perf namespaces: Remove namespaces.h from .h headers

There we need just forward declarations, so remove it and add it just on
the .c files that actually touch the struct definitions.

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-wsjxzt99p83jubt6hu0med0f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-probe.c

@@ -32,6 +32,7 @@
 
 #include "perf.h"
 #include "builtin.h"
+#include "namespaces.h"
 #include "util/util.h"
 #include "util/strlist.h"
 #include "util/strfilter.h"

tools/perf/util/build-id.c

@@ -15,6 +15,7 @@
 #include <sys/types.h>
 #include "build-id.h"
 #include "event.h"
+#include "namespaces.h"
 #include "symbol.h"
 #include "thread.h"
 #include <linux/kernel.h>

tools/perf/util/build-id.h

@@ -6,9 +6,10 @@
 #define SBUILD_ID_SIZE	(BUILD_ID_SIZE * 2 + 1)
 
 #include "tool.h"
-#include "namespaces.h"
 #include <linux/types.h>
 
+struct nsinfo;
+
 extern struct perf_tool build_id__mark_dso_hit_ops;
 struct dso;
 struct feat_fd;

tools/perf/util/dso.c

@@ -10,6 +10,7 @@
 #include <fcntl.h>
 #include <libgen.h>
 #include "compress.h"
+#include "namespaces.h"
 #include "path.h"
 #include "symbol.h"
 #include "srcline.h"

tools/perf/util/dso.h

@@ -10,9 +10,9 @@
 #include <stdio.h>
 #include "rwsem.h"
 #include <linux/bitops.h>
-#include "namespaces.h"
 #include "build-id.h"
 
+struct machine;
 struct map;
 
 enum dso_binary_type {

tools/perf/util/probe-event.c

@@ -35,6 +35,7 @@
 
 #include "util.h"
 #include "event.h"
+#include "namespaces.h"
 #include "strlist.h"
 #include "strfilter.h"
 #include "debug.h"

tools/perf/util/probe-event.h

@@ -4,8 +4,9 @@
 
 #include <linux/compiler.h>
 #include <stdbool.h>
-#include "intlist.h"
-#include "namespaces.h"
+
+struct intlist;
+struct nsinfo;
 
 /* Probe related configurations */
 struct probe_conf {

tools/perf/util/probe-file.c

@@ -20,6 +20,7 @@
 #include <sys/types.h>
 #include <sys/uio.h>
 #include <unistd.h>
+#include "namespaces.h"
 #include "util.h"
 #include "event.h"
 #include "strlist.h"

tools/perf/util/thread.h

@@ -13,6 +13,7 @@
 #include <intlist.h>
 #include "rwsem.h"
 
+struct namespaces_event;
 struct thread_stack;
 struct unwind_libunwind_ops;
 

tools/perf/util/util.c

@@ -2,6 +2,7 @@
 #include "../perf.h"
 #include "util.h"
 #include "debug.h"
+#include "namespaces.h"
 #include <api/fs/fs.h>
 #include <sys/mman.h>
 #include <sys/stat.h>