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 ([email protected])
   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_readahead;
  14 atomic_t netfs_n_rh_read_folio;
  15 atomic_t netfs_n_rh_read_single;
  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_buffered_write;
  33 atomic_t netfs_n_wh_writethrough;
  34 atomic_t netfs_n_wh_dio_write;
  35 atomic_t netfs_n_wh_writepages;
  36 atomic_t netfs_n_wh_copy_to_cache;
  37 atomic_t netfs_n_wh_wstream_conflict;
  38 atomic_t netfs_n_wh_upload;
  39 atomic_t netfs_n_wh_upload_done;
  40 atomic_t netfs_n_wh_upload_failed;
  41 atomic_t netfs_n_wh_write;
  42 atomic_t netfs_n_wh_write_done;
  43 atomic_t netfs_n_wh_write_failed;
  44 atomic_t netfs_n_wb_lock_skip;
  45 atomic_t netfs_n_wb_lock_wait;
  46 atomic_t netfs_n_folioq;
  47
  48 int netfs_stats_show(struct seq_file *m, void *v)
  49 {
  50         seq_printf(m, "Reads  : DR=%u RA=%u RF=%u RS=%u WB=%u WBZ=%u\n",
  51                    atomic_read(&netfs_n_rh_dio_read),
  52                    atomic_read(&netfs_n_rh_readahead),
  53                    atomic_read(&netfs_n_rh_read_folio),
  54                    atomic_read(&netfs_n_rh_read_single),
  55                    atomic_read(&netfs_n_rh_write_begin),
  56                    atomic_read(&netfs_n_rh_write_zskip));
  57         seq_printf(m, "Writes : BW=%u WT=%u DW=%u WP=%u 2C=%u\n",
  58                    atomic_read(&netfs_n_wh_buffered_write),
  59                    atomic_read(&netfs_n_wh_writethrough),
  60                    atomic_read(&netfs_n_wh_dio_write),
  61                    atomic_read(&netfs_n_wh_writepages),
  62                    atomic_read(&netfs_n_wh_copy_to_cache));
  63         seq_printf(m, "ZeroOps: ZR=%u sh=%u sk=%u\n",
  64                    atomic_read(&netfs_n_rh_zero),
  65                    atomic_read(&netfs_n_rh_short_read),
  66                    atomic_read(&netfs_n_rh_write_zskip));
  67         seq_printf(m, "DownOps: DL=%u ds=%u df=%u di=%u\n",
  68                    atomic_read(&netfs_n_rh_download),
  69                    atomic_read(&netfs_n_rh_download_done),
  70                    atomic_read(&netfs_n_rh_download_failed),
  71                    atomic_read(&netfs_n_rh_download_instead));
  72         seq_printf(m, "CaRdOps: RD=%u rs=%u rf=%u\n",
  73                    atomic_read(&netfs_n_rh_read),
  74                    atomic_read(&netfs_n_rh_read_done),
  75                    atomic_read(&netfs_n_rh_read_failed));
  76         seq_printf(m, "UpldOps: UL=%u us=%u uf=%u\n",
  77                    atomic_read(&netfs_n_wh_upload),
  78                    atomic_read(&netfs_n_wh_upload_done),
  79                    atomic_read(&netfs_n_wh_upload_failed));
  80         seq_printf(m, "CaWrOps: WR=%u ws=%u wf=%u\n",
  81                    atomic_read(&netfs_n_wh_write),
  82                    atomic_read(&netfs_n_wh_write_done),
  83                    atomic_read(&netfs_n_wh_write_failed));
  84         seq_printf(m, "Objs   : rr=%u sr=%u foq=%u wsc=%u\n",
  85                    atomic_read(&netfs_n_rh_rreq),
  86                    atomic_read(&netfs_n_rh_sreq),
  87                    atomic_read(&netfs_n_folioq),
  88                    atomic_read(&netfs_n_wh_wstream_conflict));
  89         seq_printf(m, "WbLock : skip=%u wait=%u\n",
  90                    atomic_read(&netfs_n_wb_lock_skip),
  91                    atomic_read(&netfs_n_wb_lock_wait));
  92         return fscache_stats_show(m);
  93 }
  94 EXPORT_SYMBOL(netfs_stats_show);