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    SubjectRe: [RFC][PATCH] Add do_not_call_when_idle option to timer and workqueue
    On Wed, 22 Nov 2006 09:13:24 -0800
    Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> wrote:

    > On Tue, Nov 21, 2006 at 06:11:14PM -0800, Andrew Morton wrote:
    > > On Tue, 21 Nov 2006 16:28:45 -0800
    > > Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> wrote:
    > >
    > > >
    > > > struct timer_list {
    > > > struct list_head entry;
    > > > unsigned long expires;
    > > > @@ -16,6 +18,7 @@
    > > > unsigned long data;
    > > >
    > > > struct tvec_t_base_s *base;
    > > > + int flags;
    > > > #ifdef CONFIG_TIMER_STATS
    > >
    > > Adding a new field to the timer_list is somewhat of a hit - this is going
    > > to make an awful lot of data structures a bit larger. Some of which we
    > > allocate a large number of.
    > >
    > > I think we could justfy getting nasty and using the LSB of
    > > timer_list.function for this..
    >
    > That is a clever idea... Is that going to work in all architectures with all
    > compiler flags?

    Don't know. Possibly not. Other options are list.next, list.prev and
    base. None of them are pleasant.
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