On 2017-12-18 20:06:12 [-0500], Steven Rostedt wrote: > On Mon, 18 Dec 2017 18:55:24 -0600 > Grygorii Strashko <grygorii.strashko@xxxxxx> wrote: > > > Hi All, > > > > I've tried to run stress-ng on TI am57xx-evm (SMP, 2 cpu) and caught 2 "INFO: possible circular locking dependency detected" > > > > Command 1 (log 1): > > ## stress-ng --class cpu --all 0 -t 5m & stress-ng --class memory --all 0 --vm-bytes 90% -t 5m > > > > Command 2 (log 2): > > ## stress-ng --class os --all 0 -t 5m > > > > actually command 2 often stuck or crushes (Log3 - I've collected 3 different dumps) > > > > I hate to tell you but CPU hotplug is known to be broken on 4.9-rt and > earlier. Hopefully the v4.14-rt code with the redesigned hotplug work > fixes all this. Yes, the v4.9-RT hotplug is not perfect. It works in general but can fall apart with some load or "just" deadlock during CPU-down. The v4.14-RT should not suffer from this and work. > -- Steve Sebastian -- 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
