perf tools: Uninline scnprintf() and vscnprint()

They were in tools/include/linux/kernel.h, requiring that it in turn
included stdio.h, which is way too heavy.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-855h8olnkot9v0dajuee1lo3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/include/linux/kernel.h

@@ -2,8 +2,7 @@
 #define __TOOLS_LINUX_KERNEL_H
 
 #include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
+#include <stddef.h>
 #include <assert.h>
 
 #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
@@ -70,29 +69,8 @@
 #define cpu_to_le64(x)	(x)
 #define cpu_to_le32(x)	(x)
 
-static inline int
-vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
-{
-	int i;
-	ssize_t ssize = size;
-
-	i = vsnprintf(buf, size, fmt, args);
-
-	return (i >= ssize) ? (ssize - 1) : i;
-}
-
-static inline int scnprintf(char * buf, size_t size, const char * fmt, ...)
-{
-	va_list args;
-	ssize_t ssize = size;
-	int i;
-
-	va_start(args, fmt);
-	i = vsnprintf(buf, size, fmt, args);
-	va_end(args);
-
-	return (i >= ssize) ? (ssize - 1) : i;
-}
+int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
+int scnprintf(char * buf, size_t size, const char * fmt, ...);
 
 /*
  * This looks more complex than it should be. But we need to

tools/lib/vsprintf.c

@@ -0,0 +1,24 @@
+#include <sys/types.h>
+#include <linux/kernel.h>
+#include <stdio.h>
+
+int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
+{
+       int i = vsnprintf(buf, size, fmt, args);
+       ssize_t ssize = size;
+
+       return (i >= ssize) ? (ssize - 1) : i;
+}
+
+int scnprintf(char * buf, size_t size, const char * fmt, ...)
+{
+       ssize_t ssize = size;
+       va_list args;
+       int i;
+
+       va_start(args, fmt);
+       i = vsnprintf(buf, size, fmt, args);
+       va_end(args);
+
+       return (i >= ssize) ? (ssize - 1) : i;
+}

tools/objtool/builtin-check.c

@@ -26,6 +26,7 @@
  */
 
 #include <string.h>
+#include <stdlib.h>
 #include <subcmd/parse-options.h>
 
 #include "builtin.h"

tools/perf/MANIFEST

@@ -30,6 +30,7 @@ tools/lib/symbol/kallsyms.h
 tools/lib/find_bit.c
 tools/lib/bitmap.c
 tools/lib/str_error_r.c
+tools/lib/vsprintf.c
 tools/include/asm/atomic.h
 tools/include/asm/barrier.h
 tools/include/asm/bug.h

tools/perf/util/Build

@@ -85,6 +85,7 @@ libperf-y += parse-regs-options.o
 libperf-y += term.o
 libperf-y += help-unknown-cmd.o
 libperf-y += mem-events.o
+libperf-y += vsprintf.o
 
 libperf-$(CONFIG_LIBBPF) += bpf-loader.o
 libperf-$(CONFIG_BPF_PROLOGUE) += bpf-prologue.o
@@ -181,3 +182,7 @@ $(OUTPUT)util/str_error_r.o: ../lib/str_error_r.c FORCE
 $(OUTPUT)util/hweight.o: ../lib/hweight.c FORCE
 	$(call rule_mkdir)
 	$(call if_changed_dep,cc_o_c)
+
+$(OUTPUT)util/vsprintf.o: ../lib/vsprintf.c FORCE
+	$(call rule_mkdir)
+	$(call if_changed_dep,cc_o_c)

tools/perf/util/color.c

@@ -1,6 +1,8 @@
 #include <linux/kernel.h>
 #include "cache.h"
 #include "config.h"
+#include <stdlib.h>
+#include <stdio.h>
 #include "color.h"
 #include <math.h>
 #include <unistd.h>

tools/perf/util/dso.h

@@ -4,6 +4,7 @@
 #include <linux/atomic.h>
 #include <linux/types.h>
 #include <linux/rbtree.h>
+#include <sys/types.h>
 #include <stdbool.h>
 #include <pthread.h>
 #include <linux/types.h>

tools/perf/util/help-unknown-cmd.c

@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "config.h"
+#include <stdio.h>
 #include <subcmd/help.h>
 #include "../builtin.h"
 #include "levenshtein.h"

tools/perf/util/python-ext-sources

@@ -14,6 +14,7 @@ util/cpumap.c
 ../lib/find_bit.c
 ../lib/hweight.c
 ../lib/str_error_r.c
+../lib/vsprintf.c
 util/thread_map.c
 util/util.c
 util/xyarray.c