PERF_SANE_CTYPE_H
+
+extern const char *graph_line;
+extern const char *graph_dotted_line;
+extern const char *spaces;
+extern const char *dots;
+
+/* Sane ctype - no locale, and works with signed chars */
+#undef isascii
+#undef isspace
+#undef isdigit
+#undef isxdigit
+#undef isalpha
+#undef isprint
+#undef isalnum
+#undef islower
+#undef isupper
+#undef tolower
+#undef toupper
+
+extern unsigned char sane_ctype[256];
+#define GIT_SPACE		0x01
+#define GIT_DIGIT		0x02
+#define GIT_ALPHA		0x04
+#define GIT_GLOB_SPECIAL	0x08
+#define GIT_REGEX_SPECIAL	0x10
+#define GIT_PRINT_EXTRA		0x20
+#define GIT_PRINT		0x3E
+#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
+#define isascii(x) (((x) & ~0x7f) == 0)
+#define isspace(x) sane_istest(x,GIT_SPACE)
+#define isdigit(x) sane_istest(x,GIT_DIGIT)
+#define isxdigit(x)	\
+	(sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
+#define isalpha(x) sane_istest(x,GIT_ALPHA)
+#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
+#define isprint(x) sane_istest(x,GIT_PRINT)
+#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
+#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
+#define tolower(x) sane_case((unsigned char)(x), 0x20)
+#define toupper(x) sane_case((unsigned char)(x), 0)
+
+static inline int sane_case(int x, int high)
+{
+	if (sane_istest(x, GIT_ALPHA))
+		x = (x & ~0x20) | high;
+	return x;
+}
+
+#endif /* _PERF_SANE_CTYPE_H */
diff --git a/tools/perf/util/strfilter.c b/tools/perf/util/strfilter.c
index efb5377..c663c91 100644
--- a/tools/perf/util/strfilter.c
+++ b/tools/perf/util/strfilter.c
@@ -2,6 +2,8 @@
 #include "string.h"
 #include "strfilter.h"
 
+#include "sane_ctype.h"
+
 /* Operators */
 static const char *OP_and	= "&";	/* Logical AND */
 static const char *OP_or	= "|";	/* Logical OR */
diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c
index e8feb14..e716a6e 100644
--- a/tools/perf/util/string.c
+++ b/tools/perf/util/string.c
@@ -1,6 +1,8 @@
 #include "util.h"
 #include "linux/string.h"
 
+#include "sane_ctype.h"
+
 #define K 1024LL
 /*
  * perf_atoll()
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index d1a40bb..e7ee47f 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -10,8 +10,9 @@
 #include "demangle-rust.h"
 #include "machine.h"
 #include "vdso.h"
-#include <symbol/kallsyms.h>
 #include "debug.h"
+#include "sane_ctype.h"
+#include <symbol/kallsyms.h>
 
 #ifndef EM_AARCH64
 #define EM_AARCH64	183  /* ARM 64 bit */
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 619e3eb..68f14d7 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -19,6 +19,7 @@
 #include "strlist.h"
 #include "intlist.h"
 #include "header.h"
+#include "sane_ctype.h"
 
 #include <elf.h>
 #include <limits.h>
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index de0078e..746bbee 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -21,13 +21,14 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <ctype.h>
 #include <errno.h>
 
 #include "../perf.h"
 #include "util.h"
 #include "trace-event.h"
 
+#include "sane_ctype.h"
+
 static int get_common_field(struct scripting_context *context,
 			    int *offset, int *size, const char *type)
 {
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 524bd3b..717541e 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -21,6 +21,8 @@
 #include "callchain.h"
 #include "strlist.h"
 
+#include "sane_ctype.h"
+
 #define CALLCHAIN_PARAM_DEFAULT			\
 	.mode		= CHAIN_GRAPH_ABS,	\
 	.min_percent	= 0.5,			\
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index f26666d..f7e1ead 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -43,10 +43,6 @@
 #include <termios.h>
 #include "strlist.h"
 
-extern const char *graph_line;
-extern const char *graph_dotted_line;
-extern const char *spaces;
-extern const char *dots;
 extern char buildid_dir[];
 
 #ifdef __GNUC__
@@ -94,48 +90,6 @@ static inline void *zalloc(size_t size)
 
 #define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
 
-/* Sane ctype - no locale, and works with signed chars */
-#undef isascii
-#undef isspace
-#undef isdigit
-#undef isxdigit
-#undef isalpha
-#undef isprint
-#undef isalnum
-#undef islower
-#undef isupper
-#undef tolower
-#undef toupper
-
-extern unsigned char sane_ctype[256];
-#define GIT_SPACE		0x01
-#define GIT_DIGIT		0x02
-#define GIT_ALPHA		0x04
-#define GIT_GLOB_SPECIAL	0x08
-#define GIT_REGEX_SPECIAL	0x10
-#define GIT_PRINT_EXTRA		0x20
-#define GIT_PRINT		0x3E
-#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
-#define isascii(x) (((x) & ~0x7f) == 0)
-#define isspace(x) sane_istest(x,GIT_SPACE)
-#define isdigit(x) sane_istest(x,GIT_DIGIT)
-#define isxdigit(x)	\
-	(sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
-#define isalpha(x) sane_istest(x,GIT_ALPHA)
-#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
-#define isprint(x) sane_istest(x,GIT_PRINT)
-#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
-#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
-#define tolower(x) sane_case((unsigned char)(x), 0x20)
-#define toupper(x) sane_case((unsigned char)(x), 0)
-
-static inline int sane_case(int x, int high)
-{
-	if (sane_istest(x, GIT_ALPHA))
-		x = (x & ~0x20) | high;
-	return x;
-}
-
 int mkdir_p(char *path, mode_t mode);
 int rm_rf(const char *path);
 struct strlist *lsdir(const char *name, bool (*filter)(const char *, struct dirent *));