On Sat, Dec 02, 2006 at 07:27:56PM +0100, Thomas Gleixner wrote:
> On Sat, 2006-12-02 at 18:19 +0000, Al Viro wrote:
> > > This is going to make a lot of data structures smaller, when the
> > > timer_list is embedded in the structure itself and for the lot, which
> > > ignores the timer callback argument anyway.
> >
> > container_of => still lousy type safety. All over the sodding place.
>
> Not less than timer->data, where timer data is void *
RTFPosting. It might be void *, but it's set via SETUP_TIMER which
does type checks before casting to void *.
IOW, I don't want _any_ typecasts/container_of necessary in the code.
Sane variant is
void foo_timer(struct net_device *dev)
{
...
}
struct foo_dev *p = netdev_priv(dev);
SETUP_TIMER(&p->timer, foo_timer, dev);
etc.
With warning generated if foo_timer(dev) would not be type safe. Without
typecasts. Without container_of(). Without any bleeding cruft at all.
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