Re: [PATCH RFC 01/26] netfilter: Replace spin_unlock_wait() with lock/unlock pair

[Manfred Spraul]

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Hi Alan,

On 07/03/2017 09:57 PM, Alan Stern wrote:
> (Alternatively, you could make nf_conntrack_all_unlock() do a
> lock+unlock on all the locks in the array, just like
> nf_conntrack_all_lock().  But of course, that would be a lot less
> efficient.)
Hmmmm.

Someone with a weakly ordered system who can test this?
semop() has a very short hotpath.

Either with aim9.shared_memory.ops_per_sec or

#sem-scalebench -t 10 -m 0
https://github.com/manfred-colorfu/ipcscale/blob/master/sem-scalebench.cpp
--
    Manfred