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[S390] irqstats: split IPI interrupt accounting

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We use both the external call and emergency call IPIs to signal remote
cpus. Therefore it makes sense to account them differently withing
/proc/irqstats so we actually know what happened.

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 2011-10-30 15:17:19 +01:00 committed by Martin Schwidefsky
parent e1c4d0142d
commit 2a3a2d66aa
3 changed files with 8 additions and 3 deletions
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3
arch/s390/include/asm/irq.h
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@ -8,7 +8,8 @@ enum interruption_class {
EXTERNAL_INTERRUPT,
IO_INTERRUPT,
EXTINT_CLK,
EXTINT_IPI,
EXTINT_EXC,
EXTINT_EMS,
EXTINT_TMR,
EXTINT_TLA,
EXTINT_PFL,

3
arch/s390/kernel/irq.c
View File

@ -33,7 +33,8 @@ static const struct irq_class intrclass_names[] = {
{.name = "EXT" },
{.name = "I/O" },
{.name = "CLK", .desc = "[EXT] Clock Comparator" },
{.name = "IPI", .desc = "[EXT] Signal Processor" },
{.name = "EXC", .desc = "[EXT] External Call" },
{.name = "EMS", .desc = "[EXT] Emergency Signal" },
{.name = "TMR", .desc = "[EXT] CPU Timer" },
{.name = "TAL", .desc = "[EXT] Timing Alert" },
{.name = "PFL", .desc = "[EXT] Pseudo Page Fault" },

5
arch/s390/kernel/smp.c
View File

@ -187,7 +187,10 @@ static void do_ext_call_interrupt(unsigned int ext_int_code,
{
unsigned long bits;
kstat_cpu(smp_processor_id()).irqs[EXTINT_IPI]++;
if (ext_int_code == 0x1202)
kstat_cpu(smp_processor_id()).irqs[EXTINT_EXC]++;
else
kstat_cpu(smp_processor_id()).irqs[EXTINT_EMS]++;
/*
* handle bit signal external calls
*/