perf session: Ditch register_perf_file_handler

Pass the event_ops to perf_session__process_events instead.

Also move the event_ops definition to session.h, starting to
move things around to their right place, trimming the many
unneeded headers we have.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260741029-4430-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

tools/perf/Makefile

@@ -370,7 +370,6 @@ LIB_H += util/values.h
 LIB_H += util/sort.h
 LIB_H += util/hist.h
 LIB_H += util/thread.h
-LIB_H += util/data_map.h
 LIB_H += util/probe-finder.h
 LIB_H += util/probe-event.h
 

tools/perf/builtin-annotate.c

@@ -26,7 +26,6 @@
 #include "util/sort.h"
 #include "util/hist.h"
 #include "util/session.h"
-#include "util/data_map.h"
 
 static char		const *input_name = "perf.data";
 
@@ -454,7 +453,7 @@ static void find_annotations(void)
 	}
 }
 
-static struct perf_file_handler file_handler = {
+static struct perf_event_ops event_ops = {
 	.process_sample_event	= process_sample_event,
 	.process_mmap_event	= event__process_mmap,
 	.process_comm_event	= event__process_comm,
@@ -463,7 +462,8 @@ static struct perf_file_handler file_handler = {
 
 static int __cmd_annotate(void)
 {
-	struct perf_session *session = perf_session__new(input_name, O_RDONLY, force);
+	struct perf_session *session = perf_session__new(input_name, O_RDONLY,
+							 force);
 	struct thread *idle;
 	int ret;
 
@@ -471,9 +471,9 @@ static int __cmd_annotate(void)
 		return -ENOMEM;
 
 	idle = register_idle_thread();
-	register_perf_file_handler(&file_handler);
 
-	ret = perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
+	ret = perf_session__process_events(session, &event_ops, 0,
+					   &event__cwdlen, &event__cwd);
 	if (ret)
 		goto out_delete;
 

tools/perf/builtin-buildid-list.c

@@ -9,7 +9,6 @@
 #include "builtin.h"
 #include "perf.h"
 #include "util/cache.h"
-#include "util/data_map.h"
 #include "util/debug.h"
 #include "util/parse-options.h"
 #include "util/session.h"

tools/perf/builtin-kmem.c

@@ -12,7 +12,6 @@
 #include "util/trace-event.h"
 
 #include "util/debug.h"
-#include "util/data_map.h"
 
 #include <linux/rbtree.h>
 
@@ -359,7 +358,7 @@ static int sample_type_check(u64 type)
 	return 0;
 }
 
-static struct perf_file_handler file_handler = {
+static struct perf_event_ops event_ops = {
 	.process_sample_event	= process_sample_event,
 	.process_comm_event	= event__process_comm,
 	.sample_type_check	= sample_type_check,
@@ -374,9 +373,8 @@ static int read_events(void)
 		return -ENOMEM;
 
 	register_idle_thread();
-	register_perf_file_handler(&file_handler);
-
-	err = perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
+	err = perf_session__process_events(session, &event_ops, 0,
+					   &event__cwdlen, &event__cwd);
 	perf_session__delete(session);
 	return err;
 }

tools/perf/builtin-report.c

@@ -27,7 +27,6 @@
 #include "util/parse-options.h"
 #include "util/parse-events.h"
 
-#include "util/data_map.h"
 #include "util/thread.h"
 #include "util/sort.h"
 #include "util/hist.h"
@@ -748,7 +747,7 @@ static int sample_type_check(u64 type)
 	return 0;
 }
 
-static struct perf_file_handler file_handler = {
+static struct perf_event_ops event_ops = {
 	.process_sample_event	= process_sample_event,
 	.process_mmap_event	= event__process_mmap,
 	.process_comm_event	= process_comm_event,
@@ -776,9 +775,7 @@ static int __cmd_report(void)
 	if (show_threads)
 		perf_read_values_init(&show_threads_values);
 
-	register_perf_file_handler(&file_handler);
-
-	ret = perf_session__process_events(session, full_paths,
+	ret = perf_session__process_events(session, &event_ops, full_paths,
 					   &event__cwdlen, &event__cwd);
 	if (ret)
 		goto out_delete;

tools/perf/builtin-sched.c

@@ -12,7 +12,6 @@
 #include "util/trace-event.h"
 
 #include "util/debug.h"
-#include "util/data_map.h"
 
 #include <sys/prctl.h>
 
@@ -1656,7 +1655,7 @@ static int sample_type_check(u64 type)
 	return 0;
 }
 
-static struct perf_file_handler file_handler = {
+static struct perf_event_ops event_ops = {
 	.process_sample_event	= process_sample_event,
 	.process_comm_event	= event__process_comm,
 	.process_lost_event	= process_lost_event,
@@ -1672,9 +1671,9 @@ static int read_events(void)
 		return -ENOMEM;
 
 	register_idle_thread();
-	register_perf_file_handler(&file_handler);
 
-	err = perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
+	err = perf_session__process_events(session, &event_ops, 0,
+					   &event__cwdlen, &event__cwd);
 	perf_session__delete(session);
 	return err;
 }

tools/perf/builtin-timechart.c

@@ -30,7 +30,7 @@
 #include "util/parse-options.h"
 #include "util/parse-events.h"
 #include "util/event.h"
-#include "util/data_map.h"
+#include "util/session.h"
 #include "util/svghelper.h"
 
 static char		const *input_name = "perf.data";
@@ -1046,7 +1046,7 @@ static int sample_type_check(u64 type)
 	return 0;
 }
 
-static struct perf_file_handler file_handler = {
+static struct perf_event_ops event_ops = {
 	.process_comm_event	= process_comm_event,
 	.process_fork_event	= process_fork_event,
 	.process_exit_event	= process_exit_event,
@@ -1062,9 +1062,8 @@ static int __cmd_timechart(void)
 	if (session == NULL)
 		return -ENOMEM;
 
-	register_perf_file_handler(&file_handler);
-
-	ret = perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
+	ret = perf_session__process_events(session, &event_ops, 0,
+					   &event__cwdlen, &event__cwd);
 	if (ret)
 		goto out_delete;
 

tools/perf/builtin-trace.c

@@ -57,7 +57,6 @@ static int cleanup_scripting(void)
 #include "util/debug.h"
 
 #include "util/trace-event.h"
-#include "util/data_map.h"
 #include "util/exec_cmd.h"
 
 static char const		*input_name = "perf.data";
@@ -118,7 +117,7 @@ static int sample_type_check(u64 type)
 	return 0;
 }
 
-static struct perf_file_handler file_handler = {
+static struct perf_event_ops event_ops = {
 	.process_sample_event	= process_sample_event,
 	.process_comm_event	= event__process_comm,
 	.sample_type_check	= sample_type_check,
@@ -127,9 +126,8 @@ static struct perf_file_handler file_handler = {
 static int __cmd_trace(struct perf_session *session)
 {
 	register_idle_thread();
-	register_perf_file_handler(&file_handler);
-
-	return perf_session__process_events(session, 0, &event__cwdlen, &event__cwd);
+	return perf_session__process_events(session, &event_ops, 0,
+					    &event__cwdlen, &event__cwd);
 }
 
 struct script_spec {

tools/perf/util/data_map.c

@@ -1,10 +1,8 @@
-#include "data_map.h"
 #include "symbol.h"
 #include "util.h"
 #include "debug.h"
+#include "session.h"
 
-
-static struct perf_file_handler *curr_handler;
 static unsigned long	mmap_window = 32;
 static char		__cwd[PATH_MAX];
 
@@ -15,7 +13,7 @@ static int process_event_stub(event_t *event __used,
 	return 0;
 }
 
-void register_perf_file_handler(struct perf_file_handler *handler)
+static void perf_event_ops__fill_defaults(struct perf_event_ops *handler)
 {
 	if (!handler->process_sample_event)
 		handler->process_sample_event = process_event_stub;
@@ -35,8 +33,6 @@ void register_perf_file_handler(struct perf_file_handler *handler)
 		handler->process_throttle_event = process_event_stub;
 	if (!handler->process_unthrottle_event)
 		handler->process_unthrottle_event = process_event_stub;
-
-	curr_handler = handler;
 }
 
 static const char *event__name[] = {
@@ -63,6 +59,7 @@ void event__print_totals(void)
 }
 
 static int process_event(event_t *event, struct perf_session *session,
+			 struct perf_event_ops *ops,
 			 unsigned long offset, unsigned long head)
 {
 	trace_event(event);
@@ -78,25 +75,25 @@ static int process_event(event_t *event, struct perf_session *session,
 
 	switch (event->header.type) {
 	case PERF_RECORD_SAMPLE:
-		return curr_handler->process_sample_event(event, session);
+		return ops->process_sample_event(event, session);
 	case PERF_RECORD_MMAP:
-		return curr_handler->process_mmap_event(event, session);
+		return ops->process_mmap_event(event, session);
 	case PERF_RECORD_COMM:
-		return curr_handler->process_comm_event(event, session);
+		return ops->process_comm_event(event, session);
 	case PERF_RECORD_FORK:
-		return curr_handler->process_fork_event(event, session);
+		return ops->process_fork_event(event, session);
 	case PERF_RECORD_EXIT:
-		return curr_handler->process_exit_event(event, session);
+		return ops->process_exit_event(event, session);
 	case PERF_RECORD_LOST:
-		return curr_handler->process_lost_event(event, session);
+		return ops->process_lost_event(event, session);
 	case PERF_RECORD_READ:
-		return curr_handler->process_read_event(event, session);
+		return ops->process_read_event(event, session);
 	case PERF_RECORD_THROTTLE:
-		return curr_handler->process_throttle_event(event, session);
+		return ops->process_throttle_event(event, session);
 	case PERF_RECORD_UNTHROTTLE:
-		return curr_handler->process_unthrottle_event(event, session);
+		return ops->process_unthrottle_event(event, session);
 	default:
-		curr_handler->total_unknown++;
+		ops->total_unknown++;
 		return -1;
 	}
 }
@@ -131,6 +128,7 @@ out:
 }
 
 int perf_session__process_events(struct perf_session *self,
+				 struct perf_event_ops *ops,
 				 int full_paths, int *cwdlen, char **cwd)
 {
 	int err;
@@ -142,10 +140,7 @@ int perf_session__process_events(struct perf_session *self,
 	uint32_t size;
 	char *buf;
 
-	if (curr_handler == NULL) {
-		pr_debug("Forgot to register perf file handler\n");
-		return -EINVAL;
-	}
+	perf_event_ops__fill_defaults(ops);
 
 	page_size = getpagesize();
 
@@ -153,8 +148,8 @@ int perf_session__process_events(struct perf_session *self,
 	sample_type = perf_header__sample_type(&self->header);
 
 	err = -EINVAL;
-	if (curr_handler->sample_type_check &&
-	    curr_handler->sample_type_check(sample_type) < 0)
+	if (ops->sample_type_check &&
+	    ops->sample_type_check(sample_type) < 0)
 		goto out_err;
 
 	if (!full_paths) {
@@ -210,7 +205,7 @@ more:
 			(void *)(long)event->header.size,
 			event->header.type);
 
-	if (!size || process_event(event, self, offset, head) < 0) {
+	if (!size || process_event(event, self, ops, offset, head) < 0) {
 
 		dump_printf("%p [%p]: skipping unknown header type: %d\n",
 			(void *)(offset + head),

tools/perf/util/data_map.h

@@ -1,32 +0,0 @@
-#ifndef __PERF_DATAMAP_H
-#define __PERF_DATAMAP_H
-
-#include "event.h"
-#include "header.h"
-#include "session.h"
-
-struct perf_session;
-
-typedef int (*event_type_handler_t)(event_t *self,
-				    struct perf_session *session);
-
-struct perf_file_handler {
-	event_type_handler_t	process_sample_event;
-	event_type_handler_t	process_mmap_event;
-	event_type_handler_t	process_comm_event;
-	event_type_handler_t	process_fork_event;
-	event_type_handler_t	process_exit_event;
-	event_type_handler_t	process_lost_event;
-	event_type_handler_t	process_read_event;
-	event_type_handler_t	process_throttle_event;
-	event_type_handler_t	process_unthrottle_event;
-	int			(*sample_type_check)(u64 sample_type);
-	unsigned long		total_unknown;
-};
-
-void register_perf_file_handler(struct perf_file_handler *handler);
-int perf_session__process_events(struct perf_session *self,
-				 int full_paths, int *cwdlen, char **cwd);
-int perf_header__read_build_ids(int input, u64 offset, u64 file_size);
-
-#endif

tools/perf/util/header.c

@@ -8,8 +8,8 @@
 #include "header.h"
 #include "../perf.h"
 #include "trace-event.h"
+#include "session.h"
 #include "symbol.h"
-#include "data_map.h"
 #include "debug.h"
 
 /*

tools/perf/util/session.c

@@ -48,7 +48,8 @@ out_close:
 	return -1;
 }
 
-struct perf_session *perf_session__new(const char *filename, int mode, bool force)
+struct perf_session *perf_session__new(const char *filename, int mode,
+				       bool force)
 {
 	size_t len = strlen(filename) + 1;
 	struct perf_session *self = zalloc(sizeof(*self) + len);

tools/perf/util/session.h

@@ -1,6 +1,7 @@
 #ifndef __PERF_SESSION_H
 #define __PERF_SESSION_H
 
+#include "event.h"
 #include "header.h"
 
 struct perf_session {
@@ -10,7 +11,30 @@ struct perf_session {
 	char filename[0];
 };
 
-struct perf_session *perf_session__new(const char *filename, int mode, bool force);
+typedef int (*event_op)(event_t *self, struct perf_session *session);
+
+struct perf_event_ops {
+	event_op	process_sample_event;
+	event_op	process_mmap_event;
+	event_op	process_comm_event;
+	event_op	process_fork_event;
+	event_op	process_exit_event;
+	event_op	process_lost_event;
+	event_op	process_read_event;
+	event_op	process_throttle_event;
+	event_op	process_unthrottle_event;
+	int		(*sample_type_check)(u64 sample_type);
+	unsigned long	total_unknown;
+};
+
+struct perf_session *perf_session__new(const char *filename, int mode,
+				       bool force);
 void perf_session__delete(struct perf_session *self);
 
+int perf_session__process_events(struct perf_session *self,
+				 struct perf_event_ops *event_ops,
+				 int full_paths, int *cwdlen, char **cwd);
+
+int perf_header__read_build_ids(int input, u64 offset, u64 file_size);
+
 #endif /* __PERF_SESSION_H */