linux-kernel - Re: [PATCH v2 1/1] net: openvswitch: reduce cpu_used

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Date:   Wed, 1 Feb 2023 14:44:20 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     taoyuan_eddy@...mail.com
Cc:     netdev@...r.kernel.org, Pravin B Shelar <pshelar@....org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, dev@...nvswitch.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] net: openvswitch: reduce cpu_used_mask memory

Wed, Feb 01, 2023 at 02:24:39PM CET, taoyuan_eddy@...mail.com wrote:
>From: Eddy Tao <taoyuan_eddy@...mail.com>
>
>'struct cpumask cpu_used_mask' is embedded in struct sw_flow.
>However, its size is hardcoded to CONFIG_NR_CPUS bits, which can be
>8192 by default, it costs memory and slows down ovs_flow_alloc.
>This fix uses actual CPU number instead
>
>Signed-off-by: Eddy Tao <taoyuan_eddy@...mail.com>

Eddy, looks like you missed my second comment to v1. Could you please
check again?

Thanks!