diff options
| author | Yonghong Song <yhs@fb.com> | 2022-11-20 20:54:26 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-11-21 00:43:37 +0100 |
| commit | cfe1456440c8feaf6558577a400745d774418379 (patch) | |
| tree | 14bb9ffb56bb894115337ecf83ca146379704cd4 /kernel/bpf/helpers.c | |
| parent | bpf: Disallow bpf_obj_new_impl call when bpf_mem_alloc_init fails (diff) | |
| download | linux-cfe1456440c8feaf6558577a400745d774418379.tar.xz linux-cfe1456440c8feaf6558577a400745d774418379.zip | |
bpf: Add support for kfunc set with common btf_ids
Later on, we will introduce kfuncs bpf_cast_to_kern_ctx() and
bpf_rdonly_cast() which apply to all program types. Currently kfunc set
only supports individual prog types. This patch added support for kfunc
applying to all program types.
Signed-off-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20221120195426.3113828-1-yhs@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/helpers.c')
| -rw-r--r-- | kernel/bpf/helpers.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index 3d4edd314450..8e0d80b6bf09 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -1901,10 +1901,19 @@ static const struct btf_kfunc_id_set generic_kfunc_set = { .set = &generic_btf_ids, }; + BTF_ID_LIST(generic_dtor_ids) BTF_ID(struct, task_struct) BTF_ID(func, bpf_task_release) +BTF_SET8_START(common_btf_ids) +BTF_SET8_END(common_btf_ids) + +static const struct btf_kfunc_id_set common_kfunc_set = { + .owner = THIS_MODULE, + .set = &common_btf_ids, +}; + static int __init kfunc_init(void) { int ret; @@ -1918,9 +1927,10 @@ static int __init kfunc_init(void) ret = register_btf_kfunc_id_set(BPF_PROG_TYPE_TRACING, &generic_kfunc_set); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_SCHED_CLS, &generic_kfunc_set); ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_STRUCT_OPS, &generic_kfunc_set); - return ret ?: register_btf_id_dtor_kfuncs(generic_dtors, + ret = ret ?: register_btf_id_dtor_kfuncs(generic_dtors, ARRAY_SIZE(generic_dtors), THIS_MODULE); + return ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_UNSPEC, &common_kfunc_set); } late_initcall(kfunc_init); |