201 строка
4.8 KiB
C
201 строка
4.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* RDMA Transport Layer
|
|
*
|
|
* Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
|
|
* Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
|
|
* Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
|
|
*/
|
|
#undef pr_fmt
|
|
#define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt
|
|
|
|
#include "rtrs-clt.h"
|
|
|
|
void rtrs_clt_update_wc_stats(struct rtrs_clt_con *con)
|
|
{
|
|
struct rtrs_clt_sess *sess = to_clt_sess(con->c.sess);
|
|
struct rtrs_clt_stats *stats = sess->stats;
|
|
struct rtrs_clt_stats_pcpu *s;
|
|
int cpu;
|
|
|
|
cpu = raw_smp_processor_id();
|
|
s = this_cpu_ptr(stats->pcpu_stats);
|
|
if (unlikely(con->cpu != cpu)) {
|
|
s->cpu_migr.to++;
|
|
|
|
/* Careful here, override s pointer */
|
|
s = per_cpu_ptr(stats->pcpu_stats, con->cpu);
|
|
atomic_inc(&s->cpu_migr.from);
|
|
}
|
|
}
|
|
|
|
void rtrs_clt_inc_failover_cnt(struct rtrs_clt_stats *stats)
|
|
{
|
|
struct rtrs_clt_stats_pcpu *s;
|
|
|
|
s = this_cpu_ptr(stats->pcpu_stats);
|
|
s->rdma.failover_cnt++;
|
|
}
|
|
|
|
int rtrs_clt_stats_migration_cnt_to_str(struct rtrs_clt_stats *stats,
|
|
char *buf, size_t len)
|
|
{
|
|
struct rtrs_clt_stats_pcpu *s;
|
|
|
|
size_t used;
|
|
int cpu;
|
|
|
|
used = scnprintf(buf, len, " ");
|
|
for_each_possible_cpu(cpu)
|
|
used += scnprintf(buf + used, len - used, " CPU%u", cpu);
|
|
|
|
used += scnprintf(buf + used, len - used, "\nfrom:");
|
|
for_each_possible_cpu(cpu) {
|
|
s = per_cpu_ptr(stats->pcpu_stats, cpu);
|
|
used += scnprintf(buf + used, len - used, " %d",
|
|
atomic_read(&s->cpu_migr.from));
|
|
}
|
|
|
|
used += scnprintf(buf + used, len - used, "\nto :");
|
|
for_each_possible_cpu(cpu) {
|
|
s = per_cpu_ptr(stats->pcpu_stats, cpu);
|
|
used += scnprintf(buf + used, len - used, " %d",
|
|
s->cpu_migr.to);
|
|
}
|
|
used += scnprintf(buf + used, len - used, "\n");
|
|
|
|
return used;
|
|
}
|
|
|
|
int rtrs_clt_stats_reconnects_to_str(struct rtrs_clt_stats *stats, char *buf,
|
|
size_t len)
|
|
{
|
|
return scnprintf(buf, len, "%d %d\n",
|
|
stats->reconnects.successful_cnt,
|
|
stats->reconnects.fail_cnt);
|
|
}
|
|
|
|
ssize_t rtrs_clt_stats_rdma_to_str(struct rtrs_clt_stats *stats,
|
|
char *page, size_t len)
|
|
{
|
|
struct rtrs_clt_stats_rdma sum;
|
|
struct rtrs_clt_stats_rdma *r;
|
|
int cpu;
|
|
|
|
memset(&sum, 0, sizeof(sum));
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
r = &per_cpu_ptr(stats->pcpu_stats, cpu)->rdma;
|
|
|
|
sum.dir[READ].cnt += r->dir[READ].cnt;
|
|
sum.dir[READ].size_total += r->dir[READ].size_total;
|
|
sum.dir[WRITE].cnt += r->dir[WRITE].cnt;
|
|
sum.dir[WRITE].size_total += r->dir[WRITE].size_total;
|
|
sum.failover_cnt += r->failover_cnt;
|
|
}
|
|
|
|
return scnprintf(page, len, "%llu %llu %llu %llu %u %llu\n",
|
|
sum.dir[READ].cnt, sum.dir[READ].size_total,
|
|
sum.dir[WRITE].cnt, sum.dir[WRITE].size_total,
|
|
atomic_read(&stats->inflight), sum.failover_cnt);
|
|
}
|
|
|
|
ssize_t rtrs_clt_reset_all_help(struct rtrs_clt_stats *s,
|
|
char *page, size_t len)
|
|
{
|
|
return scnprintf(page, len, "echo 1 to reset all statistics\n");
|
|
}
|
|
|
|
int rtrs_clt_reset_rdma_stats(struct rtrs_clt_stats *stats, bool enable)
|
|
{
|
|
struct rtrs_clt_stats_pcpu *s;
|
|
int cpu;
|
|
|
|
if (!enable)
|
|
return -EINVAL;
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
s = per_cpu_ptr(stats->pcpu_stats, cpu);
|
|
memset(&s->rdma, 0, sizeof(s->rdma));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int rtrs_clt_reset_cpu_migr_stats(struct rtrs_clt_stats *stats, bool enable)
|
|
{
|
|
struct rtrs_clt_stats_pcpu *s;
|
|
int cpu;
|
|
|
|
if (!enable)
|
|
return -EINVAL;
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
s = per_cpu_ptr(stats->pcpu_stats, cpu);
|
|
memset(&s->cpu_migr, 0, sizeof(s->cpu_migr));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int rtrs_clt_reset_reconnects_stat(struct rtrs_clt_stats *stats, bool enable)
|
|
{
|
|
if (!enable)
|
|
return -EINVAL;
|
|
|
|
memset(&stats->reconnects, 0, sizeof(stats->reconnects));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int rtrs_clt_reset_all_stats(struct rtrs_clt_stats *s, bool enable)
|
|
{
|
|
if (enable) {
|
|
rtrs_clt_reset_rdma_stats(s, enable);
|
|
rtrs_clt_reset_cpu_migr_stats(s, enable);
|
|
rtrs_clt_reset_reconnects_stat(s, enable);
|
|
atomic_set(&s->inflight, 0);
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline void rtrs_clt_update_rdma_stats(struct rtrs_clt_stats *stats,
|
|
size_t size, int d)
|
|
{
|
|
struct rtrs_clt_stats_pcpu *s;
|
|
|
|
s = this_cpu_ptr(stats->pcpu_stats);
|
|
s->rdma.dir[d].cnt++;
|
|
s->rdma.dir[d].size_total += size;
|
|
}
|
|
|
|
void rtrs_clt_update_all_stats(struct rtrs_clt_io_req *req, int dir)
|
|
{
|
|
struct rtrs_clt_con *con = req->con;
|
|
struct rtrs_clt_sess *sess = to_clt_sess(con->c.sess);
|
|
struct rtrs_clt_stats *stats = sess->stats;
|
|
unsigned int len;
|
|
|
|
len = req->usr_len + req->data_len;
|
|
rtrs_clt_update_rdma_stats(stats, len, dir);
|
|
if (sess->clt->mp_policy == MP_POLICY_MIN_INFLIGHT)
|
|
atomic_inc(&stats->inflight);
|
|
}
|
|
|
|
int rtrs_clt_init_stats(struct rtrs_clt_stats *stats)
|
|
{
|
|
stats->pcpu_stats = alloc_percpu(typeof(*stats->pcpu_stats));
|
|
if (!stats->pcpu_stats)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* successful_cnt will be set to 0 after session
|
|
* is established for the first time
|
|
*/
|
|
stats->reconnects.successful_cnt = -1;
|
|
|
|
return 0;
|
|
}
|