On Fri, 8 Oct 2021 15:42:31 -0700 Andrii Nakryiko <andrii.nakryiko@xxxxxxxxx> wrote: > orgot to actually cc Steven, oops. Steven, I've run into the problem > when running a few selftests that do uprobe/kprobe attachment. At some > point, they started complaining that files like > /sys/kernel/debug/tracing/events/syscalls/sys_enter_nanosleep/id don't > exist. And this condition persisted. When I checked > /sys/kernel/debug/tracing in QEMU, it was empty. Is this a known > problem? The tracefs directory should automatically be mounted in the debugfs "tracing" directory when debugfs is mounted. Does /sys/kernel/tracing exist? -- Steve
