perf thread_map: Reduce exposure of libperf internal API

Remove unnecessary include of internal threadmap.h and refcount.h in
thread_map.h. Switch to using public APIs when possible or including
the internal header file in the C file. Fix a transitive dependency in
openat-syscall.c broken by the clean up.

Signed-off-by: Ian Rogers <[e-mail]>
Acked-by: Namhyung Kim <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Andrii Nakryiko <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Masahiro Yamada <[e-mail]>
Cc: Nick Desaulniers <[e-mail]>
Cc: Nicolas Schier <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Stephane Eranian <[e-mail]>
Cc: [e-mail]
Link: http://lore.kernel.org/lkml/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-stat.c

···
 
 #include <linux/ctype.h>
 #include <perf/evlist.h>
+#include <internal/threadmap.h>
 
 #define DEFAULT_SEPARATOR	" "
 #define FREEZE_ON_SMI_PATH	"devices/cpu/freeze_on_smi"

tools/perf/builtin-trace.c

···
 	}
 
 	trace->multiple_threads = perf_thread_map__pid(evlist->core.threads, 0) == -1 ||
-				  evlist->core.threads->nr > 1 ||
-				  evlist__first(evlist)->core.attr.inherit;
+		perf_thread_map__nr(evlist->core.threads) > 1 ||
+		evlist__first(evlist)->core.attr.inherit;
 
 	/*
 	 * Now that we already used evsel->core.attr to ask the kernel to setup the

tools/perf/tests/openat-syscall.c

···
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include "thread_map.h"
 #include "evsel.h"
 #include "debug.h"

tools/perf/tests/thread-map.c

···
 #include "util/synthetic-events.h"
 #include <linux/zalloc.h>
 #include <perf/event.h>
+#include <internal/threadmap.h>
 
 struct perf_sample;
 struct perf_tool;

tools/perf/util/bpf_counter.c

···
 
 		if (filter_type == BPERF_FILTER_PID ||
 		    filter_type == BPERF_FILTER_TGID)
-			key = evsel->core.threads->map[i].pid;
+			key = perf_thread_map__pid(evsel->core.threads, i);
 		else if (filter_type == BPERF_FILTER_CPU)
 			key = evsel->core.cpus->map[i].cpu;
 		else

tools/perf/util/evsel.c

···
 #include "util/parse-branch-options.h"
 #include <internal/xyarray.h>
 #include <internal/lib.h>
+#include <internal/threadmap.h>
 
 #include <linux/ctype.h>
 

tools/perf/util/python.c

···
 {
 	struct pyrf_thread_map *pthreads = (void *)obj;
 
-	return pthreads->threads->nr;
+	return perf_thread_map__nr(pthreads->threads);
 }
 
 static PyObject *pyrf_thread_map__item(PyObject *obj, Py_ssize_t i)
 {
 	struct pyrf_thread_map *pthreads = (void *)obj;
 
-	if (i >= pthreads->threads->nr)
+	if (i >= perf_thread_map__nr(pthreads->threads))
 		return NULL;
 
-	return Py_BuildValue("i", pthreads->threads->map[i]);
+	return Py_BuildValue("i", perf_thread_map__pid(pthreads->threads, i));
 }
 
 static PySequenceMethods pyrf_thread_map__sequence_methods = {

tools/perf/util/scripting-engines/trace-event-python.c

···
 	struct perf_cpu_map *cpus = counter->core.cpus;
 	int cpu, thread;
 
-	for (thread = 0; thread < threads->nr; thread++) {
+	for (thread = 0; thread < perf_thread_map__nr(threads); thread++) {
 		for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) {
 			process_stat(counter, perf_cpu_map__cpu(cpus, cpu),
 				     perf_thread_map__pid(threads, thread), tstamp,

tools/perf/util/thread_map.c

···
 #include "thread_map.h"
 #include "debug.h"
 #include "event.h"
+#include <internal/threadmap.h>
 
 /* Skip "." and ".." directories */
 static int filter(const struct dirent *dir)

tools/perf/util/thread_map.h

···
 
 #include <sys/types.h>
 #include <stdio.h>
-#include <linux/refcount.h>
-#include <internal/threadmap.h>
 #include <perf/threadmap.h>
 
 struct perf_record_thread_map;