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-rw-r--r--kernel/bpf/core.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index a64e7a207d2b..4139a0f8b558 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -656,6 +656,14 @@ void bpf_prog_free(struct bpf_prog *fp)
}
EXPORT_SYMBOL_GPL(bpf_prog_free);
+/* Weak definitions of helper functions in case we don't have bpf syscall. */
+const struct bpf_func_proto bpf_map_lookup_elem_proto __weak;
+const struct bpf_func_proto bpf_map_update_elem_proto __weak;
+const struct bpf_func_proto bpf_map_delete_elem_proto __weak;
+
+const struct bpf_func_proto bpf_get_prandom_u32_proto __weak;
+const struct bpf_func_proto bpf_get_smp_processor_id_proto __weak;
+
/* To execute LD_ABS/LD_IND instructions __bpf_prog_run() may call
* skb_copy_bits(), so provide a weak definition of it for NET-less config.
*/