This patch collects symbols section. This section is useful when linking ELF maps.
Signed-off-by: Wang Nan <wangn...@huawei.com> --- tools/perf/util/bpf-loader.c | 11 +++++++++++ tools/perf/util/bpf-loader.h | 1 + 2 files changed, 12 insertions(+) diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c index b913d6f..b9c701a 100644 --- a/tools/perf/util/bpf-loader.c +++ b/tools/perf/util/bpf-loader.c @@ -50,6 +50,9 @@ static void bpf_obj_clear_elf(struct bpf_obj *obj) elf_end(obj->elf.elf); obj->elf.elf = NULL; } + + obj->elf.symbols = NULL; + if (obj->elf.fd >= 0) { close(obj->elf.fd); obj->elf.fd = -1; @@ -312,6 +315,14 @@ static int bpf_obj_elf_collect(struct bpf_obj *obj) else if (strcmp(name, "config") == 0) err = bpf_obj_config_init(obj, data->d_buf, data->d_size); + else if (sh.sh_type == SHT_SYMTAB) { + if (obj->elf.symbols) { + pr_err("bpf: multiple SYMTAB in %s\n", + obj->path); + err = -EEXIST; + } else + obj->elf.symbols = data; + } if (err) goto out; } diff --git a/tools/perf/util/bpf-loader.h b/tools/perf/util/bpf-loader.h index 086f28d..f0b573c 100644 --- a/tools/perf/util/bpf-loader.h +++ b/tools/perf/util/bpf-loader.h @@ -38,6 +38,7 @@ struct bpf_obj { int fd; Elf *elf; GElf_Ehdr ehdr; + Elf_Data *symbols; } elf; }; #define obj_elf_valid(o) ((o)->elf.fd >= 0) -- 1.8.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/