scsi: sd: Remove zone write locking
[sfrench/cifs-2.6.git] / drivers / scsi / scsi_debugfs.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/seq_file.h>
3 #include <scsi/scsi_cmnd.h>
4 #include <scsi/scsi_dbg.h>
5 #include "scsi_debugfs.h"
6
7 #define SCSI_CMD_FLAG_NAME(name) [ilog2(SCMD_##name)] = #name
8 static const char *const scsi_cmd_flags[] = {
9         SCSI_CMD_FLAG_NAME(TAGGED),
10         SCSI_CMD_FLAG_NAME(UNCHECKED_ISA_DMA),
11         SCSI_CMD_FLAG_NAME(INITIALIZED),
12 };
13 #undef SCSI_CMD_FLAG_NAME
14
15 static int scsi_flags_show(struct seq_file *m, const unsigned long flags,
16                            const char *const *flag_name, int flag_name_count)
17 {
18         bool sep = false;
19         int i;
20
21         for (i = 0; i < sizeof(flags) * BITS_PER_BYTE; i++) {
22                 if (!(flags & BIT(i)))
23                         continue;
24                 if (sep)
25                         seq_puts(m, "|");
26                 sep = true;
27                 if (i < flag_name_count && flag_name[i])
28                         seq_puts(m, flag_name[i]);
29                 else
30                         seq_printf(m, "%d", i);
31         }
32         return 0;
33 }
34
35 void scsi_show_rq(struct seq_file *m, struct request *rq)
36 {
37         struct scsi_cmnd *cmd = container_of(scsi_req(rq), typeof(*cmd), req);
38         int alloc_ms = jiffies_to_msecs(jiffies - cmd->jiffies_at_alloc);
39         int timeout_ms = jiffies_to_msecs(rq->timeout);
40         const u8 *const cdb = READ_ONCE(cmd->cmnd);
41         char buf[80] = "(?)";
42
43         if (cdb)
44                 __scsi_format_command(buf, sizeof(buf), cdb, cmd->cmd_len);
45         seq_printf(m, ", .cmd=%s, .retries=%d, .result = %#x, .flags=", buf,
46                    cmd->retries, cmd->result);
47         scsi_flags_show(m, cmd->flags, scsi_cmd_flags,
48                         ARRAY_SIZE(scsi_cmd_flags));
49         seq_printf(m, ", .timeout=%d.%03d, allocated %d.%03d s ago",
50                    timeout_ms / 1000, timeout_ms % 1000,
51                    alloc_ms / 1000, alloc_ms % 1000);
52 }