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authorHeiko Carstens <heiko.carstens@de.ibm.com>2011-01-05 12:47:28 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-05 12:47:25 +0100
commit052ff461c8427629aee887ccc27478fc7373237c (patch)
tree1b2cae2956cc94c5b32730d467e20ff447b8c072 /arch/s390/mm
parent545b288dcbdea58a2ce2afba5f6a8302d31ac459 (diff)
downloadlinux-linaro-android-052ff461c8427629aee887ccc27478fc7373237c.tar.gz
[S390] irq: have detailed statistics for interrupt types
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>
Diffstat (limited to 'arch/s390/mm')
-rw-r--r--arch/s390/mm/fault.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index fe5701e9efb..839b16df72b 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -10,6 +10,7 @@
* Copyright (C) 1995 Linus Torvalds
*/
+#include <linux/kernel_stat.h>
#include <linux/perf_event.h>
#include <linux/signal.h>
#include <linux/sched.h>
@@ -543,6 +544,7 @@ static void pfault_interrupt(unsigned int ext_int_code,
struct task_struct *tsk;
__u16 subcode;
+ kstat_cpu(smp_processor_id()).irqs[EXTINT_PFL]++;
/*
* Get the external interruption subcode & pfault
* initial/completion signal bit. VM stores this