libperf: Add perf_cpu_map__dummy_new() function

Move cpu_map__dummy_new() to libperf as perf_cpu_map__dummy_new() function.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-30-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

3 files changed, 18 insertions, 0 deletions

diff --git a/tools/perf/lib/cpumap.c b/tools/perf/lib/cpumap.c
index 86a199c26f20..80d587ab95aa 100644
--- a/tools/perf/lib/cpumap.c
+++ b/tools/perf/lib/cpumap.c
@@ -3,3 +3,16 @@
 #include <stdlib.h>
 #include <linux/refcount.h>
 #include <internal/cpumap.h>
+
+struct perf_cpu_map *perf_cpu_map__dummy_new(void)
+{
+        struct perf_cpu_map *cpus = malloc(sizeof(*cpus) + sizeof(int));
+
+        if (cpus != NULL) {
+                cpus->nr = 1;
+                cpus->map[0] = -1;
+                refcount_set(&cpus->refcnt, 1);
+        }
+
+        return cpus;
+}
diff --git a/tools/perf/lib/include/perf/cpumap.h b/tools/perf/lib/include/perf/cpumap.h
index 8355d3ce7d0c..fa1e5aa9d662 100644
--- a/tools/perf/lib/include/perf/cpumap.h
+++ b/tools/perf/lib/include/perf/cpumap.h
@@ -2,6 +2,10 @@
 #ifndef __LIBPERF_CPUMAP_H
 #define __LIBPERF_CPUMAP_H
 
+#include <perf/core.h>
+
 struct perf_cpu_map;
 
+LIBPERF_API struct perf_cpu_map *perf_cpu_map__dummy_new(void);
+
 #endif /* __LIBPERF_CPUMAP_H */
diff --git a/tools/perf/lib/libperf.map b/tools/perf/lib/libperf.map
index 3536242c545c..65201c6cbe7e 100644
--- a/tools/perf/lib/libperf.map
+++ b/tools/perf/lib/libperf.map
@@ -1,6 +1,7 @@
 LIBPERF_0.0.1 {
         global:
                 libperf_set_print;
+                perf_cpu_map__dummy_new;
         local:
                 *;
 };