Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.33 as permitted sender) client-ip=23.128.96.33;
Date:   Tue, 31 Oct 2023 02:21:15 +0100
From:   Andrew Lunn <andrew@lunn.ch>
To:     Mirsad Todorovac <mirsad.todorovac@alu.unizg.hr>
Cc:     Heiner Kallweit <hkallweit1@gmail.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, nic_swsd@realtek.com,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>, Marco Elver <elver@google.com>
Subject: Re: [PATCH v3 1/1] r8169: Coalesce RTL8411b PHY power-down recovery
 programming instructions to reduce spinlock stalls
Message-ID: <bd4a59be-c393-4302-9d32-759e7cbfe255@lunn.ch>
References: <20231028110459.2644926-1-mirsad.todorovac@alu.unizg.hr>
 <376db5ae-1bb0-4682-b132-b9852be3c7aa@gmail.com>
 <23428695-fcff-495b-ac43-07639b4f5d08@alu.unizg.hr>
 <30e15e9a-d82e-4d24-be37-1b9d1534c082@gmail.com>
 <9f99c3a4-2752-464b-b37d-58a4f8041804@alu.unizg.hr>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <9f99c3a4-2752-464b-b37d-58a4f8041804@alu.unizg.hr>
Precedence: bulk

> I will not contradict, but the cummulative amount of memory barriers on each MMIO read/write
> in each single one of the drivers could amount to some degrading of overall performance and
> latency in a multicore system.

For optimisations, we like to see benchmark results which show some
improvements. Do you have any numbers?

	Andrew