centos man page for do_jobctl_trap

DO_JOBCTL_TRAP(9)						   Driver Basics						 DO_JOBCTL_TRAP(9)

NAME
       do_jobctl_trap - take care of ptrace jobctl traps

SYNOPSIS
       void do_jobctl_trap(void);

ARGUMENTS
       void
	   no arguments

DESCRIPTION
       When PT_SEIZED, it's used for both group stop and explicit SEIZE/INTERRUPT traps. Both generate PTRACE_EVENT_STOP trap with accompanying
       siginfo. If stopped, lower eight bits of exit_code contain the stop signal; otherwise, SIGTRAP.

       When !PT_SEIZED, it's used only for group stop trap with stop signal number as exit_code and no siginfo.

CONTEXT
       Must be called with current->sighand->siglock held, which may be released and re-acquired before returning with intervening sleep.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							 DO_JOBCTL_TRAP(9)