1326 lines
34 KiB
C
1326 lines
34 KiB
C
/*
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* GPL HEADER START
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 only,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 for more details (a copy is included
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* in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; If not, see
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* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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* GPL HEADER END
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*/
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/*
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* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
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* Use is subject to license terms.
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*
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* Copyright (c) 2011, 2015, Intel Corporation.
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*/
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/*
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* This file is part of Lustre, http://www.lustre.org/
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* Lustre is a trademark of Sun Microsystems, Inc.
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*/
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#define DEBUG_SUBSYSTEM S_CLASS
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#include "../include/obd_support.h"
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#include "../include/obd.h"
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#include "../include/lprocfs_status.h"
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#include "../include/lustre/lustre_idl.h"
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#include "../include/lustre_net.h"
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#include "../include/obd_class.h"
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#include "ptlrpc_internal.h"
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static struct ll_rpc_opcode {
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__u32 opcode;
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const char *opname;
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} ll_rpc_opcode_table[LUSTRE_MAX_OPCODES] = {
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{ OST_REPLY, "ost_reply" },
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{ OST_GETATTR, "ost_getattr" },
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{ OST_SETATTR, "ost_setattr" },
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{ OST_READ, "ost_read" },
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{ OST_WRITE, "ost_write" },
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{ OST_CREATE, "ost_create" },
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{ OST_DESTROY, "ost_destroy" },
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{ OST_GET_INFO, "ost_get_info" },
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{ OST_CONNECT, "ost_connect" },
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{ OST_DISCONNECT, "ost_disconnect" },
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{ OST_PUNCH, "ost_punch" },
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{ OST_OPEN, "ost_open" },
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{ OST_CLOSE, "ost_close" },
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{ OST_STATFS, "ost_statfs" },
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{ 14, NULL }, /* formerly OST_SAN_READ */
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{ 15, NULL }, /* formerly OST_SAN_WRITE */
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{ OST_SYNC, "ost_sync" },
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{ OST_SET_INFO, "ost_set_info" },
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{ OST_QUOTACHECK, "ost_quotacheck" },
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{ OST_QUOTACTL, "ost_quotactl" },
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{ OST_QUOTA_ADJUST_QUNIT, "ost_quota_adjust_qunit" },
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{ MDS_GETATTR, "mds_getattr" },
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{ MDS_GETATTR_NAME, "mds_getattr_lock" },
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{ MDS_CLOSE, "mds_close" },
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{ MDS_REINT, "mds_reint" },
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{ MDS_READPAGE, "mds_readpage" },
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{ MDS_CONNECT, "mds_connect" },
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{ MDS_DISCONNECT, "mds_disconnect" },
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{ MDS_GETSTATUS, "mds_getstatus" },
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{ MDS_STATFS, "mds_statfs" },
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{ MDS_PIN, "mds_pin" },
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{ MDS_UNPIN, "mds_unpin" },
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{ MDS_SYNC, "mds_sync" },
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{ MDS_DONE_WRITING, "mds_done_writing" },
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{ MDS_SET_INFO, "mds_set_info" },
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{ MDS_QUOTACHECK, "mds_quotacheck" },
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{ MDS_QUOTACTL, "mds_quotactl" },
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{ MDS_GETXATTR, "mds_getxattr" },
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{ MDS_SETXATTR, "mds_setxattr" },
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{ MDS_WRITEPAGE, "mds_writepage" },
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{ MDS_IS_SUBDIR, "mds_is_subdir" },
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{ MDS_GET_INFO, "mds_get_info" },
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{ MDS_HSM_STATE_GET, "mds_hsm_state_get" },
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{ MDS_HSM_STATE_SET, "mds_hsm_state_set" },
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{ MDS_HSM_ACTION, "mds_hsm_action" },
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{ MDS_HSM_PROGRESS, "mds_hsm_progress" },
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{ MDS_HSM_REQUEST, "mds_hsm_request" },
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{ MDS_HSM_CT_REGISTER, "mds_hsm_ct_register" },
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{ MDS_HSM_CT_UNREGISTER, "mds_hsm_ct_unregister" },
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{ MDS_SWAP_LAYOUTS, "mds_swap_layouts" },
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{ LDLM_ENQUEUE, "ldlm_enqueue" },
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{ LDLM_CONVERT, "ldlm_convert" },
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{ LDLM_CANCEL, "ldlm_cancel" },
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{ LDLM_BL_CALLBACK, "ldlm_bl_callback" },
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{ LDLM_CP_CALLBACK, "ldlm_cp_callback" },
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{ LDLM_GL_CALLBACK, "ldlm_gl_callback" },
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{ LDLM_SET_INFO, "ldlm_set_info" },
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{ MGS_CONNECT, "mgs_connect" },
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{ MGS_DISCONNECT, "mgs_disconnect" },
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{ MGS_EXCEPTION, "mgs_exception" },
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{ MGS_TARGET_REG, "mgs_target_reg" },
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{ MGS_TARGET_DEL, "mgs_target_del" },
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{ MGS_SET_INFO, "mgs_set_info" },
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{ MGS_CONFIG_READ, "mgs_config_read" },
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{ OBD_PING, "obd_ping" },
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{ OBD_LOG_CANCEL, "llog_cancel" },
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{ OBD_QC_CALLBACK, "obd_quota_callback" },
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{ OBD_IDX_READ, "dt_index_read" },
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{ LLOG_ORIGIN_HANDLE_CREATE, "llog_origin_handle_open" },
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{ LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
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{ LLOG_ORIGIN_HANDLE_READ_HEADER, "llog_origin_handle_read_header" },
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{ LLOG_ORIGIN_HANDLE_WRITE_REC, "llog_origin_handle_write_rec" },
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{ LLOG_ORIGIN_HANDLE_CLOSE, "llog_origin_handle_close" },
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{ LLOG_ORIGIN_CONNECT, "llog_origin_connect" },
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{ LLOG_CATINFO, "llog_catinfo" },
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{ LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
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{ LLOG_ORIGIN_HANDLE_DESTROY, "llog_origin_handle_destroy" },
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{ QUOTA_DQACQ, "quota_acquire" },
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{ QUOTA_DQREL, "quota_release" },
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{ SEQ_QUERY, "seq_query" },
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{ SEC_CTX_INIT, "sec_ctx_init" },
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{ SEC_CTX_INIT_CONT, "sec_ctx_init_cont" },
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{ SEC_CTX_FINI, "sec_ctx_fini" },
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{ FLD_QUERY, "fld_query" },
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};
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static struct ll_eopcode {
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__u32 opcode;
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const char *opname;
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} ll_eopcode_table[EXTRA_LAST_OPC] = {
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{ LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
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{ LDLM_PLAIN_ENQUEUE, "ldlm_plain_enqueue" },
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{ LDLM_EXTENT_ENQUEUE, "ldlm_extent_enqueue" },
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{ LDLM_FLOCK_ENQUEUE, "ldlm_flock_enqueue" },
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{ LDLM_IBITS_ENQUEUE, "ldlm_ibits_enqueue" },
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{ MDS_REINT_SETATTR, "mds_reint_setattr" },
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{ MDS_REINT_CREATE, "mds_reint_create" },
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{ MDS_REINT_LINK, "mds_reint_link" },
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{ MDS_REINT_UNLINK, "mds_reint_unlink" },
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{ MDS_REINT_RENAME, "mds_reint_rename" },
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{ MDS_REINT_OPEN, "mds_reint_open" },
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{ MDS_REINT_SETXATTR, "mds_reint_setxattr" },
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{ BRW_READ_BYTES, "read_bytes" },
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{ BRW_WRITE_BYTES, "write_bytes" },
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};
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const char *ll_opcode2str(__u32 opcode)
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{
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/* When one of the assertions below fail, chances are that:
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* 1) A new opcode was added in include/lustre/lustre_idl.h,
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* but is missing from the table above.
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* or 2) The opcode space was renumbered or rearranged,
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* and the opcode_offset() function in
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* ptlrpc_internal.h needs to be modified.
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*/
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__u32 offset = opcode_offset(opcode);
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LASSERTF(offset < LUSTRE_MAX_OPCODES,
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"offset %u >= LUSTRE_MAX_OPCODES %u\n",
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offset, LUSTRE_MAX_OPCODES);
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LASSERTF(ll_rpc_opcode_table[offset].opcode == opcode,
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"ll_rpc_opcode_table[%u].opcode %u != opcode %u\n",
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offset, ll_rpc_opcode_table[offset].opcode, opcode);
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return ll_rpc_opcode_table[offset].opname;
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}
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static const char *ll_eopcode2str(__u32 opcode)
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{
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LASSERT(ll_eopcode_table[opcode].opcode == opcode);
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return ll_eopcode_table[opcode].opname;
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}
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static void
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ptlrpc_ldebugfs_register(struct dentry *root, char *dir,
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char *name,
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struct dentry **debugfs_root_ret,
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struct lprocfs_stats **stats_ret)
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{
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struct dentry *svc_debugfs_entry;
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struct lprocfs_stats *svc_stats;
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int i, rc;
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unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
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LPROCFS_CNTR_STDDEV;
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LASSERT(!*debugfs_root_ret);
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LASSERT(!*stats_ret);
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svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES+LUSTRE_MAX_OPCODES,
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0);
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if (!svc_stats)
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return;
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if (dir) {
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svc_debugfs_entry = ldebugfs_register(dir, root, NULL, NULL);
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if (IS_ERR(svc_debugfs_entry)) {
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lprocfs_free_stats(&svc_stats);
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return;
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}
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} else {
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svc_debugfs_entry = root;
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}
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lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
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svc_counter_config, "req_waittime", "usec");
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lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
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svc_counter_config, "req_qdepth", "reqs");
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lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
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svc_counter_config, "req_active", "reqs");
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lprocfs_counter_init(svc_stats, PTLRPC_TIMEOUT,
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svc_counter_config, "req_timeout", "sec");
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lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
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svc_counter_config, "reqbuf_avail", "bufs");
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for (i = 0; i < EXTRA_LAST_OPC; i++) {
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char *units;
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switch (i) {
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case BRW_WRITE_BYTES:
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case BRW_READ_BYTES:
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units = "bytes";
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break;
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default:
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units = "reqs";
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break;
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}
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lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
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svc_counter_config,
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ll_eopcode2str(i), units);
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}
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for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
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__u32 opcode = ll_rpc_opcode_table[i].opcode;
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lprocfs_counter_init(svc_stats,
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EXTRA_MAX_OPCODES + i, svc_counter_config,
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ll_opcode2str(opcode), "usec");
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}
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rc = ldebugfs_register_stats(svc_debugfs_entry, name, svc_stats);
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if (rc < 0) {
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if (dir)
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ldebugfs_remove(&svc_debugfs_entry);
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lprocfs_free_stats(&svc_stats);
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} else {
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if (dir)
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*debugfs_root_ret = svc_debugfs_entry;
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*stats_ret = svc_stats;
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}
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}
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static int
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ptlrpc_lprocfs_req_history_len_seq_show(struct seq_file *m, void *v)
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{
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struct ptlrpc_service *svc = m->private;
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struct ptlrpc_service_part *svcpt;
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int total = 0;
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int i;
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ptlrpc_service_for_each_part(svcpt, i, svc)
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total += svcpt->scp_hist_nrqbds;
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seq_printf(m, "%d\n", total);
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return 0;
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}
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LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_req_history_len);
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static int
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ptlrpc_lprocfs_req_history_max_seq_show(struct seq_file *m, void *n)
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{
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struct ptlrpc_service *svc = m->private;
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struct ptlrpc_service_part *svcpt;
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int total = 0;
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int i;
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ptlrpc_service_for_each_part(svcpt, i, svc)
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total += svc->srv_hist_nrqbds_cpt_max;
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seq_printf(m, "%d\n", total);
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return 0;
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}
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static ssize_t
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ptlrpc_lprocfs_req_history_max_seq_write(struct file *file,
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const char __user *buffer,
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size_t count, loff_t *off)
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{
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struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
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int bufpages;
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int val;
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int rc;
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rc = lprocfs_write_helper(buffer, count, &val);
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if (rc < 0)
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return rc;
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if (val < 0)
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return -ERANGE;
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/* This sanity check is more of an insanity check; we can still
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* hose a kernel by allowing the request history to grow too
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* far.
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*/
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bufpages = (svc->srv_buf_size + PAGE_SIZE - 1) >> PAGE_SHIFT;
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if (val > totalram_pages / (2 * bufpages))
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return -ERANGE;
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spin_lock(&svc->srv_lock);
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if (val == 0)
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svc->srv_hist_nrqbds_cpt_max = 0;
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else
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svc->srv_hist_nrqbds_cpt_max = max(1, (val / svc->srv_ncpts));
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spin_unlock(&svc->srv_lock);
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return count;
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}
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LPROC_SEQ_FOPS(ptlrpc_lprocfs_req_history_max);
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static ssize_t threads_min_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
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srv_kobj);
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return sprintf(buf, "%d\n", svc->srv_nthrs_cpt_init * svc->srv_ncpts);
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}
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static ssize_t threads_min_store(struct kobject *kobj, struct attribute *attr,
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const char *buffer, size_t count)
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{
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struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
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srv_kobj);
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unsigned long val;
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int rc = kstrtoul(buffer, 10, &val);
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if (rc < 0)
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return rc;
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if (val / svc->srv_ncpts < PTLRPC_NTHRS_INIT)
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return -ERANGE;
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spin_lock(&svc->srv_lock);
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if (val > svc->srv_nthrs_cpt_limit * svc->srv_ncpts) {
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spin_unlock(&svc->srv_lock);
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return -ERANGE;
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}
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svc->srv_nthrs_cpt_init = val / svc->srv_ncpts;
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spin_unlock(&svc->srv_lock);
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return count;
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}
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LUSTRE_RW_ATTR(threads_min);
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static ssize_t threads_started_show(struct kobject *kobj,
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struct attribute *attr,
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char *buf)
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{
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struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
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srv_kobj);
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struct ptlrpc_service_part *svcpt;
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int total = 0;
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int i;
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ptlrpc_service_for_each_part(svcpt, i, svc)
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total += svcpt->scp_nthrs_running;
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return sprintf(buf, "%d\n", total);
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}
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LUSTRE_RO_ATTR(threads_started);
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static ssize_t threads_max_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
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srv_kobj);
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return sprintf(buf, "%d\n", svc->srv_nthrs_cpt_limit * svc->srv_ncpts);
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}
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static ssize_t threads_max_store(struct kobject *kobj, struct attribute *attr,
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const char *buffer, size_t count)
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{
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struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
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srv_kobj);
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unsigned long val;
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int rc = kstrtoul(buffer, 10, &val);
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if (rc < 0)
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return rc;
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if (val / svc->srv_ncpts < PTLRPC_NTHRS_INIT)
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return -ERANGE;
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spin_lock(&svc->srv_lock);
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if (val < svc->srv_nthrs_cpt_init * svc->srv_ncpts) {
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spin_unlock(&svc->srv_lock);
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return -ERANGE;
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}
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svc->srv_nthrs_cpt_limit = val / svc->srv_ncpts;
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spin_unlock(&svc->srv_lock);
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return count;
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}
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LUSTRE_RW_ATTR(threads_max);
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/**
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* \addtogoup nrs
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* @{
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*/
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/**
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* Translates \e ptlrpc_nrs_pol_state values to human-readable strings.
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*
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* \param[in] state The policy state
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*/
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static const char *nrs_state2str(enum ptlrpc_nrs_pol_state state)
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{
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switch (state) {
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default:
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LBUG();
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case NRS_POL_STATE_INVALID:
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return "invalid";
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case NRS_POL_STATE_STOPPED:
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return "stopped";
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case NRS_POL_STATE_STOPPING:
|
|
return "stopping";
|
|
case NRS_POL_STATE_STARTING:
|
|
return "starting";
|
|
case NRS_POL_STATE_STARTED:
|
|
return "started";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Obtains status information for \a policy.
|
|
*
|
|
* Information is copied in \a info.
|
|
*
|
|
* \param[in] policy The policy
|
|
* \param[out] info Holds returned status information
|
|
*/
|
|
static void nrs_policy_get_info_locked(struct ptlrpc_nrs_policy *policy,
|
|
struct ptlrpc_nrs_pol_info *info)
|
|
{
|
|
assert_spin_locked(&policy->pol_nrs->nrs_lock);
|
|
|
|
memcpy(info->pi_name, policy->pol_desc->pd_name, NRS_POL_NAME_MAX);
|
|
|
|
info->pi_fallback = !!(policy->pol_flags & PTLRPC_NRS_FL_FALLBACK);
|
|
info->pi_state = policy->pol_state;
|
|
/**
|
|
* XXX: These are accessed without holding
|
|
* ptlrpc_service_part::scp_req_lock.
|
|
*/
|
|
info->pi_req_queued = policy->pol_req_queued;
|
|
info->pi_req_started = policy->pol_req_started;
|
|
}
|
|
|
|
/**
|
|
* Reads and prints policy status information for all policies of a PTLRPC
|
|
* service.
|
|
*/
|
|
static int ptlrpc_lprocfs_nrs_seq_show(struct seq_file *m, void *n)
|
|
{
|
|
struct ptlrpc_service *svc = m->private;
|
|
struct ptlrpc_service_part *svcpt;
|
|
struct ptlrpc_nrs *nrs;
|
|
struct ptlrpc_nrs_policy *policy;
|
|
struct ptlrpc_nrs_pol_info *infos;
|
|
struct ptlrpc_nrs_pol_info tmp;
|
|
unsigned num_pols;
|
|
unsigned pol_idx = 0;
|
|
bool hp = false;
|
|
int i;
|
|
int rc = 0;
|
|
|
|
/**
|
|
* Serialize NRS core lprocfs operations with policy registration/
|
|
* unregistration.
|
|
*/
|
|
mutex_lock(&nrs_core.nrs_mutex);
|
|
|
|
/**
|
|
* Use the first service partition's regular NRS head in order to obtain
|
|
* the number of policies registered with NRS heads of this service. All
|
|
* service partitions will have the same number of policies.
|
|
*/
|
|
nrs = nrs_svcpt2nrs(svc->srv_parts[0], false);
|
|
|
|
spin_lock(&nrs->nrs_lock);
|
|
num_pols = svc->srv_parts[0]->scp_nrs_reg.nrs_num_pols;
|
|
spin_unlock(&nrs->nrs_lock);
|
|
|
|
infos = kcalloc(num_pols, sizeof(*infos), GFP_NOFS);
|
|
if (!infos) {
|
|
rc = -ENOMEM;
|
|
goto unlock;
|
|
}
|
|
again:
|
|
|
|
ptlrpc_service_for_each_part(svcpt, i, svc) {
|
|
nrs = nrs_svcpt2nrs(svcpt, hp);
|
|
spin_lock(&nrs->nrs_lock);
|
|
|
|
pol_idx = 0;
|
|
|
|
list_for_each_entry(policy, &nrs->nrs_policy_list, pol_list) {
|
|
LASSERT(pol_idx < num_pols);
|
|
|
|
nrs_policy_get_info_locked(policy, &tmp);
|
|
/**
|
|
* Copy values when handling the first service
|
|
* partition.
|
|
*/
|
|
if (i == 0) {
|
|
memcpy(infos[pol_idx].pi_name, tmp.pi_name,
|
|
NRS_POL_NAME_MAX);
|
|
memcpy(&infos[pol_idx].pi_state, &tmp.pi_state,
|
|
sizeof(tmp.pi_state));
|
|
infos[pol_idx].pi_fallback = tmp.pi_fallback;
|
|
/**
|
|
* For the rest of the service partitions
|
|
* sanity-check the values we get.
|
|
*/
|
|
} else {
|
|
LASSERT(strncmp(infos[pol_idx].pi_name,
|
|
tmp.pi_name,
|
|
NRS_POL_NAME_MAX) == 0);
|
|
/**
|
|
* Not asserting ptlrpc_nrs_pol_info::pi_state,
|
|
* because it may be different between
|
|
* instances of the same policy in different
|
|
* service partitions.
|
|
*/
|
|
LASSERT(infos[pol_idx].pi_fallback ==
|
|
tmp.pi_fallback);
|
|
}
|
|
|
|
infos[pol_idx].pi_req_queued += tmp.pi_req_queued;
|
|
infos[pol_idx].pi_req_started += tmp.pi_req_started;
|
|
|
|
pol_idx++;
|
|
}
|
|
spin_unlock(&nrs->nrs_lock);
|
|
}
|
|
|
|
/**
|
|
* Policy status information output is in YAML format.
|
|
* For example:
|
|
*
|
|
* regular_requests:
|
|
* - name: fifo
|
|
* state: started
|
|
* fallback: yes
|
|
* queued: 0
|
|
* active: 0
|
|
*
|
|
* - name: crrn
|
|
* state: started
|
|
* fallback: no
|
|
* queued: 2015
|
|
* active: 384
|
|
*
|
|
* high_priority_requests:
|
|
* - name: fifo
|
|
* state: started
|
|
* fallback: yes
|
|
* queued: 0
|
|
* active: 2
|
|
*
|
|
* - name: crrn
|
|
* state: stopped
|
|
* fallback: no
|
|
* queued: 0
|
|
* active: 0
|
|
*/
|
|
seq_printf(m, "%s\n",
|
|
!hp ? "\nregular_requests:" : "high_priority_requests:");
|
|
|
|
for (pol_idx = 0; pol_idx < num_pols; pol_idx++) {
|
|
seq_printf(m, " - name: %s\n"
|
|
" state: %s\n"
|
|
" fallback: %s\n"
|
|
" queued: %-20d\n"
|
|
" active: %-20d\n\n",
|
|
infos[pol_idx].pi_name,
|
|
nrs_state2str(infos[pol_idx].pi_state),
|
|
infos[pol_idx].pi_fallback ? "yes" : "no",
|
|
(int)infos[pol_idx].pi_req_queued,
|
|
(int)infos[pol_idx].pi_req_started);
|
|
}
|
|
|
|
if (!hp && nrs_svc_has_hp(svc)) {
|
|
memset(infos, 0, num_pols * sizeof(*infos));
|
|
|
|
/**
|
|
* Redo the processing for the service's HP NRS heads' policies.
|
|
*/
|
|
hp = true;
|
|
goto again;
|
|
}
|
|
|
|
kfree(infos);
|
|
unlock:
|
|
mutex_unlock(&nrs_core.nrs_mutex);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* The longest valid command string is the maximum policy name size, plus the
|
|
* length of the " reg" substring
|
|
*/
|
|
#define LPROCFS_NRS_WR_MAX_CMD (NRS_POL_NAME_MAX + sizeof(" reg") - 1)
|
|
|
|
/**
|
|
* Starts and stops a given policy on a PTLRPC service.
|
|
*
|
|
* Commands consist of the policy name, followed by an optional [reg|hp] token;
|
|
* if the optional token is omitted, the operation is performed on both the
|
|
* regular and high-priority (if the service has one) NRS head.
|
|
*/
|
|
static ssize_t ptlrpc_lprocfs_nrs_seq_write(struct file *file,
|
|
const char __user *buffer,
|
|
size_t count, loff_t *off)
|
|
{
|
|
struct ptlrpc_service *svc = ((struct seq_file *)file->private_data)->private;
|
|
enum ptlrpc_nrs_queue_type queue = PTLRPC_NRS_QUEUE_BOTH;
|
|
char *cmd;
|
|
char *cmd_copy = NULL;
|
|
char *token;
|
|
int rc = 0;
|
|
|
|
if (count >= LPROCFS_NRS_WR_MAX_CMD)
|
|
return -EINVAL;
|
|
|
|
cmd = kzalloc(LPROCFS_NRS_WR_MAX_CMD, GFP_NOFS);
|
|
if (!cmd)
|
|
return -ENOMEM;
|
|
/**
|
|
* strsep() modifies its argument, so keep a copy
|
|
*/
|
|
cmd_copy = cmd;
|
|
|
|
if (copy_from_user(cmd, buffer, count)) {
|
|
rc = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
cmd[count] = '\0';
|
|
|
|
token = strsep(&cmd, " ");
|
|
|
|
if (strlen(token) > NRS_POL_NAME_MAX - 1) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/**
|
|
* No [reg|hp] token has been specified
|
|
*/
|
|
if (!cmd)
|
|
goto default_queue;
|
|
|
|
/**
|
|
* The second token is either NULL, or an optional [reg|hp] string
|
|
*/
|
|
if (strcmp(cmd, "reg") == 0)
|
|
queue = PTLRPC_NRS_QUEUE_REG;
|
|
else if (strcmp(cmd, "hp") == 0)
|
|
queue = PTLRPC_NRS_QUEUE_HP;
|
|
else {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
default_queue:
|
|
|
|
if (queue == PTLRPC_NRS_QUEUE_HP && !nrs_svc_has_hp(svc)) {
|
|
rc = -ENODEV;
|
|
goto out;
|
|
} else if (queue == PTLRPC_NRS_QUEUE_BOTH && !nrs_svc_has_hp(svc))
|
|
queue = PTLRPC_NRS_QUEUE_REG;
|
|
|
|
/**
|
|
* Serialize NRS core lprocfs operations with policy registration/
|
|
* unregistration.
|
|
*/
|
|
mutex_lock(&nrs_core.nrs_mutex);
|
|
|
|
rc = ptlrpc_nrs_policy_control(svc, queue, token, PTLRPC_NRS_CTL_START,
|
|
false, NULL);
|
|
|
|
mutex_unlock(&nrs_core.nrs_mutex);
|
|
out:
|
|
kfree(cmd_copy);
|
|
|
|
return rc < 0 ? rc : count;
|
|
}
|
|
|
|
LPROC_SEQ_FOPS(ptlrpc_lprocfs_nrs);
|
|
|
|
/** @} nrs */
|
|
|
|
struct ptlrpc_srh_iterator {
|
|
int srhi_idx;
|
|
__u64 srhi_seq;
|
|
struct ptlrpc_request *srhi_req;
|
|
};
|
|
|
|
static int
|
|
ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service_part *svcpt,
|
|
struct ptlrpc_srh_iterator *srhi,
|
|
__u64 seq)
|
|
{
|
|
struct list_head *e;
|
|
struct ptlrpc_request *req;
|
|
|
|
if (srhi->srhi_req && srhi->srhi_seq > svcpt->scp_hist_seq_culled &&
|
|
srhi->srhi_seq <= seq) {
|
|
/* If srhi_req was set previously, hasn't been culled and
|
|
* we're searching for a seq on or after it (i.e. more
|
|
* recent), search from it onwards.
|
|
* Since the service history is LRU (i.e. culled reqs will
|
|
* be near the head), we shouldn't have to do long
|
|
* re-scans
|
|
*/
|
|
LASSERTF(srhi->srhi_seq == srhi->srhi_req->rq_history_seq,
|
|
"%s:%d: seek seq %llu, request seq %llu\n",
|
|
svcpt->scp_service->srv_name, svcpt->scp_cpt,
|
|
srhi->srhi_seq, srhi->srhi_req->rq_history_seq);
|
|
LASSERTF(!list_empty(&svcpt->scp_hist_reqs),
|
|
"%s:%d: seek offset %llu, request seq %llu, last culled %llu\n",
|
|
svcpt->scp_service->srv_name, svcpt->scp_cpt,
|
|
seq, srhi->srhi_seq, svcpt->scp_hist_seq_culled);
|
|
e = &srhi->srhi_req->rq_history_list;
|
|
} else {
|
|
/* search from start */
|
|
e = svcpt->scp_hist_reqs.next;
|
|
}
|
|
|
|
while (e != &svcpt->scp_hist_reqs) {
|
|
req = list_entry(e, struct ptlrpc_request, rq_history_list);
|
|
|
|
if (req->rq_history_seq >= seq) {
|
|
srhi->srhi_seq = req->rq_history_seq;
|
|
srhi->srhi_req = req;
|
|
return 0;
|
|
}
|
|
e = e->next;
|
|
}
|
|
|
|
return -ENOENT;
|
|
}
|
|
|
|
/*
|
|
* ptlrpc history sequence is used as "position" of seq_file, in some case,
|
|
* seq_read() will increase "position" to indicate reading the next
|
|
* element, however, low bits of history sequence are reserved for CPT id
|
|
* (check the details from comments before ptlrpc_req_add_history), which
|
|
* means seq_read() might change CPT id of history sequence and never
|
|
* finish reading of requests on a CPT. To make it work, we have to shift
|
|
* CPT id to high bits and timestamp to low bits, so seq_read() will only
|
|
* increase timestamp which can correctly indicate the next position.
|
|
*/
|
|
|
|
/* convert seq_file pos to cpt */
|
|
#define PTLRPC_REQ_POS2CPT(svc, pos) \
|
|
((svc)->srv_cpt_bits == 0 ? 0 : \
|
|
(__u64)(pos) >> (64 - (svc)->srv_cpt_bits))
|
|
|
|
/* make up seq_file pos from cpt */
|
|
#define PTLRPC_REQ_CPT2POS(svc, cpt) \
|
|
((svc)->srv_cpt_bits == 0 ? 0 : \
|
|
(cpt) << (64 - (svc)->srv_cpt_bits))
|
|
|
|
/* convert sequence to position */
|
|
#define PTLRPC_REQ_SEQ2POS(svc, seq) \
|
|
((svc)->srv_cpt_bits == 0 ? (seq) : \
|
|
((seq) >> (svc)->srv_cpt_bits) | \
|
|
((seq) << (64 - (svc)->srv_cpt_bits)))
|
|
|
|
/* convert position to sequence */
|
|
#define PTLRPC_REQ_POS2SEQ(svc, pos) \
|
|
((svc)->srv_cpt_bits == 0 ? (pos) : \
|
|
((__u64)(pos) << (svc)->srv_cpt_bits) | \
|
|
((__u64)(pos) >> (64 - (svc)->srv_cpt_bits)))
|
|
|
|
static void *
|
|
ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
|
|
{
|
|
struct ptlrpc_service *svc = s->private;
|
|
struct ptlrpc_service_part *svcpt;
|
|
struct ptlrpc_srh_iterator *srhi;
|
|
unsigned int cpt;
|
|
int rc;
|
|
int i;
|
|
|
|
if (sizeof(loff_t) != sizeof(__u64)) { /* can't support */
|
|
CWARN("Failed to read request history because size of loff_t %d can't match size of u64\n",
|
|
(int)sizeof(loff_t));
|
|
return NULL;
|
|
}
|
|
|
|
srhi = kzalloc(sizeof(*srhi), GFP_NOFS);
|
|
if (!srhi)
|
|
return NULL;
|
|
|
|
srhi->srhi_seq = 0;
|
|
srhi->srhi_req = NULL;
|
|
|
|
cpt = PTLRPC_REQ_POS2CPT(svc, *pos);
|
|
|
|
ptlrpc_service_for_each_part(svcpt, i, svc) {
|
|
if (i < cpt) /* skip */
|
|
continue;
|
|
if (i > cpt) /* make up the lowest position for this CPT */
|
|
*pos = PTLRPC_REQ_CPT2POS(svc, i);
|
|
|
|
spin_lock(&svcpt->scp_lock);
|
|
rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi,
|
|
PTLRPC_REQ_POS2SEQ(svc, *pos));
|
|
spin_unlock(&svcpt->scp_lock);
|
|
if (rc == 0) {
|
|
*pos = PTLRPC_REQ_SEQ2POS(svc, srhi->srhi_seq);
|
|
srhi->srhi_idx = i;
|
|
return srhi;
|
|
}
|
|
}
|
|
|
|
kfree(srhi);
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
|
|
{
|
|
struct ptlrpc_srh_iterator *srhi = iter;
|
|
|
|
kfree(srhi);
|
|
}
|
|
|
|
static void *
|
|
ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
|
|
void *iter, loff_t *pos)
|
|
{
|
|
struct ptlrpc_service *svc = s->private;
|
|
struct ptlrpc_srh_iterator *srhi = iter;
|
|
struct ptlrpc_service_part *svcpt;
|
|
__u64 seq;
|
|
int rc;
|
|
int i;
|
|
|
|
for (i = srhi->srhi_idx; i < svc->srv_ncpts; i++) {
|
|
svcpt = svc->srv_parts[i];
|
|
|
|
if (i > srhi->srhi_idx) { /* reset iterator for a new CPT */
|
|
srhi->srhi_req = NULL;
|
|
seq = srhi->srhi_seq = 0;
|
|
} else { /* the next sequence */
|
|
seq = srhi->srhi_seq + (1 << svc->srv_cpt_bits);
|
|
}
|
|
|
|
spin_lock(&svcpt->scp_lock);
|
|
rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, seq);
|
|
spin_unlock(&svcpt->scp_lock);
|
|
if (rc == 0) {
|
|
*pos = PTLRPC_REQ_SEQ2POS(svc, srhi->srhi_seq);
|
|
srhi->srhi_idx = i;
|
|
return srhi;
|
|
}
|
|
}
|
|
|
|
kfree(srhi);
|
|
return NULL;
|
|
}
|
|
|
|
static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
|
|
{
|
|
struct ptlrpc_service *svc = s->private;
|
|
struct ptlrpc_srh_iterator *srhi = iter;
|
|
struct ptlrpc_service_part *svcpt;
|
|
struct ptlrpc_request *req;
|
|
int rc;
|
|
|
|
LASSERT(srhi->srhi_idx < svc->srv_ncpts);
|
|
|
|
svcpt = svc->srv_parts[srhi->srhi_idx];
|
|
|
|
spin_lock(&svcpt->scp_lock);
|
|
|
|
rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, srhi->srhi_seq);
|
|
|
|
if (rc == 0) {
|
|
char nidstr[LNET_NIDSTR_SIZE];
|
|
|
|
req = srhi->srhi_req;
|
|
|
|
libcfs_nid2str_r(req->rq_self, nidstr, sizeof(nidstr));
|
|
/* Print common req fields.
|
|
* CAVEAT EMPTOR: we're racing with the service handler
|
|
* here. The request could contain any old crap, so you
|
|
* must be just as careful as the service's request
|
|
* parser. Currently I only print stuff here I know is OK
|
|
* to look at coz it was set up in request_in_callback()!!!
|
|
*/
|
|
seq_printf(s, "%lld:%s:%s:x%llu:%d:%s:%lld:%lds(%+lds) ",
|
|
req->rq_history_seq, nidstr,
|
|
libcfs_id2str(req->rq_peer), req->rq_xid,
|
|
req->rq_reqlen, ptlrpc_rqphase2str(req),
|
|
(s64)req->rq_arrival_time.tv_sec,
|
|
(long)(req->rq_sent - req->rq_arrival_time.tv_sec),
|
|
(long)(req->rq_sent - req->rq_deadline));
|
|
if (!svc->srv_ops.so_req_printer)
|
|
seq_putc(s, '\n');
|
|
else
|
|
svc->srv_ops.so_req_printer(s, srhi->srhi_req);
|
|
}
|
|
|
|
spin_unlock(&svcpt->scp_lock);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
|
|
{
|
|
static struct seq_operations sops = {
|
|
.start = ptlrpc_lprocfs_svc_req_history_start,
|
|
.stop = ptlrpc_lprocfs_svc_req_history_stop,
|
|
.next = ptlrpc_lprocfs_svc_req_history_next,
|
|
.show = ptlrpc_lprocfs_svc_req_history_show,
|
|
};
|
|
struct seq_file *seqf;
|
|
int rc;
|
|
|
|
rc = seq_open(file, &sops);
|
|
if (rc)
|
|
return rc;
|
|
|
|
seqf = file->private_data;
|
|
seqf->private = inode->i_private;
|
|
return 0;
|
|
}
|
|
|
|
/* See also lprocfs_rd_timeouts */
|
|
static int ptlrpc_lprocfs_timeouts_seq_show(struct seq_file *m, void *n)
|
|
{
|
|
struct ptlrpc_service *svc = m->private;
|
|
struct ptlrpc_service_part *svcpt;
|
|
struct dhms ts;
|
|
time64_t worstt;
|
|
unsigned int cur;
|
|
unsigned int worst;
|
|
int i;
|
|
|
|
if (AT_OFF) {
|
|
seq_printf(m, "adaptive timeouts off, using obd_timeout %u\n",
|
|
obd_timeout);
|
|
return 0;
|
|
}
|
|
|
|
ptlrpc_service_for_each_part(svcpt, i, svc) {
|
|
cur = at_get(&svcpt->scp_at_estimate);
|
|
worst = svcpt->scp_at_estimate.at_worst_ever;
|
|
worstt = svcpt->scp_at_estimate.at_worst_time;
|
|
s2dhms(&ts, ktime_get_real_seconds() - worstt);
|
|
|
|
seq_printf(m, "%10s : cur %3u worst %3u (at %lld, "
|
|
DHMS_FMT " ago) ", "service",
|
|
cur, worst, (s64)worstt, DHMS_VARS(&ts));
|
|
|
|
lprocfs_at_hist_helper(m, &svcpt->scp_at_estimate);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
LPROC_SEQ_FOPS_RO(ptlrpc_lprocfs_timeouts);
|
|
|
|
static ssize_t high_priority_ratio_show(struct kobject *kobj,
|
|
struct attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
|
|
srv_kobj);
|
|
return sprintf(buf, "%d\n", svc->srv_hpreq_ratio);
|
|
}
|
|
|
|
static ssize_t high_priority_ratio_store(struct kobject *kobj,
|
|
struct attribute *attr,
|
|
const char *buffer,
|
|
size_t count)
|
|
{
|
|
struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
|
|
srv_kobj);
|
|
int rc;
|
|
int val;
|
|
|
|
rc = kstrtoint(buffer, 10, &val);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (val < 0)
|
|
return -ERANGE;
|
|
|
|
spin_lock(&svc->srv_lock);
|
|
svc->srv_hpreq_ratio = val;
|
|
spin_unlock(&svc->srv_lock);
|
|
|
|
return count;
|
|
}
|
|
LUSTRE_RW_ATTR(high_priority_ratio);
|
|
|
|
static struct attribute *ptlrpc_svc_attrs[] = {
|
|
&lustre_attr_threads_min.attr,
|
|
&lustre_attr_threads_started.attr,
|
|
&lustre_attr_threads_max.attr,
|
|
&lustre_attr_high_priority_ratio.attr,
|
|
NULL,
|
|
};
|
|
|
|
static void ptlrpc_sysfs_svc_release(struct kobject *kobj)
|
|
{
|
|
struct ptlrpc_service *svc = container_of(kobj, struct ptlrpc_service,
|
|
srv_kobj);
|
|
|
|
complete(&svc->srv_kobj_unregister);
|
|
}
|
|
|
|
static struct kobj_type ptlrpc_svc_ktype = {
|
|
.default_attrs = ptlrpc_svc_attrs,
|
|
.sysfs_ops = &lustre_sysfs_ops,
|
|
.release = ptlrpc_sysfs_svc_release,
|
|
};
|
|
|
|
void ptlrpc_sysfs_unregister_service(struct ptlrpc_service *svc)
|
|
{
|
|
/* Let's see if we had a chance at initialization first */
|
|
if (svc->srv_kobj.kset) {
|
|
kobject_put(&svc->srv_kobj);
|
|
wait_for_completion(&svc->srv_kobj_unregister);
|
|
}
|
|
}
|
|
|
|
int ptlrpc_sysfs_register_service(struct kset *parent,
|
|
struct ptlrpc_service *svc)
|
|
{
|
|
int rc;
|
|
|
|
svc->srv_kobj.kset = parent;
|
|
init_completion(&svc->srv_kobj_unregister);
|
|
rc = kobject_init_and_add(&svc->srv_kobj, &ptlrpc_svc_ktype, NULL,
|
|
"%s", svc->srv_name);
|
|
|
|
return rc;
|
|
}
|
|
|
|
void ptlrpc_ldebugfs_register_service(struct dentry *entry,
|
|
struct ptlrpc_service *svc)
|
|
{
|
|
struct lprocfs_vars lproc_vars[] = {
|
|
{.name = "req_buffer_history_len",
|
|
.fops = &ptlrpc_lprocfs_req_history_len_fops,
|
|
.data = svc},
|
|
{.name = "req_buffer_history_max",
|
|
.fops = &ptlrpc_lprocfs_req_history_max_fops,
|
|
.data = svc},
|
|
{.name = "timeouts",
|
|
.fops = &ptlrpc_lprocfs_timeouts_fops,
|
|
.data = svc},
|
|
{.name = "nrs_policies",
|
|
.fops = &ptlrpc_lprocfs_nrs_fops,
|
|
.data = svc},
|
|
{NULL}
|
|
};
|
|
static const struct file_operations req_history_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = ptlrpc_lprocfs_svc_req_history_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = lprocfs_seq_release,
|
|
};
|
|
|
|
int rc;
|
|
|
|
ptlrpc_ldebugfs_register(entry, svc->srv_name,
|
|
"stats", &svc->srv_debugfs_entry,
|
|
&svc->srv_stats);
|
|
|
|
if (IS_ERR_OR_NULL(svc->srv_debugfs_entry))
|
|
return;
|
|
|
|
ldebugfs_add_vars(svc->srv_debugfs_entry, lproc_vars, NULL);
|
|
|
|
rc = ldebugfs_seq_create(svc->srv_debugfs_entry, "req_history",
|
|
0400, &req_history_fops, svc);
|
|
if (rc)
|
|
CWARN("Error adding the req_history file\n");
|
|
}
|
|
|
|
void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
|
|
{
|
|
ptlrpc_ldebugfs_register(obddev->obd_debugfs_entry, NULL, "stats",
|
|
&obddev->obd_svc_debugfs_entry,
|
|
&obddev->obd_svc_stats);
|
|
}
|
|
EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
|
|
|
|
void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount)
|
|
{
|
|
struct lprocfs_stats *svc_stats;
|
|
__u32 op = lustre_msg_get_opc(req->rq_reqmsg);
|
|
int opc = opcode_offset(op);
|
|
|
|
svc_stats = req->rq_import->imp_obd->obd_svc_stats;
|
|
if (!svc_stats || opc <= 0)
|
|
return;
|
|
LASSERT(opc < LUSTRE_MAX_OPCODES);
|
|
if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
|
|
lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, amount);
|
|
}
|
|
|
|
void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
|
|
{
|
|
struct lprocfs_stats *svc_stats;
|
|
int idx;
|
|
|
|
if (!req->rq_import)
|
|
return;
|
|
svc_stats = req->rq_import->imp_obd->obd_svc_stats;
|
|
if (!svc_stats)
|
|
return;
|
|
idx = lustre_msg_get_opc(req->rq_reqmsg);
|
|
switch (idx) {
|
|
case OST_READ:
|
|
idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
|
|
break;
|
|
case OST_WRITE:
|
|
idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
|
|
break;
|
|
default:
|
|
LASSERTF(0, "unsupported opcode %u\n", idx);
|
|
break;
|
|
}
|
|
|
|
lprocfs_counter_add(svc_stats, idx, bytes);
|
|
}
|
|
|
|
EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
|
|
|
|
void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
|
|
{
|
|
if (!IS_ERR_OR_NULL(svc->srv_debugfs_entry))
|
|
ldebugfs_remove(&svc->srv_debugfs_entry);
|
|
|
|
if (svc->srv_stats)
|
|
lprocfs_free_stats(&svc->srv_stats);
|
|
}
|
|
|
|
void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
|
|
{
|
|
if (!IS_ERR_OR_NULL(obd->obd_svc_debugfs_entry))
|
|
ldebugfs_remove(&obd->obd_svc_debugfs_entry);
|
|
|
|
if (obd->obd_svc_stats)
|
|
lprocfs_free_stats(&obd->obd_svc_stats);
|
|
}
|
|
EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
|
|
|
|
#undef BUFLEN
|
|
|
|
int lprocfs_wr_ping(struct file *file, const char __user *buffer,
|
|
size_t count, loff_t *off)
|
|
{
|
|
struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
|
|
struct ptlrpc_request *req;
|
|
int rc;
|
|
|
|
rc = lprocfs_climp_check(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
req = ptlrpc_prep_ping(obd->u.cli.cl_import);
|
|
up_read(&obd->u.cli.cl_sem);
|
|
if (!req)
|
|
return -ENOMEM;
|
|
|
|
req->rq_send_state = LUSTRE_IMP_FULL;
|
|
|
|
rc = ptlrpc_queue_wait(req);
|
|
|
|
ptlrpc_req_finished(req);
|
|
if (rc >= 0)
|
|
return count;
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(lprocfs_wr_ping);
|
|
|
|
/* Write the connection UUID to this file to attempt to connect to that node.
|
|
* The connection UUID is a node's primary NID. For example,
|
|
* "echo connection=192.168.0.1@tcp0::instance > .../import".
|
|
*/
|
|
int lprocfs_wr_import(struct file *file, const char __user *buffer,
|
|
size_t count, loff_t *off)
|
|
{
|
|
struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
|
|
struct obd_import *imp = obd->u.cli.cl_import;
|
|
char *kbuf = NULL;
|
|
char *uuid;
|
|
char *ptr;
|
|
int do_reconn = 1;
|
|
const char prefix[] = "connection=";
|
|
const int prefix_len = sizeof(prefix) - 1;
|
|
|
|
if (count > PAGE_SIZE - 1 || count <= prefix_len)
|
|
return -EINVAL;
|
|
|
|
kbuf = kzalloc(count + 1, GFP_NOFS);
|
|
if (!kbuf)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(kbuf, buffer, count)) {
|
|
count = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
kbuf[count] = 0;
|
|
|
|
/* only support connection=uuid::instance now */
|
|
if (strncmp(prefix, kbuf, prefix_len) != 0) {
|
|
count = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
uuid = kbuf + prefix_len;
|
|
ptr = strstr(uuid, "::");
|
|
if (ptr) {
|
|
__u32 inst;
|
|
char *endptr;
|
|
|
|
*ptr = 0;
|
|
do_reconn = 0;
|
|
ptr += strlen("::");
|
|
inst = simple_strtoul(ptr, &endptr, 10);
|
|
if (*endptr) {
|
|
CERROR("config: wrong instance # %s\n", ptr);
|
|
} else if (inst != imp->imp_connect_data.ocd_instance) {
|
|
CDEBUG(D_INFO, "IR: %s is connecting to an obsoleted target(%u/%u), reconnecting...\n",
|
|
imp->imp_obd->obd_name,
|
|
imp->imp_connect_data.ocd_instance, inst);
|
|
do_reconn = 1;
|
|
} else {
|
|
CDEBUG(D_INFO, "IR: %s has already been connecting to new target(%u)\n",
|
|
imp->imp_obd->obd_name, inst);
|
|
}
|
|
}
|
|
|
|
if (do_reconn)
|
|
ptlrpc_recover_import(imp, uuid, 1);
|
|
|
|
out:
|
|
kfree(kbuf);
|
|
return count;
|
|
}
|
|
EXPORT_SYMBOL(lprocfs_wr_import);
|
|
|
|
int lprocfs_rd_pinger_recov(struct seq_file *m, void *n)
|
|
{
|
|
struct obd_device *obd = m->private;
|
|
struct obd_import *imp = obd->u.cli.cl_import;
|
|
int rc;
|
|
|
|
rc = lprocfs_climp_check(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
seq_printf(m, "%d\n", !imp->imp_no_pinger_recover);
|
|
up_read(&obd->u.cli.cl_sem);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(lprocfs_rd_pinger_recov);
|
|
|
|
int lprocfs_wr_pinger_recov(struct file *file, const char __user *buffer,
|
|
size_t count, loff_t *off)
|
|
{
|
|
struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
|
|
struct client_obd *cli = &obd->u.cli;
|
|
struct obd_import *imp = cli->cl_import;
|
|
int rc, val;
|
|
|
|
rc = lprocfs_write_helper(buffer, count, &val);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
if (val != 0 && val != 1)
|
|
return -ERANGE;
|
|
|
|
rc = lprocfs_climp_check(obd);
|
|
if (rc)
|
|
return rc;
|
|
|
|
spin_lock(&imp->imp_lock);
|
|
imp->imp_no_pinger_recover = !val;
|
|
spin_unlock(&imp->imp_lock);
|
|
up_read(&obd->u.cli.cl_sem);
|
|
|
|
return count;
|
|
|
|
}
|
|
EXPORT_SYMBOL(lprocfs_wr_pinger_recov);
|