perf ordered_samples: Remove references to perf_{evlist,tool} and machines

As these can be obtained from the ordered_events pointer, via
container_of, reducing the cross section of ordered_samples.

These were added to ordered_samples in:

 commit b7b61cbebd789a3dbca522e3fdb727fe5c95593f
 Author: Arnaldo Carvalho de Melo <acme@redhat.com>
 Date:   Tue Mar 3 11:58:45 2015 -0300

    perf ordered_events: Shorten function signatures

    By keeping pointers to machines, evlist and tool in ordered_events.

But that was more a transitional patch while moving stuff out from
perf_session.c to ordered_events.c and possibly not even needed by then,
as we could use the container_of() method and instead of having the
nr_unordered_samples stats in events_stats, we can have it in
ordered_samples.

Based-on-a-patch-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-4lk0t9js82g0tfc0x1onpkjt@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/event.h

@@ -242,7 +242,6 @@ struct events_stats {
 	u32 nr_invalid_chains;
 	u32 nr_unknown_id;
 	u32 nr_unprocessable_samples;
-	u32 nr_unordered_events;
 };
 
 struct attr_event {

tools/perf/util/ordered-events.c

@@ -2,7 +2,6 @@
 #include <linux/compiler.h>
 #include <linux/string.h>
 #include "ordered-events.h"
-#include "evlist.h"
 #include "session.h"
 #include "asm/bug.h"
 #include "debug.h"
@@ -167,7 +166,7 @@ int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
 		pr_oe_time(oe->last_flush, "last flush, last_flush_type %d\n",
 			   oe->last_flush_type);
 
-		oe->evlist->stats.nr_unordered_events++;
+		oe->nr_unordered_events++;
 	}
 
 	oevent = ordered_events__new_event(oe, timestamp, event);
@@ -187,7 +186,6 @@ static int __ordered_events__flush(struct ordered_events *oe)
 {
 	struct list_head *head = &oe->events;
 	struct ordered_event *tmp, *iter;
-	struct perf_sample sample;
 	u64 limit = oe->next_flush;
 	u64 last_ts = oe->last ? oe->last->timestamp : 0ULL;
 	bool show_progress = limit == ULLONG_MAX;
@@ -206,15 +204,9 @@ static int __ordered_events__flush(struct ordered_events *oe)
 
 		if (iter->timestamp > limit)
 			break;
-
-		ret = perf_evlist__parse_sample(oe->evlist, iter->event, &sample);
+		ret = oe->deliver(oe, iter);
 		if (ret)
-			pr_err("Can't parse sample, err = %d\n", ret);
-		else {
-			ret = oe->deliver(oe, iter, &sample);
-			if (ret)
-				return ret;
-		}
+			return ret;
 
 		ordered_events__delete(oe, iter);
 		oe->last_flush = iter->timestamp;
@@ -292,18 +284,13 @@ int ordered_events__flush(struct ordered_events *oe, enum oe_flush how)
 	return err;
 }
 
-void ordered_events__init(struct ordered_events *oe, struct machines *machines,
-			  struct perf_evlist *evlist, struct perf_tool *tool,
-			  ordered_events__deliver_t deliver)
+void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver)
 {
 	INIT_LIST_HEAD(&oe->events);
 	INIT_LIST_HEAD(&oe->cache);
 	INIT_LIST_HEAD(&oe->to_free);
 	oe->max_alloc_size = (u64) -1;
 	oe->cur_alloc_size = 0;
-	oe->evlist	   = evlist;
-	oe->machines	   = machines;
-	oe->tool	   = tool;
 	oe->deliver	   = deliver;
 }
 

tools/perf/util/ordered-events.h

@@ -3,10 +3,7 @@
 
 #include <linux/types.h>
 
-struct perf_tool;
-struct perf_evlist;
 struct perf_sample;
-struct machines;
 
 struct ordered_event {
 	u64			timestamp;
@@ -25,8 +22,7 @@ enum oe_flush {
 struct ordered_events;
 
 typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
-					 struct ordered_event *event,
-					 struct perf_sample *sample);
+					 struct ordered_event *event);
 
 struct ordered_events {
 	u64			last_flush;
@@ -39,13 +35,11 @@ struct ordered_events {
 	struct list_head	to_free;
 	struct ordered_event	*buffer;
 	struct ordered_event	*last;
-	struct machines		*machines;
-	struct perf_evlist	*evlist;
-	struct perf_tool	*tool;
 	ordered_events__deliver_t deliver;
 	int			buffer_idx;
 	unsigned int		nr_events;
 	enum oe_flush		last_flush_type;
+	u32			nr_unordered_events;
 	bool                    copy_on_queue;
 };
 
@@ -53,9 +47,7 @@ int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
 			  struct perf_sample *sample, u64 file_offset);
 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
-void ordered_events__init(struct ordered_events *oe, struct machines *machines,
-			  struct perf_evlist *evlsit, struct perf_tool *tool,
-			  ordered_events__deliver_t deliver);
+void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver);
 void ordered_events__free(struct ordered_events *oe);
 
 static inline

tools/perf/util/session.c

@@ -93,11 +93,20 @@ static void perf_session__set_comm_exec(struct perf_session *session)
 }
 
 static int ordered_events__deliver_event(struct ordered_events *oe,
-					 struct ordered_event *event,
-					 struct perf_sample *sample)
+					 struct ordered_event *event)
 {
-	return machines__deliver_event(oe->machines, oe->evlist, event->event,
-				       sample, oe->tool, event->file_offset);
+	struct perf_sample sample;
+	struct perf_session *session = container_of(oe, struct perf_session,
+						    ordered_events);
+	int ret = perf_evlist__parse_sample(session->evlist, event->event, &sample);
+
+	if (ret) {
+		pr_err("Can't parse sample, err = %d\n", ret);
+		return ret;
+	}
+
+	return machines__deliver_event(&session->machines, session->evlist, event->event,
+				       &sample, session->tool, event->file_offset);
 }
 
 struct perf_session *perf_session__new(struct perf_data_file *file,
@@ -109,9 +118,9 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
 		goto out;
 
 	session->repipe = repipe;
+	session->tool   = tool;
 	machines__init(&session->machines);
-	ordered_events__init(&session->ordered_events, &session->machines,
-			     session->evlist, tool, ordered_events__deliver_event);
+	ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
 
 	if (file) {
 		if (perf_data_file__open(file))
@@ -940,7 +949,7 @@ static s64 perf_session__process_user_event(struct perf_session *session,
 					    u64 file_offset)
 {
 	struct ordered_events *oe = &session->ordered_events;
-	struct perf_tool *tool = oe->tool;
+	struct perf_tool *tool = session->tool;
 	int fd = perf_data_file__fd(session->file);
 	int err;
 
@@ -981,7 +990,7 @@ int perf_session__deliver_synth_event(struct perf_session *session,
 				      struct perf_sample *sample)
 {
 	struct perf_evlist *evlist = session->evlist;
-	struct perf_tool *tool = session->ordered_events.tool;
+	struct perf_tool *tool = session->tool;
 
 	events_stats__inc(&evlist->stats, event->header.type);
 
@@ -1059,7 +1068,7 @@ static s64 perf_session__process_event(struct perf_session *session,
 				       union perf_event *event, u64 file_offset)
 {
 	struct perf_evlist *evlist = session->evlist;
-	struct perf_tool *tool = session->ordered_events.tool;
+	struct perf_tool *tool = session->tool;
 	struct perf_sample sample;
 	int ret;
 
@@ -1116,10 +1125,12 @@ static struct thread *perf_session__register_idle_thread(struct perf_session *se
 	return thread;
 }
 
-static void perf_tool__warn_about_errors(const struct perf_tool *tool,
-					 const struct events_stats *stats)
+static void perf_session__warn_about_errors(const struct perf_session *session)
 {
-	if (tool->lost == perf_event__process_lost &&
+	const struct events_stats *stats = &session->evlist->stats;
+	const struct ordered_events *oe = &session->ordered_events;
+
+	if (session->tool->lost == perf_event__process_lost &&
 	    stats->nr_events[PERF_RECORD_LOST] != 0) {
 		ui__warning("Processed %d events and lost %d chunks!\n\n"
 			    "Check IO/CPU overload!\n\n",
@@ -1155,8 +1166,8 @@ static void perf_tool__warn_about_errors(const struct perf_tool *tool,
 			    stats->nr_unprocessable_samples);
 	}
 
-	if (stats->nr_unordered_events != 0)
-		ui__warning("%u out of order events recorded.\n", stats->nr_unordered_events);
+	if (oe->nr_unordered_events != 0)
+		ui__warning("%u out of order events recorded.\n", oe->nr_unordered_events);
 }
 
 volatile int session_done;
@@ -1164,7 +1175,7 @@ volatile int session_done;
 static int __perf_session__process_pipe_events(struct perf_session *session)
 {
 	struct ordered_events *oe = &session->ordered_events;
-	struct perf_tool *tool = oe->tool;
+	struct perf_tool *tool = session->tool;
 	int fd = perf_data_file__fd(session->file);
 	union perf_event *event;
 	uint32_t size, cur_size = 0;
@@ -1247,7 +1258,7 @@ done:
 	err = ordered_events__flush(oe, OE_FLUSH__FINAL);
 out_err:
 	free(buf);
-	perf_tool__warn_about_errors(tool, &session->evlist->stats);
+	perf_session__warn_about_errors(session);
 	ordered_events__free(&session->ordered_events);
 	return err;
 }
@@ -1297,7 +1308,7 @@ static int __perf_session__process_events(struct perf_session *session,
 					  u64 file_size)
 {
 	struct ordered_events *oe = &session->ordered_events;
-	struct perf_tool *tool = oe->tool;
+	struct perf_tool *tool = session->tool;
 	int fd = perf_data_file__fd(session->file);
 	u64 head, page_offset, file_offset, file_pos, size;
 	int err, mmap_prot, mmap_flags, map_idx = 0;
@@ -1393,7 +1404,7 @@ out:
 	err = ordered_events__flush(oe, OE_FLUSH__FINAL);
 out_err:
 	ui_progress__finish();
-	perf_tool__warn_about_errors(tool, &session->evlist->stats);
+	perf_session__warn_about_errors(session);
 	ordered_events__free(&session->ordered_events);
 	session->one_mmap = false;
 	return err;

tools/perf/util/session.h

@@ -26,6 +26,7 @@ struct perf_session {
 	u64			one_mmap_offset;
 	struct ordered_events	ordered_events;
 	struct perf_data_file	*file;
+	struct perf_tool	*tool;
 };
 
 #define PRINT_IP_OPT_IP		(1<<0)