[Qemu-devel] [PATCH 2/4] kvm-all: add kvm_run_exit tracepoint

[Stefan Hajnoczi <stefanha@redhat.com>]

From: Kazuya Saito <saito.kazuya@jp.fujitsu.com>

This patch enable us to know exit reason of KVM_RUN. It will help us
know where the trouble is caused.

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>
---
 kvm-all.c    | 1 +
 trace-events | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/kvm-all.c b/kvm-all.c
index 4f73b98..3a31602 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1627,6 +1627,7 @@ int kvm_cpu_exec(CPUArchState *env)
             abort();
         }
 
+        trace_kvm_run_exit(cpu->cpu_index, run->exit_reason);
         switch (run->exit_reason) {
         case KVM_EXIT_IO:
             DPRINTF("handle_io\n");
diff --git a/trace-events b/trace-events
index d5bc7a5..17d75ab 100644
--- a/trace-events
+++ b/trace-events
@@ -1158,3 +1158,5 @@ migrate_set_state(int new_state) "new state %d"
 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"
+kvm_run_exit(int cpu_index, uint32_t reason) "cpu_index %d, reason %d"
+
-- 
1.8.1.4