diff options
Diffstat (limited to 'kernel/bpf/Makefile')
| -rw-r--r-- | kernel/bpf/Makefile | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/kernel/bpf/Makefile b/kernel/bpf/Makefile index 232cbc97434d..79cf22860a99 100644 --- a/kernel/bpf/Makefile +++ b/kernel/bpf/Makefile @@ -42,7 +42,17 @@ endif ifeq ($(CONFIG_BPF_JIT),y) obj-$(CONFIG_BPF_SYSCALL) += bpf_struct_ops.o obj-$(CONFIG_BPF_SYSCALL) += cpumask.o -obj-${CONFIG_BPF_LSM} += bpf_lsm.o +# bpf_lsm_proto.o must precede bpf_lsm.o. The current pahole logic +# deduplicates function prototypes within +# btf_encoder__add_saved_func() by keeping the first instance seen. We +# need the function prototype(s) in bpf_lsm_proto.o to take precedence +# over those within bpf_lsm.o. Having bpf_lsm_proto.o precede +# bpf_lsm.o ensures its DWARF CU is processed early, forcing the +# generated BTF to contain the overrides. +# +# Notably, this is a temporary workaround whilst the deduplication +# semantics within pahole are revisited accordingly. +obj-${CONFIG_BPF_LSM} += bpf_lsm_proto.o bpf_lsm.o endif ifneq ($(CONFIG_CRYPTO),) obj-$(CONFIG_BPF_SYSCALL) += crypto.o |