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SubjectRe: [PATCH] x86: percpu_to_op() misses memory and flags clobbers
Eric Dumazet wrote:
> +#define percpu_inc(var) percpu_to_op0("inc", per_cpu__##var)
> +#define percpu_dec(var) percpu_to_op0("dec", per_cpu__##var)
>

There's probably not a lot of value in this. The Intel and AMD
optimisation guides tend to deprecate inc/dec in favour of using
add/sub, because the former can cause pipeline stalls due to its partial
flags update.

J


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