On Sat, 20 Nov 2021 13:17:08 +0100 Marco Elver <elver@xxxxxxxxxx> wrote: > I think userspace would want something other than perf tool to handle it > of course. There are several options: > > 1. Open trace pipe to be notified (/sys/kernel/tracing/trace_pipe). > This already includes the pid. I would suggest using /sys/kernel/tracing/per_cpu/cpu*/trace_pipe_raw and use libtracefs[1] to read it. -- Steve [1] https://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git/
