On Thu, 2014-07-17 at 20:07 -0700, Davidlohr Bueso wrote: > On Wed, 2014-07-16 at 12:24 -0700, tip-bot for Peter Zijlstra wrote: > > Commit-ID: 4badad352a6bb202ec68afa7a574c0bb961e5ebc > > Gitweb: http://git.kernel.org/tip/4badad352a6bb202ec68afa7a574c0bb961e5ebc > > Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > AuthorDate: Fri, 6 Jun 2014 19:53:16 +0200 > > Committer: Ingo Molnar <mingo@xxxxxxxxxx> > > CommitDate: Wed, 16 Jul 2014 14:57:07 +0200 > > > > locking/mutex: Disable optimistic spinning on some architectures > > > > The optimistic spin code assumes regular stores and cmpxchg() play nice; > > this is found to not be true for at least: parisc, sparc32, tile32, > > metag-lock1, arc-!llsc and hexagon. > > > > There is further wreckage, but this in particular seemed easy to > > trigger, so blacklist this. > > > > Opt in for known good archs. > > > > Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > > Reported-by: Mikulas Patocka <mpatocka@xxxxxxxxxx> > > Cc: David Miller <davem@xxxxxxxxxxxxx> > > Cc: Chris Metcalf <cmetcalf@xxxxxxxxxx> > > Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> > > Cc: Vineet Gupta <vgupta@xxxxxxxxxxxx> > > Cc: Jason Low <jason.low2@xxxxxx> > > Cc: Waiman Long <waiman.long@xxxxxx> > > Cc: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxxxxx> > > Cc: Paul McKenney <paulmck@xxxxxxxxxxxxxxxxxx> > > Cc: John David Anglin <dave.anglin@xxxxxxxx> > > Cc: James Hogan <james.hogan@xxxxxxxxxx> > > Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > > Cc: Davidlohr Bueso <davidlohr@xxxxxx> > > Cc: stable@xxxxxxxxxxxxxxx > > Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> > > Cc: Catalin Marinas <catalin.marinas@xxxxxxx> > > Cc: Russell King <linux@xxxxxxxxxxxxxxxx> > > Cc: Will Deacon <will.deacon@xxxxxxx> > > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > > Cc: linux-kernel@xxxxxxxxxxxxxxx > > Cc: linuxppc-dev@xxxxxxxxxxxxxxxx > > Cc: sparclinux@xxxxxxxxxxxxxxx > > Link: http://lkml.kernel.org/r/20140606175316.GV13930@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx > > Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> > > Cc'ing stable: this issue was reported to begin after commit fb0527bd, > so since v3.13. Bah, never mind, I missed it when scanning the Cc list. Sorry about the noise. -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|