[PATCH v2 2/6] perf cpumap: Synthetic events and const/static

From: Ian Rogers
Date: Tue Jun 14 2022 - 10:35:28 EST


Make the cpumap arguments const to make it clearer they are in rather
than out arguments. Make two functions static and remove external
declarations.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/util/event.h | 4 ----
tools/perf/util/synthetic-events.c | 20 +++++++++++---------
tools/perf/util/synthetic-events.h | 2 +-
3 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index cdd72e05fd28..2a69e639f6b3 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -461,10 +461,6 @@ size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FIL
int kallsyms__get_function_start(const char *kallsyms_filename,
const char *symbol_name, u64 *addr);

-void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int *max);
-void cpu_map_data__synthesize(struct perf_record_cpu_map_data *data, struct perf_cpu_map *map,
- u16 type, int max);
-
void event_attr_init(struct perf_event_attr *attr);

int perf_event_paranoid(void);
diff --git a/tools/perf/util/synthetic-events.c b/tools/perf/util/synthetic-events.c
index 27acdc5e5723..b8a42a096502 100644
--- a/tools/perf/util/synthetic-events.c
+++ b/tools/perf/util/synthetic-events.c
@@ -1184,7 +1184,7 @@ int perf_event__synthesize_thread_map2(struct perf_tool *tool,
}

static void synthesize_cpus(struct cpu_map_entries *cpus,
- struct perf_cpu_map *map)
+ const struct perf_cpu_map *map)
{
int i, map_nr = perf_cpu_map__nr(map);

@@ -1195,7 +1195,7 @@ static void synthesize_cpus(struct cpu_map_entries *cpus,
}

static void synthesize_mask(struct perf_record_record_cpu_map *mask,
- struct perf_cpu_map *map, int max)
+ const struct perf_cpu_map *map, int max)
{
int i;

@@ -1206,12 +1206,12 @@ static void synthesize_mask(struct perf_record_record_cpu_map *mask,
set_bit(perf_cpu_map__cpu(map, i).cpu, mask->mask);
}

-static size_t cpus_size(struct perf_cpu_map *map)
+static size_t cpus_size(const struct perf_cpu_map *map)
{
return sizeof(struct cpu_map_entries) + perf_cpu_map__nr(map) * sizeof(u16);
}

-static size_t mask_size(struct perf_cpu_map *map, int *max)
+static size_t mask_size(const struct perf_cpu_map *map, int *max)
{
int i;

@@ -1228,7 +1228,8 @@ static size_t mask_size(struct perf_cpu_map *map, int *max)
return sizeof(struct perf_record_record_cpu_map) + BITS_TO_LONGS(*max) * sizeof(long);
}

-void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int *max)
+static void *cpu_map_data__alloc(const struct perf_cpu_map *map, size_t *size,
+ u16 *type, int *max)
{
size_t size_cpus, size_mask;
bool is_dummy = perf_cpu_map__empty(map);
@@ -1262,8 +1263,9 @@ void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int
return zalloc(*size);
}

-void cpu_map_data__synthesize(struct perf_record_cpu_map_data *data, struct perf_cpu_map *map,
- u16 type, int max)
+static void cpu_map_data__synthesize(struct perf_record_cpu_map_data *data,
+ const struct perf_cpu_map *map,
+ u16 type, int max)
{
data->type = type;

@@ -1278,7 +1280,7 @@ void cpu_map_data__synthesize(struct perf_record_cpu_map_data *data, struct perf
}
}

-static struct perf_record_cpu_map *cpu_map_event__new(struct perf_cpu_map *map)
+static struct perf_record_cpu_map *cpu_map_event__new(const struct perf_cpu_map *map)
{
size_t size = sizeof(struct perf_record_cpu_map);
struct perf_record_cpu_map *event;
@@ -1298,7 +1300,7 @@ static struct perf_record_cpu_map *cpu_map_event__new(struct perf_cpu_map *map)
}

int perf_event__synthesize_cpu_map(struct perf_tool *tool,
- struct perf_cpu_map *map,
+ const struct perf_cpu_map *map,
perf_event__handler_t process,
struct machine *machine)
{
diff --git a/tools/perf/util/synthetic-events.h b/tools/perf/util/synthetic-events.h
index 78a0450db164..44839190234a 100644
--- a/tools/perf/util/synthetic-events.h
+++ b/tools/perf/util/synthetic-events.h
@@ -46,7 +46,7 @@ typedef int (*perf_event__handler_t)(struct perf_tool *tool, union perf_event *e
int perf_event__synthesize_attrs(struct perf_tool *tool, struct evlist *evlist, perf_event__handler_t process);
int perf_event__synthesize_attr(struct perf_tool *tool, struct perf_event_attr *attr, u32 ids, u64 *id, perf_event__handler_t process);
int perf_event__synthesize_build_id(struct perf_tool *tool, struct dso *pos, u16 misc, perf_event__handler_t process, struct machine *machine);
-int perf_event__synthesize_cpu_map(struct perf_tool *tool, struct perf_cpu_map *cpus, perf_event__handler_t process, struct machine *machine);
+int perf_event__synthesize_cpu_map(struct perf_tool *tool, const struct perf_cpu_map *cpus, perf_event__handler_t process, struct machine *machine);
int perf_event__synthesize_event_update_cpus(struct perf_tool *tool, struct evsel *evsel, perf_event__handler_t process);
int perf_event__synthesize_event_update_name(struct perf_tool *tool, struct evsel *evsel, perf_event__handler_t process);
int perf_event__synthesize_event_update_scale(struct perf_tool *tool, struct evsel *evsel, perf_event__handler_t process);
--
2.36.1.476.g0c4daa206d-goog