Re: [PATCH v3 1/2] cgroup: Show # of subsystem CSSes in cgroup.stat

From: Waiman Long
Date: Thu Jul 11 2024 - 14:52:00 EST



On 7/11/24 14:44, Tejun Heo wrote:
Hello,

On Thu, Jul 11, 2024 at 01:39:38PM -0400, Waiman Long wrote:
On 7/11/24 13:18, Tejun Heo wrote:
...
Currently, I use the for_each_css() macro for iteration. If you mean
displaying all the possible cgroup subsystems even if they are not enabled
for the current cgroup, I will have to manually do the iteration.
Just wrapping it with for_each_subsys() should do, no? for_each_css() won't
iterate anything if css doesn't exist for the cgroup.

OK, I wasn't sure if you were asking to list all the possible cgroup v2 cgroup subsystems even if they weren't enabled in the current cgroup. Apparently, that is the case. I prefer it that way too.

Thanks,
Longman