On Fri, 15 Nov 2013, Ingo Molnar wrote: > > Btw., does the kernel side currently support discovery of such > impossible group scheduling constraints at group setup time? If not > then it probably should and it should reject them straight away.
It does not, or at least I'm pretty sure it can't if the NMI watchdog is enabled (Stephane, are you doing your tests with NMI watchdog disabled?) This is a big problem with PAPI. If the NMI watchdog is enabled you can't tell if a group will fail until the first read, the kernel can't tell you at setup time. Vince -- 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/
