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kvm-all: add kvm_ioctl, kvm_vm_ioctl, kvm_vcpu_ioctl tracepoints 

This patch adds tracepoints at ioctl to kvm. Tracing these ioctl is
useful for clarification whether the cause of troubles is qemu or kvm.

Signed-off-by: Kazuya Saito <saito.kazuya@jp.fujitsu.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
master
Kazuya Saito 2013-03-29 13:27:05 +09:00 committed by Stefan Hajnoczi
parent 8ca27ce2e1
commit 9c7757290c
2 changed files with 9 additions and 0 deletions
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4
kvm-all.c
View File

@ -33,6 +33,7 @@
#include "exec/memory.h"
#include "exec/address-spaces.h"
#include "qemu/event_notifier.h"
#include "trace.h"
/* This check must be after config-host.h is included */
#ifdef CONFIG_EVENTFD
@ -1687,6 +1688,7 @@ int kvm_ioctl(KVMState *s, int type, ...)
arg = va_arg(ap, void *);
va_end(ap);
trace_kvm_ioctl(type, arg);
ret = ioctl(s->fd, type, arg);
if (ret == -1) {
ret = -errno;
@ -1704,6 +1706,7 @@ int kvm_vm_ioctl(KVMState *s, int type, ...)
arg = va_arg(ap, void *);
va_end(ap);
trace_kvm_vm_ioctl(type, arg);
ret = ioctl(s->vmfd, type, arg);
if (ret == -1) {
ret = -errno;
@ -1721,6 +1724,7 @@ int kvm_vcpu_ioctl(CPUState *cpu, int type, ...)
arg = va_arg(ap, void *);
va_end(ap);
trace_kvm_vcpu_ioctl(cpu->cpu_index, type, arg);
ret = ioctl(cpu->kvm_fd, type, arg);
if (ret == -1) {
ret = -errno;

5
trace-events
View File

@ -1153,3 +1153,8 @@ virtio_ccw_new_device(int cssid, int ssid, int schid, int devno, const char *dev
# migration.c
migrate_set_state(int new_state) "new state %d"
# kvm-all.c
kvm_ioctl(int type, void *arg) "type %d, arg %p"
kvm_vm_ioctl(int type, void *arg) "type %d, arg %p"
kvm_vcpu_ioctl(int cpu_index, int type, void *arg) "cpu_index %d, type %d, arg %p"