[PATCH v4 27/65] accel/hvf: Implement get_vcpu_stats()

[Philippe Mathieu-Daudé]

Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
---
 accel/hvf/hvf-accel-ops.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c
index e7f40888c26..c07ebf8a652 100644
--- a/accel/hvf/hvf-accel-ops.c
+++ b/accel/hvf/hvf-accel-ops.c
@@ -358,6 +358,12 @@ static inline int hvf_gdbstub_sstep_flags(AccelState *as)
     return SSTEP_ENABLE | SSTEP_NOIRQ;
 }
 
+static void do_hvf_get_vcpu_exec_time(CPUState *cpu, run_on_cpu_data arg)
+{
+    int r = hv_vcpu_get_exec_time(cpu->accel->fd, arg.host_ptr);
+    assert_hvf_ok(r);
+}
+
 static void hvf_accel_class_init(ObjectClass *oc, const void *data)
 {
     AccelClass *ac = ACCEL_CLASS(oc);
@@ -583,6 +589,16 @@ static void hvf_remove_all_breakpoints(CPUState *cpu)
     }
 }
 
+static void hvf_get_vcpu_stats(CPUState *cpu, GString *buf)
+{
+    uint64_t time_us; /* units of mach_absolute_time() */
+
+    run_on_cpu(cpu, do_hvf_get_vcpu_exec_time, RUN_ON_CPU_HOST_PTR(&time_us));
+
+    g_string_append_printf(buf, "HVF cumulative execution time: 
%llu.%.3llus\n",
+                                time_us / 1000000, (time_us % 1000000) / 1000);
+}
+
 static void hvf_accel_ops_class_init(ObjectClass *oc, const void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
@@ -601,7 +617,10 @@ static void hvf_accel_ops_class_init(ObjectClass *oc, 
const void *data)
     ops->remove_breakpoint = hvf_remove_breakpoint;
     ops->remove_all_breakpoints = hvf_remove_all_breakpoints;
     ops->update_guest_debug = hvf_update_guest_debug;
+
+    ops->get_vcpu_stats = hvf_get_vcpu_stats;
 };
+
 static const TypeInfo hvf_accel_ops_type = {
     .name = ACCEL_OPS_NAME("hvf"),
 
-- 
2.49.0