X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fllite%2Flproc_llite.c;h=a622863c7812538b889fea8230da516dd6b028c8;hp=35676f2bf5de2520773cd0b6a12de90608ffca15;hb=26bcb8fcd034f2edc993fa27a9158479836523b8;hpb=2dc9c16e770415d56839e1996015fec5fab93f29 diff --git a/lustre/llite/lproc_llite.c b/lustre/llite/lproc_llite.c index 35676f2..a622863 100644 --- a/lustre/llite/lproc_llite.c +++ b/lustre/llite/lproc_llite.c @@ -1,274 +1,1035 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * Copyright (C) 2002 Cluster File Systems, Inc. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * This file is part of Lustre, http://www.lustre.org. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. * - * Lustre is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). * - * Lustre is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * - * You should have received a copy of the GNU General Public License - * along with Lustre; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. * + * GPL HEADER END + */ +/* + * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2012, 2013, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. */ #define DEBUG_SUBSYSTEM S_LLITE #include -#include -#include -#include -#include +#include +#include +#include #include "llite_internal.h" +#include "vvp_internal.h" -/* /proc/lustre/llite mount point registration */ struct proc_dir_entry *proc_lustre_fs_root; -struct file_operations llite_dump_pgcache_fops; -#ifndef LPROCFS -int lprocfs_register_mountpoint(struct proc_dir_entry *parent, - struct super_block *sb, char *osc, char *mdc) +#ifdef LPROCFS +/* /proc/lustre/llite mount point registration */ +static const struct file_operations ll_rw_extents_stats_fops; +static const struct file_operations ll_rw_extents_stats_pp_fops; +static const struct file_operations ll_rw_offset_stats_fops; + +static int ll_blksize_seq_show(struct seq_file *m, void *v) { - return 0; + struct super_block *sb = m->private; + struct obd_statfs osfs; + int rc; + + LASSERT(sb != NULL); + rc = ll_statfs_internal(sb, &osfs, + cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), + OBD_STATFS_NODELAY); + if (!rc) + rc = seq_printf(m, "%u\n", osfs.os_bsize); + return rc; } -void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi){} -#else +LPROC_SEQ_FOPS_RO(ll_blksize); -long long mnt_instance; +static int ll_kbytestotal_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct obd_statfs osfs; + int rc; + + LASSERT(sb != NULL); + rc = ll_statfs_internal(sb, &osfs, + cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), + OBD_STATFS_NODELAY); + if (!rc) { + __u32 blk_size = osfs.os_bsize >> 10; + __u64 result = osfs.os_blocks; + + while (blk_size >>= 1) + result <<= 1; + + rc = seq_printf(m, LPU64"\n", result); + } + return rc; +} +LPROC_SEQ_FOPS_RO(ll_kbytestotal); -static int ll_rd_blksize(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int ll_kbytesfree_seq_show(struct seq_file *m, void *v) { - struct super_block *sb = (struct super_block *)data; - struct obd_statfs osfs; - int rc; + struct super_block *sb = m->private; + struct obd_statfs osfs; + int rc; + + LASSERT(sb != NULL); + rc = ll_statfs_internal(sb, &osfs, + cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), + OBD_STATFS_NODELAY); + if (!rc) { + __u32 blk_size = osfs.os_bsize >> 10; + __u64 result = osfs.os_bfree; + + while (blk_size >>= 1) + result <<= 1; + + rc = seq_printf(m, LPU64"\n", result); + } + return rc; +} +LPROC_SEQ_FOPS_RO(ll_kbytesfree); - LASSERT(sb != NULL); - rc = ll_statfs_internal(sb, &osfs, jiffies - HZ); - if (!rc) { - *eof = 1; - rc = snprintf(page, count, "%u\n", osfs.os_bsize); - } +static int ll_kbytesavail_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct obd_statfs osfs; + int rc; + + LASSERT(sb != NULL); + rc = ll_statfs_internal(sb, &osfs, + cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), + OBD_STATFS_NODELAY); + if (!rc) { + __u32 blk_size = osfs.os_bsize >> 10; + __u64 result = osfs.os_bavail; + + while (blk_size >>= 1) + result <<= 1; + + rc = seq_printf(m, LPU64"\n", result); + } + return rc; +} +LPROC_SEQ_FOPS_RO(ll_kbytesavail); + +static int ll_filestotal_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct obd_statfs osfs; + int rc; + + LASSERT(sb != NULL); + rc = ll_statfs_internal(sb, &osfs, + cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), + OBD_STATFS_NODELAY); + if (!rc) + rc = seq_printf(m, LPU64"\n", osfs.os_files); + return rc; +} +LPROC_SEQ_FOPS_RO(ll_filestotal); - return rc; +static int ll_filesfree_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct obd_statfs osfs; + int rc; + + LASSERT(sb != NULL); + rc = ll_statfs_internal(sb, &osfs, + cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), + OBD_STATFS_NODELAY); + if (!rc) + rc = seq_printf(m, LPU64"\n", osfs.os_ffree); + return rc; } +LPROC_SEQ_FOPS_RO(ll_filesfree); -static int ll_rd_kbytestotal(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int ll_client_type_seq_show(struct seq_file *m, void *v) { - struct super_block *sb = (struct super_block *)data; - struct obd_statfs osfs; - int rc; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); + int rc; - LASSERT(sb != NULL); - rc = ll_statfs_internal(sb, &osfs, jiffies - HZ); - if (!rc) { - __u32 blk_size = osfs.os_bsize >> 10; - __u64 result = osfs.os_blocks; + LASSERT(sbi != NULL); - while (blk_size >>= 1) - result <<= 1; + if (sbi->ll_flags & LL_SBI_RMT_CLIENT) + rc = seq_printf(m, "remote client\n"); + else + rc = seq_printf(m, "local client\n"); + return rc; +} +LPROC_SEQ_FOPS_RO(ll_client_type); - *eof = 1; - rc = snprintf(page, count, LPU64"\n", result); - } - return rc; +static int ll_fstype_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + LASSERT(sb != NULL); + return seq_printf(m, "%s\n", sb->s_type->name); } +LPROC_SEQ_FOPS_RO(ll_fstype); -static int ll_rd_kbytesfree(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int ll_sb_uuid_seq_show(struct seq_file *m, void *v) { - struct super_block *sb = (struct super_block *)data; - struct obd_statfs osfs; - int rc; + struct super_block *sb = m->private; - LASSERT(sb != NULL); - rc = ll_statfs_internal(sb, &osfs, jiffies - HZ); - if (!rc) { - __u32 blk_size = osfs.os_bsize >> 10; - __u64 result = osfs.os_bfree; + LASSERT(sb != NULL); + return seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid); +} +LPROC_SEQ_FOPS_RO(ll_sb_uuid); - while (blk_size >>= 1) - result <<= 1; +static int ll_xattr_cache_seq_show(struct seq_file *m, void *v) +{ + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); - *eof = 1; - rc = snprintf(page, count, LPU64"\n", result); - } - return rc; + return seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled); } -static int ll_rd_kbytesavail(char *page, char **start, off_t off, int count, - int *eof, void *data) +static ssize_t ll_xattr_cache_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) { - struct super_block *sb = (struct super_block *)data; - struct obd_statfs osfs; - int rc; + struct seq_file *m = file->private_data; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); + int val, rc; - LASSERT(sb != NULL); - rc = ll_statfs_internal(sb, &osfs, jiffies - HZ); - if (!rc) { - __u32 blk_size = osfs.os_bsize >> 10; - __u64 result = osfs.os_bavail; + rc = lprocfs_write_helper(buffer, count, &val); + if (rc) + return rc; - while (blk_size >>= 1) - result <<= 1; + if (val != 0 && val != 1) + return -ERANGE; - *eof = 1; - rc = snprintf(page, count, LPU64"\n", result); - } - return rc; + if (val == 1 && !(sbi->ll_flags & LL_SBI_XATTR_CACHE)) + return -ENOTSUPP; + + sbi->ll_xattr_cache_enabled = val; + + return count; } +LPROC_SEQ_FOPS(ll_xattr_cache); -static int ll_rd_filestotal(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int ll_site_stats_seq_show(struct seq_file *m, void *v) { - struct super_block *sb = (struct super_block *)data; - struct obd_statfs osfs; - int rc; + struct super_block *sb = m->private; - LASSERT(sb != NULL); - rc = ll_statfs_internal(sb, &osfs, jiffies - HZ); - if (!rc) { - *eof = 1; - rc = snprintf(page, count, LPU64"\n", osfs.os_files); - } - return rc; + /* + * See description of statistical counters in struct cl_site, and + * struct lu_site. + */ + return cl_site_stats_print(lu2cl_site(ll_s2sbi(sb)->ll_site), m); } +LPROC_SEQ_FOPS_RO(ll_site_stats); -static int ll_rd_filesfree(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int ll_max_readahead_mb_seq_show(struct seq_file *m, void *v) { - struct super_block *sb = (struct super_block *)data; - struct obd_statfs osfs; - int rc; + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + long pages_number; + int mult; - LASSERT(sb != NULL); - rc = ll_statfs_internal(sb, &osfs, jiffies - HZ); - if (!rc) { - *eof = 1; - rc = snprintf(page, count, LPU64"\n", osfs.os_ffree); - } - return rc; + spin_lock(&sbi->ll_lock); + pages_number = sbi->ll_ra_info.ra_max_pages; + spin_unlock(&sbi->ll_lock); + mult = 1 << (20 - PAGE_CACHE_SHIFT); + return lprocfs_seq_read_frac_helper(m, pages_number, mult); } -static int ll_rd_fstype(char *page, char **start, off_t off, int count, - int *eof, void *data) +static ssize_t +ll_max_readahead_mb_seq_write(struct file *file, const char __user *buffer, + size_t count, loff_t *off) { - struct super_block *sb = (struct super_block*)data; + struct seq_file *m = file->private_data; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); + __u64 val; + long pages_number; + int mult; + int rc; + + mult = 1 << (20 - PAGE_CACHE_SHIFT); + rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult); + if (rc) + return rc; + + if (val > LONG_MAX) + return -ERANGE; + pages_number = (long)val; + + if (pages_number < 0 || pages_number > totalram_pages / 2) { + /* 1/2 of RAM */ + CERROR("can't set file readahead more than %lu MB\n", + totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1)); + return -ERANGE; + } + + spin_lock(&sbi->ll_lock); + sbi->ll_ra_info.ra_max_pages = pages_number; + spin_unlock(&sbi->ll_lock); + return count; +} +LPROC_SEQ_FOPS(ll_max_readahead_mb); - LASSERT(sb != NULL); - *eof = 1; - return snprintf(page, count, "%s\n", sb->s_type->name); +static int ll_max_readahead_per_file_mb_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + long pages_number; + int mult; + + spin_lock(&sbi->ll_lock); + pages_number = sbi->ll_ra_info.ra_max_pages_per_file; + spin_unlock(&sbi->ll_lock); + + mult = 1 << (20 - PAGE_CACHE_SHIFT); + return lprocfs_seq_read_frac_helper(m, pages_number, mult); +} + +static ssize_t +ll_max_readahead_per_file_mb_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *m = file->private_data; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); + int mult, rc, pages_number; + + mult = 1 << (20 - PAGE_CACHE_SHIFT); + rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult); + if (rc) + return rc; + + if (pages_number < 0 || + pages_number > sbi->ll_ra_info.ra_max_pages) { + CERROR("can't set file readahead more than" + "max_read_ahead_mb %lu MB\n", + sbi->ll_ra_info.ra_max_pages); + return -ERANGE; + } + + spin_lock(&sbi->ll_lock); + sbi->ll_ra_info.ra_max_pages_per_file = pages_number; + spin_unlock(&sbi->ll_lock); + return count; } +LPROC_SEQ_FOPS(ll_max_readahead_per_file_mb); -static int ll_rd_sb_uuid(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int ll_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *v) { - struct super_block *sb = (struct super_block *)data; + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + long pages_number; + int mult; - LASSERT(sb != NULL); - *eof = 1; - return snprintf(page, count, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid); + spin_lock(&sbi->ll_lock); + pages_number = sbi->ll_ra_info.ra_max_read_ahead_whole_pages; + spin_unlock(&sbi->ll_lock); + + mult = 1 << (20 - PAGE_CACHE_SHIFT); + return lprocfs_seq_read_frac_helper(m, pages_number, mult); } -static int ll_rd_read_ahead(char *page, char **start, off_t off, int count, - int *eof, void *data) +static ssize_t +ll_max_read_ahead_whole_mb_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) { - struct super_block *sb = (struct super_block*)data; - struct ll_sb_info *sbi = ll_s2sbi(sb); + struct seq_file *m = file->private_data; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); + int mult, rc, pages_number; + + mult = 1 << (20 - PAGE_CACHE_SHIFT); + rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult); + if (rc) + return rc; + + /* Cap this at the current max readahead window size, the readahead + * algorithm does this anyway so it's pointless to set it larger. */ + if (pages_number < 0 || + pages_number > sbi->ll_ra_info.ra_max_pages_per_file) { + CERROR("can't set max_read_ahead_whole_mb more than " + "max_read_ahead_per_file_mb: %lu\n", + sbi->ll_ra_info.ra_max_pages_per_file >> + (20 - PAGE_CACHE_SHIFT)); + return -ERANGE; + } + + spin_lock(&sbi->ll_lock); + sbi->ll_ra_info.ra_max_read_ahead_whole_pages = pages_number; + spin_unlock(&sbi->ll_lock); + return count; +} +LPROC_SEQ_FOPS(ll_max_read_ahead_whole_mb); + +static int ll_max_cached_mb_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + struct cl_client_cache *cache = &sbi->ll_cache; + int shift = 20 - PAGE_CACHE_SHIFT; + long max_cached_mb; + long unused_mb; + + max_cached_mb = cache->ccc_lru_max >> shift; + unused_mb = atomic_long_read(&cache->ccc_lru_left) >> shift; + return seq_printf(m, + "users: %d\n" + "max_cached_mb: %ld\n" + "used_mb: %ld\n" + "unused_mb: %ld\n" + "reclaim_count: %u\n", + atomic_read(&cache->ccc_users), + max_cached_mb, + max_cached_mb - unused_mb, + unused_mb, + cache->ccc_lru_shrinkers); +} + +static ssize_t +ll_max_cached_mb_seq_write(struct file *file, const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *m = file->private_data; + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + struct cl_client_cache *cache = &sbi->ll_cache; + struct lu_env *env; + __u64 val; + long diff = 0; + long nrpages = 0; + long pages_number; + int refcheck; + int mult; + long rc; + char kernbuf[128]; + ENTRY; + + if (count >= sizeof(kernbuf)) + RETURN(-EINVAL); + + if (copy_from_user(kernbuf, buffer, count)) + RETURN(-EFAULT); + kernbuf[count] = 0; + + mult = 1 << (20 - PAGE_CACHE_SHIFT); + buffer += lprocfs_find_named_value(kernbuf, "max_cached_mb:", &count) - + kernbuf; + rc = lprocfs_write_frac_u64_helper(buffer, count, &val, mult); + if (rc) + RETURN(rc); + + if (val > LONG_MAX) + return -ERANGE; + pages_number = (long)val; + + if (pages_number < 0 || pages_number > totalram_pages) { + CERROR("%s: can't set max cache more than %lu MB\n", + ll_get_fsname(sb, NULL, 0), + totalram_pages >> (20 - PAGE_CACHE_SHIFT)); + RETURN(-ERANGE); + } + /* Allow enough cache so clients can make well-formed RPCs */ + pages_number = max_t(long, pages_number, PTLRPC_MAX_BRW_PAGES); + + spin_lock(&sbi->ll_lock); + diff = pages_number - cache->ccc_lru_max; + spin_unlock(&sbi->ll_lock); + + /* easy - add more LRU slots. */ + if (diff >= 0) { + atomic_long_add(diff, &cache->ccc_lru_left); + GOTO(out, rc = 0); + } + + env = cl_env_get(&refcheck); + if (IS_ERR(env)) + RETURN(rc); + + diff = -diff; + while (diff > 0) { + long tmp; + + /* reduce LRU budget from free slots. */ + do { + long ov, nv; + + ov = atomic_long_read(&cache->ccc_lru_left); + if (ov == 0) + break; + + nv = ov > diff ? ov - diff : 0; + rc = atomic_long_cmpxchg(&cache->ccc_lru_left, ov, nv); + if (likely(ov == rc)) { + diff -= ov - nv; + nrpages += ov - nv; + break; + } + } while (1); + + if (diff <= 0) + break; + + if (sbi->ll_dt_exp == NULL) { /* being initialized */ + rc = -ENODEV; + break; + } + + /* difficult - have to ask OSCs to drop LRU slots. */ + tmp = diff << 1; + rc = obd_set_info_async(env, sbi->ll_dt_exp, + sizeof(KEY_CACHE_LRU_SHRINK), + KEY_CACHE_LRU_SHRINK, + sizeof(tmp), &tmp, NULL); + if (rc < 0) + break; + } + cl_env_put(env, &refcheck); + +out: + if (rc >= 0) { + spin_lock(&sbi->ll_lock); + cache->ccc_lru_max = pages_number; + spin_unlock(&sbi->ll_lock); + rc = count; + } else { + atomic_long_add(nrpages, &cache->ccc_lru_left); + } + return rc; +} +LPROC_SEQ_FOPS(ll_max_cached_mb); + +static int ll_checksum_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + + return seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0); +} + +static ssize_t ll_checksum_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *m = file->private_data; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); int val, rc; - ENTRY; - *eof = 1; - val = (sbi->ll_flags & LL_SBI_READAHEAD) ? 1 : 0; - rc = snprintf(page, count, "%d\n", val); - RETURN(rc); + if (!sbi->ll_dt_exp) + /* Not set up yet */ + return -EAGAIN; + + rc = lprocfs_write_helper(buffer, count, &val); + if (rc) + return rc; + if (val) + sbi->ll_flags |= LL_SBI_CHECKSUM; + else + sbi->ll_flags &= ~LL_SBI_CHECKSUM; + + rc = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM), + KEY_CHECKSUM, sizeof(val), &val, NULL); + if (rc) + CWARN("Failed to set OSC checksum flags: %d\n", rc); + + return count; +} +LPROC_SEQ_FOPS(ll_checksum); + +static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + + return seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk); } -static int ll_wr_read_ahead(struct file *file, const char *buffer, - unsigned long count, void *data) +static ssize_t ll_max_rw_chunk_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) { - struct super_block *sb = (struct super_block*)data; - struct ll_sb_info *sbi = ll_s2sbi(sb); - int readahead; - ENTRY; + struct seq_file *m = file->private_data; + struct super_block *sb = m->private; + int rc, val; + + rc = lprocfs_write_helper(buffer, count, &val); + if (rc) + return rc; + ll_s2sbi(sb)->ll_max_rw_chunk = val; + return count; +} +LPROC_SEQ_FOPS(ll_max_rw_chunk); + +static int ll_rd_track_id(struct seq_file *m, enum stats_track_type type) +{ + struct super_block *sb = m->private; + + if (ll_s2sbi(sb)->ll_stats_track_type == type) { + return seq_printf(m, "%d\n", + ll_s2sbi(sb)->ll_stats_track_id); + } else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL) { + return seq_printf(m, "0 (all)\n"); + } else { + return seq_printf(m, "untracked\n"); + } +} - if (1 != sscanf(buffer, "%d", &readahead)) - RETURN(-EINVAL); +static int ll_wr_track_id(const char __user *buffer, unsigned long count, + void *data, enum stats_track_type type) +{ + struct super_block *sb = data; + int rc, pid; - if (readahead) - sbi->ll_flags |= LL_SBI_READAHEAD; + rc = lprocfs_write_helper(buffer, count, &pid); + if (rc) + return rc; + ll_s2sbi(sb)->ll_stats_track_id = pid; + if (pid == 0) + ll_s2sbi(sb)->ll_stats_track_type = STATS_TRACK_ALL; else - sbi->ll_flags &= ~LL_SBI_READAHEAD; + ll_s2sbi(sb)->ll_stats_track_type = type; + lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats); + return count; +} - RETURN(count); +static int ll_track_pid_seq_show(struct seq_file *m, void *v) +{ + return ll_rd_track_id(m, STATS_TRACK_PID); } -static int ll_rd_max_read_ahead_mb(char *page, char **start, off_t off, - int count, int *eof, void *data) +static ssize_t ll_track_pid_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) { - struct super_block *sb = data; - struct ll_sb_info *sbi = ll_s2sbi(sb); - unsigned val; + struct seq_file *seq = file->private_data; + return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PID); +} +LPROC_SEQ_FOPS(ll_track_pid); - spin_lock(&sbi->ll_lock); - val = (sbi->ll_max_read_ahead_pages << PAGE_CACHE_SHIFT) >> 20; - spin_unlock(&sbi->ll_lock); +static int ll_track_ppid_seq_show(struct seq_file *m, void *v) +{ + return ll_rd_track_id(m, STATS_TRACK_PPID); +} - return snprintf(page, count, "%u\n", val); +static ssize_t ll_track_ppid_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *seq = file->private_data; + return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_PPID); } +LPROC_SEQ_FOPS(ll_track_ppid); -static int ll_wr_max_read_ahead_mb(struct file *file, const char *buffer, - unsigned long count, void *data) +static int ll_track_gid_seq_show(struct seq_file *m, void *v) { - struct super_block *sb = data; - struct ll_sb_info *sbi = ll_s2sbi(sb); - int val, rc; + return ll_rd_track_id(m, STATS_TRACK_GID); +} + +static ssize_t ll_track_gid_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *seq = file->private_data; + return ll_wr_track_id(buffer, count, seq->private, STATS_TRACK_GID); +} +LPROC_SEQ_FOPS(ll_track_gid); + +static int ll_statahead_max_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + + return seq_printf(m, "%u\n", sbi->ll_sa_max); +} + +static ssize_t ll_statahead_max_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *m = file->private_data; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); + int val, rc; rc = lprocfs_write_helper(buffer, count, &val); if (rc) return rc; - if (val < 0 || val > (num_physpages << PAGE_SHIFT) >> 20) - return -ERANGE; + if (val >= 0 && val <= LL_SA_RPC_MAX) + sbi->ll_sa_max = val; + else + CERROR("Bad statahead_max value %d. Valid values are in the " + "range [0, %d]\n", val, LL_SA_RPC_MAX); - spin_lock(&sbi->ll_lock); - sbi->ll_max_read_ahead_pages = (val << 20) >> PAGE_CACHE_SHIFT; - spin_unlock(&sbi->ll_lock); + return count; +} +LPROC_SEQ_FOPS(ll_statahead_max); + +static int ll_statahead_agl_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + + return seq_printf(m, "%u\n", + sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0); +} + +static ssize_t ll_statahead_agl_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *m = file->private_data; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); + int val, rc; + + rc = lprocfs_write_helper(buffer, count, &val); + if (rc) + return rc; + + if (val) + sbi->ll_flags |= LL_SBI_AGL_ENABLED; + else + sbi->ll_flags &= ~LL_SBI_AGL_ENABLED; return count; } +LPROC_SEQ_FOPS(ll_statahead_agl); + +static int ll_statahead_stats_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + + return seq_printf(m, + "statahead total: %u\n" + "statahead wrong: %u\n" + "agl total: %u\n", + atomic_read(&sbi->ll_sa_total), + atomic_read(&sbi->ll_sa_wrong), + atomic_read(&sbi->ll_agl_total)); +} +LPROC_SEQ_FOPS_RO(ll_statahead_stats); + +static int ll_lazystatfs_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); -static struct lprocfs_vars lprocfs_obd_vars[] = { - { "uuid", ll_rd_sb_uuid, 0, 0 }, - //{ "mntpt_path", ll_rd_path, 0, 0 }, - { "fstype", ll_rd_fstype, 0, 0 }, - { "blocksize", ll_rd_blksize, 0, 0 }, - { "kbytestotal", ll_rd_kbytestotal, 0, 0 }, - { "kbytesfree", ll_rd_kbytesfree, 0, 0 }, - { "kbytesavail", ll_rd_kbytesavail, 0, 0 }, - { "filestotal", ll_rd_filestotal, 0, 0 }, - { "filesfree", ll_rd_filesfree, 0, 0 }, - //{ "filegroups", lprocfs_rd_filegroups, 0, 0 }, - { "read_ahead", ll_rd_read_ahead, ll_wr_read_ahead, 0 }, - { "max_read_ahead_mb", ll_rd_max_read_ahead_mb, - ll_wr_max_read_ahead_mb, 0 }, - { 0 } + return seq_printf(m, "%u\n", + (sbi->ll_flags & LL_SBI_LAZYSTATFS) ? 1 : 0); +} + +static ssize_t ll_lazystatfs_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *m = file->private_data; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private); + int val, rc; + + rc = lprocfs_write_helper(buffer, count, &val); + if (rc) + return rc; + + if (val) + sbi->ll_flags |= LL_SBI_LAZYSTATFS; + else + sbi->ll_flags &= ~LL_SBI_LAZYSTATFS; + + return count; +} +LPROC_SEQ_FOPS(ll_lazystatfs); + +static int ll_max_easize_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + unsigned int ealen; + int rc; + + rc = ll_get_max_mdsize(sbi, &ealen); + if (rc) + return rc; + + return seq_printf(m, "%u\n", ealen); +} +LPROC_SEQ_FOPS_RO(ll_max_easize); + +static int ll_defult_easize_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + unsigned int ealen; + int rc; + + rc = ll_get_default_mdsize(sbi, &ealen); + if (rc) + return rc; + + return seq_printf(m, "%u\n", ealen); +} +LPROC_SEQ_FOPS_RO(ll_defult_easize); + +static int ll_max_cookiesize_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + unsigned int cookielen; + int rc; + + rc = ll_get_max_cookiesize(sbi, &cookielen); + if (rc) + return rc; + + return seq_printf(m, "%u\n", cookielen); +} +LPROC_SEQ_FOPS_RO(ll_max_cookiesize); + +static int ll_defult_cookiesize_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + unsigned int cookielen; + int rc; + + rc = ll_get_default_cookiesize(sbi, &cookielen); + if (rc) + return rc; + + return seq_printf(m, "%u\n", cookielen); +} +LPROC_SEQ_FOPS_RO(ll_defult_cookiesize); + +static int ll_sbi_flags_seq_show(struct seq_file *m, void *v) +{ + const char *str[] = LL_SBI_FLAGS; + struct super_block *sb = m->private; + int flags = ll_s2sbi(sb)->ll_flags; + int i = 0; + + while (flags != 0) { + if (ARRAY_SIZE(str) <= i) { + CERROR("%s: Revise array LL_SBI_FLAGS to match sbi " + "flags please.\n", ll_get_fsname(sb, NULL, 0)); + return -EINVAL; + } + + if (flags & 0x1) + seq_printf(m, "%s ", str[i]); + flags >>= 1; + ++i; + } + seq_printf(m, "\b\n"); + return 0; +} +LPROC_SEQ_FOPS_RO(ll_sbi_flags); + +static int ll_unstable_stats_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + struct cl_client_cache *cache = &sbi->ll_cache; + long pages; + int mb; + + pages = atomic_long_read(&cache->ccc_unstable_nr); + mb = (pages * PAGE_CACHE_SIZE) >> 20; + + return seq_printf(m, "unstable_check: %8d\n" + "unstable_pages: %12ld\n" + "unstable_mb: %8d\n", + cache->ccc_unstable_check, pages, mb); +} + +static ssize_t ll_unstable_stats_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *unused) +{ + struct seq_file *seq = file->private_data; + struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)seq->private); + char kernbuf[128]; + int val, rc; + + if (count == 0) + return 0; + if (count >= sizeof(kernbuf)) + return -EINVAL; + + if (copy_from_user(kernbuf, buffer, count)) + return -EFAULT; + kernbuf[count] = 0; + + buffer += lprocfs_find_named_value(kernbuf, "unstable_check:", &count) - + kernbuf; + rc = lprocfs_write_helper(buffer, count, &val); + if (rc < 0) + return rc; + + /* borrow lru lock to set the value */ + spin_lock(&sbi->ll_cache.ccc_lru_lock); + sbi->ll_cache.ccc_unstable_check = !!val; + spin_unlock(&sbi->ll_cache.ccc_lru_lock); + + return count; +} +LPROC_SEQ_FOPS(ll_unstable_stats); + +static int ll_root_squash_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + struct root_squash_info *squash = &sbi->ll_squash; + + return seq_printf(m, "%u:%u\n", squash->rsi_uid, squash->rsi_gid); +} + +static ssize_t ll_root_squash_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *m = file->private_data; + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + struct root_squash_info *squash = &sbi->ll_squash; + + return lprocfs_wr_root_squash(buffer, count, squash, + ll_get_fsname(sb, NULL, 0)); +} +LPROC_SEQ_FOPS(ll_root_squash); + +static int ll_nosquash_nids_seq_show(struct seq_file *m, void *v) +{ + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + struct root_squash_info *squash = &sbi->ll_squash; + int len, rc; + + down_read(&squash->rsi_sem); + if (!list_empty(&squash->rsi_nosquash_nids)) { + len = cfs_print_nidlist(m->buf + m->count, m->size - m->count, + &squash->rsi_nosquash_nids); + m->count += len; + rc = seq_printf(m, "\n"); + } else { + rc = seq_printf(m, "NONE\n"); + } + up_read(&squash->rsi_sem); + + return rc; +} + +static ssize_t ll_nosquash_nids_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *m = file->private_data; + struct super_block *sb = m->private; + struct ll_sb_info *sbi = ll_s2sbi(sb); + struct root_squash_info *squash = &sbi->ll_squash; + int rc; + + rc = lprocfs_wr_nosquash_nids(buffer, count, squash, + ll_get_fsname(sb, NULL, 0)); + if (rc < 0) + return rc; + + ll_compute_rootsquash_state(sbi); + + return rc; +} +LPROC_SEQ_FOPS(ll_nosquash_nids); + +struct lprocfs_seq_vars lprocfs_llite_obd_vars[] = { + { .name = "uuid", + .fops = &ll_sb_uuid_fops }, + { .name = "fstype", + .fops = &ll_fstype_fops }, + { .name = "site", + .fops = &ll_site_stats_fops }, + { .name = "blocksize", + .fops = &ll_blksize_fops }, + { .name = "kbytestotal", + .fops = &ll_kbytestotal_fops }, + { .name = "kbytesfree", + .fops = &ll_kbytesfree_fops }, + { .name = "kbytesavail", + .fops = &ll_kbytesavail_fops }, + { .name = "filestotal", + .fops = &ll_filestotal_fops }, + { .name = "filesfree", + .fops = &ll_filesfree_fops }, + { .name = "client_type", + .fops = &ll_client_type_fops }, + { .name = "max_read_ahead_mb", + .fops = &ll_max_readahead_mb_fops }, + { .name = "max_read_ahead_per_file_mb", + .fops = &ll_max_readahead_per_file_mb_fops }, + { .name = "max_read_ahead_whole_mb", + .fops = &ll_max_read_ahead_whole_mb_fops }, + { .name = "max_cached_mb", + .fops = &ll_max_cached_mb_fops }, + { .name = "checksum_pages", + .fops = &ll_checksum_fops }, + { .name = "max_rw_chunk", + .fops = &ll_max_rw_chunk_fops }, + { .name = "stats_track_pid", + .fops = &ll_track_pid_fops }, + { .name = "stats_track_ppid", + .fops = &ll_track_ppid_fops }, + { .name = "stats_track_gid", + .fops = &ll_track_gid_fops }, + { .name = "statahead_max", + .fops = &ll_statahead_max_fops }, + { .name = "statahead_agl", + .fops = &ll_statahead_agl_fops }, + { .name = "statahead_stats", + .fops = &ll_statahead_stats_fops }, + { .name = "lazystatfs", + .fops = &ll_lazystatfs_fops }, + { .name = "max_easize", + .fops = &ll_max_easize_fops }, + { .name = "default_easize", + .fops = &ll_defult_easize_fops }, + { .name = "max_cookiesize", + .fops = &ll_max_cookiesize_fops }, + { .name = "default_cookiesize", + .fops = &ll_defult_cookiesize_fops }, + { .name = "sbi_flags", + .fops = &ll_sbi_flags_fops }, + { .name = "xattr_cache", + .fops = &ll_xattr_cache_fops }, + { .name = "unstable_stats", + .fops = &ll_unstable_stats_fops }, + { .name = "root_squash", + .fops = &ll_root_squash_fops }, + { .name = "nosquash_nids", + .fops = &ll_nosquash_nids_fops }, + { 0 } }; #define MAX_STRING_SIZE 128 -struct llite_file_opcode { +static const struct llite_file_opcode { __u32 opcode; __u32 type; const char *opname; @@ -276,14 +1037,6 @@ struct llite_file_opcode { /* file operation */ { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" }, { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" }, - { LPROC_LL_WB_WRITEPAGE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES, - "writeback_from_writepage" }, - { LPROC_LL_WB_PRESSURE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES, - "writeback_from_pressure" }, - { LPROC_LL_WB_OK, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES, - "writeback_ok_pages" }, - { LPROC_LL_WB_FAIL, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES, - "writeback_failed_pages" }, { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES, "read_bytes" }, { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES, @@ -292,349 +1045,643 @@ struct llite_file_opcode { "brw_read" }, { LPROC_LL_BRW_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES, "brw_write" }, - + { LPROC_LL_OSC_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES, + "osc_read" }, + { LPROC_LL_OSC_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES, + "osc_write" }, { LPROC_LL_IOCTL, LPROCFS_TYPE_REGS, "ioctl" }, { LPROC_LL_OPEN, LPROCFS_TYPE_REGS, "open" }, { LPROC_LL_RELEASE, LPROCFS_TYPE_REGS, "close" }, { LPROC_LL_MAP, LPROCFS_TYPE_REGS, "mmap" }, { LPROC_LL_LLSEEK, LPROCFS_TYPE_REGS, "seek" }, { LPROC_LL_FSYNC, LPROCFS_TYPE_REGS, "fsync" }, + { LPROC_LL_READDIR, LPROCFS_TYPE_REGS, "readdir" }, /* inode operation */ { LPROC_LL_SETATTR, LPROCFS_TYPE_REGS, "setattr" }, - { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "punch" }, -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) + { LPROC_LL_TRUNC, LPROCFS_TYPE_REGS, "truncate" }, + { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" }, { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" }, -#else - { LPROC_LL_REVALIDATE, LPROCFS_TYPE_REGS, "getattr" }, -#endif + /* dir inode operation */ + { LPROC_LL_CREATE, LPROCFS_TYPE_REGS, "create" }, + { LPROC_LL_LINK, LPROCFS_TYPE_REGS, "link" }, + { LPROC_LL_UNLINK, LPROCFS_TYPE_REGS, "unlink" }, + { LPROC_LL_SYMLINK, LPROCFS_TYPE_REGS, "symlink" }, + { LPROC_LL_MKDIR, LPROCFS_TYPE_REGS, "mkdir" }, + { LPROC_LL_RMDIR, LPROCFS_TYPE_REGS, "rmdir" }, + { LPROC_LL_MKNOD, LPROCFS_TYPE_REGS, "mknod" }, + { LPROC_LL_RENAME, LPROCFS_TYPE_REGS, "rename" }, /* special inode operation */ { LPROC_LL_STAFS, LPROCFS_TYPE_REGS, "statfs" }, { LPROC_LL_ALLOC_INODE, LPROCFS_TYPE_REGS, "alloc_inode" }, - { LPROC_LL_DIRECT_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES, - "direct_read" }, - { LPROC_LL_DIRECT_WRITE, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES, - "direct_write" }, + { LPROC_LL_SETXATTR, LPROCFS_TYPE_REGS, "setxattr" }, + { LPROC_LL_GETXATTR, LPROCFS_TYPE_REGS, "getxattr" }, + { LPROC_LL_GETXATTR_HITS, LPROCFS_TYPE_REGS, "getxattr_hits" }, + { LPROC_LL_LISTXATTR, LPROCFS_TYPE_REGS, "listxattr" }, + { LPROC_LL_REMOVEXATTR, LPROCFS_TYPE_REGS, "removexattr" }, + { LPROC_LL_INODE_PERM, LPROCFS_TYPE_REGS, "inode_permission" }, +}; +void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count) +{ + if (!sbi->ll_stats) + return; + if (sbi->ll_stats_track_type == STATS_TRACK_ALL) + lprocfs_counter_add(sbi->ll_stats, op, count); + else if (sbi->ll_stats_track_type == STATS_TRACK_PID && + sbi->ll_stats_track_id == current->pid) + lprocfs_counter_add(sbi->ll_stats, op, count); + else if (sbi->ll_stats_track_type == STATS_TRACK_PPID && + sbi->ll_stats_track_id == current->parent->pid) + lprocfs_counter_add(sbi->ll_stats, op, count); + else if (sbi->ll_stats_track_type == STATS_TRACK_GID && + sbi->ll_stats_track_id == + from_kgid(&init_user_ns, current_gid())) + lprocfs_counter_add(sbi->ll_stats, op, count); +} +EXPORT_SYMBOL(ll_stats_ops_tally); + +static const char *ra_stat_string[] = { + [RA_STAT_HIT] = "hits", + [RA_STAT_MISS] = "misses", + [RA_STAT_DISTANT_READPAGE] = "readpage not consecutive", + [RA_STAT_MISS_IN_WINDOW] = "miss inside window", + [RA_STAT_FAILED_GRAB_PAGE] = "failed grab_cache_page", + [RA_STAT_FAILED_MATCH] = "failed lock match", + [RA_STAT_DISCARDED] = "read but discarded", + [RA_STAT_ZERO_LEN] = "zero length file", + [RA_STAT_ZERO_WINDOW] = "zero size window", + [RA_STAT_EOF] = "read-ahead to EOF", + [RA_STAT_MAX_IN_FLIGHT] = "hit max r-a issue", + [RA_STAT_WRONG_GRAB_PAGE] = "wrong page from grab_cache_page", + [RA_STAT_FAILED_REACH_END] = "failed to reach end" }; +LPROC_SEQ_FOPS_RO_TYPE(llite, name); +LPROC_SEQ_FOPS_RO_TYPE(llite, uuid); + int lprocfs_register_mountpoint(struct proc_dir_entry *parent, struct super_block *sb, char *osc, char *mdc) { - struct lprocfs_vars lvars[2]; - struct ll_sb_info *sbi = ll_s2sbi(sb); - struct obd_device *obd; - char name[MAX_STRING_SIZE + 1]; - int err, id; - struct lprocfs_stats *svc_stats = NULL; - struct proc_dir_entry *entry; - ENTRY; - - memset(lvars, 0, sizeof(lvars)); - - name[MAX_STRING_SIZE] = '\0'; - lvars[0].name = name; - - LASSERT(sbi != NULL); - LASSERT(mdc != NULL); - LASSERT(osc != NULL); - - /* Mount info */ - snprintf(name, MAX_STRING_SIZE, "fs%llu", mnt_instance); - - mnt_instance++; - sbi->ll_proc_root = lprocfs_register(name, parent, NULL, NULL); - if (IS_ERR(sbi->ll_proc_root)) { - err = PTR_ERR(sbi->ll_proc_root); - sbi->ll_proc_root = NULL; - RETURN(err); - } + struct lprocfs_seq_vars lvars[2]; + struct lustre_sb_info *lsi = s2lsi(sb); + struct ll_sb_info *sbi = ll_s2sbi(sb); + struct obd_device *obd; + struct proc_dir_entry *dir; + char name[MAX_STRING_SIZE + 1], *ptr; + int err, id, len, rc; + ENTRY; + + memset(lvars, 0, sizeof(lvars)); + + name[MAX_STRING_SIZE] = '\0'; + lvars[0].name = name; + + LASSERT(sbi != NULL); + LASSERT(mdc != NULL); + LASSERT(osc != NULL); + + /* Get fsname */ + len = strlen(lsi->lsi_lmd->lmd_profile); + ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-'); + if (ptr && (strcmp(ptr, "-client") == 0)) + len -= 7; + + /* Mount info */ + snprintf(name, MAX_STRING_SIZE, "%.*s-%p", len, + lsi->lsi_lmd->lmd_profile, sb); + + sbi->ll_proc_root = lprocfs_seq_register(name, parent, NULL, NULL); + if (IS_ERR(sbi->ll_proc_root)) { + err = PTR_ERR(sbi->ll_proc_root); + sbi->ll_proc_root = NULL; + RETURN(err); + } + + rc = lprocfs_seq_create(sbi->ll_proc_root, "dump_page_cache", 0444, + &vvp_dump_pgcache_file_ops, sbi); + if (rc) + CWARN("Error adding the dump_page_cache file\n"); + + rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats", 0644, + &ll_rw_extents_stats_fops, sbi); + if (rc) + CWARN("Error adding the extent_stats file\n"); - entry = create_proc_entry("dump_page_cache", 0444, sbi->ll_proc_root); - if (entry == NULL) - GOTO(out, err = -ENOMEM); - entry->proc_fops = &llite_dump_pgcache_fops; - entry->data = sbi; + rc = lprocfs_seq_create(sbi->ll_proc_root, "extents_stats_per_process", + 0644, &ll_rw_extents_stats_pp_fops, sbi); + if (rc) + CWARN("Error adding the extents_stats_per_process file\n"); - svc_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES); - if (svc_stats == NULL) { - err = -ENOMEM; - goto out; - } + rc = lprocfs_seq_create(sbi->ll_proc_root, "offset_stats", 0644, + &ll_rw_offset_stats_fops, sbi); + if (rc) + CWARN("Error adding the offset_stats file\n"); + + /* File operations stats */ + sbi->ll_stats = lprocfs_alloc_stats(LPROC_LL_FILE_OPCODES, + LPROCFS_STATS_FLAG_NONE); + if (sbi->ll_stats == NULL) + GOTO(out, err = -ENOMEM); /* do counter init */ for (id = 0; id < LPROC_LL_FILE_OPCODES; id++) { __u32 type = llite_opcode_table[id].type; void *ptr = NULL; if (type & LPROCFS_TYPE_REGS) ptr = "regs"; - else { - if (type & LPROCFS_TYPE_BYTES) - ptr = "bytes"; - else { - if (type & LPROCFS_TYPE_PAGES) - ptr = "pages"; - } - } - lprocfs_counter_init(svc_stats, llite_opcode_table[id].opcode, + else if (type & LPROCFS_TYPE_BYTES) + ptr = "bytes"; + else if (type & LPROCFS_TYPE_PAGES) + ptr = "pages"; + lprocfs_counter_init(sbi->ll_stats, + llite_opcode_table[id].opcode, (type & LPROCFS_CNTR_AVGMINMAX), llite_opcode_table[id].opname, ptr); } - err = lprocfs_register_stats(sbi->ll_proc_root, "stats", svc_stats); + err = lprocfs_register_stats(sbi->ll_proc_root, "stats", sbi->ll_stats); if (err) - goto out; - else - sbi->ll_stats = svc_stats; - /* need place to keep svc_stats */ + GOTO(out, err); - /* Static configuration info */ - err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_obd_vars, sb); + sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string), + LPROCFS_STATS_FLAG_NONE); + if (sbi->ll_ra_stats == NULL) + GOTO(out, err = -ENOMEM); + + for (id = 0; id < ARRAY_SIZE(ra_stat_string); id++) + lprocfs_counter_init(sbi->ll_ra_stats, id, 0, + ra_stat_string[id], "pages"); + err = lprocfs_register_stats(sbi->ll_proc_root, "read_ahead_stats", + sbi->ll_ra_stats); if (err) - goto out; + GOTO(out, err); - /* MDC info */ - obd = class_name2obd(mdc); - LASSERT(obd != NULL); - LASSERT(obd->obd_type != NULL); - LASSERT(obd->obd_type->typ_name != NULL); + err = lprocfs_seq_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb); + if (err) + GOTO(out, err); - snprintf(name, MAX_STRING_SIZE, "%s/common_name", - obd->obd_type->typ_name); - lvars[0].read_fptr = lprocfs_rd_name; - err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd); - if (err) - goto out; + /* MDC info */ + obd = class_name2obd(mdc); - snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name); - lvars[0].read_fptr = lprocfs_rd_uuid; - err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd); - if (err) - goto out; + LASSERT(obd != NULL); + LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC); + LASSERT(obd->obd_type->typ_name != NULL); - /* OSC */ - obd = class_name2obd(osc); + dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root); + if (dir == NULL) + GOTO(out, err = -ENOMEM); - LASSERT(obd != NULL); - LASSERT(obd->obd_type != NULL); - LASSERT(obd->obd_type->typ_name != NULL); + snprintf(name, MAX_STRING_SIZE, "common_name"); + lvars[0].fops = &llite_name_fops; + err = lprocfs_seq_add_vars(dir, lvars, obd); + if (err) + GOTO(out, err); - snprintf(name, MAX_STRING_SIZE, "%s/common_name", - obd->obd_type->typ_name); - lvars[0].read_fptr = lprocfs_rd_name; - err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd); - if (err) - goto out; + snprintf(name, MAX_STRING_SIZE, "uuid"); + lvars[0].fops = &llite_uuid_fops; + err = lprocfs_seq_add_vars(dir, lvars, obd); + if (err) + GOTO(out, err); + + /* OSC */ + obd = class_name2obd(osc); + + LASSERT(obd != NULL); + LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC); + LASSERT(obd->obd_type->typ_name != NULL); - snprintf(name, MAX_STRING_SIZE, "%s/uuid", obd->obd_type->typ_name); - lvars[0].read_fptr = lprocfs_rd_uuid; - err = lprocfs_add_vars(sbi->ll_proc_root, lvars, obd); + dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root); + if (dir == NULL) + GOTO(out, err = -ENOMEM); + + snprintf(name, MAX_STRING_SIZE, "common_name"); + lvars[0].fops = &llite_name_fops; + err = lprocfs_seq_add_vars(dir, lvars, obd); + if (err) + GOTO(out, err); + + snprintf(name, MAX_STRING_SIZE, "uuid"); + lvars[0].fops = &llite_uuid_fops; + err = lprocfs_seq_add_vars(dir, lvars, obd); out: - if (err) { - if (svc_stats) - lprocfs_free_stats(svc_stats); - if (sbi->ll_proc_root) - lprocfs_remove(sbi->ll_proc_root); - } - RETURN(err); + if (err) { + lprocfs_remove(&sbi->ll_proc_root); + lprocfs_free_stats(&sbi->ll_ra_stats); + lprocfs_free_stats(&sbi->ll_stats); + } + RETURN(err); } void lprocfs_unregister_mountpoint(struct ll_sb_info *sbi) { if (sbi->ll_proc_root) { - struct proc_dir_entry *file_stats = - lprocfs_srch(sbi->ll_proc_root, "stats"); - - if (file_stats) { - lprocfs_free_stats(sbi->ll_stats); - lprocfs_remove(file_stats); - } + lprocfs_remove(&sbi->ll_proc_root); + lprocfs_free_stats(&sbi->ll_ra_stats); + lprocfs_free_stats(&sbi->ll_stats); } } #undef MAX_STRING_SIZE -static struct ll_async_page *llite_pglist_next_llap(struct ll_sb_info *sbi, - struct list_head *list) -{ - struct ll_async_page *llap; - struct list_head *pos; +#define pct(a,b) (b ? a * 100 / b : 0) - list_for_each(pos, list) { - if (pos == &sbi->ll_pglist) - return NULL; - llap = list_entry(pos, struct ll_async_page, llap_proc_item); - if (llap->llap_page == NULL) - continue; - return llap; - } - LBUG(); - return NULL; -} - -#define seq_page_flag(seq, page, flag, has_flags) do { \ - if (test_bit(PG_##flag, &(page)->flags)) { \ - if (!has_flags) \ - has_flags = 1; \ - else \ - seq_putc(seq, '|'); \ - seq_puts(seq, #flag); \ - } \ - } while(0); - -static int llite_dump_pgcache_seq_show(struct seq_file *seq, void *v) -{ - struct ll_async_page *llap, *dummy_llap = seq->private; - struct ll_sb_info *sbi = dummy_llap->llap_cookie; - - /* 2.4 doesn't seem to have SEQ_START_TOKEN, so we implement - * it in our own state */ - if (dummy_llap->llap_magic == 0) { - seq_printf(seq, "generation | llap .cookie | page "); - seq_printf(seq, "inode .index [ page flags ]\n"); - return 0; +static void ll_display_extents_info(struct ll_rw_extents_info *io_extents, + struct seq_file *seq, int which) +{ + unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum; + unsigned long start, end, r, w; + char *unitp = "KMGTPEZY"; + int i, units = 10; + struct per_process_info *pp_info = &io_extents->pp_extents[which]; + + read_cum = 0; + write_cum = 0; + start = 0; + + for(i = 0; i < LL_HIST_MAX; i++) { + read_tot += pp_info->pp_r_hist.oh_buckets[i]; + write_tot += pp_info->pp_w_hist.oh_buckets[i]; } - spin_lock(&sbi->ll_lock); - - llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item); - if (llap != NULL) { - int has_flags = 0; - struct page *page = llap->llap_page; - - seq_printf(seq, "%lu | %p %p | %p %p %lu [", - sbi->ll_pglist_gen, - llap, llap->llap_cookie, - page, page->mapping->host, page->index); - seq_page_flag(seq, page, locked, has_flags); - seq_page_flag(seq, page, error, has_flags); - seq_page_flag(seq, page, referenced, has_flags); - seq_page_flag(seq, page, uptodate, has_flags); - seq_page_flag(seq, page, dirty, has_flags); - seq_page_flag(seq, page, highmem, has_flags); - if (!has_flags) - seq_puts(seq, "-]\n"); - else - seq_puts(seq, "]\n"); + for(i = 0; i < LL_HIST_MAX; i++) { + r = pp_info->pp_r_hist.oh_buckets[i]; + w = pp_info->pp_w_hist.oh_buckets[i]; + read_cum += r; + write_cum += w; + end = 1 << (i + LL_HIST_START - units); + seq_printf(seq, "%4lu%c - %4lu%c%c: %14lu %4lu %4lu | " + "%14lu %4lu %4lu\n", start, *unitp, end, *unitp, + (i == LL_HIST_MAX - 1) ? '+' : ' ', + r, pct(r, read_tot), pct(read_cum, read_tot), + w, pct(w, write_tot), pct(write_cum, write_tot)); + start = end; + if (start == 1<<10) { + start = 1; + units += 10; + unitp++; + } + if (read_cum == read_tot && write_cum == write_tot) + break; } - - spin_unlock(&sbi->ll_lock); - - return 0; } -static void *llite_dump_pgcache_seq_start(struct seq_file *seq, loff_t *pos) +static int ll_rw_extents_stats_pp_seq_show(struct seq_file *seq, void *v) { - struct ll_async_page *llap = seq->private; + struct timeval now; + struct ll_sb_info *sbi = seq->private; + struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; + int k; - if (llap->llap_magic == 2) - return NULL; + do_gettimeofday(&now); - return (void *)1; + if (!sbi->ll_rw_stats_on) { + seq_printf(seq, "disabled\n" + "write anything in this file to activate, " + "then 0 or \"[D/d]isabled\" to deactivate\n"); + return 0; + } + seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n", + now.tv_sec, now.tv_usec); + seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write"); + seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n", + "extents", "calls", "%", "cum%", + "calls", "%", "cum%"); + spin_lock(&sbi->ll_pp_extent_lock); + for (k = 0; k < LL_PROCESS_HIST_MAX; k++) { + if (io_extents->pp_extents[k].pid != 0) { + seq_printf(seq, "\nPID: %d\n", + io_extents->pp_extents[k].pid); + ll_display_extents_info(io_extents, seq, k); + } + } + spin_unlock(&sbi->ll_pp_extent_lock); + return 0; } -static void *llite_dump_pgcache_seq_next(struct seq_file *seq, void *v, - loff_t *pos) +static ssize_t ll_rw_extents_stats_pp_seq_write(struct file *file, + const char __user *buf, + size_t len, + loff_t *off) { - struct ll_async_page *llap, *dummy_llap = seq->private; - struct ll_sb_info *sbi = dummy_llap->llap_cookie; + struct seq_file *seq = file->private_data; + struct ll_sb_info *sbi = seq->private; + struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; + int i; + int value = 1, rc = 0; + + if (len == 0) + return -EINVAL; + + rc = lprocfs_write_helper(buf, len, &value); + if (rc < 0 && len < 16) { + char kernbuf[16]; + + if (copy_from_user(kernbuf, buf, len)) + return -EFAULT; + kernbuf[len] = 0; + + if (kernbuf[len - 1] == '\n') + kernbuf[len - 1] = 0; + + if (strcmp(kernbuf, "disabled") == 0 || + strcmp(kernbuf, "Disabled") == 0) + value = 0; + } + + if (value == 0) + sbi->ll_rw_stats_on = 0; + else + sbi->ll_rw_stats_on = 1; + + spin_lock(&sbi->ll_pp_extent_lock); + for (i = 0; i < LL_PROCESS_HIST_MAX; i++) { + io_extents->pp_extents[i].pid = 0; + lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist); + lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist); + } + spin_unlock(&sbi->ll_pp_extent_lock); + return len; +} - /* bail if we just displayed the banner */ - if (dummy_llap->llap_magic == 0) { - dummy_llap->llap_magic = 1; - return dummy_llap; - } +LPROC_SEQ_FOPS(ll_rw_extents_stats_pp); - /* we've just displayed the llap that is after us in the list. - * we advance to a position beyond it, returning null if there - * isn't another llap in the list beyond that new position. */ - spin_lock(&sbi->ll_lock); - llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item); - list_del_init(&dummy_llap->llap_proc_item); - if (llap) { - list_add(&dummy_llap->llap_proc_item, &llap->llap_proc_item); - llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item); - } - spin_unlock(&sbi->ll_lock); +static int ll_rw_extents_stats_seq_show(struct seq_file *seq, void *v) +{ + struct timeval now; + struct ll_sb_info *sbi = seq->private; + struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; - ++*pos; - if (llap == NULL) { - dummy_llap->llap_magic = 2; - return NULL; + do_gettimeofday(&now); + + if (!sbi->ll_rw_stats_on) { + seq_printf(seq, "disabled\n" + "write anything in this file to activate, " + "then 0 or \"[D/d]isabled\" to deactivate\n"); + return 0; } - return dummy_llap; + seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n", + now.tv_sec, now.tv_usec); + + seq_printf(seq, "%15s %19s | %20s\n", " ", "read", "write"); + seq_printf(seq, "%13s %14s %4s %4s | %14s %4s %4s\n", + "extents", "calls", "%", "cum%", + "calls", "%", "cum%"); + spin_lock(&sbi->ll_lock); + ll_display_extents_info(io_extents, seq, LL_PROCESS_HIST_MAX); + spin_unlock(&sbi->ll_lock); + + return 0; } -static void llite_dump_pgcache_seq_stop(struct seq_file *seq, void *v) +static ssize_t ll_rw_extents_stats_seq_write(struct file *file, + const char __user *buf, + size_t len, loff_t *off) { + struct seq_file *seq = file->private_data; + struct ll_sb_info *sbi = seq->private; + struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; + int i; + int value = 1, rc = 0; + + if (len == 0) + return -EINVAL; + + rc = lprocfs_write_helper(buf, len, &value); + if (rc < 0 && len < 16) { + char kernbuf[16]; + + if (copy_from_user(kernbuf, buf, len)) + return -EFAULT; + kernbuf[len] = 0; + + if (kernbuf[len - 1] == '\n') + kernbuf[len - 1] = 0; + + if (strcmp(kernbuf, "disabled") == 0 || + strcmp(kernbuf, "Disabled") == 0) + value = 0; + } + + if (value == 0) + sbi->ll_rw_stats_on = 0; + else + sbi->ll_rw_stats_on = 1; + + spin_lock(&sbi->ll_pp_extent_lock); + for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) { + io_extents->pp_extents[i].pid = 0; + lprocfs_oh_clear(&io_extents->pp_extents[i].pp_r_hist); + lprocfs_oh_clear(&io_extents->pp_extents[i].pp_w_hist); + } + spin_unlock(&sbi->ll_pp_extent_lock); + + return len; } +LPROC_SEQ_FOPS(ll_rw_extents_stats); -struct seq_operations llite_dump_pgcache_seq_sops = { - .start = llite_dump_pgcache_seq_start, - .stop = llite_dump_pgcache_seq_stop, - .next = llite_dump_pgcache_seq_next, - .show = llite_dump_pgcache_seq_show, -}; - -/* we're displaying llaps in a list_head list. we don't want to hold a lock - * while we walk the entire list, and we don't want to have to seek into - * the right position in the list as an app advances with many syscalls. we - * allocate a dummy llap and hang it off file->private. its position in - * the list records where the app is currently displaying. this way our - * seq .start and .stop don't actually do anything. .next returns null - * when the dummy hits the end of the list which eventually leads to .release - * where we tear down. this kind of displaying is super-racey, so we put - * a generation counter on the list so the output shows when the list - * changes between reads. - */ -static int llite_dump_pgcache_seq_open(struct inode *inode, struct file *file) -{ - struct proc_dir_entry *dp = PDE(inode); - struct ll_async_page *llap; - struct seq_file *seq; - struct ll_sb_info *sbi = dp->data; - int rc; - - OBD_ALLOC_GFP(llap, sizeof(*llap), GFP_KERNEL); - if (llap == NULL) - return -ENOMEM; - llap->llap_page = NULL; - llap->llap_cookie = sbi; - llap->llap_magic = 0; - - rc = seq_open(file, &llite_dump_pgcache_seq_sops); - if (rc) { - OBD_FREE(llap, sizeof(*llap)); - return rc; +void ll_rw_stats_tally(struct ll_sb_info *sbi, pid_t pid, + struct ll_file_data *file, loff_t pos, + size_t count, int rw) +{ + int i, cur = -1; + struct ll_rw_process_info *process; + struct ll_rw_process_info *offset; + int *off_count = &sbi->ll_rw_offset_entry_count; + int *process_count = &sbi->ll_offset_process_count; + struct ll_rw_extents_info *io_extents = &sbi->ll_rw_extents_info; + + if(!sbi->ll_rw_stats_on) + return; + process = sbi->ll_rw_process_info; + offset = sbi->ll_rw_offset_info; + + spin_lock(&sbi->ll_pp_extent_lock); + /* Extent statistics */ + for(i = 0; i < LL_PROCESS_HIST_MAX; i++) { + if(io_extents->pp_extents[i].pid == pid) { + cur = i; + break; + } } - seq = file->private_data; - seq->private = llap; - spin_lock(&sbi->ll_lock); - list_add(&llap->llap_proc_item, &sbi->ll_pglist); - spin_unlock(&sbi->ll_lock); + if (cur == -1) { + /* new process */ + sbi->ll_extent_process_count = + (sbi->ll_extent_process_count + 1) % LL_PROCESS_HIST_MAX; + cur = sbi->ll_extent_process_count; + io_extents->pp_extents[cur].pid = pid; + lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_r_hist); + lprocfs_oh_clear(&io_extents->pp_extents[cur].pp_w_hist); + } - return 0; + for(i = 0; (count >= (1 << LL_HIST_START << i)) && + (i < (LL_HIST_MAX - 1)); i++); + if (rw == 0) { + io_extents->pp_extents[cur].pp_r_hist.oh_buckets[i]++; + io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_r_hist.oh_buckets[i]++; + } else { + io_extents->pp_extents[cur].pp_w_hist.oh_buckets[i]++; + io_extents->pp_extents[LL_PROCESS_HIST_MAX].pp_w_hist.oh_buckets[i]++; + } + spin_unlock(&sbi->ll_pp_extent_lock); + + spin_lock(&sbi->ll_process_lock); + /* Offset statistics */ + for (i = 0; i < LL_PROCESS_HIST_MAX; i++) { + if (process[i].rw_pid == pid) { + if (process[i].rw_last_file != file) { + process[i].rw_range_start = pos; + process[i].rw_last_file_pos = pos + count; + process[i].rw_smallest_extent = count; + process[i].rw_largest_extent = count; + process[i].rw_offset = 0; + process[i].rw_last_file = file; + spin_unlock(&sbi->ll_process_lock); + return; + } + if (process[i].rw_last_file_pos != pos) { + *off_count = + (*off_count + 1) % LL_OFFSET_HIST_MAX; + offset[*off_count].rw_op = process[i].rw_op; + offset[*off_count].rw_pid = pid; + offset[*off_count].rw_range_start = + process[i].rw_range_start; + offset[*off_count].rw_range_end = + process[i].rw_last_file_pos; + offset[*off_count].rw_smallest_extent = + process[i].rw_smallest_extent; + offset[*off_count].rw_largest_extent = + process[i].rw_largest_extent; + offset[*off_count].rw_offset = + process[i].rw_offset; + process[i].rw_op = rw; + process[i].rw_range_start = pos; + process[i].rw_smallest_extent = count; + process[i].rw_largest_extent = count; + process[i].rw_offset = pos - + process[i].rw_last_file_pos; + } + if(process[i].rw_smallest_extent > count) + process[i].rw_smallest_extent = count; + if(process[i].rw_largest_extent < count) + process[i].rw_largest_extent = count; + process[i].rw_last_file_pos = pos + count; + spin_unlock(&sbi->ll_process_lock); + return; + } + } + *process_count = (*process_count + 1) % LL_PROCESS_HIST_MAX; + process[*process_count].rw_pid = pid; + process[*process_count].rw_op = rw; + process[*process_count].rw_range_start = pos; + process[*process_count].rw_last_file_pos = pos + count; + process[*process_count].rw_smallest_extent = count; + process[*process_count].rw_largest_extent = count; + process[*process_count].rw_offset = 0; + process[*process_count].rw_last_file = file; + spin_unlock(&sbi->ll_process_lock); } -static int llite_dump_pgcache_seq_release(struct inode *inode, - struct file *file) +static int ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v) { - struct seq_file *seq = file->private_data; - struct ll_async_page *llap = seq->private; - struct ll_sb_info *sbi = llap->llap_cookie; - - spin_lock(&sbi->ll_lock); - if (!list_empty(&llap->llap_proc_item)) - list_del_init(&llap->llap_proc_item); - spin_unlock(&sbi->ll_lock); - OBD_FREE(llap, sizeof(*llap)); - - return seq_release(inode, file); + struct timeval now; + struct ll_sb_info *sbi = seq->private; + struct ll_rw_process_info *offset = sbi->ll_rw_offset_info; + struct ll_rw_process_info *process = sbi->ll_rw_process_info; + int i; + + do_gettimeofday(&now); + + if (!sbi->ll_rw_stats_on) { + seq_printf(seq, "disabled\n" + "write anything in this file to activate, " + "then 0 or \"[D/d]isabled\" to deactivate\n"); + return 0; + } + spin_lock(&sbi->ll_process_lock); + + seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n", + now.tv_sec, now.tv_usec); + seq_printf(seq, "%3s %10s %14s %14s %17s %17s %14s\n", + "R/W", "PID", "RANGE START", "RANGE END", + "SMALLEST EXTENT", "LARGEST EXTENT", "OFFSET"); + + /* We stored the discontiguous offsets here; print them first */ + for (i = 0; i < LL_OFFSET_HIST_MAX; i++) { + if (offset[i].rw_pid != 0) + seq_printf(seq, + "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu", + offset[i].rw_op == READ ? 'R' : 'W', + offset[i].rw_pid, + offset[i].rw_range_start, + offset[i].rw_range_end, + (unsigned long)offset[i].rw_smallest_extent, + (unsigned long)offset[i].rw_largest_extent, + offset[i].rw_offset); + } + + /* Then print the current offsets for each process */ + for (i = 0; i < LL_PROCESS_HIST_MAX; i++) { + if (process[i].rw_pid != 0) + seq_printf(seq, + "%3c %10d %14Lu %14Lu %17lu %17lu %14Lu", + process[i].rw_op == READ ? 'R' : 'W', + process[i].rw_pid, + process[i].rw_range_start, + process[i].rw_last_file_pos, + (unsigned long)process[i].rw_smallest_extent, + (unsigned long)process[i].rw_largest_extent, + process[i].rw_offset); + } + spin_unlock(&sbi->ll_process_lock); + + return 0; } -struct file_operations llite_dump_pgcache_fops = { - .owner = THIS_MODULE, - .open = llite_dump_pgcache_seq_open, - .read = seq_read, - .release = llite_dump_pgcache_seq_release, -}; +static ssize_t ll_rw_offset_stats_seq_write(struct file *file, + const char __user *buf, + size_t len, loff_t *off) +{ + struct seq_file *seq = file->private_data; + struct ll_sb_info *sbi = seq->private; + struct ll_rw_process_info *process_info = sbi->ll_rw_process_info; + struct ll_rw_process_info *offset_info = sbi->ll_rw_offset_info; + int value = 1, rc = 0; + + if (len == 0) + return -EINVAL; + + rc = lprocfs_write_helper(buf, len, &value); + + if (rc < 0 && len < 16) { + char kernbuf[16]; + + if (copy_from_user(kernbuf, buf, len)) + return -EFAULT; + kernbuf[len] = 0; + + if (kernbuf[len - 1] == '\n') + kernbuf[len - 1] = 0; + + if (strcmp(kernbuf, "disabled") == 0 || + strcmp(kernbuf, "Disabled") == 0) + value = 0; + } + + if (value == 0) + sbi->ll_rw_stats_on = 0; + else + sbi->ll_rw_stats_on = 1; + + spin_lock(&sbi->ll_process_lock); + sbi->ll_offset_process_count = 0; + sbi->ll_rw_offset_entry_count = 0; + memset(process_info, 0, sizeof(struct ll_rw_process_info) * + LL_PROCESS_HIST_MAX); + memset(offset_info, 0, sizeof(struct ll_rw_process_info) * + LL_OFFSET_HIST_MAX); + spin_unlock(&sbi->ll_process_lock); + + return len; +} +LPROC_SEQ_FOPS(ll_rw_offset_stats); #endif /* LPROCFS */