On Tue, Apr 28, 2015 at 2:19 PM, Rafael J. Wysocki <raf...@kernel.org> wrote: > Sudeep: >> At-least I observed issue only when I am using hardware broadcast timer. >> It doesn't hang when I am using hrtimer as broadcast timer in which case >> one of the cpu will be not enter deeper idle states that lose timer. >> I will rerun on v4.1-rc1 and post the complete log. > > So the bug here is that cpuidle_enter() enables interrupts, so the > assumption about them being not enabled made by > tick_broadcast_oneshot_control() is actually not valid. > > It looks like we need to acquire the clockevents_lock at least in this > particular case. Let me see where to put it and I'll send a patch for > testing.
Aha that looks very much like it. Put me on the patch and I'll take it for a spin. Yours, Linus Walleij -- 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/
