perf tools: Move event synthesizing routines to separate header

Those are the only routines using the perf_event__handler_t typedef and
are all related, so move to a separate header to reduce the header
dependency tree, lots of places were getting event.h and even stdio.h,
limits.h indirectly, so fix those as well.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-yvx9u1mf7baq6cu1abfhbqgs@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/code-reading.c

@@ -24,6 +24,7 @@
 #include "symbol.h"
 #include "event.h"
 #include "record.h"
+#include "util/synthetic-events.h"
 #include "thread.h"
 
 #include "tests.h"

tools/perf/tests/cpumap.c

@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include "cpumap.h"
 #include "event.h"
+#include "util/synthetic-events.h"
 #include <string.h>
 #include <linux/bitops.h>
 #include <perf/cpumap.h>

tools/perf/tests/dwarf-unwind.c

@@ -15,6 +15,7 @@
 #include "symbol.h"
 #include "thread.h"
 #include "callchain.h"
+#include "util/synthetic-events.h"
 
 #if defined (__x86_64__) || defined (__i386__) || defined (__powerpc__)
 #include "arch-tests.h"

tools/perf/tests/event_update.c

@@ -7,6 +7,7 @@
 #include "evsel.h"
 #include "header.h"
 #include "machine.h"
+#include "util/synthetic-events.h"
 #include "tool.h"
 #include "tests.h"
 #include "debug.h"

tools/perf/tests/hists_common.c

@@ -2,6 +2,7 @@
 #include <inttypes.h>
 #include "util/debug.h"
 #include "util/dso.h"
+#include "util/event.h" // struct perf_sample
 #include "util/map.h"
 #include "util/symbol.h"
 #include "util/sort.h"
@@ -10,6 +11,7 @@
 #include "util/thread.h"
 #include "tests/hists_common.h"
 #include <linux/kernel.h>
+#include <linux/perf_event.h>
 
 static struct {
 	u32 pid;

tools/perf/tests/mmap-thread-lookup.c

@@ -8,11 +8,13 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include "debug.h"
+#include "event.h"
 #include "tests.h"
 #include "machine.h"
 #include "thread_map.h"
 #include "map.h"
 #include "symbol.h"
+#include "util/synthetic-events.h"
 #include "thread.h"
 #include "util.h" // page_size
 

tools/perf/tests/sample-parsing.c

@@ -12,6 +12,7 @@
 #include "event.h"
 #include "evsel.h"
 #include "debug.h"
+#include "util/synthetic-events.h"
 
 #include "tests.h"
 

tools/perf/tests/stat.c

@@ -5,6 +5,7 @@
 #include "stat.h"
 #include "counts.h"
 #include "debug.h"
+#include "util/synthetic-events.h"
 
 static bool has_term(struct perf_record_stat_config *config,
 		     u64 tag, u64 val)

tools/perf/tests/thread-map.c

@@ -8,6 +8,7 @@
 #include "thread_map.h"
 #include "debug.h"
 #include "event.h"
+#include "util/synthetic-events.h"
 #include <linux/zalloc.h>
 #include <perf/event.h>