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authorPeter Oberparleiter <peter.oberparleiter@de.ibm.com>2011-10-30 18:16:04 +0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-10-30 18:16:15 +0400
commitde400d6b78d15a73023485f050bc6b1709dc7a79 (patch)
tree2d2e7233a76982db4cf12ff0859054a33e46a911 /drivers/s390/block/dasd.c
parentce949717b559709423c1ef716a9db16d1dcadaed (diff)
downloadlinux-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 'drivers/s390/block/dasd.c')
-rw-r--r--drivers/s390/block/dasd.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index a1d3ddba99cc..46054c75cf31 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -11,7 +11,6 @@
#define KMSG_COMPONENT "dasd"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-#include <linux/kernel_stat.h>
#include <linux/kmod.h>
#include <linux/init.h>
#include <linux/interrupt.h>
@@ -1594,7 +1593,6 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
unsigned long long now;
int expires;
- kstat_cpu(smp_processor_id()).irqs[IOINT_DAS]++;
if (IS_ERR(irb)) {
switch (PTR_ERR(irb)) {
case -EIO: