diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/fid/lproc_fid.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/fid/lproc_fid.c | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/drivers/staging/lustre/lustre/fid/lproc_fid.c b/drivers/staging/lustre/lustre/fid/lproc_fid.c deleted file mode 100644 index a1e5bf9f36ec..000000000000 --- a/drivers/staging/lustre/lustre/fid/lproc_fid.c +++ /dev/null @@ -1,226 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * 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.gnu.org/licenses/gpl-2.0.html - * - * GPL HEADER END - */ -/* - * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2011, 2015, 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 <obd_support.h> -#include <lustre_req_layout.h> -#include <lustre_fid.h> -#include "fid_internal.h" - -/* Format: [0x64BIT_INT - 0x64BIT_INT] + 32 bytes just in case */ -#define MAX_FID_RANGE_STRLEN (32 + 2 * 2 * sizeof(__u64)) -/* - * Note: this function is only used for testing, it is no safe for production - * use. - */ -static int -ldebugfs_fid_write_common(const char __user *buffer, size_t count, - struct lu_seq_range *range) -{ - struct lu_seq_range tmp; - int rc; - char kernbuf[MAX_FID_RANGE_STRLEN]; - - LASSERT(range); - - if (count >= sizeof(kernbuf)) - return -EINVAL; - - if (copy_from_user(kernbuf, buffer, count)) - return -EFAULT; - - kernbuf[count] = 0; - - if (count == 5 && strcmp(kernbuf, "clear") == 0) { - memset(range, 0, sizeof(*range)); - return count; - } - - /* of the form "[0x0000000240000400 - 0x000000028000400]" */ - rc = sscanf(kernbuf, "[%llx - %llx]\n", - (unsigned long long *)&tmp.lsr_start, - (unsigned long long *)&tmp.lsr_end); - if (rc != 2) - return -EINVAL; - if (!lu_seq_range_is_sane(&tmp) || lu_seq_range_is_zero(&tmp) || - tmp.lsr_start < range->lsr_start || tmp.lsr_end > range->lsr_end) - return -EINVAL; - *range = tmp; - return count; -} - -/* Client side debugfs stuff */ -static ssize_t -ldebugfs_fid_space_seq_write(struct file *file, - const char __user *buffer, - size_t count, loff_t *off) -{ - struct lu_client_seq *seq; - struct lu_seq_range range; - int rc; - - seq = ((struct seq_file *)file->private_data)->private; - - rc = ldebugfs_fid_write_common(buffer, count, &range); - - spin_lock(&seq->lcs_lock); - if (seq->lcs_update) - /* An RPC call is active to update lcs_space */ - rc = -EBUSY; - if (rc > 0) - seq->lcs_space = range; - spin_unlock(&seq->lcs_lock); - - if (rc > 0) { - CDEBUG(D_INFO, "%s: Space: " DRANGE "\n", - seq->lcs_name, PRANGE(&range)); - } - - return rc; -} - -static int -ldebugfs_fid_space_seq_show(struct seq_file *m, void *unused) -{ - struct lu_client_seq *seq = (struct lu_client_seq *)m->private; - int rc = 0; - - spin_lock(&seq->lcs_lock); - if (seq->lcs_update) - rc = -EBUSY; - else - seq_printf(m, "[%#llx - %#llx]:%x:%s\n", PRANGE(&seq->lcs_space)); - spin_unlock(&seq->lcs_lock); - - return rc; -} - -static ssize_t -ldebugfs_fid_width_seq_write(struct file *file, - const char __user *buffer, - size_t count, loff_t *off) -{ - struct lu_client_seq *seq; - __u64 max; - int rc, val; - - seq = ((struct seq_file *)file->private_data)->private; - - rc = lprocfs_write_helper(buffer, count, &val); - if (rc) - return rc; - - spin_lock(&seq->lcs_lock); - 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; - - CDEBUG(D_INFO, "%s: Sequence size: %llu\n", seq->lcs_name, - seq->lcs_width); - } - - spin_unlock(&seq->lcs_lock); - - return count; -} - -static int -ldebugfs_fid_width_seq_show(struct seq_file *m, void *unused) -{ - struct lu_client_seq *seq = (struct lu_client_seq *)m->private; - - spin_lock(&seq->lcs_lock); - seq_printf(m, "%llu\n", seq->lcs_width); - spin_unlock(&seq->lcs_lock); - - return 0; -} - -static int -ldebugfs_fid_fid_seq_show(struct seq_file *m, void *unused) -{ - struct lu_client_seq *seq = (struct lu_client_seq *)m->private; - - spin_lock(&seq->lcs_lock); - seq_printf(m, DFID "\n", PFID(&seq->lcs_fid)); - spin_unlock(&seq->lcs_lock); - - return 0; -} - -static int -ldebugfs_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; - - if (seq->lcs_exp) { - cli = &seq->lcs_exp->exp_obd->u.cli; - seq_printf(m, "%s\n", cli->cl_target_uuid.uuid); - } - - return 0; -} - -LPROC_SEQ_FOPS(ldebugfs_fid_space); -LPROC_SEQ_FOPS(ldebugfs_fid_width); -LPROC_SEQ_FOPS_RO(ldebugfs_fid_server); -LPROC_SEQ_FOPS_RO(ldebugfs_fid_fid); - -struct lprocfs_vars seq_client_debugfs_list[] = { - { .name = "space", - .fops = &ldebugfs_fid_space_fops }, - { .name = "width", - .fops = &ldebugfs_fid_width_fops }, - { .name = "server", - .fops = &ldebugfs_fid_server_fops }, - { .name = "fid", - .fops = &ldebugfs_fid_fid_fops }, - { NULL } -}; |