On Wed, 12 Apr 2023 22:34:02 +0800 Chunguang Wu <aman2008@xxxxxx> 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?
