Commit df61e945 authored by Chen Linxuan's avatar Chen Linxuan Committed by Jonathan Corbet
Browse files

Documentation: update the description of TracerPid in procfs.rst 



When the tracer of process is outside of current pid namespace, field
`TracerPid` in /proc/<pid>/status will be 0, too, just like this process
not have been traced.

This is because that function `task_pid_nr_ns` used to get the pid of
tracer will return 0 in this situation.

Co-authored-by: default avatarYuan Haisheng <heysion@deepin.com>
Signed-off-by: default avatarChen Linxuan <chenlinxuan@uniontech.com>
Link: https://lore.kernel.org/r/20221102081517.19770-1-chenlinxuan@uniontech.com


Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 5478cf6a

Documentation/filesystems/proc.rst

+2 −1
Original line number Diff line number Diff line
@@ -245,7 +245,8 @@ It's slow but very precise. 
 Ngid                        NUMA group ID (0 if none)

 Pid                         process id

 PPid                        process id of the parent process

 TracerPid                   PID of process tracing this process (0 if not)

 TracerPid                   PID of process tracing this process (0 if not, or

                             the tracer is outside of the current pid namespace)

 Uid                         Real, effective, saved set, and  file system UIDs

 Gid                         Real, effective, saved set, and  file system GIDs

 FDSize                      number of file descriptor slots currently allocated