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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1713d68b3b
This adds libbpf support for BTF Var and DataSec kinds. Main point here is that libbpf needs to do some preparatory work before the whole BTF object can be loaded into the kernel, that is, fixing up of DataSec size taken from the ELF section size and non-static variable offset which needs to be taken from the ELF's string section. Upstream LLVM doesn't fix these up since at time of BTF emission it is too early in the compilation process thus this information isn't available yet, hence loader needs to take care of it. Note, deduplication handling has not been in the scope of this work and needs to be addressed in a future commit. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://reviews.llvm.org/D59441 Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
167 lines
3.7 KiB
Plaintext
167 lines
3.7 KiB
Plaintext
LIBBPF_0.0.1 {
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global:
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bpf_btf_get_fd_by_id;
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bpf_create_map;
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bpf_create_map_in_map;
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bpf_create_map_in_map_node;
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bpf_create_map_name;
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bpf_create_map_node;
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bpf_create_map_xattr;
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bpf_load_btf;
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bpf_load_program;
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bpf_load_program_xattr;
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bpf_map__btf_key_type_id;
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bpf_map__btf_value_type_id;
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bpf_map__def;
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bpf_map__fd;
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bpf_map__is_offload_neutral;
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bpf_map__name;
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bpf_map__next;
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bpf_map__pin;
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bpf_map__prev;
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bpf_map__priv;
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bpf_map__reuse_fd;
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bpf_map__set_ifindex;
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bpf_map__set_inner_map_fd;
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bpf_map__set_priv;
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bpf_map__unpin;
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bpf_map_delete_elem;
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bpf_map_get_fd_by_id;
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bpf_map_get_next_id;
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bpf_map_get_next_key;
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bpf_map_lookup_and_delete_elem;
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bpf_map_lookup_elem;
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bpf_map_update_elem;
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bpf_obj_get;
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bpf_obj_get_info_by_fd;
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bpf_obj_pin;
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bpf_object__btf_fd;
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bpf_object__close;
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bpf_object__find_map_by_name;
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bpf_object__find_map_by_offset;
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bpf_object__find_program_by_title;
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bpf_object__kversion;
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bpf_object__load;
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bpf_object__name;
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bpf_object__next;
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bpf_object__open;
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bpf_object__open_buffer;
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bpf_object__open_xattr;
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bpf_object__pin;
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bpf_object__pin_maps;
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bpf_object__pin_programs;
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bpf_object__priv;
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bpf_object__set_priv;
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bpf_object__unload;
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bpf_object__unpin_maps;
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bpf_object__unpin_programs;
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bpf_perf_event_read_simple;
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bpf_prog_attach;
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bpf_prog_detach;
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bpf_prog_detach2;
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bpf_prog_get_fd_by_id;
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bpf_prog_get_next_id;
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bpf_prog_load;
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bpf_prog_load_xattr;
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bpf_prog_query;
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bpf_prog_test_run;
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bpf_prog_test_run_xattr;
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bpf_program__fd;
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bpf_program__is_kprobe;
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bpf_program__is_perf_event;
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bpf_program__is_raw_tracepoint;
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bpf_program__is_sched_act;
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bpf_program__is_sched_cls;
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bpf_program__is_socket_filter;
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bpf_program__is_tracepoint;
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bpf_program__is_xdp;
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bpf_program__load;
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bpf_program__next;
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bpf_program__nth_fd;
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bpf_program__pin;
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bpf_program__pin_instance;
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bpf_program__prev;
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bpf_program__priv;
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bpf_program__set_expected_attach_type;
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bpf_program__set_ifindex;
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bpf_program__set_kprobe;
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bpf_program__set_perf_event;
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bpf_program__set_prep;
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bpf_program__set_priv;
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bpf_program__set_raw_tracepoint;
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bpf_program__set_sched_act;
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bpf_program__set_sched_cls;
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bpf_program__set_socket_filter;
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bpf_program__set_tracepoint;
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bpf_program__set_type;
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bpf_program__set_xdp;
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bpf_program__title;
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bpf_program__unload;
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bpf_program__unpin;
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bpf_program__unpin_instance;
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bpf_prog_linfo__free;
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bpf_prog_linfo__new;
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bpf_prog_linfo__lfind_addr_func;
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bpf_prog_linfo__lfind;
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bpf_raw_tracepoint_open;
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bpf_set_link_xdp_fd;
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bpf_task_fd_query;
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bpf_verify_program;
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btf__fd;
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btf__find_by_name;
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btf__free;
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btf__get_from_id;
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btf__name_by_offset;
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btf__new;
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btf__resolve_size;
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btf__resolve_type;
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btf__type_by_id;
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libbpf_attach_type_by_name;
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libbpf_get_error;
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libbpf_prog_type_by_name;
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libbpf_set_print;
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libbpf_strerror;
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local:
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*;
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};
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LIBBPF_0.0.2 {
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global:
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bpf_probe_helper;
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bpf_probe_map_type;
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bpf_probe_prog_type;
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bpf_map__resize;
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bpf_map_lookup_elem_flags;
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bpf_object__btf;
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bpf_object__find_map_fd_by_name;
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bpf_get_link_xdp_id;
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btf__dedup;
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btf__get_map_kv_tids;
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btf__get_nr_types;
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btf__get_raw_data;
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btf__load;
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btf_ext__free;
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btf_ext__func_info_rec_size;
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btf_ext__get_raw_data;
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btf_ext__line_info_rec_size;
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btf_ext__new;
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btf_ext__reloc_func_info;
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btf_ext__reloc_line_info;
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xsk_umem__create;
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xsk_socket__create;
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xsk_umem__delete;
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xsk_socket__delete;
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xsk_umem__fd;
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xsk_socket__fd;
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bpf_program__get_prog_info_linear;
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bpf_program__bpil_addr_to_offs;
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bpf_program__bpil_offs_to_addr;
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} LIBBPF_0.0.1;
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LIBBPF_0.0.3 {
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global:
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bpf_map__is_internal;
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bpf_map_freeze;
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btf__finalize_data;
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} LIBBPF_0.0.2;
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