On Mon, 26 Mar 2007 16:07:51 +0200 Ingo Molnar <mingo@xxxxxxx> wrote: > > * Sébastien Dugué <sebastien.dugue@xxxxxxxx> wrote: > > > I see that the calls to profile_tick() have been commented out in > > the different timer handlers. Why is this so? > > > > The only remaining place calling profile_tick() (well, in fact > > __profile_tick()) is the NMI watchdog ticker, but I don't enable it on > > my box. > > i'm using nmi_watchdog=2 to do profiling - if it's NMI-driven then the > readprofile results are alot more informative. > Thanks Ingo, but then I have to explicitly enable it. Are there any drawbacks to uncommenting those calls to profile_tick() in tick_periodic(), tick_nohz_handler() and tick_sched_timer()? The reason I ask is that systemtap scripts using the profile probe don't work on an RT kernel unless nmi_watchdog is set. Thanks, Sébastien. - 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
