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| author | Jiri Olsa <jolsa@kernel.org> | 2020-08-25 22:21:12 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-08-26 01:37:41 +0300 |
| commit | a5f53b1d59c2fd35ebb55bbe47b05d596c0d466c (patch) | |
| tree | 08dea3308f1c0f0c847d21997065fffe4642e610 /tools/bpf/resolve_btfids | |
| parent | 193a983c5bc4c62f66d62a9a6f9084cf3f2a0db2 (diff) | |
| download | linux-a5f53b1d59c2fd35ebb55bbe47b05d596c0d466c.tar.xz | |
tools resolve_btfids: Add support for set symbols
The set symbol does not have the unique number suffix,
so we need to give it a special parsing function.
This was omitted in the first batch, because there was
no set support yet, so it slipped in the testing.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200825192124.710397-3-jolsa@kernel.org
Diffstat (limited to 'tools/bpf/resolve_btfids')
| -rw-r--r-- | tools/bpf/resolve_btfids/main.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/tools/bpf/resolve_btfids/main.c b/tools/bpf/resolve_btfids/main.c index 35a172d3d80d..6152d1356d7b 100644 --- a/tools/bpf/resolve_btfids/main.c +++ b/tools/bpf/resolve_btfids/main.c @@ -227,6 +227,24 @@ static char *get_id(const char *prefix_end) return id; } +static struct btf_id *add_set(struct object *obj, char *name) +{ + /* + * __BTF_ID__set__name + * name = ^ + * id = ^ + */ + char *id = name + sizeof(BTF_SET "__") - 1; + int len = strlen(name); + + if (id >= name + len) { + pr_err("FAILED to parse set name: %s\n", name); + return NULL; + } + + return btf_id__add(&obj->sets, id, true); +} + static struct btf_id *add_symbol(struct rb_root *root, char *name, size_t size) { char *id; @@ -383,7 +401,7 @@ static int symbols_collect(struct object *obj) id = add_symbol(&obj->funcs, prefix, sizeof(BTF_FUNC) - 1); /* set */ } else if (!strncmp(prefix, BTF_SET, sizeof(BTF_SET) - 1)) { - id = add_symbol(&obj->sets, prefix, sizeof(BTF_SET) - 1); + id = add_set(obj, prefix); /* * SET objects store list's count, which is encoded * in symbol's size, together with 'cnt' field hence |