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authorChen Linxuan <chenlinxuan@uniontech.com>2022-11-02 16:15:17 +0800
committerJonathan Corbet <corbet@lwn.net>2022-11-15 15:08:21 -0700
commitdf61e945e1e13b1fc8338f00db0a1518c48b7d2c (patch)
tree9c965a40b4b33a94d0539e886c23b451ea9d6cd4 /Documentation/filesystems/proc.rst
parent5478cf6ae514aef42c70032a026954f9c9bad4ca (diff)
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: Yuan Haisheng <heysion@deepin.com> Signed-off-by: Chen Linxuan <chenlinxuan@uniontech.com> Link: https://lore.kernel.org/r/20221102081517.19770-1-chenlinxuan@uniontech.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/filesystems/proc.rst')
-rw-r--r--Documentation/filesystems/proc.rst3
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
index 898c99eae8e4..e98e0277f05e 100644
--- a/Documentation/filesystems/proc.rst
+++ b/Documentation/filesystems/proc.rst
@@ -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