Hello, Li.
On Sat, Apr 20, 2013 at 09:22:09AM +0800, Li Zefan wrote:
> > migration is being done. Another approach would be converting cgroup
> > to use SRCU instead, which would lessen pain on other places too. The
> > only problem there would be that srcu_read_lock() is a bit more
> > expensiv
On 2013/4/20 4:58, Tejun Heo wrote:
> Hello,
>
> On Fri, Apr 19, 2013 at 08:29:24PM +0800, Li Zefan wrote:
>> +static void update_tasks_cpumask_hier(struct cpuset *root_cs,
>> + bool update_root, struct ptr_heap *heap)
>> +{
>> +struct cpuset *cp;
>> +struc
Hello,
On Fri, Apr 19, 2013 at 08:29:24PM +0800, Li Zefan wrote:
> +static void update_tasks_cpumask_hier(struct cpuset *root_cs,
> + bool update_root, struct ptr_heap *heap)
> +{
> + struct cpuset *cp;
> + struct cgroup *pos_cgrp;
> +
> + if (update_r
To achieve this:
- We call update_tasks_cpumask/nodemask() for empty cpusets when
hotplug happens, instead of moving tasks out of them.
- When a cpuset's masks are changed by writing cpuset.cpus/mems,
we also update tasks in child cpusets which are empty.
Signed-off-by: Li Zefan
---
kernel/cpu
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