Messages in this thread Patch in this message | | | Date | Wed, 21 Feb 2018 13:38:35 -0500 (EST) | From | Alan Stern <> | Subject | Re: [PATCH RFC tools/lkmm 10/12] tools/memory-model: Add a S lock-based external-view litmus test |
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On Wed, 21 Feb 2018, Paul E. McKenney wrote:
> On Wed, Feb 21, 2018 at 11:50:31AM -0500, Alan Stern wrote: > > On Wed, 21 Feb 2018, Paul E. McKenney wrote: > > > > > On Wed, Feb 21, 2018 at 10:09:00AM -0500, Alan Stern wrote: > > > > On Tue, 20 Feb 2018, Paul E. McKenney wrote: > > > > > > > > > From: Alan Stern <stern@rowland.harvard.edu> > > > > > > > > > > This commit adds a litmus test in which P0() and P1() form a lock-based S > > > > > litmus test, with the addition of P2(), which observes P0()'s and P1()'s > > > > > > > > Why do you call this an "S" litmus test? Isn't ISA2 a better > > > > description? > > > > > > Indeed, the name of the test is in fact ISA2. > > > > Sure; and the Changelog entry should reflect this. > > No argument.
> ------------------------------------------------------------------------ > > commit e6658d1d7fcc6391f3d00beaadc484243123a893 > Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com> > Date: Wed Feb 21 09:49:01 2018 -0800 > > tools/memory-order: Add documentation of new litmus test > > The litmus-tests/README file lacked any mention of then litmus test
s/lacked/lacks/ s/then/the new/
> named ISA2+pooncelock+pooncelock+pombonce.litmus. This commit therefore
s/named //
> adds this test.
It adds a description of the test, not the test itself.
> > Reported-by: Alan Stern <stern@rowland.harvard.edu> > Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> > > diff --git a/tools/memory-model/litmus-tests/README b/tools/memory-model/litmus-tests/README > index dca7d823ad57..aff3eb90e067 100644 > --- a/tools/memory-model/litmus-tests/README > +++ b/tools/memory-model/litmus-tests/README > @@ -32,6 +32,11 @@ IRIW+poonceonces+OnceOnce.litmus > order of a pair of writes, where each write is to a different > variable by a different process? > > +ISA2+pooncelock+pooncelock+pombonce.litmus > + Tests whether the ordering provided by a lock-protected S litmus
Call it an ISA2 litmus test, not an S litmus test!
> + test is visible to an external process whose accesses are > + separated by smp_mb(). > + > ISA2+poonceonces.litmus > As below, but with store-release replaced with WRITE_ONCE() > and load-acquire replaced with READ_ONCE().
Alan
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