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5fe4677231
Almost all callers of _srv_add_idle() lock the list then call the function. It's not the most efficient and it requires some care from the caller to take care of that lock. Let's change this a little bit by having srv_add_idle() that takes the lock and calls _srv_add_idle() that is now inlined. This way callers don't have to handle the lock themselves anymore, and the lock is only taken around the sensitive parts, not the function call+return. Interestingly, perf tests show a small perf increase from 2.28-2.32M RPS to 2.32-2.37M RPS on a 128-thread system.