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
 12atomic_t netfs_n_rh_dio_read;
 13atomic_t netfs_n_rh_readahead;
 14atomic_t netfs_n_rh_read_folio;
 15atomic_t netfs_n_rh_read_single;
 16atomic_t netfs_n_rh_rreq;
 17atomic_t netfs_n_rh_sreq;
 18atomic_t netfs_n_rh_download;
 19atomic_t netfs_n_rh_download_done;
 20atomic_t netfs_n_rh_download_failed;
 21atomic_t netfs_n_rh_download_instead;
 22atomic_t netfs_n_rh_read;
 23atomic_t netfs_n_rh_read_done;
 24atomic_t netfs_n_rh_read_failed;
 25atomic_t netfs_n_rh_zero;
 26atomic_t netfs_n_rh_short_read;
 27atomic_t netfs_n_rh_write;
 28atomic_t netfs_n_rh_write_begin;
 29atomic_t netfs_n_rh_write_done;
 30atomic_t netfs_n_rh_write_failed;
 31atomic_t netfs_n_rh_write_zskip;
 32atomic_t netfs_n_rh_retry_read_req;
 33atomic_t netfs_n_rh_retry_read_subreq;
 34atomic_t netfs_n_wh_buffered_write;
 35atomic_t netfs_n_wh_writethrough;
 36atomic_t netfs_n_wh_dio_write;
 37atomic_t netfs_n_wh_writepages;
 38atomic_t netfs_n_wh_copy_to_cache;
 39atomic_t netfs_n_wh_wstream_conflict;
 40atomic_t netfs_n_wh_upload;
 41atomic_t netfs_n_wh_upload_done;
 42atomic_t netfs_n_wh_upload_failed;
 43atomic_t netfs_n_wh_write;
 44atomic_t netfs_n_wh_write_done;
 45atomic_t netfs_n_wh_write_failed;
 46atomic_t netfs_n_wh_retry_write_req;
 47atomic_t netfs_n_wh_retry_write_subreq;
 48atomic_t netfs_n_wb_lock_skip;
 49atomic_t netfs_n_wb_lock_wait;
 50atomic_t netfs_n_folioq;
 51
 52int netfs_stats_show(struct seq_file *m, void *v)
 53{
 54	seq_printf(m, "Reads  : DR=%u RA=%u RF=%u RS=%u WB=%u WBZ=%u\n",
 55		   atomic_read(&netfs_n_rh_dio_read),
 56		   atomic_read(&netfs_n_rh_readahead),
 57		   atomic_read(&netfs_n_rh_read_folio),
 58		   atomic_read(&netfs_n_rh_read_single),
 59		   atomic_read(&netfs_n_rh_write_begin),
 60		   atomic_read(&netfs_n_rh_write_zskip));
 61	seq_printf(m, "Writes : BW=%u WT=%u DW=%u WP=%u 2C=%u\n",
 62		   atomic_read(&netfs_n_wh_buffered_write),
 63		   atomic_read(&netfs_n_wh_writethrough),
 64		   atomic_read(&netfs_n_wh_dio_write),
 65		   atomic_read(&netfs_n_wh_writepages),
 66		   atomic_read(&netfs_n_wh_copy_to_cache));
 67	seq_printf(m, "ZeroOps: ZR=%u sh=%u sk=%u\n",
 68		   atomic_read(&netfs_n_rh_zero),
 69		   atomic_read(&netfs_n_rh_short_read),
 70		   atomic_read(&netfs_n_rh_write_zskip));
 71	seq_printf(m, "DownOps: DL=%u ds=%u df=%u di=%u\n",
 72		   atomic_read(&netfs_n_rh_download),
 73		   atomic_read(&netfs_n_rh_download_done),
 74		   atomic_read(&netfs_n_rh_download_failed),
 75		   atomic_read(&netfs_n_rh_download_instead));
 76	seq_printf(m, "CaRdOps: RD=%u rs=%u rf=%u\n",
 77		   atomic_read(&netfs_n_rh_read),
 78		   atomic_read(&netfs_n_rh_read_done),
 79		   atomic_read(&netfs_n_rh_read_failed));
 80	seq_printf(m, "UpldOps: UL=%u us=%u uf=%u\n",
 81		   atomic_read(&netfs_n_wh_upload),
 82		   atomic_read(&netfs_n_wh_upload_done),
 83		   atomic_read(&netfs_n_wh_upload_failed));
 84	seq_printf(m, "CaWrOps: WR=%u ws=%u wf=%u\n",
 85		   atomic_read(&netfs_n_wh_write),
 86		   atomic_read(&netfs_n_wh_write_done),
 87		   atomic_read(&netfs_n_wh_write_failed));
 88	seq_printf(m, "Retries: rq=%u rs=%u wq=%u ws=%u\n",
 89		   atomic_read(&netfs_n_rh_retry_read_req),
 90		   atomic_read(&netfs_n_rh_retry_read_subreq),
 91		   atomic_read(&netfs_n_wh_retry_write_req),
 92		   atomic_read(&netfs_n_wh_retry_write_subreq));
 93	seq_printf(m, "Objs   : rr=%u sr=%u foq=%u wsc=%u\n",
 94		   atomic_read(&netfs_n_rh_rreq),
 95		   atomic_read(&netfs_n_rh_sreq),
 96		   atomic_read(&netfs_n_folioq),
 97		   atomic_read(&netfs_n_wh_wstream_conflict));
 98	seq_printf(m, "WbLock : skip=%u wait=%u\n",
 99		   atomic_read(&netfs_n_wb_lock_skip),
100		   atomic_read(&netfs_n_wb_lock_wait));
101	return fscache_stats_show(m);
102}
103EXPORT_SYMBOL(netfs_stats_show);