// 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, " -");
seq_printf(m, "\n");
}
static void seq_print_one_request(struct seq_file *m, struct drbd_request *req, unsigned long now)
{
/* change anything here, fixup header below! */
unsigned int s = req->rq_state;
#define RQ_HDR_1 "epoch\tsector\tsize\trw"
seq_printf(m, "0x%x\t%llu\t%u\t%s",
req->epoch,
(unsigned long long)req->i.sector, req->