perf machine: Simplify synthesize_threads method

Several tools (top, kvm) don't need to be called back to process each of
the syntheiszed records, instead relying on the machine__process_event
function to change the per machine data structures that represent
threads and mmaps, so provide a way to ask for this common idiom.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-pusqibp8n3c4ynegd1frn4zd@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-kvm.c

@@ -1544,9 +1544,8 @@ static int kvm_events_live(struct perf_kvm_stat *kvm,
 	}
 	kvm->session->evlist = kvm->evlist;
 	perf_session__set_id_hdr_size(kvm->session);
-	machine__synthesize_threads(&kvm->session->machines.host, &kvm->tool,
-				    &kvm->opts.target, kvm->evlist->threads,
-				    perf_event__process, false);
+	machine__synthesize_threads(&kvm->session->machines.host, &kvm->opts.target,
+				    kvm->evlist->threads, false);
 	err = kvm_live_open_events(kvm);
 	if (err)
 		goto out;

tools/perf/builtin-record.c

@@ -480,7 +480,7 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
 					 perf_event__synthesize_guest_os, tool);
 	}
 
-	err = machine__synthesize_threads(machine, tool, &opts->target, evsel_list->threads,
+	err = __machine__synthesize_threads(machine, tool, &opts->target, evsel_list->threads,
 					    process_synthesized_event, opts->sample_address);
 	if (err != 0)
 		goto out_delete_session;

tools/perf/builtin-top.c

@@ -950,9 +950,8 @@ static int __cmd_top(struct perf_top *top)
 	if (ret)
 		goto out_delete;
 
-	machine__synthesize_threads(&top->session->machines.host, &top->tool,
-				    &opts->target, top->evlist->threads,
-				    perf_event__process, false);
+	machine__synthesize_threads(&top->session->machines.host, &opts->target,
+				    top->evlist->threads, false);
 	ret = perf_top__start_counters(top);
 	if (ret)
 		goto out_delete;

tools/perf/builtin-trace.c

@@ -1340,7 +1340,7 @@ static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist)
 	if (trace->host == NULL)
 		return -ENOMEM;
 
-	err = machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
+	err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target,
 					    evlist->threads, trace__tool_process, false);
 	if (err)
 		symbol__exit();

tools/perf/util/machine.c

@@ -1395,7 +1395,7 @@ int machine__for_each_thread(struct machine *machine,
 	return rc;
 }
 
-int machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
+int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
 				  struct perf_target *target, struct thread_map *threads,
 				  perf_event__handler_t process, bool data_mmap)
 {

tools/perf/util/machine.h

@@ -179,7 +179,15 @@ int machine__for_each_thread(struct machine *machine,
 			     int (*fn)(struct thread *thread, void *p),
 			     void *priv);
 
-int machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
+int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
 				  struct perf_target *target, struct thread_map *threads,
 				  perf_event__handler_t process, bool data_mmap);
+static inline
+int machine__synthesize_threads(struct machine *machine, struct perf_target *target,
+				struct thread_map *threads, bool data_mmap)
+{
+	return __machine__synthesize_threads(machine, NULL, target, threads,
+					     perf_event__process, data_mmap);
+}
+
 #endif /* __PERF_MACHINE_H */