[PATCH V2] tools/perf/builtin-lock: Fix return code for functions in __cmd_contention

[Namhyung Kim]

On Fri, 10 Jan 2025 15:07:30 +0530, Athira Rajeev wrote:

> perf lock contention returns zero exit value even if the lock contention
> BPF setup failed.
> 
>   # ./perf lock con -b true
>   libbpf: kernel BTF is missing at '/sys/kernel/btf/vmlinux', was CONFIG_DEBUG_INFO_BTF enabled?
>   libbpf: failed to find '.BTF' ELF section in /lib/modules/6.13.0-rc3+/build/vmlinux
>   libbpf: failed to find valid kernel BTF
>   libbpf: kernel BTF is missing at '/sys/kernel/btf/vmlinux', was CONFIG_DEBUG_INFO_BTF enabled?
>   libbpf: failed to find '.BTF' ELF section in /lib/modules/6.13.0-rc3+/build/vmlinux
>   libbpf: failed to find valid kernel BTF
>   libbpf: Error loading vmlinux BTF: -ESRCH
>   libbpf: failed to load object 'lock_contention_bpf'
>   libbpf: failed to load BPF skeleton 'lock_contention_bpf': -ESRCH
>   Failed to load lock-contention BPF skeleton
>   lock contention BPF setup failed
>   # echo $?
>    0
> 
> [...]

Applied to perf-tools-next, thanks!

Best regards,
Namhyung