On Sat, Sep 11, 2021 at 12:48:01PM +0900, Alexei Lozovsky wrote: > Here's a patch set that makes /proc/stat report total interrupt counts > as monotonically increasing values, just like individual counters for > interrupt types and CPUs are. > > This is as if the sum was a shared counter that all CPUs increment > atomically together with their individual counters, with the sum > correctly and expectedly wrapping around to zero once it reaches > UINT_MAX. > > I've also added some documentation bits to codify this behavior and make > it explicit that wrap-arounds must be expected and handled if userspace > wants to maintain accurate total interrupt count for whatever reasons. How about making everything "unsigned long" or even "u64" like NIC drivers do?
