Re: [RFC PATCH bpf-next v2 3/4] error-injection: Separate error-injection from kprobe

From: Alexei Starovoitov
Date: Tue Dec 26 2017 - 21:07:17 EST

On Tue, Dec 26, 2017 at 04:47:55PM +0900, Masami Hiramatsu wrote:
> Since error-injection framework is not limited to be used
> by kprobes, nor bpf. Other kernel subsystems can use it
> freely for checking safeness of error-injection, e.g.
> livepatch, ftrace etc.
> So this separate error-injection framework from kprobes.
> Some differences has been made:
> - "kprobe" word is removed from any APIs/structures.
> - BPF_ALLOW_ERROR_INJECTION() is renamed to
> ALLOW_ERROR_INJECTION() since it is not limited for BPF too.
> - CONFIG_FUNCTION_ERROR_INJECTION is the config item of this
> feature. It is automatically enabled if the arch supports
> error injection feature for kprobe or ftrace etc.
> Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
> ---
> Changes in v2:
> - Fix the override function name to override_function_with_return()
> - Show only function name in the list, user don't have to care about
> it's size, since function override only happens at the entry.

looks like nice cleanup.
Acked-by: Alexei Starovoitov <ast@xxxxxxxxxx>