Hi Vincent On 06/11/20 14:01, Vincent Guittot wrote: > On Thu, 11 Jun 2020 at 12:24, Qais Yousef <qais.yousef@xxxxxxx> wrote: [...] > > > Strange because I have been able to trace them. > > > > On your arm platform? I can certainly see them on x86. > > yes on my arm platform Sorry for not getting back to you earlier but I have tried several things and shared my results, which you were CCed into all of them. I have posted a patch that protects uclamp with a static key, mind trying it on your platform to see if it helps you too? https://lore.kernel.org/lkml/20200619172011.5810-1-qais.yousef@xxxxxxx/ Thanks -- Qais Yousef