7 files changed, 38 insertions, 1 deletions

diff --git a/tools/perf/lib/cpumap.c b/tools/perf/lib/cpumap.c
index 1ddb69e796e5..2834753576b2 100644
--- a/tools/perf/lib/cpumap.c
+++ b/tools/perf/lib/cpumap.c
@@ -237,3 +237,20 @@ int perf_cpu_map__nr(const struct perf_cpu_map *cpus)
 {
 	return cpus ? cpus->nr : 1;
 }
+
+bool perf_cpu_map__empty(const struct perf_cpu_map *map)
+{
+	return map ? map->map[0] == -1 : true;
+}
+
+int perf_cpu_map__idx(struct perf_cpu_map *cpus, int cpu)
+{
+	int i;
+
+	for (i = 0; i < cpus->nr; ++i) {
+		if (cpus->map[i] == cpu)
+			return i;
+	}
+
+	return -1;
+}
diff --git a/tools/perf/lib/include/internal/cpumap.h b/tools/perf/lib/include/internal/cpumap.h
index 3306319f7df8..840d4032587b 100644
--- a/tools/perf/lib/include/internal/cpumap.h
+++ b/tools/perf/lib/include/internal/cpumap.h
@@ -14,4 +14,6 @@ struct perf_cpu_map {
 #define MAX_NR_CPUS	2048
 #endif
 
+int perf_cpu_map__idx(struct perf_cpu_map *cpus, int cpu);
+
 #endif /* __LIBPERF_INTERNAL_CPUMAP_H */
diff --git a/tools/perf/lib/include/internal/xyarray.h b/tools/perf/lib/include/internal/xyarray.h
index 3bf70e4d474c..51e35d6c8ec4 100644
--- a/tools/perf/lib/include/internal/xyarray.h
+++ b/tools/perf/lib/include/internal/xyarray.h
@@ -2,6 +2,7 @@
 #ifndef __LIBPERF_INTERNAL_XYARRAY_H
 #define __LIBPERF_INTERNAL_XYARRAY_H
 
+#include <linux/compiler.h>
 #include <sys/types.h>
 
 struct xyarray {
@@ -10,7 +11,7 @@ struct xyarray {
 	size_t entries;
 	size_t max_x;
 	size_t max_y;
-	char contents[];
+	char contents[] __aligned(8);
 };
 
 struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size);
diff --git a/tools/perf/lib/include/perf/cpumap.h b/tools/perf/lib/include/perf/cpumap.h
index 1b6e7db3fa2b..8aa995c59498 100644
--- a/tools/perf/lib/include/perf/cpumap.h
+++ b/tools/perf/lib/include/perf/cpumap.h
@@ -4,6 +4,7 @@
 
 #include <perf/core.h>
 #include <stdio.h>
+#include <stdbool.h>
 
 struct perf_cpu_map;
 
@@ -14,6 +15,7 @@ LIBPERF_API struct perf_cpu_map *perf_cpu_map__get(struct perf_cpu_map *map);
 LIBPERF_API void perf_cpu_map__put(struct perf_cpu_map *map);
 LIBPERF_API int perf_cpu_map__cpu(const struct perf_cpu_map *cpus, int idx);
 LIBPERF_API int perf_cpu_map__nr(const struct perf_cpu_map *cpus);
+LIBPERF_API bool perf_cpu_map__empty(const struct perf_cpu_map *map);
 
 #define perf_cpu_map__for_each_cpu(cpu, idx, cpus)		\
 	for ((idx) = 0, (cpu) = perf_cpu_map__cpu(cpus, idx);	\
diff --git a/tools/perf/lib/include/perf/threadmap.h b/tools/perf/lib/include/perf/threadmap.h
index 456295273daa..a7c50de8d010 100644
--- a/tools/perf/lib/include/perf/threadmap.h
+++ b/tools/perf/lib/include/perf/threadmap.h
@@ -11,6 +11,8 @@ LIBPERF_API struct perf_thread_map *perf_thread_map__new_dummy(void);
 
 LIBPERF_API void perf_thread_map__set_pid(struct perf_thread_map *map, int thread, pid_t pid);
 LIBPERF_API char *perf_thread_map__comm(struct perf_thread_map *map, int thread);
+LIBPERF_API int perf_thread_map__nr(struct perf_thread_map *threads);
+LIBPERF_API pid_t perf_thread_map__pid(struct perf_thread_map *map, int thread);
 
 LIBPERF_API struct perf_thread_map *perf_thread_map__get(struct perf_thread_map *map);
 LIBPERF_API void perf_thread_map__put(struct perf_thread_map *map);
diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map
index e24d3cec01c1..dc4d66363bc4 100644
--- a/tools/perf/lib/libperf.map
+++ b/tools/perf/lib/libperf.map
@@ -8,9 +8,12 @@ LIBPERF_0.0.1 {
 		perf_cpu_map__read;
 		perf_cpu_map__nr;
 		perf_cpu_map__cpu;
+		perf_cpu_map__empty;
 		perf_thread_map__new_dummy;
 		perf_thread_map__set_pid;
 		perf_thread_map__comm;
+		perf_thread_map__nr;
+		perf_thread_map__pid;
 		perf_thread_map__get;
 		perf_thread_map__put;
 		perf_evsel__new;
diff --git a/tools/perf/lib/threadmap.c b/tools/perf/lib/threadmap.c
index 4865b73e2586..e92c368b0a6c 100644
--- a/tools/perf/lib/threadmap.c
+++ b/tools/perf/lib/threadmap.c
@@ -79,3 +79,13 @@ void perf_thread_map__put(struct perf_thread_map *map)
 	if (map && refcount_dec_and_test(&map->refcnt))
 		perf_thread_map__delete(map);
 }
+
+int perf_thread_map__nr(struct perf_thread_map *threads)
+{
+	return threads ? threads->nr : 1;
+}
+
+pid_t perf_thread_map__pid(struct perf_thread_map *map, int thread)
+{
+	return map->map[thread].pid;
+}