[S390] irq: have detailed statistics for interrupt types
Up to now /proc/interrupts only has statistics for external and i/o
interrupts but doesn't split up them any further.
This patch adds a line for every single interrupt source so that it
is possible to easier tell what the machine is/was doing.
Part of the output now looks like this;
CPU0 CPU2 CPU4
EXT: 3898 4232 2305
I/O: 782 315 245
CLK: 1029 1964 727 [EXT] Clock Comparator
IPI: 2868 2267 1577 [EXT] Signal Processor
TMR: 0 0 0 [EXT] CPU Timer
TAL: 0 0 0 [EXT] Timing Alert
PFL: 0 0 0 [EXT] Pseudo Page Fault
[...]
NMI: 0 1 1 [NMI] Machine Checks
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index 35cc468..e65572e 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -7,6 +7,7 @@
* Martin Schwidefsky <schwidefsky@de.ibm.com>
*/
+#include <linux/kernel_stat.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/spinlock.h>
@@ -18,8 +19,9 @@
#include <linux/suspend.h>
#include <linux/completion.h>
#include <linux/platform_device.h>
-#include <asm/types.h>
#include <asm/s390_ext.h>
+#include <asm/types.h>
+#include <asm/irq.h>
#include "sclp.h"
@@ -402,6 +404,7 @@
u32 finished_sccb;
u32 evbuf_pending;
+ kstat_cpu(smp_processor_id()).irqs[EXTINT_SCP]++;
spin_lock(&sclp_lock);
finished_sccb = param32 & 0xfffffff8;
evbuf_pending = param32 & 0x3;
@@ -824,6 +827,7 @@
{
u32 finished_sccb;
+ kstat_cpu(smp_processor_id()).irqs[EXTINT_SCP]++;
finished_sccb = param32 & 0xfffffff8;
/* Is this the interrupt we are waiting for? */
if (finished_sccb == 0)