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List:       netbsd-tech-kern
Subject:    Re: Linux futexes
From:       maya () netbsd ! org
Date:       2019-07-28 16:37:29
Message-ID: 20190728163729.GA19346 () homeworld ! netbsd ! org
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On Sat, Jul 27, 2019 at 06:05:25AM -0700, Jason Thorpe wrote:
> 
> 
> > On Jul 27, 2019, at 5:05 AM, Robert Swindells <rjs@fdy2.co.uk> wrote:
> > 
> > 
> > I don't think the Linux futex emulation code is correct/good enough.
> 
> I have be on/off working on an updated futex implementation written by Taylor, with \
> the intent of making it a native call (in order to improve or own semaphore and \
> mutex implementations).  You are correct in that the current implementation is \
> lacking. 
> I will try to focus on finishing up the new implementation soon.  But even the \
> stuff written by Taylor is a little lacking compared to what modern Linux uses \
> futexes for, so some additional work is going to be required. 

Hi jason,

it's probably good practice to share your own code in these
circumstances.

I believe it's https://github.com/thorpej/netbsd-src/tree/trc-jrt-futex


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