On Wed, Jul 01, 2020 at 07:06:54AM -0700, Paul E. McKenney wrote: > The current state in the C++ committee is that marking variables > carrying dependencies is the way forward. This is of course not what > the Linux kernel community does, but it should not be hard to have a > -fall-variables-dependent or some such that causes all variables to be > treated as if they were marked. Though I was hoping for only pointers. > Are they -sure- that they -absolutely- need to carry dependencies > through integers??? What's 'need'? :-) I'm thinking __ktime_get_fast_ns() is better off with a dependent load than it is with an extra smp_rmb(). Yes we can stick an smp_rmb() in there, but I don't like it. Like I wrote earlier, if I wanted a control dependency, I'd have written one.
