perf tools: Add include <linux/kernel.h> where ARRAY_SIZE() is used

To pave the way for further cleanups where linux/kernel.h may stop being
included in some header.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
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-qqxan6tfsl6qx3l0v3nwgjvk@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 30498a2..45df4a3 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -22,6 +22,7 @@
 #include <regex.h>
 #include <pthread.h>
 #include <linux/bitops.h>
+#include <linux/kernel.h>
 #include <sys/utsname.h>
 
 const char 	*disassembler_style;
diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c
index bc6bc70..27af9d6 100644
--- a/tools/perf/util/bpf-loader.c
+++ b/tools/perf/util/bpf-loader.c
@@ -9,6 +9,7 @@
 #include <bpf/libbpf.h>
 #include <bpf/bpf.h>
 #include <linux/err.h>
+#include <linux/kernel.h>
 #include <linux/string.h>
 #include "perf.h"
 #include "debug.h"
diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c
index 89ece24..b791751 100644
--- a/tools/perf/util/data-convert-bt.c
+++ b/tools/perf/util/data-convert-bt.c
@@ -8,6 +8,7 @@
  */
 
 #include <linux/compiler.h>
+#include <linux/kernel.h>
 #include <babeltrace/ctf-writer/writer.h>
 #include <babeltrace/ctf-writer/clock.h>
 #include <babeltrace/ctf-writer/stream.h>
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index 42db00d..385c82e 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -1,4 +1,5 @@
 #include <asm/bug.h>
+#include <linux/kernel.h>
 #include <sys/time.h>
 #include <sys/resource.h>
 #include "symbol.h"
diff --git a/tools/perf/util/dwarf-regs.c b/tools/perf/util/dwarf-regs.c
index 62bc4a8..c708395 100644
--- a/tools/perf/util/dwarf-regs.c
+++ b/tools/perf/util/dwarf-regs.c
@@ -8,6 +8,7 @@
 #include <debug.h>
 #include <dwarf-regs.h>
 #include <elf.h>
+#include <linux/kernel.h>
 
 #ifndef EM_AARCH64
 #define EM_AARCH64	183  /* ARM 64 bit */
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 4d7e65f..a0f59f6 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -1,3 +1,4 @@
+#include <linux/kernel.h>
 #include <linux/types.h>
 #include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
 #include <api/fs/fs.h>
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 3994299..3fed4fb 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -1,6 +1,7 @@
 #ifndef __PERF_EVLIST_H
 #define __PERF_EVLIST_H 1
 
+#include <linux/kernel.h>
 #include <linux/refcount.h>
 #include <linux/list.h>
 #include <api/fd/array.h>
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index 1d4ab53..c56d52f 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -6,6 +6,7 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <api/fs/fs.h>
+#include <linux/kernel.h>
 #include "mem-events.h"
 #include "debug.h"
 #include "symbol.h"
diff --git a/tools/perf/util/perf-hooks.c b/tools/perf/util/perf-hooks.c
index cb36830..d550929 100644
--- a/tools/perf/util/perf-hooks.c
+++ b/tools/perf/util/perf-hooks.c
@@ -9,6 +9,7 @@
 #include <stdlib.h>
 #include <setjmp.h>
 #include <linux/err.h>
+#include <linux/kernel.h>
 #include "util/util.h"
 #include "util/debug.h"
 #include "util/perf-hooks.h"
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 4bd7585..1ffae42 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -9,6 +9,7 @@
 #include "thread.h"
 #include "data.h"
 #include "ordered-events.h"
+#include <linux/kernel.h>
 #include <linux/rbtree.h>
 #include <linux/perf_event.h>
 
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 73f3ec1..13b9af1 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -7,6 +7,7 @@
 #include "evlist.h"
 #include <traceevent/event-parse.h>
 #include "mem-events.h"
+#include <linux/kernel.h>
 
 regex_t		parent_regex;
 const char	default_parent_pattern[] = "^sys_|^do_page_fault";
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 9b4d8ba..619e3eb 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <linux/kernel.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/param.h>
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index dcdb87a..e8ce6ab 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -2,6 +2,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <linux/kernel.h>
 #include "session.h"
 #include "thread.h"
 #include "thread-stack.h"