Howto configure the Linux kernel/kernel hacking?

For Linux Kernel/arm 4.14.73

> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig

> from menu, arrow down up to "Kernel hacking ---> "

> select option like "Show Timing information on printks" to show timestamp at boot

> save and re-compile to get the Uimage or Zimage updated