Messages in this thread | | | Date | Wed, 12 Apr 2023 14:12:16 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] fs/proc: add Kthread flag to /proc/$pid/status |
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On Wed, 12 Apr 2023 22:34:02 +0800 Chunguang Wu <aman2008@qq.com> wrote:
> user can know that a process is kernel thread or not. > > ... > > --- a/fs/proc/array.c > +++ b/fs/proc/array.c > @@ -434,6 +434,12 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, > > task_state(m, ns, pid, task); > > + if ((mm == NULL) || (task->flags & PF_KTHREAD)) { > + seq_puts(m, "Kthread:\tYes\n"); > + } else { > + seq_puts(m, "Kthread:\tNo\n"); > + } > + > if (mm) { > task_mem(m, mm); > task_core_dumping(m, task);
Well.. Why is this information useful? What is the use case?
There are many ways of working this out from the existing output - why is this change required?
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