diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/fid/lproc_fid.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/fid/lproc_fid.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/fid/lproc_fid.c b/drivers/staging/lustre/lustre/fid/lproc_fid.c new file mode 100644 index 0000000..af817a8 --- /dev/null +++ b/drivers/staging/lustre/lustre/fid/lproc_fid.c @@ -0,0 +1,222 @@ +/* + * 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) 2007, 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. + * + * lustre/fid/lproc_fid.c + * + * Lustre Sequence Manager + * + * Author: Yury Umanets <umka@clusterfs.com> + */ + +#define DEBUG_SUBSYSTEM S_FID + +# include <linux/libcfs/libcfs.h> +# include <linux/module.h> + +#include <obd.h> +#include <obd_class.h> +#include <dt_object.h> +#include <md_object.h> +#include <obd_support.h> +#include <lustre_req_layout.h> +#include <lustre_fid.h> +#include "fid_internal.h" + +#ifdef LPROCFS +/* + * Note: this function is only used for testing, it is no safe for production + * use. + */ +static int +lprocfs_fid_write_common(const char *buffer, unsigned long count, + struct lu_seq_range *range) +{ + struct lu_seq_range tmp; + int rc; + ENTRY; + + LASSERT(range != NULL); + + rc = sscanf(buffer, "[%llx - %llx]\n", + (long long unsigned *)&tmp.lsr_start, + (long long unsigned *)&tmp.lsr_end); + if (rc != 2 || !range_is_sane(&tmp) || range_is_zero(&tmp)) + RETURN(-EINVAL); + *range = tmp; + RETURN(0); +} + +/* Client side procfs stuff */ +static ssize_t +lprocfs_fid_space_seq_write(struct file *file, const char *buffer, + size_t count, loff_t *off) +{ + struct lu_client_seq *seq = ((struct seq_file *)file->private_data)->private; + int rc; + ENTRY; + + LASSERT(seq != NULL); + + mutex_lock(&seq->lcs_mutex); + rc = lprocfs_fid_write_common(buffer, count, &seq->lcs_space); + + if (rc == 0) { + CDEBUG(D_INFO, "%s: Space: "DRANGE"\n", + seq->lcs_name, PRANGE(&seq->lcs_space)); + } + + mutex_unlock(&seq->lcs_mutex); + + RETURN(count); +} + +static int +lprocfs_fid_space_seq_show(struct seq_file *m, void *unused) +{ + struct lu_client_seq *seq = (struct lu_client_seq *)m->private; + int rc; + ENTRY; + + LASSERT(seq != NULL); + + mutex_lock(&seq->lcs_mutex); + rc = seq_printf(m, "["LPX64" - "LPX64"]:%x:%s\n", PRANGE(&seq->lcs_space)); + mutex_unlock(&seq->lcs_mutex); + + RETURN(rc); +} + +static ssize_t +lprocfs_fid_width_seq_write(struct file *file, const char *buffer, + size_t count, loff_t *off) +{ + struct lu_client_seq *seq = ((struct seq_file *)file->private_data)->private; + __u64 max; + int rc, val; + ENTRY; + + LASSERT(seq != NULL); + + rc = lprocfs_write_helper(buffer, count, &val); + if (rc) + RETURN(rc); + + mutex_lock(&seq->lcs_mutex); + if (seq->lcs_type == LUSTRE_SEQ_DATA) + max = LUSTRE_DATA_SEQ_MAX_WIDTH; + else + max = LUSTRE_METADATA_SEQ_MAX_WIDTH; + + if (val <= max && val > 0) { + seq->lcs_width = val; + + if (rc == 0) { + CDEBUG(D_INFO, "%s: Sequence size: "LPU64"\n", + seq->lcs_name, seq->lcs_width); + } + } + + mutex_unlock(&seq->lcs_mutex); + + RETURN(count); +} + +static int +lprocfs_fid_width_seq_show(struct seq_file *m, void *unused) +{ + struct lu_client_seq *seq = (struct lu_client_seq *)m->private; + int rc; + ENTRY; + + LASSERT(seq != NULL); + + mutex_lock(&seq->lcs_mutex); + rc = seq_printf(m, LPU64"\n", seq->lcs_width); + mutex_unlock(&seq->lcs_mutex); + + RETURN(rc); +} + +static int +lprocfs_fid_fid_seq_show(struct seq_file *m, void *unused) +{ + struct lu_client_seq *seq = (struct lu_client_seq *)m->private; + int rc; + ENTRY; + + LASSERT(seq != NULL); + + mutex_lock(&seq->lcs_mutex); + rc = seq_printf(m, DFID"\n", PFID(&seq->lcs_fid)); + mutex_unlock(&seq->lcs_mutex); + + RETURN(rc); +} + +static int +lprocfs_fid_server_seq_show(struct seq_file *m, void *unused) +{ + struct lu_client_seq *seq = (struct lu_client_seq *)m->private; + struct client_obd *cli; + int rc; + ENTRY; + + LASSERT(seq != NULL); + + if (seq->lcs_exp != NULL) { + cli = &seq->lcs_exp->exp_obd->u.cli; + rc = seq_printf(m, "%s\n", cli->cl_target_uuid.uuid); + } else { + rc = seq_printf(m, "%s\n", seq->lcs_srv->lss_name); + } + RETURN(rc); +} + +struct lprocfs_vars seq_server_proc_list[] = { +}; + +LPROC_SEQ_FOPS(lprocfs_fid_space); +LPROC_SEQ_FOPS(lprocfs_fid_width); +LPROC_SEQ_FOPS_RO(lprocfs_fid_server); +LPROC_SEQ_FOPS_RO(lprocfs_fid_fid); + +struct lprocfs_vars seq_client_proc_list[] = { + { "space", &lprocfs_fid_space_fops }, + { "width", &lprocfs_fid_width_fops }, + { "server", &lprocfs_fid_server_fops }, + { "fid", &lprocfs_fid_fid_fops }, + { NULL } +}; +#endif |