lkml.org 
[lkml]   [2009]   [Oct]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 19/19] workqueue: implement concurrency managed workqueue
    Andrew Morton wrote:
    > On Thu, 1 Oct 2009 17:09:18 +0900 Tejun Heo <tj@kernel.org> wrote:
    >
    >> To solve the above issues, this patch implements concurrency-managed
    >> workqueue.
    >
    > Seems reasonable.
    >
    > This approach would appear to rule out the option of setting a work
    > thread's state (scheduling policy, scheduling priority, uid, etc) to
    > anything other than some default.
    >
    > I guess that's unlikely to be a problem if we haven't yet had a need to
    > do that, but I'd be a bit surprised to discover that nobody has done
    > that sort of thing yet? Nobody has niced up their workqueue threads?

    There were only two users in mainline which diddle with the worker
    kthread. The stop machine call which uses RT priority and osl which
    binds worker to cpu0. Both are updated not to do that in earlier
    patches. For most cases, I don't think it would matter. For special
    cases, given the rarity of them, I think we're better off with custom
    kthread for now. If they become more prevalent, we'll need to add
    support for it so that it can be done easier but even that turns out
    to be the case I think it would better to implement that separately
    from generic workqueue.

    Thanks.

    --
    tejun


    \
     
     \ /
      Last update: 2009-10-01 18:37    [W:0.021 / U:29.704 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site