Re: ebpf trace doesn't work during cpu hotplug

On Wed, May 29, 2019 at 11:28 AM Ming Lei wrote: > > Hi, > > Looks ebpf trace doesn't work during cpu hotplug, see the following trace: > > 1) trace two functions called during CPU unplug via bcc/trace > > /usr/share/bcc/tools/trace -T 'takedown_cpu "%d", arg1

ebpf trace doesn't work during cpu hotplug

Hi, Looks ebpf trace doesn't work during cpu hotplug, see the following trace: 1) trace two functions called during CPU unplug via bcc/trace /usr/share/bcc/tools/trace -T 'takedown_cpu "%d", arg1' 'take_cpu_down' 2) put cpu7 offline via: echo 0 > /sys/devices/system/cpu/cpu7/on