From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: "Mattias Rönnblom" <mattias.ronnblom@ericsson.com>
Cc: dev@dpdk.org, hofors@lysator.liu.se,
"Morten Brørup" <mb@smartsharesystems.com>,
"Stephen Hemminger" <stephen@networkplumber.org>,
"Thomas Monjalon" <thomas@monjalon.net>,
"John W . Linville" <linville@tuxdriver.com>,
"Ferruh Yigit" <ferruh.yigit@amd.com>,
stable@dpdk.org
Subject: Re: [PATCH v3] net/af_packet: cache align Rx/Tx structs
Date: Fri, 26 Apr 2024 08:41:49 -0700 [thread overview]
Message-ID: <20240426154149.GA27008@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net> (raw)
In-Reply-To: <20240426090502.100487-1-mattias.ronnblom@ericsson.com>
On Fri, Apr 26, 2024 at 11:05:02AM +0200, Mattias Rönnblom wrote:
> Cache align Rx and Tx queue struct to avoid false sharing.
>
> The RX struct happens to be 64 bytes on x86_64 already, so cache
> alignment has no effect there, but it does on 32-bit ISAs.
>
> The TX struct is 56 bytes on x86_64.
>
> Both structs keep counters, and in the RX case they are updated even
> for empty polls.
>
> v3: Move __rte_cache_aligned directive to a MSVC-compatible location.
>
> Fixes: 364e08f2bbc0 ("af_packet: add PMD for AF_PACKET-based virtual devices")
> Cc: stable@dpdk.org
>
> Signed-off-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
> ---
Acked-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
next prev parent reply other threads:[~2024-04-26 15:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240423090813.94110-1-mattias.ronnblom@ericsson.com>
2024-04-26 7:38 ` [PATCH] " Mattias Rönnblom
2024-04-26 8:27 ` Ferruh Yigit
2024-04-26 10:20 ` Mattias Rönnblom
2024-04-26 9:05 ` [PATCH v3] " Mattias Rönnblom
2024-04-26 9:22 ` Morten Brørup
2024-04-26 15:10 ` Stephen Hemminger
2024-04-26 15:41 ` Tyler Retzlaff [this message]
2024-04-29 8:46 ` Ferruh Yigit
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