Symbol: PT_SUSPEND
sys/kern/sys_process.c
1112
case PT_SUSPEND:
tests/sys/kern/ptrace_test.c
2196
REQUIRE_EQ(ptrace(PT_SUSPEND, main_lwp, 0, 0), 0);
tests/sys/kern/ptrace_test.c
3833
ATF_REQUIRE(ptrace(PT_SUSPEND, lwps[0], NULL, 0) != -1);