ptrace_trap_notify
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## Name

ptrace_trap_notify — schedule trap to notify ptracer

## Synopsis

`void ptrace_trap_notify (` | struct task_struct * t`)`;

## Arguments

`t`

  tracee wanting to notify tracer

## Description

This function schedules sticky ptrace trap which is cleared on the next TRAP_STOP to notify ptracer of an event. `t` must have been seized by ptracer.

If `t` is running, STOP trap will be taken. If trapped for STOP and ptracer is listening for events, tracee is woken up so that it can re-trap for the new event. If trapped otherwise, STOP trap will be eventually taken without returning to userland after the existing traps are finished by PTRACE_CONT.

## CONTEXT

Must be called with `task`->sighand->siglock held.

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