tree: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master head: 9a95d9c6429bb58905fdfc95da2e1b7cc3fb55b7 commit: 2ca653d607ce59f2729173a7ea56dbfa6330ec88 [1999/2033] virtio_net: Stripe queue affinities across cores. config: sh-allyesconfig (attached as .config) compiler: sh4-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 2ca653d607ce59f2729173a7ea56dbfa6330ec88 # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=sh
All errors (new ones prefixed by >>):
drivers//net/virtio_net.c: In function 'virtnet_set_affinity':
>> drivers//net/virtio_net.c:1916:10: error: implicit declaration of function
>> 'cpumask_next_wrap'; did you mean 'cpumask_next_and'?
>> [-Werror=implicit-function-declaration]
cpu = cpumask_next_wrap(cpu, cpu_online_mask,
^~~~~~~~~~~~~~~~~
cpumask_next_and
cc1: some warnings being treated as errors
vim +1916 drivers//net/virtio_net.c
1889
1890 static void virtnet_set_affinity(struct virtnet_info *vi)
1891 {
1892 cpumask_var_t mask;
1893 int stragglers;
1894 int group_size;
1895 int i, j, cpu;
1896 int num_cpu;
1897 int stride;
1898
1899 if (!zalloc_cpumask_var(&mask, GFP_KERNEL)) {
1900 virtnet_clean_affinity(vi, -1);
1901 return;
1902 }
1903
1904 num_cpu = num_online_cpus();
1905 stride = max_t(int, num_cpu / vi->curr_queue_pairs, 1);
1906 stragglers = num_cpu >= vi->curr_queue_pairs ?
1907 num_cpu % vi->curr_queue_pairs :
1908 0;
1909 cpu = cpumask_next(-1, cpu_online_mask);
1910
1911 for (i = 0; i < vi->curr_queue_pairs; i++) {
1912 group_size = stride + (i < stragglers ? 1 : 0);
1913
1914 for (j = 0; j < group_size; j++) {
1915 cpumask_set_cpu(cpu, mask);
> 1916 cpu = cpumask_next_wrap(cpu, cpu_online_mask,
1917 nr_cpu_ids, false);
1918 }
1919 virtqueue_set_affinity(vi->rq[i].vq, mask);
1920 virtqueue_set_affinity(vi->sq[i].vq, mask);
1921 __netif_set_xps_queue(vi->dev, cpumask_bits(mask), i,
false);
1922 cpumask_clear(mask);
1923 }
1924
1925 vi->affinity_hint_set = true;
1926 free_cpumask_var(mask);
1927 }
1928
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0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
