On Wed, 1 May 2019 12:12:13 -0700 "Paul E. McKenney" <paul...@linux.ibm.com> wrote:
> OK, what I did was to apply the patch at the end of this email to -rcu > branch dev, then run rcutorture as follows: > > nohup tools/testing/selftests/rcutorture/bin/kvm.sh --cpus 8 --duration 2 > --configs "TRIVIAL" --bootargs > "trace_event=sched:sched_switch,sched:sched_wakeup ftrace=function_graph > ftrace_graph_filter=sched_setaffinity,migration_cpu_stop" > > This resulted in the console output that I placed here: > > http://www2.rdrop.com/~paulmck/submission/console.log.gz > > But I don't see calls to sched_setaffinity() or migration_cpu_stop(). > Steve, is something else needed on the kernel command line in addition to > the following? > > ftrace=function_graph ftrace_graph_filter=sched_setaffinity,migration_cpu_stop Do you have function graph enabled in the config? [ 2.098303] ftrace bootup tracer 'function_graph' not registered. -- Steve
