blktrace: add zoned block commands to blk_fill_rwbs

Add zoned block commands to blk_fill_rwbs:

- ZONE APPEND will be decoded as 'ZA'
- ZONE RESET will be decoded as 'ZR'
- ZONE RESET ALL will be decoded as 'ZRA'
- ZONE FINISH will be decoded as 'ZF'
- ZONE OPEN will be decoded as 'ZO'
- ZONE CLOSE will be decoded as 'ZC'

Reviewed-by: Chaitanya Kulkarni <[email protected]>
Signed-off-by: Johannes Thumshirn <[email protected]>

Author: morbidrsa

include/trace/events/block.h

@@ -11,7 +11,7 @@
 #include <linux/tracepoint.h>
 #include <uapi/linux/ioprio.h>
 
-#define RWBS_LEN	9
+#define RWBS_LEN	10
 
 #define IOPRIO_CLASS_STRINGS \
 	{ IOPRIO_CLASS_NONE,	"none" }, \

kernel/trace/blktrace.c

@@ -1875,6 +1875,29 @@ void blk_fill_rwbs(char *rwbs, blk_opf_t opf)
 	case REQ_OP_READ:
 		rwbs[i++] = 'R';
 		break;
+	case REQ_OP_ZONE_APPEND:
+		rwbs[i++] = 'Z';
+		rwbs[i++] = 'A';
+		break;
+	case REQ_OP_ZONE_RESET:
+	case REQ_OP_ZONE_RESET_ALL:
+		rwbs[i++] = 'Z';
+		rwbs[i++] = 'R';
+		if ((opf & REQ_OP_MASK) == REQ_OP_ZONE_RESET_ALL)
+			rwbs[i++] = 'A';
+		break;
+	case REQ_OP_ZONE_FINISH:
+		rwbs[i++] = 'Z';
+		rwbs[i++] = 'F';
+		break;
+	case REQ_OP_ZONE_OPEN:
+		rwbs[i++] = 'Z';
+		rwbs[i++] = 'O';
+		break;
+	case REQ_OP_ZONE_CLOSE:
+		rwbs[i++] = 'Z';
+		rwbs[i++] = 'C';
+		break;
 	default:
 		rwbs[i++] = 'N';
 	}
@@ -1890,6 +1913,8 @@ void blk_fill_rwbs(char *rwbs, blk_opf_t opf)
 	if (opf & REQ_ATOMIC)
 		rwbs[i++] = 'U';
 
+	WARN_ON_ONCE(i >= RWBS_LEN);
+
 	rwbs[i] = '\0';
 }
 EXPORT_SYMBOL_GPL(blk_fill_rwbs);