From patchwork Fri May 3 12:01:22 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [1/4] kvm-all: add kvm_ioctl, kvm_vm_ioctl, kvm_vcpu_ioctl tracepoints X-Patchwork-Submitter: Stefan Hajnoczi X-Patchwork-Id: 241289 Message-Id: <1367582485-15579-2-git-send-email-stefanha@redhat.com> To: Cc: Anthony Liguori , Kazuya Saito , Stefan Hajnoczi Date: Fri, 3 May 2013 14:01:22 +0200 From: Stefan Hajnoczi List-Id: From: Kazuya Saito 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 Reviewed-by: Paolo Bonzini Signed-off-by: Stefan Hajnoczi --- kvm-all.c | 4 ++++ trace-events | 5 +++++ 2 files changed, 9 insertions(+) diff --git a/kvm-all.c b/kvm-all.c index f6c0f4a..4f73b98 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -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; diff --git a/trace-events b/trace-events index 55e80be..d5bc7a5 100644 --- a/trace-events +++ b/trace-events @@ -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"