From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas.monjalon@6wind.com>
Subject: Re: [PATCH] remove unused ring includes
Date: Fri, 16 Sep 2016 10:08:58 +0200
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To: Amine Kherbouche <amine.kherbouche@6wind.com>
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2016-08-31 10:34, Amine Kherbouche:
> This patch removes all unused <rte_ring.h> headers.
> 
> Signed-off-by: Amine Kherbouche <amine.kherbouche@6wind.com>
[...]
> --- a/examples/performance-thread/common/lthread_int.h
> +++ b/examples/performance-thread/common/lthread_int.h
> @@ -72,7 +72,6 @@
>  #include <rte_cycles.h>
>  #include <rte_per_lcore.h>
>  #include <rte_timer.h>
> -#include <rte_ring.h>

It must be replaced by rte_memory.h for __rte_cache_aligned definition.
You didn't see it because this example is not built by default.

Applied with above fix, thanks