> $ ./lbr_perf record --call-graph lbr -e cycles:k ./cqm_easy > > where lbr_perf is the patched perf tool, that allows to specify :k > on lbr mode. The above command will trigger a #GPF :
Why would you want to do that? We usually have frame pointers for the kernel, so callstack LBR for the kernel is pointless. -Andi
