On 25 August 2014 19:32, Harry van Haaren <harryhaaren@xxxxxxxxx> wrote: > On Mon, Aug 25, 2014 at 2:55 PM, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote: >> You tried both these as root? Even 'sudo' may not work.. > Yes, the original output was all as root (not sudo, genuine root). > >> I haven't seen the rt code since sometime, what tag should I look at ? > I'm running 3.14.12-rt9-1-rt (as packaged for Arch here: > https://aur.archlinux.org/packages/linux-rt ) I don't have a clue of what's going wrong here.. But my guess would be that something is not working with locking, as that's one of the main difference between rt and non-rt kernels. Can you try to debug it with some prints? The functions of interest would be, drivers/cpufreq/cpufreq.c: - static ssize_t show(struct kobject *kobj, struct attribute *attr, char *buf) - static ssize_t store_scaling_governor(struct cpufreq_policy *policy, const char *buf, size_t count) Try to add some prints there while returning errors and then try to change governor from userspace and things might get somewhat better then.. -- viresh -- 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
