Provided by: systemtap-doc_2.9-2ubuntu2_all 

NAME
probe::tty.read - called when a tty line will be read
SYNOPSIS
tty.read
VALUES
driver_name
the driver name
buffer
the buffer that will receive the characters
file_name
the file name lreated to the tty
nr
The amount of characters to be read
SEE ALSO
tapset::tty(3stap)
SystemTap Tapset Reference April 2016 PROBE::TTY.READ(3stap)