On Thu, Sep 27, 2012 at 02:54:22PM +0800, Zhi Yong Wu wrote:

On Thu, Sep 27, 2012 at 12:03 PM, Dave Chinner [off-list ref] wrote:

quoted

On Sun, Sep 23, 2012 at 08:56:32PM +0800, zwu.kernel@gmail.com wrote:

quoted

From: Zhi Yong Wu <redacted>

  Fork and run one kernel kthread to calculate
that temperature based on some metrics kept
in custom frequency data structs, and store
the info in the hash table.

No new kthreads, please. Use a per-superblock workqueue and a struct
delayed_work to run periodic work on each superblock.

If no new kthread is created, which kthread will work on these
delayed_work tasks?

One of the kworker threads that service the workqueue
infrastructure.

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com