/* -*- MODE: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
 * vim:expandtab:shiftwidth=8:tabstop=8:
 *
 *  cmm/cmm_lproc.c
 *  CMM lprocfs stuff
 *
 *  Copyright (C) 2006 Cluster File Systems, Inc.
 *   Author: Wang Di      <wangdi@clusterfs.com>
 *   Author: Yury Umanets <umka@clusterfs.com>
 *
 *   This file is part of the Lustre file system, http://www.lustre.org
 *   Lustre is a trademark of Cluster File Systems, Inc.
 *
 *   You may have signed or agreed to another license before downloading
 *   this software.  If so, you are bound by the terms and conditions
 *   of that agreement, and the following does not apply to you.  See the
 *   LICENSE file included with this distribution for more information.
 *
 *   If you did not agree to a different license, then this copy of Lustre
 *   is open source software; you can redistribute it and/or modify it
 *   under the terms of version 2 of the GNU General Public License as
 *   published by the Free Software Foundation.
 *
 *   In either case, Lustre 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
 *   license text for more details.
 */
#ifndef EXPORT_SYMTAB
# define EXPORT_SYMTAB
#endif
#define DEBUG_SUBSYSTEM S_MDS

#include <linux/module.h>
#include <obd.h>
#include <obd_class.h>
#include <lustre_ver.h>
#include <obd_support.h>
#include <lprocfs_status.h>
#include <lu_time.h>

#include <lustre/lustre_idl.h>

#include "cmm_internal.h"

static const char *cmm_counter_names[LPROC_CMM_NR] = {
        [LPROC_CMM_SPLIT_CHECK] = "split_check",
        [LPROC_CMM_SPLIT]       = "split",
        [LPROC_CMM_LOOKUP]      = "lookup",
        [LPROC_CMM_CREATE]      = "create"
};

int cmm_procfs_init(struct cmm_device *cmm, const char *name)
{
        struct lu_device    *ld = &cmm->cmm_md_dev.md_lu_dev;
        struct obd_type     *type;
        int                  rc;
        ENTRY;

        type = ld->ld_type->ldt_obd_type;

        LASSERT(name != NULL);
        LASSERT(type != NULL);

        /* Find the type procroot and add the proc entry for this device. */
        cmm->cmm_proc_entry = lprocfs_register(name, type->typ_procroot,
                                               NULL, NULL);
        if (IS_ERR(cmm->cmm_proc_entry)) {
                rc = PTR_ERR(cmm->cmm_proc_entry);
                CERROR("Error %d setting up lprocfs for %s\n",
                       rc, name);
                cmm->cmm_proc_entry = NULL;
                GOTO(out, rc);
        }

        rc = lu_time_init(&cmm->cmm_stats,
                          cmm->cmm_proc_entry,
                          cmm_counter_names, ARRAY_SIZE(cmm_counter_names));

        EXIT;
out:
        if (rc)
               cmm_procfs_fini(cmm);
	return rc;
}

int cmm_procfs_fini(struct cmm_device *cmm)
{
        if (cmm->cmm_stats)
                lu_time_fini(&cmm->cmm_stats);

        if (cmm->cmm_proc_entry) {
                 lprocfs_remove(&cmm->cmm_proc_entry);
                 cmm->cmm_proc_entry = NULL;
        }
        RETURN(0);
}

void cmm_lprocfs_time_start(const struct lu_env *env)
{
        lu_lprocfs_time_start(env);
}

void cmm_lprocfs_time_end(const struct lu_env *env, struct cmm_device *cmm,
			  int idx)
{
        lu_lprocfs_time_end(env, cmm->cmm_stats, idx);
}