Commit 9c775729 authored by Kazuya Saito's avatar Kazuya Saito Committed by Stefan Hajnoczi
Browse files

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: default avatarKazuya Saito <saito.kazuya@jp.fujitsu.com>
Reviewed-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
parent 8ca27ce2

kvm-all.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

trace-events

+5 −0
Original line number Diff line number Diff line
@@ -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"