Chapter 12. Signal Tapset

Table of Contents

probe signal.send — Fires when a system call or kernel function sends a signal to a process.
probe signal.send.return — Fires when a signal sent to a process returns.
probe signal.checkperm — Fires when a permission check is performed on a sent signal
probe signal.wakeup — Wakes up a sleeping process, making it ready for new active signals
probe signal.check_ignored — Fires when a system call or kernel function checks whether a
probe signal.force_segv — Fires when a system call, kernel function, or process sent a
probe signal.syskill — Fires when the kernel function <command>sys_kill</command>
probe signal.sys_tkill — Fires when <command>tkill</command> sends a kill signal
probe signal.sys_tgkill — Fires when the kernel function <command>tgkill</command>
probe signal.send_sig_queue — Fires when a signal is queued to a process
probe signal.pending — Fires when the <command>SIGPENDING</command> system call is used;
probe signal.handle — Fires when the signal handler is invoked
probe signal.do_action — Initiates a trace when a thread is about to examine
probe signal.procmask — Initiates a trace when a thread is about to examine and change blocked signals
probe signal.flush — Fires when all pending signals for a task are flushed

This family of probe points is used to probe signal activities. It contains the following probe points: