On 4 Mar 2002, Robert Love wrote:
> On Sun, 2002-03-03 at 22:55, Rusty Russell wrote:
> > 1) Use mmap/mprotect bits, not new syscall (thanks RTH, Erik Biederman)
> > 2) Fix wakeup race in kernel (thanks Martin Wirth, Paul Mackerras)
> > 3) Simplify locking to a single atomic (no more arch specifics!)
> > 4) Use wake-one by handcoding queues.
> > 5) Comments added.
> >
> > Thanks to all for feedback and review: I'd appreciate a comment from
> > those arch's which need to do something with the PROT_SEM bit.
> >
> > Once again, tested on 2.4.18 UP PPC, compiles on 2.5.6-pre1.
> >
> > Bad news is that we're up to 206 lines again.
> > Rusty.
>
> Good work. I likee.
Ok, i reply to this because my 'd' Pine's key is heavily used in these days :-)
I took a look at the code yesterday night and i've a stupid question
Rusty. I do not know what is the code used in the upper part of the
iceberg ( userspace ) but are you doing a dec_and_test() on userspace
before entering the kernel ? Or, is the kernel code the slow path or you
enter it by default ?
- Davide
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This archive was generated by hypermail 2b29 : Thu Mar 07 2002 - 21:00:35 EST