On Wed, Jan 30, 2019 at 11:32:43AM -0800, Alexei Starovoitov wrote: > On Wed, Jan 30, 2019 at 11:10:58AM +0100, Peter Zijlstra wrote: > > > > Why do you say this is not possible? All you need is 3 CPUs, one doing a > > CPU online, one doing a perf ioctl() and one doing that > > bpf_probe_register(). > > yeah. indeed. I'm impressed that lockdep figured it out > while I missed it manually looking through the code and stack traces.
That's what it does :-)
