Re: [PATCH-cgroup 3/4] cgroup/cpuset: Keep track of CPUs in isolated partitions

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On 10/18/23 05:26, Tejun Heo wrote:
On Fri, Oct 13, 2023 at 02:11:21PM -0400, Waiman Long wrote:
...
@@ -3875,6 +3931,13 @@ static struct cftype dfl_files[] = {
  		.flags = CFTYPE_ONLY_ON_ROOT | CFTYPE_DEBUG,
  	},
+ {
+		.name = "cpus.isolated",
+		.seq_show = cpuset_common_seq_show,
+		.private = FILE_ISOLATED_CPULIST,
+		.flags = CFTYPE_ONLY_ON_ROOT | CFTYPE_DEBUG,
+	},
I'd much rather show this in a wq sysfs file along with other related masks,
and not in a DEBUG file.

It can certainly be exposed as a permanent addition to the cgroup control files instead of a debug only file. However this set of isolated CPUs may be used by others not just by workqueue. So I doubt if it should be a sysfs file in the workqueue directory. I can see if it is possible to put a symlink there point back to the cgroupfs.

Thanks,
Longman




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