SEND_SIG_FORCED 1800 include/linux/sched.h return info <= SEND_SIG_FORCED; SEND_SIG_FORCED 201 kernel/ptrace.c send_sig_info(SIGSTOP, SEND_SIG_FORCED, task); SEND_SIG_FORCED 822 kernel/signal.c if (info == SEND_SIG_FORCED) SEND_SIG_FORCED 957 kernel/signal.c force_sig_info(sig, SEND_SIG_FORCED, t);