On Wed, 21 Mar 2018, Jason Gunthorpe wrote: > On Wed, Mar 21, 2018 at 01:04:45PM -0500, Christopher Lameter wrote: > > On Wed, 21 Mar 2018, Jason Gunthorpe wrote: > > > > > I think we are going to add a lock, it should cover all readers > > > too. There is no real reason not too that I can see. > > > > The general approach in the kernel is to not use locks for access to > > statistics and recognize that they are snapshots and may be inaccurate > > because unserialized things happened after or at the time of the snapshot. > > Maybe, but other places aren't recording their statistics in u64's > then, there is no way to do that without locks portably. Umm... Ok so we are concerned about 32 bits here? True the core kernel uses unsigned long for these counters. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
