Hi Reinette, > On 9/13/2022 6:51 PM, Shaopeng Tan wrote: > > ... > > > @@ -218,11 +219,11 @@ int cat_perf_miss_val(int cpu_no, int n, char > *cache_type) > > } > > } > > close(pipefd[0]); > > - kill(bm_pid, SIGKILL); > > } > > > > - if (bm_pid) > > - umount_resctrlfs(); > > +out: > > + kill(bm_pid, SIGKILL); > > + umount_resctrlfs(); > > > > From what I can tell both parent and child will now run this code. So both will > attempt to unmount resctrl fs and the child will attempt to kill PID 0? Thanks for your advice. There are problems as you point out. I think it is complicated if we fix this bug like MBM/MBA/CMT test using sigaction(). It seems this bug cannot be solved easily. Please give me some time. Best Regards, Shaopeng
