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-rw-r--r--tools/perf/include/bpf/bpf.h16
1 files changed, 9 insertions, 7 deletions
diff --git a/tools/perf/include/bpf/bpf.h b/tools/perf/include/bpf/bpf.h
index e667577207dc..5df7ed9d9020 100644
--- a/tools/perf/include/bpf/bpf.h
+++ b/tools/perf/include/bpf/bpf.h
@@ -18,6 +18,14 @@ struct bpf_map {
unsigned int numa_node;
};
+#define bpf_map(name, _type, type_key, type_val, _max_entries) \
+struct bpf_map SEC("maps") name = { \
+ .type = BPF_MAP_TYPE_##_type, \
+ .key_size = sizeof(type_key), \
+ .value_size = sizeof(type_val), \
+ .max_entries = _max_entries, \
+}
+
/*
* FIXME: this should receive .max_entries as a parameter, as careful
* tuning of these limits is needed to avoid hitting limits that
@@ -26,13 +34,7 @@ struct bpf_map {
* For the current need, 'perf trace --filter-pids', 64 should
* be good enough, but this surely needs to be revisited.
*/
-#define pid_map(name, value_type) \
-struct bpf_map SEC("maps") name = { \
- .type = BPF_MAP_TYPE_HASH, \
- .key_size = sizeof(pid_t), \
- .value_size = sizeof(value_type), \
- .max_entries = 64, \
-}
+#define pid_map(name, value_type) bpf_map(name, HASH, pid_t, value_type, 64)
static int (*bpf_map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags) = (void *)BPF_FUNC_map_update_elem;
static void *(*bpf_map_lookup_elem)(struct bpf_map *map, void *key) = (void *)BPF_FUNC_map_lookup_elem;