perf kwork: Remove includes not needed in kwork.h

Leave just some forward declarations for pointers, move the includes to
where they are really needed.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-kwork.c

@@ -6,10 +6,15 @@
  */
 
 #include "builtin.h"
+#include "perf.h"
 
 #include "util/data.h"
+#include "util/evlist.h"
+#include "util/evsel.h"
+#include "util/header.h"
 #include "util/kwork.h"
 #include "util/debug.h"
+#include "util/session.h"
 #include "util/symbol.h"
 #include "util/thread.h"
 #include "util/string2.h"
@@ -21,6 +26,7 @@
 
 #include <errno.h>
 #include <inttypes.h>
+#include <signal.h>
 #include <linux/err.h>
 #include <linux/time64.h>
 #include <linux/zalloc.h>

tools/perf/util/bpf_kwork.c

@@ -7,15 +7,18 @@
 
 #include <time.h>
 #include <fcntl.h>
+#include <signal.h>
 #include <stdio.h>
 #include <unistd.h>
 
 #include <linux/time64.h>
 
 #include "util/debug.h"
+#include "util/evsel.h"
 #include "util/kwork.h"
 
 #include <bpf/bpf.h>
+#include <perf/cpumap.h>
 
 #include "util/bpf_skel/kwork_trace.skel.h"
 

tools/perf/util/kwork.h

 #ifndef PERF_UTIL_KWORK_H
 #define PERF_UTIL_KWORK_H
 
-#include "perf.h"
-
 #include "util/tool.h"
-#include "util/event.h"
-#include "util/evlist.h"
-#include "util/session.h"
 #include "util/time-utils.h"
 
-#include <linux/list.h>
 #include <linux/bitmap.h>
+#include <linux/list.h>
+#include <linux/rbtree.h>
+#include <linux/types.h>
+
+struct perf_sample;
+struct perf_session;
 
 enum kwork_class_type {
 	KWORK_CLASS_IRQ,