> 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
