--- /dev/null
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * 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.
+ *
+ * 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).
+ *
+ * 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
+ *
+ * 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) 2011, 2012, 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/lustre_lite.h"
+#include "../include/lprocfs_status.h"
+#include <linux/seq_file.h>
+#include "../include/obd_support.h"
+
+#include "llite_internal.h"
+#include "vvp_internal.h"
+
+/* /proc/lustre/llite mount point registration */
+static struct file_operations ll_rw_extents_stats_fops;
+static struct file_operations ll_rw_extents_stats_pp_fops;
+static struct file_operations ll_rw_offset_stats_fops;
+
+static int ll_blksize_seq_show(struct seq_file *m, void *v)
+{
+ struct super_block *sb = (struct super_block *)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)
+ seq_printf(m, "%u\n", osfs.os_bsize);
+
+ return rc;
+}
+LPROC_SEQ_FOPS_RO(ll_blksize);
+
+static int ll_kbytestotal_seq_show(struct seq_file *m, void *v)
+{
+ struct super_block *sb = (struct super_block *)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;
+
+ seq_printf(m, "%llu\n", result);
+ }
+
+ return rc;
+}
+LPROC_SEQ_FOPS_RO(ll_kbytestotal);
+
+static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
+{
+ struct super_block *sb = (struct super_block *)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;
+
+ seq_printf(m, "%llu\n", result);
+ }
+
+ return rc;
+}
+LPROC_SEQ_FOPS_RO(ll_kbytesfree);
+
+static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
+{
+ struct super_block *sb = (struct super_block *)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;
+
+ seq_printf(m, "%llu\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 = (struct super_block *)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)
+ seq_printf(m, "%llu\n", osfs.os_files);
+
+ return rc;
+}
+LPROC_SEQ_FOPS_RO(ll_filestotal);
+
+static int ll_filesfree_seq_show(struct seq_file *m, void *v)
+{
+ struct super_block *sb = (struct super_block *)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)
+ seq_printf(m, "%llu\n", osfs.os_ffree);
+
+ return rc;
+}
+LPROC_SEQ_FOPS_RO(ll_filesfree);
+
+static int ll_client_type_seq_show(struct seq_file *m, void *v)
+{
+ struct ll_sb_info *sbi = ll_s2sbi((struct super_block *)m->private);
+
+ LASSERT(sbi != NULL);
+
+ if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
+ seq_puts(m, "remote client\n");
+ else
+ seq_puts(m, "local client\n");
+
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(ll_client_type);
+
+static int ll_fstype_seq_show(struct seq_file *m, void *v)
+{
+ struct super_block *sb = (struct super_block *)m->private;
+
+ LASSERT(sb != NULL);
+ seq_printf(m, "%s\n", sb->s_type->name);
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(ll_fstype);
+
+static int ll_sb_uuid_seq_show(struct seq_file *m, void *v)
+{
+ struct super_block *sb = (struct super_block *)m->private;
+
+ LASSERT(sb != NULL);
+ seq_printf(m, "%s\n", ll_s2sbi(sb)->ll_sb_uuid.uuid);
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(ll_sb_uuid);
+
+static int ll_site_stats_seq_show(struct seq_file *m, void *v)
+{
+ struct super_block *sb = m->private;
+
+ /*
+ * 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_max_readahead_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;
+ 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_mb_seq_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct super_block *sb = ((struct seq_file *)file->private_data)->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ 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 > totalram_pages / 2) {
+ CERROR("can't set file readahead more than %lu MB\n",
+ totalram_pages >> (20 - PAGE_CACHE_SHIFT + 1)); /*1/2 of RAM*/
+ 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);
+
+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 super_block *sb = ((struct seq_file *)file->private_data)->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ 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_max_read_ahead_whole_mb_seq_show(struct seq_file *m, void *unused)
+{
+ 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_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 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 seq_file *)file->private_data)->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ 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;
+ int max_cached_mb;
+ int unused_mb;
+
+ max_cached_mb = cache->ccc_lru_max >> shift;
+ unused_mb = atomic_read(&cache->ccc_lru_left) >> shift;
+ seq_printf(m,
+ "users: %d\n"
+ "max_cached_mb: %d\n"
+ "used_mb: %d\n"
+ "unused_mb: %d\n"
+ "reclaim_count: %u\n",
+ atomic_read(&cache->ccc_users),
+ max_cached_mb,
+ max_cached_mb - unused_mb,
+ unused_mb,
+ cache->ccc_lru_shrinkers);
+ return 0;
+}
+
+static ssize_t ll_max_cached_mb_seq_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct super_block *sb = ((struct seq_file *)file->private_data)->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ struct cl_client_cache *cache = &sbi->ll_cache;
+ int mult, rc, pages_number;
+ int diff = 0;
+ int nrpages = 0;
+ char kernbuf[128];
+
+ 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_helper(buffer, count, &pages_number, mult);
+ if (rc)
+ return rc;
+
+ 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;
+ }
+
+ 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_add(diff, &cache->ccc_lru_left);
+ rc = 0;
+ goto out;
+ }
+
+ diff = -diff;
+ while (diff > 0) {
+ int tmp;
+
+ /* reduce LRU budget from free slots. */
+ do {
+ int ov, nv;
+
+ ov = atomic_read(&cache->ccc_lru_left);
+ if (ov == 0)
+ break;
+
+ nv = ov > diff ? ov - diff : 0;
+ rc = atomic_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(NULL, sbi->ll_dt_exp,
+ sizeof(KEY_CACHE_LRU_SHRINK),
+ KEY_CACHE_LRU_SHRINK,
+ sizeof(tmp), &tmp, NULL);
+ if (rc < 0)
+ break;
+ }
+
+out:
+ if (rc >= 0) {
+ spin_lock(&sbi->ll_lock);
+ cache->ccc_lru_max = pages_number;
+ spin_unlock(&sbi->ll_lock);
+ rc = count;
+ } else {
+ atomic_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);
+
+ seq_printf(m, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
+ return 0;
+}
+
+static ssize_t ll_checksum_seq_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct super_block *sb = ((struct seq_file *)file->private_data)->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ int val, 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;
+
+ seq_printf(m, "%lu\n", ll_s2sbi(sb)->ll_max_rw_chunk);
+ return 0;
+}
+
+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 seq_file *)file->private_data)->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)
+ seq_printf(m, "%d\n", ll_s2sbi(sb)->ll_stats_track_id);
+ else if (ll_s2sbi(sb)->ll_stats_track_type == STATS_TRACK_ALL)
+ seq_puts(m, "0 (all)\n");
+ else
+ seq_puts(m, "untracked\n");
+
+ return 0;
+}
+
+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;
+
+ 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
+ ll_s2sbi(sb)->ll_stats_track_type = type;
+ lprocfs_clear_stats(ll_s2sbi(sb)->ll_stats);
+ 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 ssize_t ll_track_pid_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_PID);
+}
+LPROC_SEQ_FOPS(ll_track_pid);
+
+static int ll_track_ppid_seq_show(struct seq_file *m, void *v)
+{
+ return ll_rd_track_id(m, STATS_TRACK_PPID);
+}
+
+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_track_gid_seq_show(struct seq_file *m, void *v)
+{
+ 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);
+
+ seq_printf(m, "%u\n", sbi->ll_sa_max);
+ return 0;
+}
+
+static ssize_t ll_statahead_max_seq_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct super_block *sb = ((struct seq_file *)file->private_data)->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ int val, rc;
+
+ rc = lprocfs_write_helper(buffer, count, &val);
+ if (rc)
+ return rc;
+
+ 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);
+
+ 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);
+
+ seq_printf(m, "%u\n", sbi->ll_flags & LL_SBI_AGL_ENABLED ? 1 : 0);
+ return 0;
+}
+
+static ssize_t ll_statahead_agl_seq_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct super_block *sb = ((struct seq_file *)file->private_data)->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ 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);
+
+ 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));
+ return 0;
+}
+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);
+
+ seq_printf(m, "%u\n", sbi->ll_flags & LL_SBI_LAZYSTATFS ? 1 : 0);
+ return 0;
+}
+
+static ssize_t ll_lazystatfs_seq_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct super_block *sb = ((struct seq_file *)file->private_data)->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ 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;
+
+ seq_printf(m, "%u\n", ealen);
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(ll_max_easize);
+
+static int ll_default_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;
+
+ seq_printf(m, "%u\n", ealen);
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(ll_default_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;
+
+ seq_printf(m, "%u\n", cookielen);
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(ll_max_cookiesize);
+
+static int ll_default_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;
+
+ seq_printf(m, "%u\n", cookielen);
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(ll_default_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_xattr_cache_seq_show(struct seq_file *m, void *v)
+{
+ struct super_block *sb = m->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+
+ seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
+
+ return 0;
+}
+
+static ssize_t ll_xattr_cache_seq_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct seq_file *seq = file->private_data;
+ struct super_block *sb = seq->private;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ int val, rc;
+
+ rc = lprocfs_write_helper(buffer, count, &val);
+ if (rc)
+ return rc;
+
+ if (val != 0 && val != 1)
+ return -ERANGE;
+
+ 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 struct lprocfs_vars lprocfs_llite_obd_vars[] = {
+ { "uuid", &ll_sb_uuid_fops, NULL, 0 },
+ /* { "mntpt_path", ll_rd_path, 0, 0 }, */
+ { "fstype", &ll_fstype_fops, NULL, 0 },
+ { "site", &ll_site_stats_fops, NULL, 0 },
+ { "blocksize", &ll_blksize_fops, NULL, 0 },
+ { "kbytestotal", &ll_kbytestotal_fops, NULL, 0 },
+ { "kbytesfree", &ll_kbytesfree_fops, NULL, 0 },
+ { "kbytesavail", &ll_kbytesavail_fops, NULL, 0 },
+ { "filestotal", &ll_filestotal_fops, NULL, 0 },
+ { "filesfree", &ll_filesfree_fops, NULL, 0 },
+ { "client_type", &ll_client_type_fops, NULL, 0 },
+ /* { "filegroups", lprocfs_rd_filegroups, 0, 0 }, */
+ { "max_read_ahead_mb", &ll_max_readahead_mb_fops, NULL },
+ { "max_read_ahead_per_file_mb", &ll_max_readahead_per_file_mb_fops,
+ NULL },
+ { "max_read_ahead_whole_mb", &ll_max_read_ahead_whole_mb_fops, NULL },
+ { "max_cached_mb", &ll_max_cached_mb_fops, NULL },
+ { "checksum_pages", &ll_checksum_fops, NULL },
+ { "max_rw_chunk", &ll_max_rw_chunk_fops, NULL },
+ { "stats_track_pid", &ll_track_pid_fops, NULL },
+ { "stats_track_ppid", &ll_track_ppid_fops, NULL },
+ { "stats_track_gid", &ll_track_gid_fops, NULL },
+ { "statahead_max", &ll_statahead_max_fops, NULL },
+ { "statahead_agl", &ll_statahead_agl_fops, NULL },
+ { "statahead_stats", &ll_statahead_stats_fops, NULL, 0 },
+ { "lazystatfs", &ll_lazystatfs_fops, NULL },
+ { "max_easize", &ll_max_easize_fops, NULL, 0 },
+ { "default_easize", &ll_default_easize_fops, NULL, 0 },
+ { "max_cookiesize", &ll_max_cookiesize_fops, NULL, 0 },
+ { "default_cookiesize", &ll_default_cookiesize_fops, NULL, 0 },
+ { "sbi_flags", &ll_sbi_flags_fops, NULL, 0 },
+ { "xattr_cache", &ll_xattr_cache_fops, NULL, 0 },
+ { NULL }
+};
+
+#define MAX_STRING_SIZE 128
+
+static const struct llite_file_opcode {
+ __u32 opcode;
+ __u32 type;
+ const char *opname;
+} llite_opcode_table[LPROC_LL_FILE_OPCODES] = {
+ /* file operation */
+ { LPROC_LL_DIRTY_HITS, LPROCFS_TYPE_REGS, "dirty_pages_hits" },
+ { LPROC_LL_DIRTY_MISSES, LPROCFS_TYPE_REGS, "dirty_pages_misses" },
+ { LPROC_LL_READ_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
+ "read_bytes" },
+ { LPROC_LL_WRITE_BYTES, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_BYTES,
+ "write_bytes" },
+ { LPROC_LL_BRW_READ, LPROCFS_CNTR_AVGMINMAX|LPROCFS_TYPE_PAGES,
+ "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, "truncate" },
+ { LPROC_LL_FLOCK, LPROCFS_TYPE_REGS, "flock" },
+ { LPROC_LL_GETATTR, LPROCFS_TYPE_REGS, "getattr" },
+ /* 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_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->real_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",
+};
+
+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 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;
+
+ 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_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");
+
+ 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");
+
+ 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) {
+ err = -ENOMEM;
+ goto out;
+ }
+ /* 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(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", sbi->ll_stats);
+ if (err)
+ goto out;
+
+ sbi->ll_ra_stats = lprocfs_alloc_stats(ARRAY_SIZE(ra_stat_string),
+ LPROCFS_STATS_FLAG_NONE);
+ if (sbi->ll_ra_stats == NULL) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ 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;
+
+
+ err = lprocfs_add_vars(sbi->ll_proc_root, lprocfs_llite_obd_vars, sb);
+ if (err)
+ goto out;
+
+ /* MDC info */
+ obd = class_name2obd(mdc);
+
+ LASSERT(obd != NULL);
+ LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
+ LASSERT(obd->obd_type->typ_name != NULL);
+
+ dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
+ if (dir == NULL) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ snprintf(name, MAX_STRING_SIZE, "common_name");
+ lvars[0].fops = &llite_name_fops;
+ err = lprocfs_add_vars(dir, lvars, obd);
+ if (err)
+ goto out;
+
+ snprintf(name, MAX_STRING_SIZE, "uuid");
+ lvars[0].fops = &llite_uuid_fops;
+ err = lprocfs_add_vars(dir, lvars, obd);
+ if (err)
+ goto out;
+
+ /* OSC */
+ obd = class_name2obd(osc);
+
+ LASSERT(obd != NULL);
+ LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
+ LASSERT(obd->obd_type->typ_name != NULL);
+
+ dir = proc_mkdir(obd->obd_type->typ_name, sbi->ll_proc_root);
+ if (dir == NULL) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ snprintf(name, MAX_STRING_SIZE, "common_name");
+ lvars[0].fops = &llite_name_fops;
+ err = lprocfs_add_vars(dir, lvars, obd);
+ if (err)
+ goto out;
+
+ snprintf(name, MAX_STRING_SIZE, "uuid");
+ lvars[0].fops = &llite_uuid_fops;
+ err = lprocfs_add_vars(dir, lvars, obd);
+out:
+ 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) {
+ lprocfs_remove(&sbi->ll_proc_root);
+ lprocfs_free_stats(&sbi->ll_ra_stats);
+ lprocfs_free_stats(&sbi->ll_stats);
+ }
+}
+#undef MAX_STRING_SIZE
+
+#define pct(a, b) (b ? a * 100 / b : 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];
+ }
+
+ 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;
+ }
+}
+
+static int ll_rw_extents_stats_pp_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;
+ int k;
+
+ 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;
+ }
+ seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
+ now.tv_sec, (unsigned long)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 ssize_t ll_rw_extents_stats_pp_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_pp);
+
+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;
+
+ 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;
+ }
+ seq_printf(seq, "snapshot_time: %lu.%lu (secs.usecs)\n",
+ now.tv_sec, (unsigned long)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 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);
+
+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;
+ }
+ }
+
+ 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);
+ }
+
+ 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 ll_rw_offset_stats_seq_show(struct seq_file *seq, void *v)
+{
+ 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, (unsigned long)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;
+}
+
+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);
+
+void lprocfs_llite_init_vars(struct lprocfs_static_vars *lvars)
+{
+ lvars->module_vars = NULL;
+ lvars->obd_vars = lprocfs_llite_obd_vars;
+}
Code Review / kvmfornfv.git / blobdiff