Em Thu, Jun 09, 2016 at 08:17:16AM -0700, Andi Kleen escreveu: > On Thu, Jun 09, 2016 at 10:42:08AM -0300, Arnaldo Carvalho de Melo wrote: > > Em Thu, Jun 09, 2016 at 06:14:39AM -0700, Andi Kleen escreveu: > > > Now that the NMI watchdog runs with reference cycles, and does not
> > Now as in when? We should at least warn the user that the kernel used is > > one where the NMI watchdog will not get in the way of topdown. Is there > > a programmatic way to discover that? > If the other patch gets merged at the same time as the TopDown patches > it's only a few days in tip which don't support it, no released kernel. > So no need to check for this case. Ok, I see, since on older kernels it will fail before that point, when not finding the topdown counters, no problem, super small window, thanks for clarifying. - Arnaldo
