SIGXCPU           349 include/linux/signal.h         rt_sigmask(SIGXCPU)   |  rt_sigmask(SIGXFSZ)   | \
SIGXCPU          1043 kernel/posix-cpu-timers.c 			__group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);
SIGXCPU          1183 kernel/posix-cpu-timers.c 			__group_send_sig_info(SIGXCPU, SEND_SIG_PRIV, tsk);