tracing: add flag output for kmem events (Thanks to Frederic Weisbecker for pointing out that the first version Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
tracing: add __print_flags for events Frederic Weisbecker's idea of using a mask instead of bits, Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>