perf time-utils: Adopt rdclock() from perf.h

Seems to be a better place for this function to live, further shrinking
the hodge-podge that perf.h was.

Cc: Adrian Hunter <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Link: https://lkml.kernel.org/n/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-stat.c

···
 #include "util/string2.h"
 #include "util/metricgroup.h"
 #include "util/target.h"
+#include "util/time-utils.h"
 #include "util/top.h"
 #include "asm/bug.h"
 

tools/perf/perf.h

···
 #ifndef _PERF_PERF_H
 #define _PERF_PERF_H
 
-#include <time.h>
 #include <stdbool.h>
-
-static inline unsigned long long rdclock(void)
-{
-	struct timespec ts;
-
-	clock_gettime(CLOCK_MONOTONIC, &ts);
-	return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
-}
 
 #ifndef MAX_NR_CPUS
 #define MAX_NR_CPUS			2048

tools/perf/util/event.c

···
 #include "strlist.h"
 #include "thread.h"
 #include "thread_map.h"
+#include "time-utils.h"
 #include <linux/ctype.h>
 #include "map.h"
 #include "symbol.h"

tools/perf/util/time-utils.h

···
 #define _TIME_UTILS_H_
 
 #include <stddef.h>
+#include <time.h>
 #include <linux/types.h>
 
 struct perf_time_interval {
···
 int timestamp__scnprintf_nsec(u64 timestamp, char *buf, size_t sz);
 
 int fetch_current_timestamp(char *buf, size_t sz);
+
+static inline unsigned long long rdclock(void)
+{
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
+}
 
 #endif