btw., i'd write the CONFIG_UPROBE_EVENT .config help text: This allows the user to add tracing events on top of userspace dynamic events (similar to tracepoints) on the fly via the traceevents interface. Those events can be inserted wherever uprobes can probe, and record various registers. This option is required if you plan to use perf-probe subcommand of perf tools on user space applications. In a clearer form: This allows the user to add user-space dynamic events on the fly, similar to tracepoints. These events can be inserted into just about any user-space code transparently, and can record register state there on the fly, which is then used by instrumentation tools. This option is required if you plan to use the "perf probe" subcommand of the perf tool on user space applications. Thanks, Ingo -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>