----- On Oct 30, 2015, at 4:25 PM, rostedt rost...@goodmis.org wrote: > On Thu, 29 Oct 2015 17:52:16 +0000 (UTC) > Mathieu Desnoyers <mathieu.desnoy...@efficios.com> wrote: > >> ----- On Oct 29, 2015, at 3:07 AM, rostedt rost...@goodmis.org wrote: >> >> > From: "Steven Rostedt (Red Hat)" <rost...@goodmis.org> >> > >> > In order to guarantee that a probe will be called before other probes that >> > are attached to a tracepoint, there needs to be a mechanism to provide >> > priority of one probe over the others. >> > >> > Adding a prio field to the struct tracepoint_func, which lets the probes be >> > sorted by the priority set in the structure. If no priority is specified, >> > then a priority of 10 is given (this is a macro, and perhaps may be changed >> > in the future). >> > >> > Now probes may be added to affect other probes that are attached to a >> > tracepoint with a guaranteed order. >> > >> > One use case would be to allow tracing of tracepoints be able to filter by >> > pid. A special (higher priority probe) may be added to the sched_switch >> > tracepoint and set the necessary flags of the other tracepoints to notify >> > them if they should be traced or not. In case a tracepoint is enabled at >> > the >> > sched_switch tracepoint too, the order of the two are not random. >> > >> > Cc: Mathieu Desnoyers <mathieu.desnoy...@efficios.com> >> > Signed-off-by: Steven Rostedt <rost...@goodmis.org> >> >> Sounds good to me, >> >> Acked-by: Mathieu Desnoyers <mathieu.desnoy...@efficios.com> >> > > Thanks. > > Unfortunately I already pushed it out to linux-next (had a deadline), > otherwise I could have added your ack. I'm guessing you missed the RFC > version I posted a week ago.
No worries, I've seen it, but was busy with other stuff. Thanks, Mathieu > > -- Steve -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
