From: Jiri Pirko <jiri@resnulli.us>
To: Eric Dumazet <edumazet@google.com>
Cc: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, eric.dumazet@gmail.com,
Samiullah Khawaja <skhawaja@google.com>,
Stanislav Fomichev <sdf@google.com>
Subject: Re: [PATCH net-next] net: call skb_defer_free_flush() from __napi_busy_loop()
Date: Wed, 28 Feb 2024 12:08:57 +0100 [thread overview]
Message-ID: <Zd8USSc6Yxea5ft9@nanopsycho> (raw)
In-Reply-To: <20240227210105.3815474-1-edumazet@google.com>
Tue, Feb 27, 2024 at 10:01:04PM CET, edumazet@google.com wrote:
>skb_defer_free_flush() is currently called from net_rx_action()
>and napi_threaded_poll().
>
>We should also call it from __napi_busy_loop() otherwise
>there is the risk the percpu queue can grow until an IPI
>is forced from skb_attempt_defer_free() adding a latency spike.
>
>Signed-off-by: Eric Dumazet <edumazet@google.com>
>Cc: Samiullah Khawaja <skhawaja@google.com>
>Cc: Stanislav Fomichev <sdf@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
next prev parent reply other threads:[~2024-02-28 11:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-27 21:01 [PATCH net-next] net: call skb_defer_free_flush() from __napi_busy_loop() Eric Dumazet
2024-02-27 21:07 ` Stanislav Fomichev
2024-02-28 11:08 ` Jiri Pirko [this message]
2024-02-29 4:40 ` patchwork-bot+netdevbpf
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