perf bench: Disentangle headers

We should try avoiding that perf.h header, it includes way too much
stuff, making it difficult to use things like setting _GNU_SOURCE only
on a small set of headers.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-lb6eg9w1kzrwhv0gm3ho0h54@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/bench/futex-hash.c

@@ -11,10 +11,14 @@
 /* For the CLR_() macros */
 #include <pthread.h>
 
-#include "../perf.h"
+#include <errno.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <linux/kernel.h>
+#include <sys/time.h>
+
 #include "../util/stat.h"
 #include <subcmd/parse-options.h>
-#include "../util/header.h"
 #include "bench.h"
 #include "futex.h"
 

tools/perf/bench/futex-lock-pi.c

@@ -5,11 +5,11 @@
 /* For the CLR_() macros */
 #include <pthread.h>
 
-#include "../perf.h"
-#include "../util/util.h"
+#include <signal.h>
 #include "../util/stat.h"
 #include <subcmd/parse-options.h>
-#include "../util/header.h"
+#include <linux/kernel.h>
+#include <errno.h>
 #include "bench.h"
 #include "futex.h"
 

tools/perf/bench/futex-requeue.c

@@ -11,11 +11,11 @@
 /* For the CLR_() macros */
 #include <pthread.h>
 
-#include "../perf.h"
-#include "../util/util.h"
+#include <signal.h>
 #include "../util/stat.h"
 #include <subcmd/parse-options.h>
-#include "../util/header.h"
+#include <linux/kernel.h>
+#include <errno.h>
 #include "bench.h"
 #include "futex.h"
 

tools/perf/bench/futex-wake-parallel.c

@@ -10,11 +10,11 @@
 /* For the CLR_() macros */
 #include <pthread.h>
 
-#include "../perf.h"
-#include "../util/util.h"
+#include <signal.h>
 #include "../util/stat.h"
 #include <subcmd/parse-options.h>
-#include "../util/header.h"
+#include <linux/kernel.h>
+#include <errno.h>
 #include "bench.h"
 #include "futex.h"
 

tools/perf/bench/futex-wake.c

@@ -11,11 +11,11 @@
 /* For the CLR_() macros */
 #include <pthread.h>
 
-#include "../perf.h"
-#include "../util/util.h"
+#include <signal.h>
 #include "../util/stat.h"
 #include <subcmd/parse-options.h>
-#include "../util/header.h"
+#include <linux/kernel.h>
+#include <errno.h>
 #include "bench.h"
 #include "futex.h"