linux-imx

// SPDX-License-Identifier: GPL-2.0

#define pr_fmt(fmt) "drbd debugfs: " fmt

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/debugfs.h>

#include <linux/seq_file.h>

#include <linux/stat.h>

#include <linux/jiffies.h>

#include <linux/list.h>

​

#include "drbd_int.h"

#include "drbd_req.h"

#include "drbd_debugfs.h"

​

​

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

 * Whenever you change the file format, remember to bump the version. *

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

​

static struct dentry *drbd_debugfs_root;

static struct dentry *drbd_debugfs_version;

static struct dentry *drbd_debugfs_resources;

static struct dentry *drbd_debugfs_minors;

​

static void seq_print_age_or_dash(struct seq_file *m, bool valid, unsigned long dt)

{

    if (valid)

        seq_printf(m, "\t%d", jiffies_to_msecs(dt));

    else

        seq_printf(m, "\t-");

}

​

static void __seq_print_rq_state_bit(struct seq_file *m,

    bool is_set, char *sep, const char *set_name, const char *unset_name)

{

    if (is_set && set_name) {

        seq_putc(m, *sep);

        seq_puts(m, set_name);

        *sep = '|';

    } else if (!is_set && unset_name) {

        seq_putc(m, *sep);

        seq_puts(m, unset_name);

        *sep = '|';

    }

}

​

static void seq_print_rq_state_bit(struct seq_file *m,

    bool is_set, char *sep, const char *set_name)

{

    __seq_print_rq_state_bit(m, is_set, sep, set_name, NULL);

}

​

/* pretty print enum drbd_req_state_bits req->rq_state */

static void seq_print_request_state(struct seq_file *m, struct drbd_request *req)

{

    unsigned int s = req->rq_state;

    char sep = ' ';

    seq_printf(m, "\t0x%08x", s);

    seq_printf(m, "\tmaster: %s", req->master_bio ? "pending" : "completed");

​

    /* RQ_WRITE ignored, already reported */

    seq_puts(m, "\tlocal:");

    seq_print_rq_state_bit(m, s & RQ_IN_ACT_LOG, &sep, "in-AL");

    seq_print_rq_state_bit(m, s & RQ_POSTPONED, &sep, "postponed");

    seq_print_rq_state_bit(m, s & RQ_COMPLETION_SUSP, &sep, "suspended");

    sep = ' ';

    seq_print_rq_state_bit(m, s & RQ_LOCAL_PENDING, &sep, "pending");

    seq_print_rq_state_bit(m, s & RQ_LOCAL_COMPLETED, &sep, "completed");

    seq_print_rq_state_bit(m, s & RQ_LOCAL_ABORTED, &sep, "aborted");

    seq_print_rq_state_bit(m, s & RQ_LOCAL_OK, &sep, "ok");

    if (sep == ' ')

        seq_puts(m, " -");

​

    /* for_each_connection ... */

    seq_printf(m, "\tnet:");

    sep = ' ';

    seq_print_rq_state_bit(m, s & RQ_NET_PENDING, &sep, "pending");

    seq_print_rq_state_bit(m, s & RQ_NET_QUEUED, &sep, "queued");

    seq_print_rq_state_bit(m, s & RQ_NET_SENT, &sep, "sent");

    seq_print_rq_state_bit(m, s & RQ_NET_DONE, &sep, "done");

    seq_print_rq_state_bit(m, s & RQ_NET_SIS, &sep, "sis");

    seq_print_rq_state_bit(m, s & RQ_NET_OK, &sep, "ok");

    if (sep == ' ')

        seq_puts(m, " -");

​

    seq_printf(m, " :");

    sep = ' ';

    seq_print_rq_state_bit(m, s & RQ_EXP_RECEIVE_ACK, &sep, "B");

    seq_print_rq_state_bit(m, s & RQ_EXP_WRITE_ACK, &sep, "C");

    seq_print_rq_state_bit(m, s & RQ_EXP_BARR_ACK, &sep, "barr");

    if (sep == ' ')

        seq_puts(m, " -");