Hey Stano, On Thu, Apr 17, 2014 at 6:55 PM, Stanislav Meduna <stano@xxxxxxxxxx> wrote: > On 17.04.2014 18:29, Stanislav Meduna wrote: > >> Note: the bug goes away reverting the very same patches that are >> helping the Jordan's problms. I did follow >> >> http://www.spinics.net/lists/linux-rt-users/msg11639.html >> >> and no BUG while booting anymore. I'll try to let it run some >> more time. Yeah, i know a handful of people [amd users] that have now reported success booting into 3.14-rt1 reverting those patches. Personally, I have disabled NO_HZ_FULL and have switched back to 'old tick' method in kconfig. I don't think the latest no_hz stuff is stable enough... > Erm.. nope > > # (cat /proc/meminfo ; cat /proc/meminfo) | grep KernelStack > KernelStack: 5920 kB > KernelStack: 5928 kB > > # (cat /proc/meminfo ; cat /proc/meminfo) | grep KernelStack > KernelStack: 5952 kB > KernelStack: 5960 kB > > maybe interrupt nesting ad nauseum? How does one debug > such issues? > > It is possible that my previous posting was also caused by this - > disregard, I'll post again if the problem persists. > > Jordan, could you check whether your kernel stack remains > stable with only the 3 patches reverted? I'll have to re-install that kernel and get back to you [ give me an hour or so. i desperately need to eat some food ;) ]. My current kernel differs in a couple of ways [ but yes, the KernelStack is stable]. My running/installed rt-kernel is using the 'threadsirq' patch for linux-rt and isn't vanilla linux-rt anyway, as i patch in UKSM [in-kernel memory deduplication and BFQ [is scheduler]... but yes, I'm still reverting those 3 timer[s] patches, since my machine [and other users i know] won't boot without doing that. Here's my running kernel's kstack; [ninez@localhost ~]$ (cat /proc/meminfo ; cat /proc/meminfo) | grep KernelStack KernelStack: 3728 kB KernelStack: 3728 kB [ninez@localhost ~]$ (cat /proc/meminfo ; cat /proc/meminfo) | grep KernelStack KernelStack: 3696 kB KernelStack: 3696 kB I'll post from my old kernel in a bit. > Thanks No problem Jordan -- 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
