On Fri, 30 Oct 2020 14:47:56 -0700 Atish Patra <atishp@xxxxxxxxxxxxxx> wrote: > > Look at arm64, they __kprobes flag and I guess it would also prevent > > ftrace call site. > > > > Are you sure about that ? __kprobes puts the code in .kprobes.text section > which is under whitelist sections in recordmcount.pl & recordmcount.c. Correct, ftrace can trace functions marked with __kprobes. That said, the instruction you are looking at here, is in a file that is blacklisted from recordmcount. CFLAGS_REMOVE_insn.o = $(CC_FLAGS_FTRACE) All ftrace flags are removed from the compiling of insn.c, and every function in that file will not be traced. -- Steve
