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authorHeiko Carstens <heiko.carstens@de.ibm.com>2011-01-05 14:47:28 +0300
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-05 14:47:25 +0300
commit052ff461c8427629aee887ccc27478fc7373237c (patch)
tree1b2cae2956cc94c5b32730d467e20ff447b8c072 /drivers/s390/kvm/kvm_virtio.c
parent545b288dcbdea58a2ce2afba5f6a8302d31ac459 (diff)
downloadlinux-052ff461c8427629aee887ccc27478fc7373237c.tar.xz
[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 'drivers/s390/kvm/kvm_virtio.c')
-rw-r--r--drivers/s390/kvm/kvm_virtio.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 375aeeaf9ea5..414427d64a8f 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -10,6 +10,7 @@
* Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
*/
+#include <linux/kernel_stat.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/err.h>
@@ -25,6 +26,7 @@
#include <asm/kvm_virtio.h>
#include <asm/setup.h>
#include <asm/s390_ext.h>
+#include <asm/irq.h>
#define VIRTIO_SUBCODE_64 0x0D00
@@ -379,6 +381,7 @@ static void kvm_extint_handler(unsigned int ext_int_code,
u16 subcode;
u32 param;
+ kstat_cpu(smp_processor_id()).irqs[EXTINT_VRT]++;
subcode = ext_int_code >> 16;
if ((subcode & 0xff00) != VIRTIO_SUBCODE_64)
return;