diff options
| 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 /fs/proc | |
| parent | 3647ebcfbfca384840231fe13fae665453238a61 (diff) | |
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 'fs/proc')
| -rw-r--r-- | fs/proc/array.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/proc/array.c b/fs/proc/array.c index 9b0315d34c58..425824ad85e1 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -219,6 +219,8 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns, seq_put_decimal_ull(m, "\t", task_session_nr_ns(p, pid->numbers[g].ns)); #endif seq_putc(m, '\n'); + + seq_printf(m, "Kthread:\t%c\n", p->flags & PF_KTHREAD ? '1' : '0'); } void render_sigset_t(struct seq_file *m, const char *header, |