netdev - Re: [PATCH net-next v3 3/3] virtio-net: support dim profile fine-tuning

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Date: Wed, 3 Apr 2024 04:53:23 +0800
From: kernel test robot <lkp@...el.com>
To: Heng Qi <hengqi@...ux.alibaba.com>, netdev@...r.kernel.org,
	virtualization@...ts.linux.dev
Cc: oe-kbuild-all@...ts.linux.dev, Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jason Wang <jasowang@...hat.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: Re: [PATCH net-next v3 3/3] virtio-net: support dim profile
 fine-tuning

Hi Heng,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Heng-Qi/ethtool-provide-customized-dim-profile-management/20240402-201527
base:   net-next/main
patch link:    https://lore.kernel.org/r/1712059988-7705-4-git-send-email-hengqi%40linux.alibaba.com
patch subject: [PATCH net-next v3 3/3] virtio-net: support dim profile fine-tuning
config: openrisc-defconfig (https://download.01.org/0day-ci/archive/20240403/202404030423.IyBzs9Jd-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240403/202404030423.IyBzs9Jd-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404030423.IyBzs9Jd-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from net/packet/af_packet.c:86:
>> include/linux/virtio_net.h:15:34: warning: 'rx_eqe_conf' defined but not used [-Wunused-const-variable=]
      15 | static const struct dim_cq_moder rx_eqe_conf[] = {
         |                                  ^~~~~~~~~~~


vim +/rx_eqe_conf +15 include/linux/virtio_net.h

    12	
    13	/* This is copied from NET_DIM_RX_EQE_PROFILES in DIM library */
    14	#define VIRTNET_DIM_RX_PKTS 256
  > 15	static const struct dim_cq_moder rx_eqe_conf[] = {
    16		{.usec = 1,   .pkts = VIRTNET_DIM_RX_PKTS,},
    17		{.usec = 8,   .pkts = VIRTNET_DIM_RX_PKTS,},
    18		{.usec = 64,  .pkts = VIRTNET_DIM_RX_PKTS,},
    19		{.usec = 128, .pkts = VIRTNET_DIM_RX_PKTS,},
    20		{.usec = 256, .pkts = VIRTNET_DIM_RX_PKTS,}
    21	};
    22	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki