[PATCH] perflib: deprecate bpf_map__resize in favor of bpf_map_set_max_entries

From: Muhammad Falak R Wani
Date: Sun Aug 15 2021 - 06:37:06 EST


As a part of libbpf 1.0 plan[0], this patch deprecates use of
bpf_map__resize in favour of bpf_map__set_max_entries.

Reference: https://github.com/libbpf/libbpf/issues/304
[0]: https://github.com/libbpf/libbpf/wiki/Libbpf:-the-road-to-v1.0#libbpfh-high-level-apis

Signed-off-by: Muhammad Falak R Wani <falakreyaz@xxxxxxxxx>
---
tools/perf/util/bpf_counter.c | 8 ++++----
tools/perf/util/bpf_counter_cgroup.c | 8 ++++----
2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/tools/perf/util/bpf_counter.c b/tools/perf/util/bpf_counter.c
index ba0f20853651..ced2dac31dcf 100644
--- a/tools/perf/util/bpf_counter.c
+++ b/tools/perf/util/bpf_counter.c
@@ -127,9 +127,9 @@ static int bpf_program_profiler_load_one(struct evsel *evsel, u32 prog_id)

skel->rodata->num_cpu = evsel__nr_cpus(evsel);

- bpf_map__resize(skel->maps.events, evsel__nr_cpus(evsel));
- bpf_map__resize(skel->maps.fentry_readings, 1);
- bpf_map__resize(skel->maps.accum_readings, 1);
+ bpf_map__set_max_entries(skel->maps.events, evsel__nr_cpus(evsel));
+ bpf_map__set_max_entries(skel->maps.fentry_readings, 1);
+ bpf_map__set_max_entries(skel->maps.accum_readings, 1);

prog_name = bpf_target_prog_name(prog_fd);
if (!prog_name) {
@@ -399,7 +399,7 @@ static int bperf_reload_leader_program(struct evsel *evsel, int attr_map_fd,
return -1;
}

- bpf_map__resize(skel->maps.events, libbpf_num_possible_cpus());
+ bpf_map__set_max_entries(skel->maps.events, libbpf_num_possible_cpus());
err = bperf_leader_bpf__load(skel);
if (err) {
pr_err("Failed to load leader skeleton\n");
diff --git a/tools/perf/util/bpf_counter_cgroup.c b/tools/perf/util/bpf_counter_cgroup.c
index 89aa5e71db1a..cbc6c2bca488 100644
--- a/tools/perf/util/bpf_counter_cgroup.c
+++ b/tools/perf/util/bpf_counter_cgroup.c
@@ -65,14 +65,14 @@ static int bperf_load_program(struct evlist *evlist)

/* we need one copy of events per cpu for reading */
map_size = total_cpus * evlist->core.nr_entries / nr_cgroups;
- bpf_map__resize(skel->maps.events, map_size);
- bpf_map__resize(skel->maps.cgrp_idx, nr_cgroups);
+ bpf_map__set_max_entries(skel->maps.events, map_size);
+ bpf_map__set_max_entries(skel->maps.cgrp_idx, nr_cgroups);
/* previous result is saved in a per-cpu array */
map_size = evlist->core.nr_entries / nr_cgroups;
- bpf_map__resize(skel->maps.prev_readings, map_size);
+ bpf_map__set_max_entries(skel->maps.prev_readings, map_size);
/* cgroup result needs all events (per-cpu) */
map_size = evlist->core.nr_entries;
- bpf_map__resize(skel->maps.cgrp_readings, map_size);
+ bpf_map__set_max_entries(skel->maps.cgrp_readings, map_size);

set_max_rlimit();

--
2.17.1