1UTRACE_BARRIER_PID(9)           utrace core API          UTRACE_BARRIER_PID(9)
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NAME

6       utrace_barrier_pid - synchronize with simultaneous tracing callbacks
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SYNOPSIS

9       __must_check int utrace_barrier_pid(struct pid * pid,
10                                           struct utrace_engine * engine);
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ARGUMENTS

13       pid
14           thread to affect
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16       engine
17           engine to affect (can be detached)
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DESCRIPTION

20       This is the same as utrace_barrier, but takes a struct pid pointer
21       rather than a struct task_struct pointer. The caller must hold a ref on
22       pid, but does not need to worry about the task staying valid. If it´s
23       been reaped so that pid points nowhere, then this call returns -ESRCH.
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27Kernel Hackers Manual 2.6.         June 2019             UTRACE_BARRIER_PID(9)
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