On Thu, 2013-12-19 at 12:51 -0800, Randy Dunlap wrote:
> On 12/19/13 12:45, Davidlohr Bueso wrote:
> > From: Thomas Gleixner <[email protected]>
> > 
> > That's essential, if you want to hack on futexes.
> > 
> > Cc: Ingo Molnar <[email protected]>
> > Cc: Darren Hart <[email protected]>
> > Acked-by: Peter Zijlstra <[email protected]>
> > Cc: Thomas Gleixner <[email protected]>
> > Cc: Paul E. McKenney <[email protected]>
> > Cc: Mike Galbraith <[email protected]>
> > Cc: Jeff Mahoney <[email protected]>
> > Cc: Linus Torvalds <[email protected]>
> > Cc: Scott Norton <[email protected]>
> > Cc: Tom Vaden <[email protected]>
> > Cc: Aswin Chandramouleeswaran <[email protected]>
> > Cc: Waiman Long <[email protected]>
> > Cc: Jason Low <[email protected]>
> > Signed-off-by: Thomas Gleixner <[email protected]>
> > Signed-off-by: Davidlohr Bueso <[email protected]>
> > ---
> >  kernel/futex.c | 57 
> > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >  1 file changed, 57 insertions(+)
> > 
> > diff --git a/kernel/futex.c b/kernel/futex.c
> > index 577481d..af1fc31 100644
> > --- a/kernel/futex.c
> > +++ b/kernel/futex.c
> > @@ -69,6 +69,63 @@
> >  
> >  #include "locking/rtmutex_common.h"
> >  
> > +/*
> > + * Basic futex operation and ordering guarantees:
> > + *
> > + * The waiter reads the futex value in user space and calls
> > + * futex_wait(). It computes the hash bucket and acquires the hash
> 
> does                It
> refer to "the waiter" or to futex_wait()?
> I read it as referring to the waiter, but ISTM that the comments are using It
> to refer to futex_wait()... ???
> 

Yes, it refers to futex_wait(), which IMO in a futex context is pretty
clear.

Thanks,
Davidlohr

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