On Thu, 2017-06-08 at 17:01 +0100, George Dunlap wrote: > On 01/06/17 18:34, Dario Faggioli wrote: > > diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug > > index 374c1c0..81910c9 100644 > > --- a/xen/Kconfig.debug > > +++ b/xen/Kconfig.debug > > @@ -98,7 +98,7 @@ config PERF_ARRAYS > > ---help--- > > Enables software performance counter array histograms. > > > > -config TRACING > > +menuconfig TRACING > > bool "Tracing" > > default y > > ---help--- > > @@ -106,6 +106,15 @@ config TRACING > > in per-CPU ring buffers. The 'xentrace' tool can be used > > to read > > the buffers and dump the content on the disk. > > > > +config TRACE_IRQSOFF > > + bool "Trace when IRQs are disabled and (re)enabled" if > > EXPERT = "y" > > + default n > > + depends on TRACING > > + ---help--- > > + Makes it possible to generate events _every_ time IRQs > > are disabled > > + and (re)enabled, with also an indication of where that > > happened. > > + Note that this comes with high overead and produces huge > > amount of > > + tracing data. > > I think I might emphasize that the overhead well be present even when > tracing is off. What about something like this? > Yes, good point.
> "Note that this comes with an overhead even when tracing is disabled; > and has a high overhead and produces a large amount of tracing data > when > enabled." > I like it, I'll go for it. > With that change: > > Acked-by: George Dunlap <george.dun...@citrix.com> > Thanks and Regards, Dario -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
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