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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-01-02 15:18:18 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-01-08 10:57:07 +0100 |
| commit | 420f42ecf48a926ba775ec7d7294425f004b6ade (patch) | |
| tree | cd8a382554a325355701f0d7214cb0c7166b11b8 /drivers/s390/char/sclp.c | |
| parent | s390/irq: enable irq sum accounting for /proc/stat again (diff) | |
| download | linux-dev-420f42ecf48a926ba775ec7d7294425f004b6ade.tar.xz linux-dev-420f42ecf48a926ba775ec7d7294425f004b6ade.zip | |
s390/irq: remove split irq fields from /proc/stat
Now that irq sum accounting for /proc/stat's "intr" line works again we
have the oddity that the sum field (first field) contains only the sum
of the second (external irqs) and third field (I/O interrupts).
The reason for that is that these two fields are already sums of all other
fields. So if we would sum up everything we would count every interrupt
twice.
This is broken since the split interrupt accounting was merged two years
ago: 052ff461c8427629aee887ccc27478fc7373237c "[S390] irq: have detailed
statistics for interrupt types".
To fix this remove the split interrupt fields from /proc/stat's "intr"
line again and only have them in /proc/interrupts.
This restores the old behaviour, seems to be the only sane fix and mimics
a behaviour from other architectures where /proc/interrupts also contains
more than /proc/stat's "intr" line does.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/char/sclp.c')
| -rw-r--r-- | drivers/s390/char/sclp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c index 4fa21f7e2308..12c16a65dd25 100644 --- a/drivers/s390/char/sclp.c +++ b/drivers/s390/char/sclp.c @@ -400,7 +400,7 @@ static void sclp_interrupt_handler(struct ext_code ext_code, u32 finished_sccb; u32 evbuf_pending; - kstat_cpu(smp_processor_id()).irqs[EXTINT_SCP]++; + inc_irq_stat(IRQEXT_SCP); spin_lock(&sclp_lock); finished_sccb = param32 & 0xfffffff8; evbuf_pending = param32 & 0x3; @@ -813,7 +813,7 @@ static void sclp_check_handler(struct ext_code ext_code, { u32 finished_sccb; - kstat_cpu(smp_processor_id()).irqs[EXTINT_SCP]++; + inc_irq_stat(IRQEXT_SCP); finished_sccb = param32 & 0xfffffff8; /* Is this the interrupt we are waiting for? */ if (finished_sccb == 0) |