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[S390] irq: have detailed statistics for interrupt types

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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>
This commit is contained in:
Heiko Carstens
2011-01-05 12:47:28 +01:00
committed by Martin Schwidefsky
parent 545b288dcb
commit 052ff461c8
11 changed files with 56 additions and 20 deletions
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3
arch/s390/kernel/time.c
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@@ -15,6 +15,7 @@
#define KMSG_COMPONENT "time"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/kernel_stat.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/sched.h>
@@ -160,6 +161,7 @@ static void clock_comparator_interrupt(unsigned int ext_int_code,
unsigned int param32,
unsigned long param64)
{
kstat_cpu(smp_processor_id()).irqs[EXTINT_CLK]++;
if (S390_lowcore.clock_comparator == -1ULL)
set_clock_comparator(S390_lowcore.clock_comparator);
}
@@ -170,6 +172,7 @@ static void stp_timing_alert(struct stp_irq_parm *);
static void timing_alert_interrupt(unsigned int ext_int_code,
unsigned int param32, unsigned long param64)
{
kstat_cpu(smp_processor_id()).irqs[EXTINT_TLA]++;
if (param32 & 0x00c40000)
etr_timing_alert((struct etr_irq_parm *) &param32);
if (param32 & 0x00038000)