Re: [PATCH wq/for-4.5-fixes] workqueue: handle NUMA_NO_NODE for unbound pool_workqueue lookup

From	Tejun Heo <tj@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH wq/for-4.5-fixes] workqueue: handle NUMA_NO_NODE for unbound pool_workqueue lookup
Date	2016-02-15 22:10 +0100
Message-ID	<r2yz8-6zi-25@gated-at.bofh.it> (permalink)
References	(1 earlier) <qYaOL-5HS-33@gated-at.bofh.it> <r0Flp-45R-17@gated-at.bofh.it> <r2vhT-49p-7@gated-at.bofh.it> <r2w4i-4N8-7@gated-at.bofh.it> <r2yps-6g5-15@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

Hello, Michal.

On Mon, Feb 15, 2016 at 09:54:38PM +0100, Michal Hocko wrote:
> I am not sure I understand. Does that mean that a node with no memory
> would have its WQ specific pool? I might be missing something but I

Yeah, I think it should.

> thought that cpu_to_node will return NUMA_NO_NODE if the CPU is memory
> less. Or do you expect that cpu_to_node will always return a valid node
> id even when it doesn't contain any memory?

Hmmm... that was what I was expecting.  It's not really looking for
memory node to use but identify affinity there.

Thanks.

-- 
tejun

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

[PATCH wq/for-4.5-fixes] workqueue: handle NUMA_NO_NODE for unbound  pool_workqueue lookup Tejun Heo <tj@kernel.org> - 2016-02-10 17:00 +0100
  Re: [PATCH wq/for-4.5-fixes] workqueue: handle NUMA_NO_NODE for  unbound pool_workqueue lookup Michal Hocko <mhocko@kernel.org> - 2016-02-15 18:40 +0100
    Re: [PATCH wq/for-4.5-fixes] workqueue: handle NUMA_NO_NODE for  unbound pool_workqueue lookup Tejun Heo <tj@kernel.org> - 2016-02-15 19:30 +0100
      Re: [PATCH wq/for-4.5-fixes] workqueue: handle NUMA_NO_NODE for  unbound pool_workqueue lookup Michal Hocko <mhocko@kernel.org> - 2016-02-15 22:00 +0100
        Re: [PATCH wq/for-4.5-fixes] workqueue: handle NUMA_NO_NODE for  unbound pool_workqueue lookup Tejun Heo <tj@kernel.org> - 2016-02-15 22:10 +0100

csiph-web