linux-kernel - Re: [PATCH 4/6] net: mvneta: Handle per-cpu interrupts

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Date:	Sun, 5 Jul 2015 14:37:08 +0200
From:	Willy Tarreau <w@....eu>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	"David S. Miller" <davem@...emloft.net>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 4/6] net: mvneta: Handle per-cpu interrupts

Hi Maxime,

On Fri, Jul 03, 2015 at 04:25:49PM +0200, Maxime Ripard wrote:
> Now that our interrupt controller is allowing us to use per-CPU interrupts,
> actually use it in the mvneta driver.
> 
> This involves obviously reworking the driver to have a CPU-local NAPI
> structure, and report for incoming packet using that structure.
> 
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>

This patch breaks module build of mvneta unless you export request_percpu_irq :

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index ec31697..1440a92 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1799,6 +1799,7 @@ int request_percpu_irq(unsigned int irq, irq_handler_t handler,
 
	return retval;
 }
+EXPORT_SYMBOL_GPL(request_percpu_irq);
 
Regards,
Willy

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