LXR linux/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
  14int 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
  26ssize_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
  31        return sysfs_emit(page, "%lld %lld %lld %lldn %u\n",
  32                          (s64)atomic64_read(&r->dir[READ].cnt),
  33                          (s64)atomic64_read(&r->dir[READ].size_total),
  34                          (s64)atomic64_read(&r->dir[WRITE].cnt),
  35                          (s64)atomic64_read(&r->dir[WRITE].size_total), 0);
  36}
  37