fs/netfs/stats.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* Netfs support statistics
   3  *
   4  * Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
   5  * Written by David Howells (dhowells@redhat.com)
   6  */
   7
   8 #include <linux/export.h>
   9 #include <linux/seq_file.h>
  10 #include "internal.h"
  11
  12 atomic_t netfs_n_rh_dio_read;
  13 atomic_t netfs_n_rh_dio_write;
  14 atomic_t netfs_n_rh_readahead;
  15 atomic_t netfs_n_rh_readpage;
  16 atomic_t netfs_n_rh_rreq;
  17 atomic_t netfs_n_rh_sreq;
  18 atomic_t netfs_n_rh_download;
  19 atomic_t netfs_n_rh_download_done;
  20 atomic_t netfs_n_rh_download_failed;
  21 atomic_t netfs_n_rh_download_instead;
  22 atomic_t netfs_n_rh_read;
  23 atomic_t netfs_n_rh_read_done;
  24 atomic_t netfs_n_rh_read_failed;
  25 atomic_t netfs_n_rh_zero;
  26 atomic_t netfs_n_rh_short_read;
  27 atomic_t netfs_n_rh_write;
  28 atomic_t netfs_n_rh_write_begin;
  29 atomic_t netfs_n_rh_write_done;
  30 atomic_t netfs_n_rh_write_failed;
  31 atomic_t netfs_n_rh_write_zskip;
  32 atomic_t netfs_n_wh_upload;
  33 atomic_t netfs_n_wh_upload_done;
  34 atomic_t netfs_n_wh_upload_failed;
  35 atomic_t netfs_n_wh_write;
  36 atomic_t netfs_n_wh_write_done;
  37 atomic_t netfs_n_wh_write_failed;
  38
  39 int netfs_stats_show(struct seq_file *m, void *v)
  40 {
  41         seq_printf(m, "Netfs  : DR=%u DW=%u RA=%u RP=%u WB=%u WBZ=%u\n",
  42                    atomic_read(&netfs_n_rh_dio_read),
  43                    atomic_read(&netfs_n_rh_dio_write),
  44                    atomic_read(&netfs_n_rh_readahead),
  45                    atomic_read(&netfs_n_rh_readpage),
  46                    atomic_read(&netfs_n_rh_write_begin),
  47                    atomic_read(&netfs_n_rh_write_zskip));
  48         seq_printf(m, "Netfs  : ZR=%u sh=%u sk=%u\n",
  49                    atomic_read(&netfs_n_rh_zero),
  50                    atomic_read(&netfs_n_rh_short_read),
  51                    atomic_read(&netfs_n_rh_write_zskip));
  52         seq_printf(m, "Netfs  : DL=%u ds=%u df=%u di=%u\n",
  53                    atomic_read(&netfs_n_rh_download),
  54                    atomic_read(&netfs_n_rh_download_done),
  55                    atomic_read(&netfs_n_rh_download_failed),
  56                    atomic_read(&netfs_n_rh_download_instead));
  57         seq_printf(m, "Netfs  : RD=%u rs=%u rf=%u\n",
  58                    atomic_read(&netfs_n_rh_read),
  59                    atomic_read(&netfs_n_rh_read_done),
  60                    atomic_read(&netfs_n_rh_read_failed));
  61         seq_printf(m, "Netfs  : UL=%u us=%u uf=%u\n",
  62                    atomic_read(&netfs_n_wh_upload),
  63                    atomic_read(&netfs_n_wh_upload_done),
  64                    atomic_read(&netfs_n_wh_upload_failed));
  65         seq_printf(m, "Netfs  : WR=%u ws=%u wf=%u\n",
  66                    atomic_read(&netfs_n_wh_write),
  67                    atomic_read(&netfs_n_wh_write_done),
  68                    atomic_read(&netfs_n_wh_write_failed));
  69         seq_printf(m, "Netfs  : rr=%u sr=%u\n",
  70                    atomic_read(&netfs_n_rh_rreq),
  71                    atomic_read(&netfs_n_rh_sreq));
  72         return fscache_stats_show(m);
  73 }
  74 EXPORT_SYMBOL(netfs_stats_show);