lproc_mdc.c

lustre 1.6.5 source code

/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
 * vim:expandtab:shiftwidth=8:tabstop=8:
 *
 *  Copyright (C) 2002 Cluster File Systems, Inc.
 *
 *   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.
 *
 */
#define DEBUG_SUBSYSTEM S_CLASS

#include <linux/version.h>
#include <linux/vfs.h>
#include <obd_class.h>
#include <lprocfs_status.h>

#ifdef LPROCFS

static int mdc_rd_max_rpcs_in_flight(char *page, char **start, off_t off,
                                     int count, int *eof, void *data)
{
        struct obd_device *dev = data;
        struct client_obd *cli = &dev->u.cli;
        int rc;

        spin_lock(&cli->cl_loi_list_lock);
        rc = snprintf(page, count, "%u\n", cli->cl_max_rpcs_in_flight);
        spin_unlock(&cli->cl_loi_list_lock);
        return rc;
}

static int mdc_wr_max_rpcs_in_flight(struct file *file, const char *buffer,
                                     unsigned long count, void *data)
{
        struct obd_device *dev = data;
        struct client_obd *cli = &dev->u.cli;
        int val, rc;

        rc = lprocfs_write_helper(buffer, count, &val);
        if (rc)
                return rc;

        if (val < 1 || val > MDC_MAX_RIF_MAX)
                return -ERANGE;

        spin_lock(&cli->cl_loi_list_lock);
        cli->cl_max_rpcs_in_flight = val;
        spin_unlock(&cli->cl_loi_list_lock);

        return count;
}
static struct lprocfs_vars lprocfs_mdc_obd_vars[] = {
        { "uuid",            lprocfs_rd_uuid,        0, 0 },
        { "ping",            0, lprocfs_wr_ping,        0 },
        { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
        { "blocksize",       lprocfs_rd_blksize,     0, 0 },
        { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
        { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
        { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
        { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
        { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
        /*{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },*/
        { "mds_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
        { "mds_conn_uuid",   lprocfs_rd_conn_uuid,   0, 0 },
        { "max_rpcs_in_flight", mdc_rd_max_rpcs_in_flight,
                                mdc_wr_max_rpcs_in_flight, 0 },
        { "timeouts",        lprocfs_rd_timeouts,    0, 0 },
        { 0 }
};

static struct lprocfs_vars lprocfs_mdc_module_vars[] = {
        { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
        { 0 }
};

void lprocfs_mdc_init_vars(struct lprocfs_static_vars *lvars)
{
    lvars->module_vars  = lprocfs_mdc_module_vars;
    lvars->obd_vars     = lprocfs_mdc_obd_vars;
}
#endif /* LPROCFS */