add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/scsi/scsi_logging.c
..
..
@@ -1,10 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * scsi_logging.c
3
4
  *
4
5
  * Copyright (C) 2014 SUSE Linux Products GmbH
5
6
  * Copyright (C) 2014 Hannes Reinecke <hare@suse.de>
6
- *
7
- * This file is released under the GPLv2
8
7
  */
9
8
 
10
9
 #include <linux/kernel.h>
..
..
@@ -206,13 +205,9 @@
206
205
 		/* Print opcode in one line and use separate lines for CDB */
207
206
 		off += scnprintf(logbuf + off, logbuf_len - off, "\n");
208
207
 		dev_printk(KERN_INFO, &cmd->device->sdev_gendev, "%s", logbuf);
209
-		scsi_log_release_buffer(logbuf);
210
208
 		for (k = 0; k < cmd->cmd_len; k += 16) {
211
209
 			size_t linelen = min(cmd->cmd_len - k, 16);
212
210
 
213
-			logbuf = scsi_log_reserve_buffer(&logbuf_len);
214
-			if (!logbuf)
215
-				break;
216
211
 			off = sdev_format_header(logbuf, logbuf_len,
217
212
 						 scmd_name(cmd),
218
213
 						 cmd->request->tag);
..
..
@@ -225,9 +220,8 @@
225
220
 			}
226
221
 			dev_printk(KERN_INFO, &cmd->device->sdev_gendev, "%s",
227
222
 				   logbuf);
228
-			scsi_log_release_buffer(logbuf);
229
223
 		}
230
-		return;
224
+		goto out;
231
225
 	}
232
226
 	if (!WARN_ON(off > logbuf_len - 49)) {
233
227
 		off += scnprintf(logbuf + off, logbuf_len - off, " ");
..
..
@@ -237,6 +231,7 @@
237
231
 	}
238
232
 out_printk:
239
233
 	dev_printk(KERN_INFO, &cmd->device->sdev_gendev, "%s", logbuf);
234
+out:
240
235
 	scsi_log_release_buffer(logbuf);
241
236
 }
242
237
 EXPORT_SYMBOL(scsi_print_command);
..
..
@@ -391,6 +386,7 @@
391
386
 	const char *mlret_string = scsi_mlreturn_string(disposition);
392
387
 	const char *hb_string = scsi_hostbyte_string(cmd->result);
393
388
 	const char *db_string = scsi_driverbyte_string(cmd->result);
389
+	unsigned long cmd_age = (jiffies - cmd->jiffies_at_alloc) / HZ;
394
390
 
395
391
 	logbuf = scsi_log_reserve_buffer(&logbuf_len);
396
392
 	if (!logbuf)
..
..
@@ -432,10 +428,15 @@
432
428
 
433
429
 	if (db_string)
434
430
 		off += scnprintf(logbuf + off, logbuf_len - off,
435
-				 "driverbyte=%s", db_string);
431
+				 "driverbyte=%s ", db_string);
436
432
 	else
437
433
 		off += scnprintf(logbuf + off, logbuf_len - off,
438
-				 "driverbyte=0x%02x", driver_byte(cmd->result));
434
+				 "driverbyte=0x%02x ",
435
+				 driver_byte(cmd->result));
436
+
437
+	off += scnprintf(logbuf + off, logbuf_len - off,
438
+			 "cmd_age=%lus", cmd_age);
439
+
439
440
 out_printk:
440
441
 	dev_printk(KERN_INFO, &cmd->device->sdev_gendev, "%s", logbuf);
441
442
 	scsi_log_release_buffer(logbuf);