Re: [RFC] [PATCH] Performance of del_timer_sync

[Andrew Morton]

Andrew Morton <akpm@xxxxxxxx> wrote:
>
> "Chen, Kenneth W" <kenneth.w.chen@xxxxxxxxx> wrote:
> >
> > >  del_again:
> >  >  	ret += del_timer(timer);
> >  > +	if (!ret)
> >  > +		return 0;
> >  >
> >  >  	for_each_cpu(i) {
> >  >  		base = &per_cpu(tvec_bases, i);
> > 
> > 
> >  Hehe ... , first thing we tried :-). But has problem that if timeout
> >  function is running while del_timer_sync() is called, it returns
> >  without waiting.
> 
> eh?  If del_timer() returns non-zero, that means that the timer was
> successfully deleted before it triggered.

s/non-zero/zero/
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