On 09/02/24 1:26 am, Stanislav Fomichev wrote:
On 02/08, Hari Bathini wrote:
Compiling with CONFIG_BPF_SYSCALL & !CONFIG_BPF_JIT throws the below
warning:
"WARN: resolve_btfids: unresolved symbol bpf_cpumask"
Fix it by adding the appropriate #ifdef.
Can you explain a bit more on why CONFIG_BPF_JIT is appropriate here?
kernel/bpf/cpumask.c seems to be gated by CONFIG_BPF_SYSCALL.
So presumably all those symbols should be still compiled in with !CONFIG_BPF_JIT?
Actually, CONFIG_BPF_JIT is the precondition for cpumask.c
where bpf_cpumask structure is defined.
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
endif
Thanks
Hari
