On Thu, Feb 06, 2014 at 09:56:54AM -0800, Linus Torvalds wrote: > On Thu, Feb 6, 2014 at 9:52 AM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > It's the "_return" variants. As far as I can tell, there are exactly > ZERO users of that stuff, and they are BAD BAD BAD. > > On x86, those things would cause a cmpxchg loop, and the bad > read-for-shared-before-acquire cacheline pattern. > > So why indirectly encourage people to add users for a bad operation? OK, I'll not generate the _return() variants. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
