Re: [PATCH v2] cpuset sched_load_balance flag

[Paul Jackson <pj@sgi.com>]

> > +		doms = kmalloc(sizeof(cpumask_t), GFP_KERNEL);
> > +		*doms = top_cpuset.cpus_allowed;
> 
> We generally only excuse failure to check kmalloc return value when the
> code is called on the bootup path.  But this code is called at other times.
> 
> >
> > ...
> > +	doms_cur =  kmalloc(sizeof(cpumask_t), GFP_KERNEL);

Ah - good catch - thanks, Andrew.  I should put together a fix,
to check these kmalloc calls.

For rebuild_sched_domains(), this can mean we just up and return having
done nothing.

For arch_init_sched_domains(), the code calling arch_init_sched_domains()
is not checking for failure, and doesn't have a trivial fallback code
path in the case of failure.  I'll have to think about that one just a
little.

Thanks, Andrew!

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@sgi.com> 1.925.600.0401