-H is userland threads, -k is kernel threads. I guess "kernel visible" was
to distinguish between the old uthread where threads were handled in
userland and not visible to the kernel, and rthread ...
--
Sent from a phone, apologies for poor formatting.
On 11 September 2023 10:02:32 Marc Espie <marc.espie.open...@gmail.com> wrote:
I was reading through ps.1, which has two slightly different options
-H Also display information about kernel visible threads.
-k Also display information about kernel threads.
It's not at all obvious what the difference between these options might be.
From the log:
--------------------
revision 1.77
date: 2011/09/25 00:29:59; author: guenther; state: Exp; lines: +5 -3;
Add -H option to show rthreads, hiding them by default
Diff from uwe@
--------------------
so slightly more info.
Looking at the code, now this is KERN_PROC_KTHREAD vs KERN_PROC_SHOW_THREADS
in kvm_getprocs(3).
Now KERN_PROC_KTHREAD is documented, but there is nothing about
KERN_PROC_SHOW_THREADS.
The code around (dothreads) in kvm* doesn't make things really obvious.
