Re: [PATCH] livepatch: introduce klp_func called interface

[zhang warden]

> On May 21, 2024, at 16:04, Petr Mladek <pmladek@xxxxxxxx> wrote:
> 
> Another motivation to use ftrace for testing is that it does not
> affect the performance in production.
> 
> We should keep klp_ftrace_handler() as fast as possible so that we
> could livepatch also performance sensitive functions.
> 

How about using unlikely() for branch testing? If we use unlikely, maybe there is no negative effect to klp_ftrace_handler() once this function is called.

Regards,
Wardenjohn