From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Wed, 12 Apr 2023 17:53:35 +0000 (-0300)
Subject: libperf: Add a perf_cpu_map__set_nr() available as an internal function for tools... 
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b277851417e0149aff5e6986e1ad6e2d8054e4a6;p=linux.git

libperf: Add a perf_cpu_map__set_nr() available as an internal function for tools/perf to use

We'll need to reference count check 'struct perf_cpu_map', so wrap
accesses to its internal state to allow intercepting accesses to its
instances.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Link: https://lore.kernel.org/
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/lib/perf/cpumap.c b/tools/lib/perf/cpumap.c
index 0833423c243b9..6bbcbb83eb14c 100644
--- a/tools/lib/perf/cpumap.c
+++ b/tools/lib/perf/cpumap.c
@@ -10,6 +10,11 @@
 #include <ctype.h>
 #include <limits.h>
 
+void perf_cpu_map__set_nr(struct perf_cpu_map *map, int nr_cpus)
+{
+	map->nr = nr_cpus;
+}
+
 struct perf_cpu_map *perf_cpu_map__alloc(int nr_cpus)
 {
 	struct perf_cpu_map *cpus = malloc(sizeof(*cpus) + sizeof(struct perf_cpu) * nr_cpus);
diff --git a/tools/lib/perf/include/internal/cpumap.h b/tools/lib/perf/include/internal/cpumap.h
index f5bffb1f86748..b82fd6607a00e 100644
--- a/tools/lib/perf/include/internal/cpumap.h
+++ b/tools/lib/perf/include/internal/cpumap.h
@@ -28,4 +28,6 @@ struct perf_cpu_map *perf_cpu_map__alloc(int nr_cpus);
 int perf_cpu_map__idx(const struct perf_cpu_map *cpus, struct perf_cpu cpu);
 bool perf_cpu_map__is_subset(const struct perf_cpu_map *a, const struct perf_cpu_map *b);
 
+void perf_cpu_map__set_nr(struct perf_cpu_map *map, int nr_cpus);
+
 #endif /* __LIBPERF_INTERNAL_CPUMAP_H */