drivers/infiniband/ulp/rtrs/rtrs-srv-stats.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * RDMA Transport Layer
   4  *
   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.
   8  */
   9 #undef pr_fmt
  10 #define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt
  11
  12 #include "rtrs-srv.h"
  13
  14 int rtrs_srv_reset_rdma_stats(struct rtrs_srv_stats *stats, bool enable)
  15 {
  16         if (enable) {
  17                 struct rtrs_srv_stats_rdma_stats *r = &stats->rdma_stats;
  18
  19                 memset(r, 0, sizeof(*r));
  20                 return 0;
  21         }
  22
  23         return -EINVAL;
  24 }
  25
  26 ssize_t rtrs_srv_stats_rdma_to_str(struct rtrs_srv_stats *stats,
  27                                     char *page, size_t len)
  28 {
  29         struct rtrs_srv_stats_rdma_stats *r = &stats->rdma_stats;
  30         struct rtrs_srv_sess *sess = stats->sess;
  31
  32         return scnprintf(page, len, "%lld %lld %lld %lld %u\n",
  33                          (s64)atomic64_read(&r->dir[READ].cnt),
  34                          (s64)atomic64_read(&r->dir[READ].size_total),
  35                          (s64)atomic64_read(&r->dir[WRITE].cnt),
  36                          (s64)atomic64_read(&r->dir[WRITE].size_total),
  37                          atomic_read(&sess->ids_inflight));
  38 }