perf tools: Add signal.h to places using its definitions

And remove it from util.h, disentangling it a bit more.

Link: http://lkml.kernel.org/n/tip-2zg9s5nx90yde64j3g4z2uhk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/arch/x86/tests/intel-cqm.c

@@ -6,6 +6,7 @@
 #include "evsel.h"
 #include "arch-tests.h"
 
+#include <signal.h>
 #include <sys/mman.h>
 #include <errno.h>
 #include <string.h>

tools/perf/builtin-inject.c

@@ -23,6 +23,7 @@
 
 #include <linux/list.h>
 #include <errno.h>
+#include <signal.h>
 
 struct perf_inject {
 	struct perf_tool	tool;

tools/perf/builtin-kvm.c

@@ -31,6 +31,7 @@
 #include <inttypes.h>
 #include <termios.h>
 #include <semaphore.h>
+#include <signal.h>
 #include <pthread.h>
 #include <math.h>
 

tools/perf/builtin-record.c

@@ -44,6 +44,7 @@
 #include <inttypes.h>
 #include <unistd.h>
 #include <sched.h>
+#include <signal.h>
 #include <sys/mman.h>
 #include <asm/bug.h>
 #include <linux/time64.h>

tools/perf/builtin-report.c

@@ -42,6 +42,7 @@
 #include <errno.h>
 #include <inttypes.h>
 #include <regex.h>
+#include <signal.h>
 #include <linux/bitmap.h>
 #include <linux/stringify.h>
 

tools/perf/builtin-script.c

@@ -35,6 +35,7 @@
 #include <dirent.h>
 #include <errno.h>
 #include <inttypes.h>
+#include <signal.h>
 
 #include "sane_ctype.h"
 

tools/perf/builtin-stat.c

@@ -70,6 +70,7 @@
 #include <linux/time64.h>
 #include <api/fs/fs.h>
 #include <errno.h>
+#include <signal.h>
 #include <stdlib.h>
 #include <sys/prctl.h>
 #include <inttypes.h>

tools/perf/builtin-top.c

@@ -59,6 +59,7 @@
 #include <errno.h>
 #include <time.h>
 #include <sched.h>
+#include <signal.h>
 
 #include <sys/syscall.h>
 #include <sys/ioctl.h>

tools/perf/builtin-trace.c

@@ -45,6 +45,7 @@
 #include <errno.h>
 #include <inttypes.h>
 #include <libaudit.h> /* FIXME: Still needed for audit_errno_to_name */
+#include <signal.h>
 #include <stdlib.h>
 #include <string.h>
 #include <linux/err.h>

tools/perf/perf.c

@@ -21,6 +21,7 @@
 #include <api/fs/tracing_path.h>
 #include <errno.h>
 #include <pthread.h>
+#include <signal.h>
 #include <stdlib.h>
 #include <time.h>
 #include <linux/kernel.h>

tools/perf/trace/beauty/signum.c

@@ -1,3 +1,4 @@
+#include <signal.h>
 
 static size_t syscall_arg__scnprintf_signum(char *bf, size_t size, struct syscall_arg *arg)
 {

tools/perf/ui/gtk/annotate.c

@@ -4,6 +4,7 @@
 #include "util/evsel.h"
 #include "ui/helpline.h"
 #include <inttypes.h>
+#include <signal.h>
 
 enum {
 	ANN_COL__PERCENT,

tools/perf/ui/gtk/hists.c

@@ -6,6 +6,7 @@
 #include "../helpline.h"
 #include "../string2.h"
 #include "gtk.h"
+#include <signal.h>
 
 #define MAX_COLUMNS			32
 

tools/perf/util/evlist.c

@@ -18,6 +18,7 @@
 #include "evsel.h"
 #include "debug.h"
 #include "asm/bug.h"
+#include <signal.h>
 #include <unistd.h>
 
 #include "parse-events.h"

tools/perf/util/evlist.h

@@ -11,6 +11,7 @@
 #include "evsel.h"
 #include "util.h"
 #include "auxtrace.h"
+#include <signal.h>
 #include <unistd.h>
 
 struct pollfd;

tools/perf/util/util.c

@@ -9,6 +9,7 @@
 #endif
 #include <dirent.h>
 #include <inttypes.h>
+#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

tools/perf/util/util.h

@@ -22,7 +22,6 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <time.h>
-#include <signal.h>
 #include <assert.h>
 #include <utime.h>
 #include <sys/wait.h>