linux-imx

/******************************************************************************

*******************************************************************************

**

**  Copyright (C) 2005-2009 Red Hat, Inc.  All rights reserved.

**

**  This copyrighted material is made available to anyone wishing to use,

**  modify, copy, or redistribute it subject to the terms and conditions

**  of the GNU General Public License v.2.

**

*******************************************************************************

******************************************************************************/

​

#include <linux/pagemap.h>

#include <linux/seq_file.h>

#include <linux/init.h>

#include <linux/ctype.h>

#include <linux/debugfs.h>

#include <linux/slab.h>

​

#include "dlm_internal.h"

#include "lock.h"

​

#define DLM_DEBUG_BUF_LEN 4096

static char debug_buf[DLM_DEBUG_BUF_LEN];

static struct mutex debug_buf_lock;

​

static struct dentry *dlm_root;

​

static char *print_lockmode(int mode)

{

    switch (mode) {

    case DLM_LOCK_IV:

        return "--";

    case DLM_LOCK_NL:

        return "NL";

    case DLM_LOCK_CR:

        return "CR";

    case DLM_LOCK_CW:

        return "CW";

    case DLM_LOCK_PR:

        return "PR";

    case DLM_LOCK_PW:

        return "PW";

    case DLM_LOCK_EX:

        return "EX";

    default:

        return "??";

    }

}

​

static void print_format1_lock(struct seq_file *s, struct dlm_lkb *lkb,

                   struct dlm_rsb *res)

{

    seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_grmode));

​

    if (lkb->lkb_status == DLM_LKSTS_CONVERT ||

        lkb->lkb_status == DLM_LKSTS_WAITING)

        seq_printf(s, " (%s)", print_lockmode(lkb->lkb_rqmode));

​

    if (lkb->lkb_nodeid) {

        if (lkb->lkb_nodeid != res->res_nodeid)

            seq_printf(s, " Remote: %3d %08x", lkb->lkb_nodeid,

                   lkb->lkb_remid);

        else

            seq_printf(s, " Master:     %08x", lkb->lkb_remid);

    }

​

    if (lkb->lkb_wait_type)

        seq_printf(s, " wait_type: %d", lkb->lkb_wait_type);

​

    seq_putc(s, '\n');

}

​

static void print_format1(struct dlm_rsb *res, struct seq_file *s)

{

    struct dlm_lkb *lkb;

    int i, lvblen = res->res_ls->ls_lvblen, recover_list, root_list;

​

    lock_rsb(res);

​

    seq_printf(s, "\nResource %p Name (len=%d) \"", res, res->res_length);

​

    for (i = 0; i < res->res_length; i++) {

        if (isprint(res->res_name[i]))

            seq_printf(s, "%c", res->res_name[i]);

        else

            seq_printf(s, "%c", '.');

    }

​

    if (res->res_nodeid > 0)

        seq_printf(s, "\"\nLocal Copy, Master is node %d\n",

               res->res_nodeid);