1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
6 * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
7 * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
10 #define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt
14 void rtrs_clt_update_wc_stats(struct rtrs_clt_con *con)
16 struct rtrs_clt_path *clt_path = to_clt_path(con->c.path);
17 struct rtrs_clt_stats *stats = clt_path->stats;
18 struct rtrs_clt_stats_pcpu *s;
21 cpu = raw_smp_processor_id();
22 s = get_cpu_ptr(stats->pcpu_stats);
23 if (con->cpu != cpu) {
26 /* Careful here, override s pointer */
27 s = per_cpu_ptr(stats->pcpu_stats, con->cpu);
28 atomic_inc(&s->cpu_migr.from);
30 put_cpu_ptr(stats->pcpu_stats);
33 void rtrs_clt_inc_failover_cnt(struct rtrs_clt_stats *stats)
35 this_cpu_inc(stats->pcpu_stats->rdma.failover_cnt);
38 int rtrs_clt_stats_migration_from_cnt_to_str(struct rtrs_clt_stats *stats, char *buf)
40 struct rtrs_clt_stats_pcpu *s;
46 for_each_possible_cpu(cpu) {
47 s = per_cpu_ptr(stats->pcpu_stats, cpu);
48 used += sysfs_emit_at(buf, used, "%d ",
49 atomic_read(&s->cpu_migr.from));
52 used += sysfs_emit_at(buf, used, "\n");
57 int rtrs_clt_stats_migration_to_cnt_to_str(struct rtrs_clt_stats *stats, char *buf)
59 struct rtrs_clt_stats_pcpu *s;
65 for_each_possible_cpu(cpu) {
66 s = per_cpu_ptr(stats->pcpu_stats, cpu);
67 used += sysfs_emit_at(buf, used, "%d ", s->cpu_migr.to);
70 used += sysfs_emit_at(buf, used, "\n");
75 int rtrs_clt_stats_reconnects_to_str(struct rtrs_clt_stats *stats, char *buf)
77 return sysfs_emit(buf, "%d %d\n", stats->reconnects.successful_cnt,
78 stats->reconnects.fail_cnt);
81 ssize_t rtrs_clt_stats_rdma_to_str(struct rtrs_clt_stats *stats, char *page)
83 struct rtrs_clt_stats_rdma sum;
84 struct rtrs_clt_stats_rdma *r;
87 memset(&sum, 0, sizeof(sum));
89 for_each_possible_cpu(cpu) {
90 r = &per_cpu_ptr(stats->pcpu_stats, cpu)->rdma;
92 sum.dir[READ].cnt += r->dir[READ].cnt;
93 sum.dir[READ].size_total += r->dir[READ].size_total;
94 sum.dir[WRITE].cnt += r->dir[WRITE].cnt;
95 sum.dir[WRITE].size_total += r->dir[WRITE].size_total;
96 sum.failover_cnt += r->failover_cnt;
99 return sysfs_emit(page, "%llu %llu %llu %llu %u %llu\n",
100 sum.dir[READ].cnt, sum.dir[READ].size_total,
101 sum.dir[WRITE].cnt, sum.dir[WRITE].size_total,
102 atomic_read(&stats->inflight), sum.failover_cnt);
105 ssize_t rtrs_clt_reset_all_help(struct rtrs_clt_stats *s, char *page)
107 return sysfs_emit(page, "echo 1 to reset all statistics\n");
110 int rtrs_clt_reset_rdma_stats(struct rtrs_clt_stats *stats, bool enable)
112 struct rtrs_clt_stats_pcpu *s;
118 for_each_possible_cpu(cpu) {
119 s = per_cpu_ptr(stats->pcpu_stats, cpu);
120 memset(&s->rdma, 0, sizeof(s->rdma));
126 int rtrs_clt_reset_cpu_migr_stats(struct rtrs_clt_stats *stats, bool enable)
128 struct rtrs_clt_stats_pcpu *s;
134 for_each_possible_cpu(cpu) {
135 s = per_cpu_ptr(stats->pcpu_stats, cpu);
136 memset(&s->cpu_migr, 0, sizeof(s->cpu_migr));
142 int rtrs_clt_reset_reconnects_stat(struct rtrs_clt_stats *stats, bool enable)
147 memset(&stats->reconnects, 0, sizeof(stats->reconnects));
152 int rtrs_clt_reset_all_stats(struct rtrs_clt_stats *s, bool enable)
155 rtrs_clt_reset_rdma_stats(s, enable);
156 rtrs_clt_reset_cpu_migr_stats(s, enable);
157 rtrs_clt_reset_reconnects_stat(s, enable);
158 atomic_set(&s->inflight, 0);
165 static inline void rtrs_clt_update_rdma_stats(struct rtrs_clt_stats *stats,
168 this_cpu_inc(stats->pcpu_stats->rdma.dir[d].cnt);
169 this_cpu_add(stats->pcpu_stats->rdma.dir[d].size_total, size);
172 void rtrs_clt_update_all_stats(struct rtrs_clt_io_req *req, int dir)
174 struct rtrs_clt_con *con = req->con;
175 struct rtrs_clt_path *clt_path = to_clt_path(con->c.path);
176 struct rtrs_clt_stats *stats = clt_path->stats;
179 len = req->usr_len + req->data_len;
180 rtrs_clt_update_rdma_stats(stats, len, dir);
181 if (req->mp_policy == MP_POLICY_MIN_INFLIGHT)
182 atomic_inc(&stats->inflight);
185 int rtrs_clt_init_stats(struct rtrs_clt_stats *stats)
187 stats->pcpu_stats = alloc_percpu(typeof(*stats->pcpu_stats));
188 if (!stats->pcpu_stats)
192 * successful_cnt will be set to 0 after session
193 * is established for the first time
195 stats->reconnects.successful_cnt = -1;