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authorHeiko Carstens <heiko.carstens@de.ibm.com>2011-10-30 15:17:19 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-10-30 15:16:47 +0100
commit2a3a2d66aa4e5abaf8f9222d21735321f02a00dc (patch)
tree92606986642a9cee1561f532c53f4b7ca956ef2f /arch/s390
parente1c4d0142d32f97706b752d94c9e20c3f21901f8 (diff)
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op-kernel-dev-2a3a2d66aa4e5abaf8f9222d21735321f02a00dc.tar.gz
[S390] irqstats: split IPI interrupt accounting
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>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/irq.h3
-rw-r--r--arch/s390/kernel/irq.c3
-rw-r--r--arch/s390/kernel/smp.c5
3 files changed, 8 insertions, 3 deletions
diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h
index eadfa9f..ba6d85f 100644
--- a/arch/s390/include/asm/irq.h
+++ b/arch/s390/include/asm/irq.h
@@ -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,
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 30faaef..b9a7fdd 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -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" },
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 3bde568..3ea8728 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -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
*/
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