include/sys/dataset_kstats.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2018 by Delphix. All rights reserved.
  24  * Copyright (c) 2018 Datto Inc.
  25  */
  26
  27 #ifndef _SYS_DATASET_KSTATS_H
  28 #define _SYS_DATASET_KSTATS_H
  29
  30 #include <sys/aggsum.h>
  31 #include <sys/dmu.h>
  32 #include <sys/kstat.h>
  33
  34 typedef struct dataset_aggsum_stats_t {
  35         aggsum_t das_writes;
  36         aggsum_t das_nwritten;
  37         aggsum_t das_reads;
  38         aggsum_t das_nread;
  39         aggsum_t das_nunlinks;
  40         aggsum_t das_nunlinked;
  41 } dataset_aggsum_stats_t;
  42
  43 typedef struct dataset_kstat_values {
  44         kstat_named_t dkv_ds_name;
  45         kstat_named_t dkv_writes;
  46         kstat_named_t dkv_nwritten;
  47         kstat_named_t dkv_reads;
  48         kstat_named_t dkv_nread;
  49         /*
  50          * nunlinks is initialized to the unlinked set size on mount and
  51          * is incremented whenever a new entry is added to the unlinked set
  52          */
  53         kstat_named_t dkv_nunlinks;
  54         /*
  55          * nunlinked is initialized to zero on mount and is incremented when an
  56          * entry is removed from the unlinked set
  57          */
  58         kstat_named_t dkv_nunlinked;
  59 } dataset_kstat_values_t;
  60
  61 typedef struct dataset_kstats {
  62         dataset_aggsum_stats_t dk_aggsums;
  63         kstat_t *dk_kstats;
  64 } dataset_kstats_t;
  65
  66 void dataset_kstats_create(dataset_kstats_t *, objset_t *);
  67 void dataset_kstats_destroy(dataset_kstats_t *);
  68
  69 void dataset_kstats_update_write_kstats(dataset_kstats_t *, int64_t);
  70 void dataset_kstats_update_read_kstats(dataset_kstats_t *, int64_t);
  71
  72 void dataset_kstats_update_nunlinks_kstat(dataset_kstats_t *, int64_t);
  73 void dataset_kstats_update_nunlinked_kstat(dataset_kstats_t *, int64_t);
  74
  75 #endif /* _SYS_DATASET_KSTATS_H */