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authorPeter Oberparleiter <peter.oberparleiter@de.ibm.com>2011-10-30 14:16:04 (GMT)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-10-30 14:16:15 (GMT)
commitde400d6b78d15a73023485f050bc6b1709dc7a79 (patch)
tree2d2e7233a76982db4cf12ff0859054a33e46a911 /arch/s390
parentce949717b559709423c1ef716a9db16d1dcadaed (diff)
downloadlinux-fsl-qoriq-de400d6b78d15a73023485f050bc6b1709dc7a79.tar.xz
[S390] fix mismatch in summation of I/O IRQ statistics
Current IRQ statistics support does not show detail counts for I/O interrupts which are processed internally only. The result is a summation count which is way off such as this one: CPU0 CPU1 CPU2 I/O: 1331 710 442 [...] QAI: 15 16 16 [I/O] QDIO Adapter Interrupt QDI: 1 0 0 [I/O] QDIO Interrupt DAS: 706 645 381 [I/O] DASD C15: 26 10 0 [I/O] 3215 C70: 0 0 0 [I/O] 3270 TAP: 0 0 0 [I/O] Tape VMR: 0 0 0 [I/O] Unit Record Devices LCS: 0 0 0 [I/O] LCS CLW: 0 0 0 [I/O] CLAW CTC: 0 0 0 [I/O] CTC APB: 0 0 0 [I/O] AP Bus Fix this by moving I/O interrupt accounting into the common I/O layer. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/ccwdev.h3
-rw-r--r--arch/s390/include/asm/irq.h2
-rw-r--r--arch/s390/kernel/irq.c2
3 files changed, 5 insertions, 2 deletions
diff --git a/arch/s390/include/asm/ccwdev.h b/arch/s390/include/asm/ccwdev.h
index 623f2fb..9381c92 100644
--- a/arch/s390/include/asm/ccwdev.h
+++ b/arch/s390/include/asm/ccwdev.h
@@ -11,6 +11,7 @@
#include <linux/device.h>
#include <linux/mod_devicetable.h>
#include <asm/fcx.h>
+#include <asm/irq.h>
/* structs from asm/cio.h */
struct irb;
@@ -127,6 +128,7 @@ enum uc_todo {
* @restore: callback for restoring after hibernation
* @uc_handler: callback for unit check handler
* @driver: embedded device driver structure
+ * @int_class: interruption class to use for accounting interrupts
*/
struct ccw_driver {
struct ccw_device_id *ids;
@@ -144,6 +146,7 @@ struct ccw_driver {
int (*restore)(struct ccw_device *);
enum uc_todo (*uc_handler) (struct ccw_device *, struct irb *);
struct device_driver driver;
+ enum interruption_class int_class;
};
extern struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv,
diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h
index ba7b01c..1f68605 100644
--- a/arch/s390/include/asm/irq.h
+++ b/arch/s390/include/asm/irq.h
@@ -17,8 +17,8 @@ enum interruption_class {
EXTINT_SCP,
EXTINT_IUC,
EXTINT_CPM,
+ IOINT_CIO,
IOINT_QAI,
- IOINT_QDI,
IOINT_DAS,
IOINT_C15,
IOINT_C70,
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 1f4050d..d382f9d 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -42,8 +42,8 @@ static const struct irq_class intrclass_names[] = {
{.name = "SCP", .desc = "[EXT] Service Call" },
{.name = "IUC", .desc = "[EXT] IUCV" },
{.name = "CPM", .desc = "[EXT] CPU Measurement" },
+ {.name = "CIO", .desc = "[I/O] Common I/O Layer Interrupt" },
{.name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt" },
- {.name = "QDI", .desc = "[I/O] QDIO Interrupt" },
{.name = "DAS", .desc = "[I/O] DASD" },
{.name = "C15", .desc = "[I/O] 3215" },
{.name = "C70", .desc = "[I/O] 3270" },