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SubjectRe: [PATCH] locking/qspinlock: Fix inaccessible URL of MCS lock paper
On Tue, Jan 07, 2020 at 01:58:24PM +0100, Peter Zijlstra wrote:
> On Sun, Dec 22, 2019 at 09:25:32PM -0500, Waiman Long wrote:
> > It turns out that the URL of the MCS lock paper listed in the source
> > code is no longer accessible. I did got question about where the paper
> > was. This patch updates the URL to one that is still accessible.
> >
> > Signed-off-by: Waiman Long <longman@redhat.com>
> > ---
> > kernel/locking/qspinlock.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/kernel/locking/qspinlock.c b/kernel/locking/qspinlock.c
> > index 2473f10c6956..1d008d2333c0 100644
> > --- a/kernel/locking/qspinlock.c
> > +++ b/kernel/locking/qspinlock.c
> > @@ -34,7 +34,7 @@
> > * MCS lock. The paper below provides a good description for this kind
> > * of lock.
> > *
> > - * http://www.cise.ufl.edu/tr/DOC/REP-1992-71.pdf
> > + * https://www.cs.rochester.edu/u/scott/papers/1991_TOCS_synch.pdf
>
> Do we want to stick a copy of the paper in our bugzilla and link that
> instead? ISTR we do something similar elsewhere, but I'm having trouble
> finding it.
>
> Thomas, Konstantin?

Boris provided an example from commit:

018ebca8bd70 ("x86/cpufeatures: Enable a new AVX512 CPU feature")

That puts a copy of the relevant Intel document here:

https://bugzilla.kernel.org/show_bug.cgi?id=204215

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