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| author | Chunguang Wu <fullspring2018@gmail.com> | 2023-04-16 13:24:04 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-21 14:54:34 -0700 |
| commit | 522dc4e5f51e3d51c4ff55ad1c725d12176b71ea (patch) | |
| tree | 2bc3e886ccd84eb1e580c88dd421c9dbf776b113 /Documentation/filesystems | |
| parent | 3647ebcfbfca384840231fe13fae665453238a61 (diff) | |
| download | linux-522dc4e5f51e3d51c4ff55ad1c725d12176b71ea.tar.gz | |
fs/proc: add Kthread flag to /proc/$pid/status
The command `ps -ef ` and `top -c` mark kernel thread by '[' and ']', but
sometimes the result is not correct. The task->flags in /proc/$pid/stat
is good, but we need remember the value of PF_KTHREAD is 0x00200000 and
convert dec to hex. If we have no binary program and shell script which
read /proc/$pid/stat, we can know it directly by `cat /proc/$pid/status`.
Link: https://lkml.kernel.org/r/20230416052404.2920-1-fullspring2018@gmail.com
Signed-off-by: Chunguang Wu <fullspring2018@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/proc.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst index 9d5fd9424e8bbd..8a563684586c50 100644 --- a/Documentation/filesystems/proc.rst +++ b/Documentation/filesystems/proc.rst @@ -179,6 +179,7 @@ read the file /proc/PID/status:: Gid: 100 100 100 100 FDSize: 256 Groups: 100 14 16 + Kthread: 0 VmPeak: 5004 kB VmSize: 5004 kB VmLck: 0 kB @@ -256,6 +257,7 @@ It's slow but very precise. NSpid descendant namespace process ID hierarchy NSpgid descendant namespace process group ID hierarchy NSsid descendant namespace session ID hierarchy + Kthread kernel thread flag, 1 is yes, 0 is no VmPeak peak virtual memory size VmSize total program size VmLck locked memory size |