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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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1
arch/s390/kernel/vtime.c
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@ -324,6 +324,7 @@ static void do_cpu_timer_interrupt(unsigned int ext_int_code,
struct list_head cb_list; /* the callback queue */
__u64 elapsed, next;
kstat_cpu(smp_processor_id()).irqs[EXTINT_TMR]++;
INIT_LIST_HEAD(&cb_list);
vq = &__get_cpu_var(virt_cpu_timer);