perf: cgroup: INFO: suspicious RCU usage

2013-01-21 Thread Li Zefan
Got this warning as soon as I ran "perf stat -a -e faults -G cgrp1 -- sleep 1" This is a long-standing bug. At least I can trigger the same warning in 3.4 kernel. There were several bug reports before, but no one seems to care? === [ INFO: suspicious RCU usage. ]

perf: cgroup: INFO: suspicious RCU usage

2013-01-21 Thread Li Zefan
Got this warning as soon as I ran perf stat -a -e faults -G cgrp1 -- sleep 1 This is a long-standing bug. At least I can trigger the same warning in 3.4 kernel. There were several bug reports before, but no one seems to care? === [ INFO: suspicious RCU usage. ]