Hi, On 04/09/2015 04:10 PM, Steven Rostedt wrote: > On Thu, 09 Apr 2015 15:46:12 +0200 > Carsten Emde <C.Emde@xxxxxxxxx> wrote: > >> Hi Daniel, >> >>> BTW, are you also taking care of the latency-hist.patch patch? >> I do. >> >> However, the request (and the challenge) is not to simply rewrite the >> code. The idea is to provide a general histogram framework that can be >> used from anywhere in the kernel and to equip it with everything needed >> by the existing histograms. This framework should no longer be part of >> the RT patches but submitted directly to mainline Linux. In a second >> step, we will then rewrite the existing histogram code to use the new >> framework. >> >> Any help is greatly appreciated! I'll start poking around then :) > Hmm, Currently Tom Zanussi is working on a hist trigger for tracing. > Not sure it can be used here, but perhaps ideas can be spawned. > > http://marc.info/?l=linux-kernel&m=142807630917288 >From a quick look, it should be possible to add on top of those patches the two TRACE_EVENTs (preemptirqsoff_hist, hrtimer_interrupt), annotate start_critical_*() & and friends (from latency-hist.patch). I'll try that and see what explodes. cheers, daniel -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
