Date:	Mon, 18 May 2015 09:30:48 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Andi Kleen <andi@...stfloor.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 33/40] perf session: Separate struct machines from session

With multi-thread report, separate sessions can be passed to each
thread, in this case we should keep a single machine state for all
struct sessions.  Separate machines and have a pointer in sessions.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/builtin-annotate.c |  2 +-
 tools/perf/builtin-kmem.c     | 10 +++++-----
 tools/perf/builtin-kvm.c      |  2 +-
 tools/perf/builtin-record.c   |  4 ++--
 tools/perf/builtin-report.c   |  4 ++--
 tools/perf/builtin-top.c      |  8 ++++----
 tools/perf/builtin-trace.c    |  2 +-
 tools/perf/util/build-id.c    | 16 ++++++++--------
 tools/perf/util/session.c     | 36 +++++++++++++++++++++---------------
 tools/perf/util/session.h     |  6 +++---
 10 files changed, 48 insertions(+), 42 deletions(-)

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 761f902473b7..d4ad323ddfe2 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -196,7 +196,7 @@ static int __cmd_annotate(struct perf_annotate *ann)
 	struct perf_evsel *pos;
 	u64 total_nr_samples;
 
-	machines__set_symbol_filter(&session->machines, symbol__annotate_init);
+	machines__set_symbol_filter(session->machines, symbol__annotate_init);
 
 	if (ann->cpu_list) {
 		ret = perf_session__cpu_bitmap(session, ann->cpu_list,
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 254614b10c4a..4502954094e5 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -316,7 +316,7 @@ static int build_alloc_func_list(void)
 	struct symbol *sym;
 	struct rb_node *node;
 	struct alloc_func *func;
-	struct machine *machine = &kmem_session->machines.host;
+	struct machine *machine = &kmem_session->machines->host;
 	regex_t alloc_func_regex;
 	const char pattern[] = "^_?_?(alloc|get_free|get_zeroed)_pages?";
 
@@ -366,7 +366,7 @@ static int build_alloc_func_list(void)
 static u64 find_callsite(struct perf_evsel *evsel, struct perf_sample *sample)
 {
 	struct addr_location al;
-	struct machine *machine = &kmem_session->machines.host;
+	struct machine *machine = &kmem_session->machines->host;
 	struct callchain_cursor_node *node;
 
 	if (alloc_func_list == NULL) {
@@ -949,7 +949,7 @@ static void __print_slab_result(struct rb_root *root,
 				int n_lines, int is_caller)
 {
 	struct rb_node *next;
-	struct machine *machine = &session->machines.host;
+	struct machine *machine = &session->machines->host;
 
 	printf("%.105s\n", graph_dotted_line);
 	printf(" %-34s |",  is_caller ? "Callsite": "Alloc Ptr");
@@ -1010,7 +1010,7 @@ static const char * const migrate_type_str[] = {
 static void __print_page_alloc_result(struct perf_session *session, int n_lines)
 {
 	struct rb_node *next = rb_first(&page_alloc_sorted);
-	struct machine *machine = &session->machines.host;
+	struct machine *machine = &session->machines->host;
 	const char *format;
 	int gfp_len = max(strlen("GFP flags"), max_gfp_len);
 
@@ -1060,7 +1060,7 @@ static void __print_page_alloc_result(struct perf_session *session, int n_lines)
 static void __print_page_caller_result(struct perf_session *session, int n_lines)
 {
 	struct rb_node *next = rb_first(&page_caller_sorted);
-	struct machine *machine = &session->machines.host;
+	struct machine *machine = &session->machines->host;
 	int gfp_len = max(strlen("GFP flags"), max_gfp_len);
 
 	printf("\n%.105s\n", graph_dotted_line);
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 15fecd3dc5d8..de3c7e1d0b80 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -1392,7 +1392,7 @@ static int kvm_events_live(struct perf_kvm_stat *kvm,
 	kvm->session->evlist = kvm->evlist;
 	perf_session__set_id_hdr_size(kvm->session);
 	ordered_events__set_copy_on_queue(&kvm->session->ordered_events, true);
-	machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target,
+	machine__synthesize_threads(&kvm->session->machines->host, &kvm->opts.target,
 				    kvm->evlist->threads, false);
 	err = kvm_live_open_events(kvm);
 	if (err)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 4ddf104f50ff..978ebf648aab 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -684,7 +684,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 		goto out_child;
 	}
 
-	machine = &session->machines.host;
+	machine = &session->machines->host;
 
 	if (file->is_pipe) {
 		err = perf_event__synthesize_attrs(tool, session,
@@ -735,7 +735,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 		       "Check /proc/modules permission or run as root.\n");
 
 	if (perf_guest) {
-		machines__process_guests(&session->machines,
+		machines__process_guests(session->machines,
 					 perf_event__synthesize_guest_os, tool);
 	}
 
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 5e53eee5a9a7..650d78ad3357 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -353,7 +353,7 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
 
 static void report__warn_kptr_restrict(const struct report *rep)
 {
-	struct map *kernel_map = rep->session->machines.host.vmlinux_maps[MAP__FUNCTION];
+	struct map *kernel_map = rep->session->machines->host.vmlinux_maps[MAP__FUNCTION];
 	struct kmap *kernel_kmap = kernel_map ? map__kmap(kernel_map) : NULL;
 
 	if (kernel_map == NULL ||
@@ -845,7 +845,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 	 */
 	if (ui__has_annotation()) {
 		symbol_conf.priv_size = sizeof(struct annotation);
-		machines__set_symbol_filter(&session->machines,
+		machines__set_symbol_filter(session->machines,
 					    symbol__annotate_init);
 		/*
  		 * For searching by name on the "Browse map details".
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index ea6e7bd04f9a..0ab663e200ed 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -828,13 +828,13 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
 			++top->us_samples;
 			if (top->hide_user_symbols)
 				goto next_event;
-			machine = &session->machines.host;
+			machine = &session->machines->host;
 			break;
 		case PERF_RECORD_MISC_KERNEL:
 			++top->kernel_samples;
 			if (top->hide_kernel_symbols)
 				goto next_event;
-			machine = &session->machines.host;
+			machine = &session->machines->host;
 			break;
 		case PERF_RECORD_MISC_GUEST_KERNEL:
 			++top->guest_kernel_samples;
@@ -939,7 +939,7 @@ static int __cmd_top(struct perf_top *top)
 	if (top->session == NULL)
 		return -1;
 
-	machines__set_symbol_filter(&top->session->machines, symbol_filter);
+	machines__set_symbol_filter(top->session->machines, symbol_filter);
 
 	if (!objdump_path) {
 		ret = perf_session_env__lookup_objdump(&top->session->header.env);
@@ -951,7 +951,7 @@ static int __cmd_top(struct perf_top *top)
 	if (ret)
 		goto out_delete;
 
-	machine__synthesize_threads(&top->session->machines.host, &opts->target,
+	machine__synthesize_threads(&top->session->machines->host, &opts->target,
 				    top->evlist->threads, false);
 	ret = perf_top__start_counters(top);
 	if (ret)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index a05490d06374..f3df6fa596e9 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2418,7 +2418,7 @@ static int trace__replay(struct trace *trace)
 	if (symbol__init(&session->header.env) < 0)
 		goto out;
 
-	trace->host = &session->machines.host;
+	trace->host = &session->machines->host;
 
 	err = perf_session__set_tracepoints_handlers(session, handlers);
 	if (err)
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index ad8cfcbaa25d..8720f71a96dd 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -221,12 +221,12 @@ static int machine__write_buildid_table(struct machine *machine, int fd)
 int perf_session__write_buildid_table(struct perf_session *session, int fd)
 {
 	struct rb_node *nd;
-	int err = machine__write_buildid_table(&session->machines.host, fd);
+	int err = machine__write_buildid_table(&session->machines->host, fd);
 
 	if (err)
 		return err;
 
-	for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
+	for (nd = rb_first(&session->machines->guests); nd; nd = rb_next(nd)) {
 		struct machine *pos = rb_entry(nd, struct machine, rb_node);
 		err = machine__write_buildid_table(pos, fd);
 		if (err)
@@ -261,11 +261,11 @@ int dsos__hit_all(struct perf_session *session)
 	struct rb_node *nd;
 	int err;
 
-	err = machine__hit_all_dsos(&session->machines.host);
+	err = machine__hit_all_dsos(&session->machines->host);
 	if (err)
 		return err;
 
-	for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
+	for (nd = rb_first(&session->machines->guests); nd; nd = rb_next(nd)) {
 		struct machine *pos = rb_entry(nd, struct machine, rb_node);
 
 		err = machine__hit_all_dsos(pos);
@@ -509,9 +509,9 @@ int perf_session__cache_build_ids(struct perf_session *session)
 	if (mkdir(buildid_dir, 0755) != 0 && errno != EEXIST)
 		return -1;
 
-	ret = machine__cache_build_ids(&session->machines.host);
+	ret = machine__cache_build_ids(&session->machines->host);
 
-	for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
+	for (nd = rb_first(&session->machines->guests); nd; nd = rb_next(nd)) {
 		struct machine *pos = rb_entry(nd, struct machine, rb_node);
 		ret |= machine__cache_build_ids(pos);
 	}
@@ -530,9 +530,9 @@ static bool machine__read_build_ids(struct machine *machine, bool with_hits)
 bool perf_session__read_build_ids(struct perf_session *session, bool with_hits)
 {
 	struct rb_node *nd;
-	bool ret = machine__read_build_ids(&session->machines.host, with_hits);
+	bool ret = machine__read_build_ids(&session->machines->host, with_hits);
 
-	for (nd = rb_first(&session->machines.guests); nd; nd = rb_next(nd)) {
+	for (nd = rb_first(&session->machines->guests); nd; nd = rb_next(nd)) {
 		struct machine *pos = rb_entry(nd, struct machine, rb_node);
 		ret |= machine__read_build_ids(pos, with_hits);
 	}
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 0d080a95d2ff..955bf5368751 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -58,21 +58,21 @@ void perf_session__set_id_hdr_size(struct perf_session *session)
 {
 	u16 id_hdr_size = perf_evlist__id_hdr_size(session->evlist);
 
-	machines__set_id_hdr_size(&session->machines, id_hdr_size);
+	machines__set_id_hdr_size(session->machines, id_hdr_size);
 }
 
 int perf_session__create_kernel_maps(struct perf_session *session)
 {
-	int ret = machine__create_kernel_maps(&session->machines.host);
+	int ret = machine__create_kernel_maps(&session->machines->host);
 
 	if (ret >= 0)
-		ret = machines__create_guest_kernel_maps(&session->machines);
+		ret = machines__create_guest_kernel_maps(session->machines);
 	return ret;
 }
 
 static void perf_session__destroy_kernel_maps(struct perf_session *session)
 {
-	machines__destroy_kernel_maps(&session->machines);
+	machines__destroy_kernel_maps(session->machines);
 }
 
 static bool perf_session__has_comm_exec(struct perf_session *session)
@@ -91,7 +91,7 @@ static void perf_session__set_comm_exec(struct perf_session *session)
 {
 	bool comm_exec = perf_session__has_comm_exec(session);
 
-	machines__set_comm_exec(&session->machines, comm_exec);
+	machines__set_comm_exec(session->machines, comm_exec);
 }
 
 static int ordered_events__deliver_event(struct ordered_events *oe,
@@ -123,7 +123,12 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
 	session->repipe = repipe;
 	session->tool   = tool;
 	INIT_LIST_HEAD(&session->auxtrace_index);
-	machines__init(&session->machines);
+
+	session->machines = malloc(sizeof(*session->machines));
+	if (!session->machines)
+		goto out_delete;
+
+	machines__init(session->machines);
 	ordered_events__init(&session->ordered_events, ordered_events__deliver_event);
 
 	if (file) {
@@ -168,7 +173,7 @@ struct perf_session *perf_session__new(struct perf_data_file *file,
 
 static void perf_session__delete_threads(struct perf_session *session)
 {
-	machine__delete_threads(&session->machines.host);
+	machine__delete_threads(&session->machines->host);
 }
 
 static void perf_session_env__delete(struct perf_session_env *env)
@@ -194,7 +199,8 @@ void perf_session__delete(struct perf_session *session)
 	perf_session__destroy_kernel_maps(session);
 	perf_session__delete_threads(session);
 	perf_session_env__delete(&session->header.env);
-	machines__exit(&session->machines);
+	machines__exit(session->machines);
+	free(session->machines);
 	if (session->file)
 		perf_data_file__close(session->file);
 	free(session->header.index);
@@ -1088,7 +1094,7 @@ static int perf_session__deliver_event(struct perf_session *session,
 	if (ret > 0)
 		return 0;
 
-	return machines__deliver_event(&session->machines, stats,
+	return machines__deliver_event(session->machines, stats,
 				       session->evlist, event, sample,
 				       tool, file_offset);
 }
@@ -1155,7 +1161,7 @@ int perf_session__deliver_synth_event(struct perf_session *session,
 	if (event->header.type >= PERF_RECORD_USER_TYPE_START)
 		return perf_session__process_user_event(session, event, 0);
 
-	return machines__deliver_event(&session->machines, &evlist->stats,
+	return machines__deliver_event(session->machines, &evlist->stats,
 				       evlist, event, sample, tool, 0);
 }
 
@@ -1270,14 +1276,14 @@ void perf_event_header__bswap(struct perf_event_header *hdr)
 
 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid)
 {
-	return machine__findnew_thread(&session->machines.host, -1, pid);
+	return machine__findnew_thread(&session->machines->host, -1, pid);
 }
 
 static struct thread *perf_session__register_idle_thread(struct perf_session *session)
 {
 	struct thread *thread;
 
-	thread = machine__findnew_thread(&session->machines.host, 0, 0);
+	thread = machine__findnew_thread(&session->machines->host, 0, 0);
 	if (thread == NULL || thread__set_comm(thread, "swapper", 0)) {
 		pr_err("problem inserting idle task.\n");
 		thread = NULL;
@@ -1692,13 +1698,13 @@ int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
 
 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp)
 {
-	return machines__fprintf_dsos(&session->machines, fp);
+	return machines__fprintf_dsos(session->machines, fp);
 }
 
 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
 					  bool (skip)(struct dso *dso, int parm), int parm)
 {
-	return machines__fprintf_dsos_buildid(&session->machines, fp, skip, parm);
+	return machines__fprintf_dsos_buildid(session->machines, fp, skip, parm);
 }
 
 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp)
@@ -1721,7 +1727,7 @@ size_t perf_session__fprintf(struct perf_session *session, FILE *fp)
 	 * FIXME: Here we have to actually print all the machines in this
 	 * session, not just the host...
 	 */
-	return machine__fprintf(&session->machines.host, fp);
+	return machine__fprintf(&session->machines->host, fp);
 }
 
 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index b44afc75d1cc..ac1796c7c799 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -20,7 +20,7 @@ struct itrace_synth_opts;
 
 struct perf_session {
 	struct perf_header	header;
-	struct machines		machines;
+	struct machines		*machines;
 	struct perf_evlist	*evlist;
 	struct auxtrace		*auxtrace;
 	struct itrace_synth_opts *itrace_synth_opts;
@@ -79,13 +79,13 @@ void perf_session__set_id_hdr_size(struct perf_session *session);
 static inline
 struct machine *perf_session__find_machine(struct perf_session *session, pid_t pid)
 {
-	return machines__find(&session->machines, pid);
+	return machines__find(session->machines, pid);
 }
 
 static inline
 struct machine *perf_session__findnew_machine(struct perf_session *session, pid_t pid)
 {
-	return machines__findnew(&session->machines, pid);
+	return machines__findnew(session->machines, pid);
 }
 
 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid);
-- 
2.4.0

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