[LTP] [PATCH] controllers/cpuset: add cpuset files check for different OS

[Petr Vorel]

Hi Li,

> Hi Richie, Li,

> > Hello,

> > Petr Vorel <pvorel@suse.cz> writes:

> > > Hi Li,

> > >> While mounting cpuset cgroup, the subsystem directory entries
> > >> differ in different OS release.
> > >> eg, cpuset.cpus file on Ubuntu and cpus on some other release.
> > > Which ones, please? I'm not aware of anyone.

> > Unfortunately it is possible. cpuset can be mounted without a prefix
> > using a legacy compatability option. OTOH this is really ancient.

> Thanks for info.


> > >> So we add cpuset files checker to make sure the test work well
> > >> on all OS release.

> > > ...
> > >> +++ b/testcases/kernel/controllers/cpuset/cpuset_funcs.sh
> > > ...
> > >> +cpus_file=
> > >> +cpu_exclusive_file=
> > >> +mems_file=
> > >> +memory_pressure_file=
> > >> +memory_pressure_enabled_file=
> > >> +mem_exclusive_file=
> > >> +mem_hardwall_file=
> > >> +memory_migrate_file=
> > >> +memory_spread_page_file=
> > >> +memory_spread_slab_file=
> > >> +sched_load_balance_file=
> > >> +sched_relax_domain_level_file=
> > > Maybe move the ones in $CPUSET/cpuset.cpus clause here as the default ones
> > > and move those from else clause into setup.

> > > ...
> > >> +# check cpuset cgroup files for different OS
> > >> +cpuset_files_check()
> > >> +{
> > >> +	setup
> > > I guess this should be vice versa, i.e. cpuset_files_check() be part of setup()
> > > And then not needed to be added into all functions using cpuset_funcs.sh

> > Probably we could just do

> > if [ -f $CPUSET/cpuset.cpus" ]; then
> >    cpuset_prefix="cpuset."
> > else
> >    cpuset_prefix=
> > fi

> > then replace cpuset. with $cpuset_prefix

> +1, just maybe tiny improvement to remove else part:

> cpuset_prefix=
> if [ -f $CPUSET/cpuset.cpus" ]; then
> 	cpuset_prefix="cpuset."
> fi

Would you mind to send v2 with code suggested by Richie?

Kind regards,
Petr

> Kind regards,
> Petr