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scx_qmap currently outputs verbose debug messages including cgroup operations and CPU online/offline events by default, which can be noisy during normal operation. While the existing -P option controls DSQ dumps and event statistics, there's no way to suppress the other debug messages. Split the debug output controls to make scx_qmap quieter by default. The -P option continues to control DSQ dumps and event statistics (print_dsqs_and_events), while a new -M option controls debug messages like cgroup operations and CPU events (print_msgs). This allows users to run scx_qmap with minimal output and selectively enable debug information as needed. Acked-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>