When CONFIG_BPF_JIT_ALWAYS_ON is enabled, bpf_jit_enable is permanently set to 1 and setting any other value than that will return in failure. Add the above description in the help text of BPF_JIT_ALWAYS_ON, and then we can distinguish between BPF_JIT_ALWAYS_ON and BPF_JIT_DEFAULT_ON. Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> --- kernel/bpf/Kconfig | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/bpf/Kconfig b/kernel/bpf/Kconfig index d24d518..88409f8 100644 --- a/kernel/bpf/Kconfig +++ b/kernel/bpf/Kconfig @@ -58,6 +58,9 @@ config BPF_JIT_ALWAYS_ON Enables BPF JIT and removes BPF interpreter to avoid speculative execution of BPF instructions by the interpreter. + When CONFIG_BPF_JIT_ALWAYS_ON is enabled, bpf_jit_enable is permanently + set to 1 and setting any other value than that will return in failure. + config BPF_JIT_DEFAULT_ON def_bool ARCH_WANT_DEFAULT_BPF_JIT || BPF_JIT_ALWAYS_ON depends on HAVE_EBPF_JIT && BPF_JIT -- 2.1.0
