diff options
| author | Mykyta Yatsenko <yatsenko@meta.com> | 2026-06-05 04:41:25 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-06-05 08:00:08 -0700 |
| commit | 6e46ff0abefde32c2341ca2c61ab1f8855e8cac9 (patch) | |
| tree | b29d0d374933e070757bd33240274b7fbb402359 | |
| parent | 9dcbb5045fe5a00f04c99aede5a10726f8bb937b (diff) | |
libbpf: Support resizable hashtable
Add BPF_MAP_TYPE_RHASH to libbpf's map type name table and feature
probing so that libbpf-based tools can create and identify resizable
hash maps.
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20260605-rhash-v7-8-5b8e05f8630d@meta.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 1 | ||||
| -rw-r--r-- | tools/lib/bpf/libbpf_probes.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index ab2071fdd3e8..1354bcbc8b30 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -192,6 +192,7 @@ static const char * const map_type_name[] = { [BPF_MAP_TYPE_CGRP_STORAGE] = "cgrp_storage", [BPF_MAP_TYPE_ARENA] = "arena", [BPF_MAP_TYPE_INSN_ARRAY] = "insn_array", + [BPF_MAP_TYPE_RHASH] = "rhash", }; static const char * const prog_type_name[] = { diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c index b70d9637ecf5..e40819465ddc 100644 --- a/tools/lib/bpf/libbpf_probes.c +++ b/tools/lib/bpf/libbpf_probes.c @@ -309,6 +309,9 @@ static int probe_map_create(enum bpf_map_type map_type) value_size = sizeof(__u64); opts.map_flags = BPF_F_NO_PREALLOC; break; + case BPF_MAP_TYPE_RHASH: + opts.map_flags = BPF_F_NO_PREALLOC; + break; case BPF_MAP_TYPE_CGROUP_STORAGE: case BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE: key_size = sizeof(struct bpf_cgroup_storage_key); |