crash occurs. This could be from the oops message in printk, or one could
use kexec/kdump. But these just show what happened at the time of the crash.
It can be very useful in knowing what happened up to the point of the crash.
-The tracing ring buffer, by default, is a circular buffer than will
+The tracing ring buffer, by default, is a circular buffer that will
overwrite older events with newer ones. When a crash happens, the content of
the ring buffer will be all the events that lead up to the crash.