Paul Menage wrote: > On Tue, Mar 17, 2009 at 7:09 PM, Li Zefan <lizf@xxxxxxxxxxxxxx> wrote: >> Ah, I just notice debug_subsys will never be in rootnode. > > Right - this is the first of the "Open Issues" that I mentioned in the > patch. The question is how to display the multiply-bindable subsystems > in /proc/cgroup in a way that won't break backward-compatibility. > Options include: > > - always display one line for each subsystem; if a subsystem is > multiply-bindable then the "hierarchy id" and "num cgroups" columns > may be empty or have multiple (comma or slash-separated?) values > Then "hierarchy id" is no long a single number.. > - for a multiply-bindable subsystem, have a header line to indicate > that the subsystem exists, and then a separate line for each bound > instance of the subsystem. > I think it's better to show every subsystems including debug_subsys in /proc/cgroups, and show exactly n lines of debug_susys if we have n hierarcies with debug_subsys binded, but no header line. > Either of these could confuse existing userspace parsers, but I'm not And some cgroup test programs, like controller tests in ltp and some test programs that I wrote, but they are ok for this change. > sure that any exist other than libcgroup, and I don't think it's in > wide use yet. > _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
