Post Syndicated from original https://lwn.net/Articles/892611/

There is a long and growing list of options for getting information out of
the kernel but, in the real world, print statements still tend to be the
tool of choice. The kernel’s printk()
function
often comes up short, despite the fact that it provides a set of
kernel-specific features, so there has, for some time, been interest in
better APIs for textual output from the kernel. The “printbuf”
proposal from Kent Overstreet is one step in that direction, but will
need some changes to make it work well with features the kernel already
has.