OpenBSD manual page server

Manual Page Search Parameters

DT(4) Device Drivers Manual DT(4)

dtdynamic tracer

pseudo-device dt

System and application tracing can happen in the kernel. It has to be configured and enabled through the ioctl(2) interface exposed by the pseudo-device /dev/dt.

This device can only be opened when the kern.allowdt sysctl(2) variable is set.

/dev/dt
dynamic tracing device.

ioctl(2), bt(5), btrace(8)

The dt dynamic tracing mechanism first appeared in OpenBSD 6.7.

January 30, 2020 OpenBSD-current