[dpdk-dev] [PATCH 2/5] lib/stack: remove push acquire fence

[Eads, Gage]

> -----Original Message-----
> From: Steven Lariau <steven.lariau at arm.com>
> Sent: Friday, September 11, 2020 10:30 AM
> To: Eads, Gage <gage.eads at intel.com>; Olivier Matz <olivier.matz at 6wind.com>
> Cc: dev at dpdk.org; nd at arm.com; dharmik.thakkar at arm.com; Steven Lariau
> <steven.lariau at arm.com>
> Subject: [PATCH 2/5] lib/stack: remove push acquire fence
> 
> An acquire fence is used to make sure loads after the fence can observe
> all store operations before a specific store-release.
> But push doesn't read any data, except for the head which is part of a
> CAS operation (the items on the list are not read).
> So there is no need for the acquire barrier.
> 
> Signed-off-by: Steven Lariau <steven.lariau at arm.com>
> Reviewed-by: Dharmik Thakkar <dharmik.thakkar at arm.com>
> Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>

Acked-by: Gage Eads <gage.eads at intel.com>

Thanks,
Gage