167 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.4 * All Rights Reserved.5 */6#include "xfs.h"7 8struct xstats xfsstats;9 10static int counter_val(struct xfsstats __percpu *stats, int idx)11{12 int val = 0, cpu;13 14 for_each_possible_cpu(cpu)15 val += *(((__u32 *)per_cpu_ptr(stats, cpu) + idx));16 return val;17}18 19int xfs_stats_format(struct xfsstats __percpu *stats, char *buf)20{21 int i, j;22 int len = 0;23 uint64_t xs_xstrat_bytes = 0;24 uint64_t xs_write_bytes = 0;25 uint64_t xs_read_bytes = 0;26 uint64_t defer_relog = 0;27 28 static const struct xstats_entry {29 char *desc;30 int endpoint;31 } xstats[] = {32 { "extent_alloc", xfsstats_offset(xs_abt_lookup) },33 { "abt", xfsstats_offset(xs_blk_mapr) },34 { "blk_map", xfsstats_offset(xs_bmbt_lookup) },35 { "bmbt", xfsstats_offset(xs_dir_lookup) },36 { "dir", xfsstats_offset(xs_trans_sync) },37 { "trans", xfsstats_offset(xs_ig_attempts) },38 { "ig", xfsstats_offset(xs_log_writes) },39 { "log", xfsstats_offset(xs_try_logspace)},40 { "push_ail", xfsstats_offset(xs_xstrat_quick)},41 { "xstrat", xfsstats_offset(xs_write_calls) },42 { "rw", xfsstats_offset(xs_attr_get) },43 { "attr", xfsstats_offset(xs_iflush_count)},44 { "icluster", xfsstats_offset(vn_active) },45 { "vnodes", xfsstats_offset(xb_get) },46 { "buf", xfsstats_offset(xs_abtb_2) },47 { "abtb2", xfsstats_offset(xs_abtc_2) },48 { "abtc2", xfsstats_offset(xs_bmbt_2) },49 { "bmbt2", xfsstats_offset(xs_ibt_2) },50 { "ibt2", xfsstats_offset(xs_fibt_2) },51 { "fibt2", xfsstats_offset(xs_rmap_2) },52 { "rmapbt", xfsstats_offset(xs_refcbt_2) },53 { "refcntbt", xfsstats_offset(xs_rmap_mem_2) },54 { "rmapbt_mem", xfsstats_offset(xs_rcbag_2) },55 { "rcbagbt", xfsstats_offset(xs_qm_dqreclaims)},56 /* we print both series of quota information together */57 { "qm", xfsstats_offset(xs_xstrat_bytes)},58 };59 60 /* Loop over all stats groups */61 62 for (i = j = 0; i < ARRAY_SIZE(xstats); i++) {63 len += scnprintf(buf + len, PATH_MAX - len, "%s",64 xstats[i].desc);65 /* inner loop does each group */66 for (; j < xstats[i].endpoint; j++)67 len += scnprintf(buf + len, PATH_MAX - len, " %u",68 counter_val(stats, j));69 len += scnprintf(buf + len, PATH_MAX - len, "\n");70 }71 /* extra precision counters */72 for_each_possible_cpu(i) {73 xs_xstrat_bytes += per_cpu_ptr(stats, i)->s.xs_xstrat_bytes;74 xs_write_bytes += per_cpu_ptr(stats, i)->s.xs_write_bytes;75 xs_read_bytes += per_cpu_ptr(stats, i)->s.xs_read_bytes;76 defer_relog += per_cpu_ptr(stats, i)->s.defer_relog;77 }78 79 len += scnprintf(buf + len, PATH_MAX-len, "xpc %llu %llu %llu\n",80 xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);81 len += scnprintf(buf + len, PATH_MAX-len, "defer_relog %llu\n",82 defer_relog);83 len += scnprintf(buf + len, PATH_MAX-len, "debug %u\n",84#if defined(DEBUG)85 1);86#else87 0);88#endif89 90 return len;91}92 93void xfs_stats_clearall(struct xfsstats __percpu *stats)94{95 int c;96 uint32_t vn_active;97 98 xfs_notice(NULL, "Clearing xfsstats");99 for_each_possible_cpu(c) {100 preempt_disable();101 /* save vn_active, it's a universal truth! */102 vn_active = per_cpu_ptr(stats, c)->s.vn_active;103 memset(per_cpu_ptr(stats, c), 0, sizeof(*stats));104 per_cpu_ptr(stats, c)->s.vn_active = vn_active;105 preempt_enable();106 }107}108 109#ifdef CONFIG_PROC_FS110/* legacy quota interfaces */111#ifdef CONFIG_XFS_QUOTA112 113#define XFSSTAT_START_XQMSTAT xfsstats_offset(xs_qm_dqreclaims)114#define XFSSTAT_END_XQMSTAT xfsstats_offset(xs_qm_dquot)115 116static int xqm_proc_show(struct seq_file *m, void *v)117{118 /* maximum; incore; ratio free to inuse; freelist */119 seq_printf(m, "%d\t%d\t%d\t%u\n",120 0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT),121 0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT + 1));122 return 0;123}124 125/* legacy quota stats interface no 2 */126static int xqmstat_proc_show(struct seq_file *m, void *v)127{128 int j;129 130 seq_puts(m, "qm");131 for (j = XFSSTAT_START_XQMSTAT; j < XFSSTAT_END_XQMSTAT; j++)132 seq_printf(m, " %u", counter_val(xfsstats.xs_stats, j));133 seq_putc(m, '\n');134 return 0;135}136#endif /* CONFIG_XFS_QUOTA */137 138int139xfs_init_procfs(void)140{141 if (!proc_mkdir("fs/xfs", NULL))142 return -ENOMEM;143 144 if (!proc_symlink("fs/xfs/stat", NULL,145 "/sys/fs/xfs/stats/stats"))146 goto out;147 148#ifdef CONFIG_XFS_QUOTA149 if (!proc_create_single("fs/xfs/xqmstat", 0, NULL, xqmstat_proc_show))150 goto out;151 if (!proc_create_single("fs/xfs/xqm", 0, NULL, xqm_proc_show))152 goto out;153#endif154 return 0;155 156out:157 remove_proc_subtree("fs/xfs", NULL);158 return -ENOMEM;159}160 161void162xfs_cleanup_procfs(void)163{164 remove_proc_subtree("fs/xfs", NULL);165}166#endif /* CONFIG_PROC_FS */167