X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Ffld%2Flproc_fld.c;h=8c86abd636bd2e15b9cbb0f178ce9538b040f125;hb=28cedfae1e318b3f4783a6f145e24441b279646c;hp=b2e37fd0567426b5d602b3099369d32a7e4b93d8;hpb=6869932b552ac705f411de3362f01bd50c1f6f7d;p=fs%2Flustre-release.git diff --git a/lustre/fld/lproc_fld.c b/lustre/fld/lproc_fld.c index b2e37fd..8c86abd 100644 --- a/lustre/fld/lproc_fld.c +++ b/lustre/fld/lproc_fld.c @@ -1,6 +1,4 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: - * +/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. @@ -17,17 +15,15 @@ * * 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. + * http://www.gnu.org/licenses/gpl-2.0.html * * GPL HEADER END */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. + * + * Copyright (c) 2012, 2016, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -38,130 +34,325 @@ * FLD (FIDs Location Database) * * Author: Yury Umanets + * Di Wang */ -#ifndef EXPORT_SYMTAB -# define EXPORT_SYMTAB -#endif #define DEBUG_SUBSYSTEM S_FLD -#ifdef __KERNEL__ -# include -# include -#else /* __KERNEL__ */ -# include -#endif +#include +#include -#include -#include +#ifdef HAVE_SERVER_SUPPORT #include -#include +#endif #include -#include #include +#include #include "fld_internal.h" -#ifdef LPROCFS static int -fld_proc_read_targets(char *page, char **start, off_t off, - int count, int *eof, void *data) +fld_debugfs_targets_seq_show(struct seq_file *m, void *unused) { - struct lu_client_fld *fld = (struct lu_client_fld *)data; + struct lu_client_fld *fld = (struct lu_client_fld *)m->private; struct lu_fld_target *target; - int total = 0, rc; + ENTRY; + spin_lock(&fld->lcf_lock); + list_for_each_entry(target, &fld->lcf_targets, ft_chain) + seq_printf(m, "%s\n", fld_target_name(target)); + spin_unlock(&fld->lcf_lock); - LASSERT(fld != NULL); - - spin_lock(&fld->lcf_lock); - list_for_each_entry(target, - &fld->lcf_targets, ft_chain) - { - rc = snprintf(page, count, "%s\n", - fld_target_name(target)); - page += rc; - count -= rc; - total += rc; - if (count == 0) - break; - } - spin_unlock(&fld->lcf_lock); - RETURN(total); + RETURN(0); } static int -fld_proc_read_hash(char *page, char **start, off_t off, - int count, int *eof, void *data) +fld_debugfs_hash_seq_show(struct seq_file *m, void *unused) { - struct lu_client_fld *fld = (struct lu_client_fld *)data; - int rc; + struct lu_client_fld *fld = (struct lu_client_fld *)m->private; + ENTRY; + spin_lock(&fld->lcf_lock); + seq_printf(m, "%s\n", fld->lcf_hash->fh_name); + spin_unlock(&fld->lcf_lock); - LASSERT(fld != NULL); + RETURN(0); +} + +static ssize_t +fld_debugfs_hash_seq_write(struct file *file, const char __user *buffer, + size_t count, loff_t *off) +{ + struct seq_file *m = file->private_data; + struct lu_client_fld *fld = m->private; + struct lu_fld_hash *hash = NULL; + char fh_name[8]; + int i; + + if (count > sizeof(fh_name)) + return -ENAMETOOLONG; + + if (copy_from_user(fh_name, buffer, count) != 0) + return -EFAULT; - spin_lock(&fld->lcf_lock); - rc = snprintf(page, count, "%s\n", - fld->lcf_hash->fh_name); - spin_unlock(&fld->lcf_lock); + for (i = 0; fld_hash[i].fh_name; i++) { + if (count != strlen(fld_hash[i].fh_name)) + continue; - RETURN(rc); + if (!strncmp(fld_hash[i].fh_name, fh_name, count)) { + hash = &fld_hash[i]; + break; + } + } + + if (hash) { + spin_lock(&fld->lcf_lock); + fld->lcf_hash = hash; + spin_unlock(&fld->lcf_lock); + + CDEBUG(D_INFO, "%s: Changed hash to \"%s\"\n", + fld->lcf_name, hash->fh_name); + } + + return count; } -static int -fld_proc_write_hash(struct file *file, const char *buffer, - unsigned long count, void *data) +static ssize_t ldebugfs_cache_flush_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *pos) { - struct lu_client_fld *fld = (struct lu_client_fld *)data; - struct lu_fld_hash *hash = NULL; - int i; + struct seq_file *m = file->private_data; + struct lu_client_fld *fld = m->private; + ENTRY; + fld_cache_flush(fld->lcf_cache); - LASSERT(fld != NULL); + CDEBUG(D_INFO, "%s: Lookup cache is flushed\n", fld->lcf_name); - for (i = 0; fld_hash[i].fh_name != NULL; i++) { - if (count != strlen(fld_hash[i].fh_name)) - continue; + RETURN(count); +} - if (!strncmp(fld_hash[i].fh_name, buffer, count)) { - hash = &fld_hash[i]; - break; - } - } +LDEBUGFS_SEQ_FOPS_RO(fld_debugfs_targets); +LDEBUGFS_SEQ_FOPS(fld_debugfs_hash); +LDEBUGFS_FOPS_WR_ONLY(fld, cache_flush); - if (hash != NULL) { - spin_lock(&fld->lcf_lock); - fld->lcf_hash = hash; - spin_unlock(&fld->lcf_lock); +struct ldebugfs_vars fld_client_debugfs_list[] = { + { .name = "targets", + .fops = &fld_debugfs_targets_fops }, + { .name = "hash", + .fops = &fld_debugfs_hash_fops }, + { .name = "cache_flush", + .fops = &fld_cache_flush_fops }, + { NULL } +}; - CDEBUG(D_INFO, "%s: Changed hash to \"%s\"\n", - fld->lcf_name, hash->fh_name); - } - - RETURN(count); +#ifdef HAVE_SERVER_SUPPORT +struct fld_seq_param { + struct lu_env fsp_env; + struct dt_it *fsp_it; + struct lu_server_fld *fsp_fld; + unsigned int fsp_stop:1; +}; + +static void *fldb_seq_start(struct seq_file *p, loff_t *pos) +{ + struct fld_seq_param *param = p->private; + struct lu_server_fld *fld; + struct dt_object *obj; + const struct dt_it_ops *iops; + struct dt_key *key; + int rc; + + if (param == NULL || param->fsp_stop) + return NULL; + + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; + + rc = iops->load(¶m->fsp_env, param->fsp_it, *pos); + if (rc <= 0) + return NULL; + + key = iops->key(¶m->fsp_env, param->fsp_it); + if (IS_ERR(key)) + return NULL; + + *pos = be64_to_cpu(*(__u64 *)key); + + return param; } -static int -fld_proc_write_cache_flush(struct file *file, const char *buffer, - unsigned long count, void *data) +static void fldb_seq_stop(struct seq_file *p, void *v) { - struct lu_client_fld *fld = (struct lu_client_fld *)data; - ENTRY; + struct fld_seq_param *param = p->private; + const struct dt_it_ops *iops; + struct lu_server_fld *fld; + struct dt_object *obj; - LASSERT(fld != NULL); + if (param == NULL) + return; - fld_cache_flush(fld->lcf_cache); + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; - CDEBUG(D_INFO, "%s: Lookup cache is flushed\n", fld->lcf_name); - - RETURN(count); + iops->put(¶m->fsp_env, param->fsp_it); } -struct lprocfs_vars fld_server_proc_list[] = { - { NULL }}; +static void *fldb_seq_next(struct seq_file *p, void *v, loff_t *pos) +{ + struct fld_seq_param *param = p->private; + struct lu_server_fld *fld; + struct dt_object *obj; + const struct dt_it_ops *iops; + int rc; -struct lprocfs_vars fld_client_proc_list[] = { - { "targets", fld_proc_read_targets, NULL, NULL }, - { "hash", fld_proc_read_hash, fld_proc_write_hash, NULL }, - { "cache_flush", NULL, fld_proc_write_cache_flush, NULL }, - { NULL }}; -#endif + ++*pos; + if (param == NULL || param->fsp_stop) + return NULL; + + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; + + rc = iops->next(¶m->fsp_env, param->fsp_it); + if (rc > 0) { + param->fsp_stop = 1; + return NULL; + } + + *pos = be64_to_cpu(*(__u64 *)iops->key(¶m->fsp_env, param->fsp_it)); + return param; +} + +static int fldb_seq_show(struct seq_file *p, void *v) +{ + struct fld_seq_param *param = p->private; + struct lu_server_fld *fld; + struct dt_object *obj; + const struct dt_it_ops *iops; + struct fld_thread_info *info; + struct lu_seq_range *fld_rec; + int rc; + + if (param == NULL || param->fsp_stop) + return 0; + + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; + + info = lu_context_key_get(¶m->fsp_env.le_ctx, + &fld_thread_key); + fld_rec = &info->fti_rec; + rc = iops->rec(¶m->fsp_env, param->fsp_it, + (struct dt_rec *)fld_rec, 0); + if (rc != 0) { + CERROR("%s:read record error: rc %d\n", + fld->lsf_name, rc); + } else if (fld_rec->lsr_start != 0) { + range_be_to_cpu(fld_rec, fld_rec); + seq_printf(p, DRANGE"\n", PRANGE(fld_rec)); + } + + return rc; +} + +struct seq_operations fldb_sops = { + .start = fldb_seq_start, + .stop = fldb_seq_stop, + .next = fldb_seq_next, + .show = fldb_seq_show, +}; + +static int fldb_seq_open(struct inode *inode, struct file *file) +{ + struct seq_file *seq; + struct lu_server_fld *fld = inode->i_private; + struct dt_object *obj; + const struct dt_it_ops *iops; + struct fld_seq_param *param = NULL; + int env_init = 0; + int rc; + + rc = seq_open(file, &fldb_sops); + if (rc) + GOTO(out, rc); + + obj = fld->lsf_obj; + if (obj == NULL) { + seq = file->private_data; + seq->private = NULL; + return 0; + } + + OBD_ALLOC_PTR(param); + if (param == NULL) + GOTO(out, rc = -ENOMEM); + + rc = lu_env_init(¶m->fsp_env, LCT_MD_THREAD); + if (rc != 0) + GOTO(out, rc); + + env_init = 1; + iops = &obj->do_index_ops->dio_it; + param->fsp_it = iops->init(¶m->fsp_env, obj, 0); + if (IS_ERR(param->fsp_it)) + GOTO(out, rc = PTR_ERR(param->fsp_it)); + + param->fsp_fld = fld; + param->fsp_stop = 0; + + seq = file->private_data; + seq->private = param; +out: + if (rc != 0) { + if (env_init == 1) + lu_env_fini(¶m->fsp_env); + if (param != NULL) + OBD_FREE_PTR(param); + } + return rc; +} + +static int fldb_seq_release(struct inode *inode, struct file *file) +{ + struct seq_file *seq = file->private_data; + struct fld_seq_param *param; + struct lu_server_fld *fld; + struct dt_object *obj; + const struct dt_it_ops *iops; + + param = seq->private; + if (param == NULL) { + lprocfs_seq_release(inode, file); + return 0; + } + + fld = param->fsp_fld; + obj = fld->lsf_obj; + LASSERT(obj != NULL); + iops = &obj->do_index_ops->dio_it; + + LASSERT(iops != NULL); + LASSERT(param->fsp_it != NULL); + iops->fini(¶m->fsp_env, param->fsp_it); + lu_env_fini(¶m->fsp_env); + OBD_FREE_PTR(param); + lprocfs_seq_release(inode, file); + + return 0; +} + +const struct file_operations fld_debugfs_seq_fops = { + .owner = THIS_MODULE, + .open = fldb_seq_open, + .read = seq_read, + .release = fldb_seq_release, +}; + +# endif /* HAVE_SERVER_SUPPORT */