[SCSI] zfcp: replace current ERP logging with a more convenient version

The current number based id ERP logging is replaced by a string
based tag version. The benefit is an easier location of the code in
question and the removal of the lengthy array referencing the
individual messages.
The string (7 bytes) based version does not use more space since those
bytes were "used" anyway due to the alignment of the structure.
The encoding of the 7 byte string is as follows
        [0-1] = filename
        [2-5] = task/function
        [6]   = section
Due to the character of this string (fixed length) a string
termination is not required here.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

11 files changed, 215 insertions, 356 deletions

diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 1e16ab58b24..69a31187e54 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -421,7 +421,8 @@ int zfcp_status_read_refill(struct zfcp_adapter *adapter)
 	while (atomic_read(&adapter->stat_miss) > 0)
 		if (zfcp_fsf_status_read(adapter)) {
 			if (atomic_read(&adapter->stat_miss) >= 16) {
-				zfcp_erp_adapter_reopen(adapter, 0, 103, NULL);
+				zfcp_erp_adapter_reopen(adapter, 0, "axsref1",
+							NULL);
 				return 1;
 			}
 			break;
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index 683ac4ed5e5..3aeef289fe7 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -109,10 +109,10 @@ static int zfcp_ccw_set_online(struct ccw_device *ccw_device)
 	BUG_ON(!zfcp_reqlist_isempty(adapter));
 	adapter->req_no = 0;
 
-	zfcp_erp_modify_adapter_status(adapter, 10, NULL,
+	zfcp_erp_modify_adapter_status(adapter, "ccsonl1", NULL,
 				       ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
-	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 85,
-				NULL);
+	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
+				"ccsonl2", NULL);
 	zfcp_erp_wait(adapter);
 	up(&zfcp_data.config_sema);
 	flush_work(&adapter->scan_work);
@@ -136,7 +136,7 @@ static int zfcp_ccw_set_offline(struct ccw_device *ccw_device)
 
 	down(&zfcp_data.config_sema);
 	adapter = dev_get_drvdata(&ccw_device->dev);
-	zfcp_erp_adapter_shutdown(adapter, 0, 86, NULL);
+	zfcp_erp_adapter_shutdown(adapter, 0, "ccsoff1", NULL);
 	zfcp_erp_wait(adapter);
 	zfcp_erp_thread_kill(adapter);
 	up(&zfcp_data.config_sema);
@@ -159,21 +159,21 @@ static int zfcp_ccw_notify(struct ccw_device *ccw_device, int event)
 	case CIO_GONE:
 		dev_warn(&adapter->ccw_device->dev,
 			 "The FCP device has been detached\n");
-		zfcp_erp_adapter_shutdown(adapter, 0, 87, NULL);
+		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti1", NULL);
 		break;
 	case CIO_NO_PATH:
 		dev_warn(&adapter->ccw_device->dev,
 			 "The CHPID for the FCP device is offline\n");
-		zfcp_erp_adapter_shutdown(adapter, 0, 88, NULL);
+		zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti2", NULL);
 		break;
 	case CIO_OPER:
 		dev_info(&adapter->ccw_device->dev,
 			 "The FCP device is operational again\n");
-		zfcp_erp_modify_adapter_status(adapter, 11, NULL,
+		zfcp_erp_modify_adapter_status(adapter, "ccnoti3", NULL,
 					       ZFCP_STATUS_COMMON_RUNNING,
 					       ZFCP_SET);
 		zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
-					89, NULL);
+					"ccnoti4", NULL);
 		break;
 	}
 	return 1;
@@ -189,7 +189,7 @@ static void zfcp_ccw_shutdown(struct ccw_device *cdev)
 
 	down(&zfcp_data.config_sema);
 	adapter = dev_get_drvdata(&cdev->dev);
-	zfcp_erp_adapter_shutdown(adapter, 0, 90, NULL);
+	zfcp_erp_adapter_shutdown(adapter, 0, "ccshut1", NULL);
 	zfcp_erp_wait(adapter);
 	up(&zfcp_data.config_sema);
 }
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index ab843f23d42..0a1a5dd8d01 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -490,172 +490,17 @@ static const char *zfcp_rec_dbf_tags[] = {
 	[ZFCP_REC_DBF_ID_ACTION] = "action",
 };
 
-static const char *zfcp_rec_dbf_ids[] = {
-	[1]	= "new",
-	[2]	= "ready",
-	[3]	= "kill",
-	[4]	= "down sleep",
-	[5]	= "down wakeup",
-	[6]	= "down sleep ecd",
-	[7]	= "down wakeup ecd",
-	[8]	= "down sleep epd",
-	[9]	= "down wakeup epd",
-	[10]	= "online",
-	[11]	= "operational",
-	[12]	= "scsi slave destroy",
-	[13]	= "propagate failed adapter",
-	[14]	= "propagate failed port",
-	[15]	= "block adapter",
-	[16]	= "unblock adapter",
-	[17]	= "block port",
-	[18]	= "unblock port",
-	[19]	= "block unit",
-	[20]	= "unblock unit",
-	[21]	= "unit recovery failed",
-	[22]	= "port recovery failed",
-	[23]	= "adapter recovery failed",
-	[24]	= "qdio queues down",
-	[25]	= "p2p failed",
-	[26]	= "nameserver lookup failed",
-	[27]	= "nameserver port failed",
-	[28]	= "link up",
-	[29]	= "link down",
-	[30]	= "link up status read",
-	[31]	= "open port failed",
-	[32]	= "",
-	[33]	= "close port",
-	[34]	= "open unit failed",
-	[35]	= "exclusive open unit failed",
-	[36]	= "shared open unit failed",
-	[37]	= "link down",
-	[38]	= "link down status read no link",
-	[39]	= "link down status read fdisc login",
-	[40]	= "link down status read firmware update",
-	[41]	= "link down status read unknown reason",
-	[42]	= "link down ecd incomplete",
-	[43]	= "link down epd incomplete",
-	[44]	= "sysfs adapter recovery",
-	[45]	= "sysfs port recovery",
-	[46]	= "sysfs unit recovery",
-	[47]	= "port boxed abort",
-	[48]	= "unit boxed abort",
-	[49]	= "port boxed ct",
-	[50]	= "port boxed close physical",
-	[51]	= "port boxed open unit",
-	[52]	= "port boxed close unit",
-	[53]	= "port boxed fcp",
-	[54]	= "unit boxed fcp",
-	[55]	= "port access denied",
-	[56]	= "",
-	[57]	= "",
-	[58]	= "",
-	[59]	= "unit access denied",
-	[60]	= "shared unit access denied open unit",
-	[61]	= "",
-	[62]	= "request timeout",
-	[63]	= "adisc link test reject or timeout",
-	[64]	= "adisc link test d_id changed",
-	[65]	= "adisc link test failed",
-	[66]	= "recovery out of memory",
-	[67]	= "adapter recovery repeated after state change",
-	[68]	= "port recovery repeated after state change",
-	[69]	= "unit recovery repeated after state change",
-	[70]	= "port recovery follow-up after successful adapter recovery",
-	[71]	= "adapter recovery escalation after failed adapter recovery",
-	[72]	= "port recovery follow-up after successful physical port "
-		  "recovery",
-	[73]	= "adapter recovery escalation after failed physical port "
-		  "recovery",
-	[74]	= "unit recovery follow-up after successful port recovery",
-	[75]	= "physical port recovery escalation after failed port "
-		  "recovery",
-	[76]	= "port recovery escalation after failed unit recovery",
-	[77]	= "",
-	[78]	= "duplicate request id",
-	[79]	= "link down",
-	[80]	= "exclusive read-only unit access unsupported",
-	[81]	= "shared read-write unit access unsupported",
-	[82]	= "incoming rscn",
-	[83]	= "incoming wwpn",
-	[84]	= "wka port handle not valid close port",
-	[85]	= "online",
-	[86]	= "offline",
-	[87]	= "ccw device gone",
-	[88]	= "ccw device no path",
-	[89]	= "ccw device operational",
-	[90]	= "ccw device shutdown",
-	[91]	= "sysfs port addition",
-	[92]	= "sysfs port removal",
-	[93]	= "sysfs adapter recovery",
-	[94]	= "sysfs unit addition",
-	[95]	= "sysfs unit removal",
-	[96]	= "sysfs port recovery",
-	[97]	= "sysfs unit recovery",
-	[98]	= "sequence number mismatch",
-	[99]	= "link up",
-	[100]	= "error state",
-	[101]	= "status read physical port closed",
-	[102]	= "link up status read",
-	[103]	= "too many failed status read buffers",
-	[104]	= "port handle not valid abort",
-	[105]	= "lun handle not valid abort",
-	[106]	= "port handle not valid ct",
-	[107]	= "port handle not valid close port",
-	[108]	= "port handle not valid close physical port",
-	[109]	= "port handle not valid open unit",
-	[110]	= "port handle not valid close unit",
-	[111]	= "lun handle not valid close unit",
-	[112]	= "port handle not valid fcp",
-	[113]	= "lun handle not valid fcp",
-	[114]	= "handle mismatch fcp",
-	[115]	= "lun not valid fcp",
-	[116]	= "qdio send failed",
-	[117]	= "version mismatch",
-	[118]	= "incompatible qtcb type",
-	[119]	= "unknown protocol status",
-	[120]	= "unknown fsf command",
-	[121]	= "no recommendation for status qualifier",
-	[122]	= "",
-	[123]	= "fc service class not supported",
-	[124]	= "",
-	[125]	= "need newer zfcp",
-	[126]	= "need newer microcode",
-	[127]	= "arbitrated loop not supported",
-	[128]	= "",
-	[129]	= "qtcb size mismatch",
-	[130]	= "unknown fsf status ecd",
-	[131]	= "fcp request too big",
-	[132]	= "",
-	[133]	= "data direction not valid fcp",
-	[134]	= "command length not valid fcp",
-	[135]	= "status read act update",
-	[136]	= "status read cfdc update",
-	[137]	= "hbaapi port open",
-	[138]	= "hbaapi unit open",
-	[139]	= "hbaapi unit shutdown",
-	[140]	= "qdio error outbound",
-	[141]	= "scsi host reset",
-	[142]	= "dismissing fsf request for recovery action",
-	[143]	= "recovery action timed out",
-	[144]	= "recovery action gone",
-	[145]	= "recovery action being processed",
-	[146]	= "recovery action ready for next step",
-	[147]	= "qdio error inbound",
-	[148]   = "nameserver needed for port scan",
-	[149]   = "port scan",
-	[150]	= "ptp attach",
-	[151]   = "port validation failed",
-};
-
 static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
 				    char *buf, const char *_rec)
 {
 	struct zfcp_rec_dbf_record *r = (struct zfcp_rec_dbf_record *)_rec;
 	char *p = buf;
+	char hint[ZFCP_DBF_ID_SIZE + 1];
 
+	memcpy(hint, r->id2, ZFCP_DBF_ID_SIZE);
+	hint[ZFCP_DBF_ID_SIZE] = 0;
 	zfcp_dbf_outs(&p, "tag", zfcp_rec_dbf_tags[r->id]);
-	zfcp_dbf_outs(&p, "hint", zfcp_rec_dbf_ids[r->id2]);
-	zfcp_dbf_out(&p, "id", "%d", r->id2);
+	zfcp_dbf_outs(&p, "hint", hint);
 	switch (r->id) {
 	case ZFCP_REC_DBF_ID_THREAD:
 		zfcp_dbf_out(&p, "total", "%d", r->u.thread.total);
@@ -707,7 +552,7 @@ static struct debug_view zfcp_rec_dbf_view = {
  * @adapter: adapter
  * This function assumes that the caller is holding erp_lock.
  */
-void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter)
+void zfcp_rec_dbf_event_thread(char *id2, struct zfcp_adapter *adapter)
 {
 	struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
 	unsigned long flags = 0;
@@ -723,7 +568,7 @@ void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter)
 	spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
 	memset(r, 0, sizeof(*r));
 	r->id = ZFCP_REC_DBF_ID_THREAD;
-	r->id2 = id2;
+	memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
 	r->u.thread.total = total;
 	r->u.thread.ready = ready;
 	r->u.thread.running = running;
@@ -737,7 +582,7 @@ void zfcp_rec_dbf_event_thread(u8 id2, struct zfcp_adapter *adapter)
  * @adapter: adapter
  * This function assumes that the caller does not hold erp_lock.
  */
-void zfcp_rec_dbf_event_thread_lock(u8 id2, struct zfcp_adapter *adapter)
+void zfcp_rec_dbf_event_thread_lock(char *id2, struct zfcp_adapter *adapter)
 {
 	unsigned long flags;
 
@@ -746,7 +591,7 @@ void zfcp_rec_dbf_event_thread_lock(u8 id2, struct zfcp_adapter *adapter)
 	read_unlock_irqrestore(&adapter->erp_lock, flags);
 }
 
-static void zfcp_rec_dbf_event_target(u8 id2, void *ref,
+static void zfcp_rec_dbf_event_target(char *id2, void *ref,
 				      struct zfcp_adapter *adapter,
 				      atomic_t *status, atomic_t *erp_count,
 				      u64 wwpn, u32 d_id, u64 fcp_lun)
@@ -757,7 +602,7 @@ static void zfcp_rec_dbf_event_target(u8 id2, void *ref,
 	spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
 	memset(r, 0, sizeof(*r));
 	r->id = ZFCP_REC_DBF_ID_TARGET;
-	r->id2 = id2;
+	memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
 	r->u.target.ref = (unsigned long)ref;
 	r->u.target.status = atomic_read(status);
 	r->u.target.wwpn = wwpn;
@@ -774,7 +619,8 @@ static void zfcp_rec_dbf_event_target(u8 id2, void *ref,
  * @ref: additional reference (e.g. request)
  * @adapter: adapter
  */
-void zfcp_rec_dbf_event_adapter(u8 id, void *ref, struct zfcp_adapter *adapter)
+void zfcp_rec_dbf_event_adapter(char *id, void *ref,
+				struct zfcp_adapter *adapter)
 {
 	zfcp_rec_dbf_event_target(id, ref, adapter, &adapter->status,
 				  &adapter->erp_counter, 0, 0, 0);
@@ -786,7 +632,7 @@ void zfcp_rec_dbf_event_adapter(u8 id, void *ref, struct zfcp_adapter *adapter)
  * @ref: additional reference (e.g. request)
  * @port: port
  */
-void zfcp_rec_dbf_event_port(u8 id, void *ref, struct zfcp_port *port)
+void zfcp_rec_dbf_event_port(char *id, void *ref, struct zfcp_port *port)
 {
 	struct zfcp_adapter *adapter = port->adapter;
 
@@ -801,7 +647,7 @@ void zfcp_rec_dbf_event_port(u8 id, void *ref, struct zfcp_port *port)
  * @ref: additional reference (e.g. request)
  * @unit: unit
  */
-void zfcp_rec_dbf_event_unit(u8 id, void *ref, struct zfcp_unit *unit)
+void zfcp_rec_dbf_event_unit(char *id, void *ref, struct zfcp_unit *unit)
 {
 	struct zfcp_port *port = unit->port;
 	struct zfcp_adapter *adapter = port->adapter;
@@ -822,7 +668,7 @@ void zfcp_rec_dbf_event_unit(u8 id, void *ref, struct zfcp_unit *unit)
  * @port: port
  * @unit: unit
  */
-void zfcp_rec_dbf_event_trigger(u8 id2, void *ref, u8 want, u8 need,
+void zfcp_rec_dbf_event_trigger(char *id2, void *ref, u8 want, u8 need,
 				void *action, struct zfcp_adapter *adapter,
 				struct zfcp_port *port, struct zfcp_unit *unit)
 {
@@ -832,7 +678,7 @@ void zfcp_rec_dbf_event_trigger(u8 id2, void *ref, u8 want, u8 need,
 	spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
 	memset(r, 0, sizeof(*r));
 	r->id = ZFCP_REC_DBF_ID_TRIGGER;
-	r->id2 = id2;
+	memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
 	r->u.trigger.ref = (unsigned long)ref;
 	r->u.trigger.want = want;
 	r->u.trigger.need = need;
@@ -855,7 +701,7 @@ void zfcp_rec_dbf_event_trigger(u8 id2, void *ref, u8 want, u8 need,
  * @id2: identifier
  * @erp_action: error recovery action struct pointer
  */
-void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action)
+void zfcp_rec_dbf_event_action(char *id2, struct zfcp_erp_action *erp_action)
 {
 	struct zfcp_adapter *adapter = erp_action->adapter;
 	struct zfcp_rec_dbf_record *r = &adapter->rec_dbf_buf;
@@ -864,7 +710,7 @@ void zfcp_rec_dbf_event_action(u8 id2, struct zfcp_erp_action *erp_action)
 	spin_lock_irqsave(&adapter->rec_dbf_lock, flags);
 	memset(r, 0, sizeof(*r));
 	r->id = ZFCP_REC_DBF_ID_ACTION;
-	r->id2 = id2;
+	memcpy(r->id2, id2, ZFCP_DBF_ID_SIZE);
 	r->u.action.action = (unsigned long)erp_action;
 	r->u.action.status = erp_action->status;
 	r->u.action.step = erp_action->step;
diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h
index 74998ff88e5..a573f7344dd 100644
--- a/drivers/s390/scsi/zfcp_dbf.h
+++ b/drivers/s390/scsi/zfcp_dbf.h
@@ -25,6 +25,7 @@
 #include "zfcp_fsf.h"
 
 #define ZFCP_DBF_TAG_SIZE      4
+#define ZFCP_DBF_ID_SIZE       7
 
 struct zfcp_dbf_dump {
 	u8 tag[ZFCP_DBF_TAG_SIZE];
@@ -70,7 +71,7 @@ struct zfcp_rec_dbf_record_action {
 
 struct zfcp_rec_dbf_record {
 	u8 id;
-	u8 id2;
+	char id2[7];
 	union {
 		struct zfcp_rec_dbf_record_action action;
 		struct zfcp_rec_dbf_record_thread thread;
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 28c7185f24b..65addf6a91e 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -55,7 +55,7 @@ enum zfcp_erp_act_result {
 
 static void zfcp_erp_adapter_block(struct zfcp_adapter *adapter, int mask)
 {
-	zfcp_erp_modify_adapter_status(adapter, 15, NULL,
+	zfcp_erp_modify_adapter_status(adapter, "erablk1", NULL,
 				       ZFCP_STATUS_COMMON_UNBLOCKED | mask,
 				       ZFCP_CLEAR);
 }
@@ -75,9 +75,9 @@ static void zfcp_erp_action_ready(struct zfcp_erp_action *act)
 	struct zfcp_adapter *adapter = act->adapter;
 
 	list_move(&act->list, &act->adapter->erp_ready_head);
-	zfcp_rec_dbf_event_action(146, act);
+	zfcp_rec_dbf_event_action("erardy1", act);
 	up(&adapter->erp_ready_sem);
-	zfcp_rec_dbf_event_thread(2, adapter);
+	zfcp_rec_dbf_event_thread("erardy2", adapter);
 }
 
 static void zfcp_erp_action_dismiss(struct zfcp_erp_action *act)
@@ -208,7 +208,7 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need,
 
 static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
 				   struct zfcp_port *port,
-				   struct zfcp_unit *unit, u8 id, void *ref)
+				   struct zfcp_unit *unit, char *id, void *ref)
 {
 	int retval = 1, need;
 	struct zfcp_erp_action *act = NULL;
@@ -228,7 +228,7 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
 	++adapter->erp_total_count;
 	list_add_tail(&act->list, &adapter->erp_ready_head);
 	up(&adapter->erp_ready_sem);
-	zfcp_rec_dbf_event_thread(1, adapter);
+	zfcp_rec_dbf_event_thread("eracte1", adapter);
 	retval = 0;
  out:
 	zfcp_rec_dbf_event_trigger(id, ref, want, need, act,
@@ -237,13 +237,13 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter,
 }
 
 static int _zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter,
-				    int clear_mask, u8 id, void *ref)
+				    int clear_mask, char *id, void *ref)
 {
 	zfcp_erp_adapter_block(adapter, clear_mask);
 
 	/* ensure propagation of failed status to new devices */
 	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
-		zfcp_erp_adapter_failed(adapter, 13, NULL);
+		zfcp_erp_adapter_failed(adapter, "erareo1", NULL);
 		return -EIO;
 	}
 	return zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER,
@@ -258,7 +258,7 @@ static int _zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter,
  * @ref: Reference for debug trace event.
  */
 void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear,
-			     u8 id, void *ref)
+			     char *id, void *ref)
 {
 	unsigned long flags;
 
@@ -277,7 +277,7 @@ void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear,
  * @ref: Reference for debug trace event.
  */
 void zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear,
-			       u8 id, void *ref)
+			       char *id, void *ref)
 {
 	int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
 	zfcp_erp_adapter_reopen(adapter, clear | flags, id, ref);
@@ -290,7 +290,8 @@ void zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear,
  * @id: Id for debug trace event.
  * @ref: Reference for debug trace event.
  */
-void zfcp_erp_port_shutdown(struct zfcp_port *port, int clear, u8 id, void *ref)
+void zfcp_erp_port_shutdown(struct zfcp_port *port, int clear, char *id,
+			    void *ref)
 {
 	int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
 	zfcp_erp_port_reopen(port, clear | flags, id, ref);
@@ -303,7 +304,8 @@ void zfcp_erp_port_shutdown(struct zfcp_port *port, int clear, u8 id, void *ref)
  * @id: Id for debug trace event.
  * @ref: Reference for debug trace event.
  */
-void zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear, u8 id, void *ref)
+void zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear, char *id,
+			    void *ref)
 {
 	int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
 	zfcp_erp_unit_reopen(unit, clear | flags, id, ref);
@@ -311,13 +313,13 @@ void zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear, u8 id, void *ref)
 
 static void zfcp_erp_port_block(struct zfcp_port *port, int clear)
 {
-	zfcp_erp_modify_port_status(port, 17, NULL,
+	zfcp_erp_modify_port_status(port, "erpblk1", NULL,
 				    ZFCP_STATUS_COMMON_UNBLOCKED | clear,
 				    ZFCP_CLEAR);
 }
 
 static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port,
-					 int clear, u8 id, void *ref)
+					 int clear, char *id, void *ref)
 {
 	zfcp_erp_port_block(port, clear);
 
@@ -334,7 +336,7 @@ static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port,
  * @id: Id for debug trace event.
  * @ref: Reference for debug trace event.
  */
-void zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, u8 id,
+void zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, char *id,
 				 void *ref)
 {
 	unsigned long flags;
@@ -347,14 +349,14 @@ void zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, u8 id,
 	read_unlock_irqrestore(&zfcp_data.config_lock, flags);
 }
 
-static int _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, u8 id,
+static int _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id,
 				 void *ref)
 {
 	zfcp_erp_port_block(port, clear);
 
 	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
 		/* ensure propagation of failed status to new devices */
-		zfcp_erp_port_failed(port, 14, NULL);
+		zfcp_erp_port_failed(port, "erpreo1", NULL);
 		return -EIO;
 	}
 
@@ -369,7 +371,7 @@ static int _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, u8 id,
  *
  * Returns 0 if recovery has been triggered, < 0 if not.
  */
-int zfcp_erp_port_reopen(struct zfcp_port *port, int clear, u8 id, void *ref)
+int zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id, void *ref)
 {
 	unsigned long flags;
 	int retval;
@@ -386,12 +388,12 @@ int zfcp_erp_port_reopen(struct zfcp_port *port, int clear, u8 id, void *ref)
 
 static void zfcp_erp_unit_block(struct zfcp_unit *unit, int clear_mask)
 {
-	zfcp_erp_modify_unit_status(unit, 19, NULL,
+	zfcp_erp_modify_unit_status(unit, "erublk1", NULL,
 				    ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask,
 				    ZFCP_CLEAR);
 }
 
-static void _zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, u8 id,
+static void _zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, char *id,
 				  void *ref)
 {
 	struct zfcp_adapter *adapter = unit->port->adapter;
@@ -411,7 +413,8 @@ static void _zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, u8 id,
  * @clear_mask: specifies flags in unit status to be cleared
  * Return: 0 on success, < 0 on error
  */
-void zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, u8 id, void *ref)
+void zfcp_erp_unit_reopen(struct zfcp_unit *unit, int clear, char *id,
+			  void *ref)
 {
 	unsigned long flags;
 	struct zfcp_port *port = unit->port;
@@ -437,28 +440,28 @@ static int status_change_clear(unsigned long mask, atomic_t *status)
 static void zfcp_erp_adapter_unblock(struct zfcp_adapter *adapter)
 {
 	if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status))
-		zfcp_rec_dbf_event_adapter(16, NULL, adapter);
+		zfcp_rec_dbf_event_adapter("eraubl1", NULL, adapter);
 	atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &adapter->status);
 }
 
 static void zfcp_erp_port_unblock(struct zfcp_port *port)
 {
 	if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status))
-		zfcp_rec_dbf_event_port(18, NULL, port);
+		zfcp_rec_dbf_event_port("erpubl1", NULL, port);
 	atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &port->status);
 }
 
 static void zfcp_erp_unit_unblock(struct zfcp_unit *unit)
 {
 	if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status))
-		zfcp_rec_dbf_event_unit(20, NULL, unit);
+		zfcp_rec_dbf_event_unit("eruubl1", NULL, unit);
 	atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &unit->status);
 }
 
 static void zfcp_erp_action_to_running(struct zfcp_erp_action *erp_action)
 {
 	list_move(&erp_action->list, &erp_action->adapter->erp_running_head);
-	zfcp_rec_dbf_event_action(145, erp_action);
+	zfcp_rec_dbf_event_action("erator1", erp_action);
 }
 
 static void zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *act)
@@ -474,11 +477,11 @@ static void zfcp_erp_strategy_check_fsfreq(struct zfcp_erp_action *act)
 		if (act->status & (ZFCP_STATUS_ERP_DISMISSED |
 				   ZFCP_STATUS_ERP_TIMEDOUT)) {
 			act->fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
-			zfcp_rec_dbf_event_action(142, act);
+			zfcp_rec_dbf_event_action("erscf_1", act);
 			act->fsf_req->erp_action = NULL;
 		}
 		if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
-			zfcp_rec_dbf_event_action(143, act);
+			zfcp_rec_dbf_event_action("erscf_2", act);
 		if (act->fsf_req->status & (ZFCP_STATUS_FSFREQ_COMPLETED |
 					    ZFCP_STATUS_FSFREQ_DISMISSED))
 			act->fsf_req = NULL;
@@ -530,7 +533,7 @@ static void zfcp_erp_strategy_memwait(struct zfcp_erp_action *erp_action)
 }
 
 static void _zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter,
-				      int clear, u8 id, void *ref)
+				      int clear, char *id, void *ref)
 {
 	struct zfcp_port *port;
 
@@ -538,8 +541,8 @@ static void _zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter,
 		_zfcp_erp_port_reopen(port, clear, id, ref);
 }
 
-static void _zfcp_erp_unit_reopen_all(struct zfcp_port *port, int clear, u8 id,
-				      void *ref)
+static void _zfcp_erp_unit_reopen_all(struct zfcp_port *port, int clear,
+				      char *id, void *ref)
 {
 	struct zfcp_unit *unit;
 
@@ -559,28 +562,28 @@ static void zfcp_erp_strategy_followup_actions(struct zfcp_erp_action *act)
 
 	case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
 		if (status == ZFCP_ERP_SUCCEEDED)
-			_zfcp_erp_port_reopen_all(adapter, 0, 70, NULL);
+			_zfcp_erp_port_reopen_all(adapter, 0, "ersfa_1", NULL);
 		else
-			_zfcp_erp_adapter_reopen(adapter, 0, 71, NULL);
+			_zfcp_erp_adapter_reopen(adapter, 0, "ersfa_2", NULL);
 		break;
 
 	case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
 		if (status == ZFCP_ERP_SUCCEEDED)
-			_zfcp_erp_port_reopen(port, 0, 72, NULL);
+			_zfcp_erp_port_reopen(port, 0, "ersfa_3", NULL);
 		else
-			_zfcp_erp_adapter_reopen(adapter, 0, 73, NULL);
+			_zfcp_erp_adapter_reopen(adapter, 0, "ersfa_4", NULL);
 		break;
 
 	case ZFCP_ERP_ACTION_REOPEN_PORT:
 		if (status == ZFCP_ERP_SUCCEEDED)
-			_zfcp_erp_unit_reopen_all(port, 0, 74, NULL);
+			_zfcp_erp_unit_reopen_all(port, 0, "ersfa_5", NULL);
 		else
-			_zfcp_erp_port_forced_reopen(port, 0, 75, NULL);
+			_zfcp_erp_port_forced_reopen(port, 0, "ersfa_6", NULL);
 		break;
 
 	case ZFCP_ERP_ACTION_REOPEN_UNIT:
 		if (status != ZFCP_ERP_SUCCEEDED)
-			_zfcp_erp_port_reopen(unit->port, 0, 76, NULL);
+			_zfcp_erp_port_reopen(unit->port, 0, "ersfa_7", NULL);
 		break;
 	}
 }
@@ -617,7 +620,7 @@ static void zfcp_erp_enqueue_ptp_port(struct zfcp_adapter *adapter)
 				 adapter->peer_d_id);
 	if (IS_ERR(port)) /* error or port already attached */
 		return;
-	_zfcp_erp_port_reopen(port, 0, 150, NULL);
+	_zfcp_erp_port_reopen(port, 0, "ereptp1", NULL);
 }
 
 static int zfcp_erp_adapter_strat_fsf_xconf(struct zfcp_erp_action *erp_action)
@@ -640,9 +643,9 @@ static int zfcp_erp_adapter_strat_fsf_xconf(struct zfcp_erp_action *erp_action)
 			return ZFCP_ERP_FAILED;
 		}
 
-		zfcp_rec_dbf_event_thread_lock(6, adapter);
+		zfcp_rec_dbf_event_thread_lock("erasfx1", adapter);
 		down(&adapter->erp_ready_sem);
-		zfcp_rec_dbf_event_thread_lock(7, adapter);
+		zfcp_rec_dbf_event_thread_lock("erasfx2", adapter);
 		if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT)
 			break;
 
@@ -681,9 +684,9 @@ static int zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *act)
 	if (ret)
 		return ZFCP_ERP_FAILED;
 
-	zfcp_rec_dbf_event_thread_lock(8, adapter);
+	zfcp_rec_dbf_event_thread_lock("erasox1", adapter);
 	down(&adapter->erp_ready_sem);
-	zfcp_rec_dbf_event_thread_lock(9, adapter);
+	zfcp_rec_dbf_event_thread_lock("erasox2", adapter);
 	if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
 		return ZFCP_ERP_FAILED;
 
@@ -714,7 +717,7 @@ static void zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *act)
 	zfcp_fsf_req_dismiss_all(adapter);
 	adapter->fsf_req_seq_no = 0;
 	/* all ports and units are closed */
-	zfcp_erp_modify_adapter_status(adapter, 24, NULL,
+	zfcp_erp_modify_adapter_status(adapter, "erascl1", NULL,
 				       ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
 
 	atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK |
@@ -832,7 +835,7 @@ static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act)
 	struct zfcp_port *port = act->port;
 
 	if (port->wwpn != adapter->peer_wwpn) {
-		zfcp_erp_port_failed(port, 25, NULL);
+		zfcp_erp_port_failed(port, "eroptp1", NULL);
 		return ZFCP_ERP_FAILED;
 	}
 	port->d_id = adapter->peer_d_id;
@@ -986,7 +989,7 @@ static int zfcp_erp_strategy_check_unit(struct zfcp_unit *unit, int result)
 				"port 0x%016Lx\n",
 				(unsigned long long)unit->fcp_lun,
 				(unsigned long long)unit->port->wwpn);
-			zfcp_erp_unit_failed(unit, 21, NULL);
+			zfcp_erp_unit_failed(unit, "erusck1", NULL);
 		}
 		break;
 	}
@@ -1016,7 +1019,7 @@ static int zfcp_erp_strategy_check_port(struct zfcp_port *port, int result)
 			dev_err(&port->adapter->ccw_device->dev,
 				"ERP failed for remote port 0x%016Lx\n",
 				(unsigned long long)port->wwpn);
-			zfcp_erp_port_failed(port, 22, NULL);
+			zfcp_erp_port_failed(port, "erpsck1", NULL);
 		}
 		break;
 	}
@@ -1043,7 +1046,7 @@ static int zfcp_erp_strategy_check_adapter(struct zfcp_adapter *adapter,
 			dev_err(&adapter->ccw_device->dev,
 				"ERP cannot recover an error "
 				"on the FCP device\n");
-			zfcp_erp_adapter_failed(adapter, 23, NULL);
+			zfcp_erp_adapter_failed(adapter, "erasck1", NULL);
 		}
 		break;
 	}
@@ -1108,7 +1111,7 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
 		if (zfcp_erp_strat_change_det(&adapter->status, erp_status)) {
 			_zfcp_erp_adapter_reopen(adapter,
 						 ZFCP_STATUS_COMMON_ERP_FAILED,
-						 67, NULL);
+						 "ersscg1", NULL);
 			return ZFCP_ERP_EXIT;
 		}
 		break;
@@ -1118,7 +1121,7 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
 		if (zfcp_erp_strat_change_det(&port->status, erp_status)) {
 			_zfcp_erp_port_reopen(port,
 					      ZFCP_STATUS_COMMON_ERP_FAILED,
-					      68, NULL);
+					      "ersscg2", NULL);
 			return ZFCP_ERP_EXIT;
 		}
 		break;
@@ -1127,7 +1130,7 @@ static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
 		if (zfcp_erp_strat_change_det(&unit->status, erp_status)) {
 			_zfcp_erp_unit_reopen(unit,
 					      ZFCP_STATUS_COMMON_ERP_FAILED,
-					      69, NULL);
+					      "ersscg3", NULL);
 			return ZFCP_ERP_EXIT;
 		}
 		break;
@@ -1146,7 +1149,7 @@ static void zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
 	}
 
 	list_del(&erp_action->list);
-	zfcp_rec_dbf_event_action(144, erp_action);
+	zfcp_rec_dbf_event_action("eractd1", erp_action);
 
 	switch (erp_action->action) {
 	case ZFCP_ERP_ACTION_REOPEN_UNIT:
@@ -1331,7 +1334,7 @@ static int zfcp_erp_strategy(struct zfcp_erp_action *erp_action)
 			erp_action->status |= ZFCP_STATUS_ERP_LOWMEM;
 		}
 		if (adapter->erp_total_count == adapter->erp_low_mem_count)
-			_zfcp_erp_adapter_reopen(adapter, 0, 66, NULL);
+			_zfcp_erp_adapter_reopen(adapter, 0, "erstgy1", NULL);
 		else {
 			zfcp_erp_strategy_memwait(erp_action);
 			retval = ZFCP_ERP_CONTINUES;
@@ -1391,9 +1394,9 @@ static int zfcp_erp_thread(void *data)
 				zfcp_erp_wakeup(adapter);
 		}
 
-		zfcp_rec_dbf_event_thread_lock(4, adapter);
+		zfcp_rec_dbf_event_thread_lock("erthrd1", adapter);
 		ignore = down_interruptible(&adapter->erp_ready_sem);
-		zfcp_rec_dbf_event_thread_lock(5, adapter);
+		zfcp_rec_dbf_event_thread_lock("erthrd2", adapter);
 	}
 
 	atomic_clear_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_UP, &adapter->status);
@@ -1438,7 +1441,7 @@ void zfcp_erp_thread_kill(struct zfcp_adapter *adapter)
 {
 	atomic_set_mask(ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL, &adapter->status);
 	up(&adapter->erp_ready_sem);
-	zfcp_rec_dbf_event_thread_lock(3, adapter);
+	zfcp_rec_dbf_event_thread_lock("erthrk1", adapter);
 
 	wait_event(adapter->erp_thread_wqh,
 		   !(atomic_read(&adapter->status) &
@@ -1454,7 +1457,7 @@ void zfcp_erp_thread_kill(struct zfcp_adapter *adapter)
  * @id: Event id for debug trace.
  * @ref: Reference for debug trace.
  */
-void zfcp_erp_adapter_failed(struct zfcp_adapter *adapter, u8 id, void *ref)
+void zfcp_erp_adapter_failed(struct zfcp_adapter *adapter, char *id, void *ref)
 {
 	zfcp_erp_modify_adapter_status(adapter, id, ref,
 				       ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
@@ -1466,7 +1469,7 @@ void zfcp_erp_adapter_failed(struct zfcp_adapter *adapter, u8 id, void *ref)
  * @id: Event id for debug trace.
  * @ref: Reference for debug trace.
  */
-void zfcp_erp_port_failed(struct zfcp_port *port, u8 id, void *ref)
+void zfcp_erp_port_failed(struct zfcp_port *port, char *id, void *ref)
 {
 	zfcp_erp_modify_port_status(port, id, ref,
 				    ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
@@ -1478,7 +1481,7 @@ void zfcp_erp_port_failed(struct zfcp_port *port, u8 id, void *ref)
  * @id: Event id for debug trace.
  * @ref: Reference for debug trace.
  */
-void zfcp_erp_unit_failed(struct zfcp_unit *unit, u8 id, void *ref)
+void zfcp_erp_unit_failed(struct zfcp_unit *unit, char *id, void *ref)
 {
 	zfcp_erp_modify_unit_status(unit, id, ref,
 				    ZFCP_STATUS_COMMON_ERP_FAILED, ZFCP_SET);
@@ -1505,7 +1508,7 @@ void zfcp_erp_wait(struct zfcp_adapter *adapter)
  *
  * Changes in common status bits are propagated to attached ports and units.
  */
-void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, u8 id,
+void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, char *id,
 				    void *ref, u32 mask, int set_or_clear)
 {
 	struct zfcp_port *port;
@@ -1539,7 +1542,7 @@ void zfcp_erp_modify_adapter_status(struct zfcp_adapter *adapter, u8 id,
  *
  * Changes in common status bits are propagated to attached units.
  */
-void zfcp_erp_modify_port_status(struct zfcp_port *port, u8 id, void *ref,
+void zfcp_erp_modify_port_status(struct zfcp_port *port, char *id, void *ref,
 				 u32 mask, int set_or_clear)
 {
 	struct zfcp_unit *unit;
@@ -1571,7 +1574,7 @@ void zfcp_erp_modify_port_status(struct zfcp_port *port, u8 id, void *ref,
  * @mask: status bits to change
  * @set_or_clear: ZFCP_SET or ZFCP_CLEAR
  */
-void zfcp_erp_modify_unit_status(struct zfcp_unit *unit, u8 id, void *ref,
+void zfcp_erp_modify_unit_status(struct zfcp_unit *unit, char *id, void *ref,
 				 u32 mask, int set_or_clear)
 {
 	if (set_or_clear == ZFCP_SET) {
@@ -1594,7 +1597,7 @@ void zfcp_erp_modify_unit_status(struct zfcp_unit *unit, u8 id, void *ref,
  * @id: The debug trace id.
  * @id: Reference for the debug trace.
  */
-void zfcp_erp_port_boxed(struct zfcp_port *port, u8 id, void *ref)
+void zfcp_erp_port_boxed(struct zfcp_port *port, char *id, void *ref)
 {