tree: https://github.com/ceph/ceph-client.git testing head: 3188fc411f0c286ac4dc4ea146ddc4bf4f348b39 commit: dc1961a859fe49cad7a26001bd3e9a53f234bf59 [49/53] ceph: add global read latency metric support config: i386-randconfig-e002-20200317 (attached as .config) compiler: gcc-7 (Debian 7.5.0-5) 7.5.0 reproduce: git checkout dc1961a859fe49cad7a26001bd3e9a53f234bf59 # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): ld: fs/ceph/debugfs.o: in function `metric_show': vim +140 fs/ceph/debugfs.c 126 127 static int metric_show(struct seq_file *s, void *p) 128 { 129 struct ceph_fs_client *fsc = s->private; 130 struct ceph_mds_client *mdsc = fsc->mdsc; 131 int i, nr_caps = 0; 132 s64 total, sum, avg = 0; 133 134 seq_printf(s, "item total sum_lat(us) avg_lat(us)\n"); 135 seq_printf(s, "-----------------------------------------------------\n"); 136 137 total = percpu_counter_sum(&mdsc->metric.total_reads); 138 sum = percpu_counter_sum(&mdsc->metric.read_latency_sum); 139 sum = jiffies_to_usecs(sum); 141 seq_printf(s, "%-14s%-12lld%-16lld%lld\n", "read", total, sum, avg); 142 143 seq_printf(s, "\n"); 144 seq_printf(s, "item total miss hit\n"); 145 seq_printf(s, "-------------------------------------------------\n"); 146 147 seq_printf(s, "%-14s%-16lld%-16lld%lld\n", "d_lease", 148 atomic64_read(&mdsc->metric.total_dentries), 149 percpu_counter_sum(&mdsc->metric.d_lease_mis), 150 percpu_counter_sum(&mdsc->metric.d_lease_hit)); 151 152 mutex_lock(&mdsc->mutex); 153 for (i = 0; i < mdsc->max_sessions; i++) { 154 struct ceph_mds_session *s; 155 156 s = __ceph_lookup_mds_session(mdsc, i); 157 if (!s) 158 continue; 159 nr_caps += s->s_nr_caps; 160 ceph_put_mds_session(s); 161 } 162 mutex_unlock(&mdsc->mutex); 163 seq_printf(s, "%-14s%-16d%-16lld%lld\n", "caps", nr_caps, 164 percpu_counter_sum(&mdsc->metric.i_caps_mis), 165 percpu_counter_sum(&mdsc->metric.i_caps_hit)); 166 167 return 0; 168 } 169 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org