On Fri, Oct 09, 2020 at 09:55:56AM -0600, Shuah Khan wrote: > Introduce Simple atomic counters. > > There are a number of atomic_t usages in the kernel where atomic_t api > is used strictly for counting and not for managing object lifetime. In > some cases, atomic_t might not even be needed. > > The purpose of these counters is to clearly differentiate atomic_t > counters from atomic_t usages that guard object lifetimes, hence prone > to overflow and underflow errors. It allows tools that scan for underflow > and overflow on atomic_t usages to detect overflow and underflows to scan > just the cases that are prone to errors.
Under- and overflow on atomic_t is perfectly fine. We're not going to create pointless wrappers for this. What tools, and how could they not be served by adding annotations to variable declarations?
