xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

s390/diag: add a statistic for diagnose calls

Browse Source 
Introduce /sys/debug/kernel/diag_stat with a statistic how many diagnose
calls have been done by each CPU in the system.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2015-08-20 17:28:44 +02:00
parent acdc9fc9a8
commit 1ec2772e0c
19 changed files with 282 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/s390/virtio/virtio_ccw.c
View File

@@ -28,6 +28,7 @@
#include <linux/io.h>
#include <linux/kvm_para.h>
#include <linux/notifier.h>
#include <asm/diag.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/cio.h>
@@ -366,9 +367,9 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
kfree(thinint_area);
}
static inline long do_kvm_notify(struct subchannel_id schid,
unsigned long queue_index,
long cookie)
static inline long __do_kvm_notify(struct subchannel_id schid,
unsigned long queue_index,
long cookie)
{
register unsigned long __nr asm("1") = KVM_S390_VIRTIO_CCW_NOTIFY;
register struct subchannel_id __schid asm("2") = schid;
@@ -383,6 +384,14 @@ static inline long do_kvm_notify(struct subchannel_id schid,
return __rc;
}
static inline long do_kvm_notify(struct subchannel_id schid,
unsigned long queue_index,
long cookie)
{
diag_stat_inc(DIAG_STAT_X500);
return __do_kvm_notify(schid, queue_index, cookie);
}
static bool virtio_ccw_kvm_notify(struct virtqueue *vq)
{
struct virtio_ccw_vq_info *info = vq->priv;