[S390] cio: increase trace level

Move debug traces for start I/O and interrupt events to exclusive
trace levels. Also change tracing in hot-path from sprintf (costly)
to hex.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2 files changed, 17 insertions, 31 deletions

diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 5ec7789bd9d8..390b4e96fd0d 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -139,12 +139,11 @@ cio_start_key (struct subchannel *sch,	/* subchannel structure */
                __u8 lpm,                /* logical path mask */
                __u8 key)                /* storage key */
 {
-        char dbf_txt[15];
         int ccode;
         union orb *orb;
 
-        CIO_TRACE_EVENT(4, "stIO");
-        CIO_TRACE_EVENT(4, dev_name(&sch->dev));
+        CIO_TRACE_EVENT(5, "stIO");
+        CIO_TRACE_EVENT(5, dev_name(&sch->dev));
 
         orb = &to_io_private(sch)->orb;
         memset(orb, 0, sizeof(union orb));
@@ -169,8 +168,7 @@ cio_start_key (struct subchannel *sch,	/* subchannel structure */
         ccode = ssch(sch->schid, orb);
 
         /* process condition code */
-        sprintf(dbf_txt, "ccode:%d", ccode);
-        CIO_TRACE_EVENT(4, dbf_txt);
+        CIO_HEX_EVENT(5, &ccode, sizeof(ccode));
 
         switch (ccode) {
         case 0:
@@ -201,16 +199,14 @@ cio_start (struct subchannel *sch, struct ccw1 *cpa, __u8 lpm)
 int
 cio_resume (struct subchannel *sch)
 {
-        char dbf_txt[15];
         int ccode;
 
-        CIO_TRACE_EVENT (4, "resIO");
+        CIO_TRACE_EVENT(4, "resIO");
         CIO_TRACE_EVENT(4, dev_name(&sch->dev));
 
         ccode = rsch (sch->schid);
 
-        sprintf (dbf_txt, "ccode:%d", ccode);
-        CIO_TRACE_EVENT (4, dbf_txt);
+        CIO_HEX_EVENT(4, &ccode, sizeof(ccode));
 
         switch (ccode) {
         case 0:
@@ -235,13 +231,12 @@ cio_resume (struct subchannel *sch)
 int
 cio_halt(struct subchannel *sch)
 {
-        char dbf_txt[15];
         int ccode;
 
         if (!sch)
                 return -ENODEV;
 
-        CIO_TRACE_EVENT (2, "haltIO");
+        CIO_TRACE_EVENT(2, "haltIO");
         CIO_TRACE_EVENT(2, dev_name(&sch->dev));
 
         /*
@@ -249,8 +244,7 @@ cio_halt(struct subchannel *sch)
          */
         ccode = hsch (sch->schid);
 
-        sprintf (dbf_txt, "ccode:%d", ccode);
-        CIO_TRACE_EVENT (2, dbf_txt);
+        CIO_HEX_EVENT(2, &ccode, sizeof(ccode));
 
         switch (ccode) {
         case 0:
@@ -270,13 +264,12 @@ cio_halt(struct subchannel *sch)
 int
 cio_clear(struct subchannel *sch)
 {
-        char dbf_txt[15];
         int ccode;
 
         if (!sch)
                 return -ENODEV;
 
-        CIO_TRACE_EVENT (2, "clearIO");
+        CIO_TRACE_EVENT(2, "clearIO");
         CIO_TRACE_EVENT(2, dev_name(&sch->dev));
 
         /*
@@ -284,8 +277,7 @@ cio_clear(struct subchannel *sch)
          */
         ccode = csch (sch->schid);
 
-        sprintf (dbf_txt, "ccode:%d", ccode);
-        CIO_TRACE_EVENT (2, dbf_txt);
+        CIO_HEX_EVENT(2, &ccode, sizeof(ccode));
 
         switch (ccode) {
         case 0:
@@ -306,19 +298,17 @@ cio_clear(struct subchannel *sch)
 int
 cio_cancel (struct subchannel *sch)
 {
-        char dbf_txt[15];
         int ccode;
 
         if (!sch)
                 return -ENODEV;
 
-        CIO_TRACE_EVENT (2, "cancelIO");
+        CIO_TRACE_EVENT(2, "cancelIO");
         CIO_TRACE_EVENT(2, dev_name(&sch->dev));
 
         ccode = xsch (sch->schid);
 
-        sprintf (dbf_txt, "ccode:%d", ccode);
-        CIO_TRACE_EVENT (2, dbf_txt);
+        CIO_HEX_EVENT(2, &ccode, sizeof(ccode));
 
         switch (ccode) {
         case 0:         /* success */
@@ -429,11 +419,10 @@ EXPORT_SYMBOL_GPL(cio_update_schib);
  */
 int cio_enable_subchannel(struct subchannel *sch, u32 intparm)
 {
-        char dbf_txt[15];
         int retry;
         int ret;
 
-        CIO_TRACE_EVENT (2, "ensch");
+        CIO_TRACE_EVENT(2, "ensch");
         CIO_TRACE_EVENT(2, dev_name(&sch->dev));
 
         if (sch_is_pseudo_sch(sch))
@@ -460,8 +449,7 @@ int cio_enable_subchannel(struct subchannel *sch, u32 intparm)
                 } else
                         break;
         }
-        sprintf (dbf_txt, "ret:%d", ret);
-        CIO_TRACE_EVENT (2, dbf_txt);
+        CIO_HEX_EVENT(2, &ret, sizeof(ret));
         return ret;
 }
 EXPORT_SYMBOL_GPL(cio_enable_subchannel);
@@ -472,11 +460,10 @@ EXPORT_SYMBOL_GPL(cio_enable_subchannel);
  */
 int cio_disable_subchannel(struct subchannel *sch)
 {
-        char dbf_txt[15];
         int retry;
         int ret;
 
-        CIO_TRACE_EVENT (2, "dissch");
+        CIO_TRACE_EVENT(2, "dissch");
         CIO_TRACE_EVENT(2, dev_name(&sch->dev));
 
         if (sch_is_pseudo_sch(sch))
@@ -495,8 +482,7 @@ int cio_disable_subchannel(struct subchannel *sch)
                 } else
                         break;
         }
-        sprintf (dbf_txt, "ret:%d", ret);
-        CIO_TRACE_EVENT (2, dbf_txt);
+        CIO_HEX_EVENT(2, &ret, sizeof(ret));
         return ret;
 }
 EXPORT_SYMBOL_GPL(cio_disable_subchannel);
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index b6240227ecba..19b4469a3ca4 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1168,8 +1168,8 @@ static void io_subchannel_irq(struct subchannel *sch)
 
         cdev = sch_get_cdev(sch);
 
-        CIO_TRACE_EVENT(3, "IRQ");
-        CIO_TRACE_EVENT(3, dev_name(&sch->dev));
+        CIO_TRACE_EVENT(6, "IRQ");
+        CIO_TRACE_EVENT(6, dev_name(&sch->dev));
         if (cdev)
                 dev_fsm_event(cdev, DEV_EVENT_INTERRUPT);
 }