Re: [PATCH] kernel/hung_task.c: force ignore_loglevel before panic

[Tetsuo Handa]

On 2018/12/11 10:16, Liu, Chuansheng wrote:
> We may enhance it by:
> -       if (sysctl_hung_task_warnings) {
> +       if (sysctl_hung_task_panic || sysctl_hung_task_warnings) {
>                 if (sysctl_hung_task_warnings > 0)
>                         sysctl_hung_task_warnings--;

Why ignore sysctl_hung_task_warnings? The administrator can already
configure as sysctl_hung_task_warnings == -1 && sysctl_hung_task_panic == 1
if he/she does not want to suppress neither sched_show_task() nor
debug_show_all_locks()/trigger_all_cpu_backtrace(). Someone might want
that sysctl_hung_task_warnings == 0 (which is a request to suppress only
sched_show_task()) should not be ignored by sysctl_hung_task_panic == 1
(which is a request to trigger panic).