diff options
Diffstat (limited to 'accel/tcg/cpu-exec.c')
| -rw-r--r-- | accel/tcg/cpu-exec.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index 409ec8c38c..8b4cd6c59d 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -1090,4 +1090,35 @@ HumanReadableText *qmp_x_query_opcount(Error **errp) return human_readable_text_from_str(buf); } +#ifdef CONFIG_PROFILER + +int64_t dev_time; + +HumanReadableText *qmp_x_query_profile(Error **errp) +{ + g_autoptr(GString) buf = g_string_new(""); + static int64_t last_cpu_exec_time; + int64_t cpu_exec_time; + int64_t delta; + + cpu_exec_time = tcg_cpu_exec_time(); + delta = cpu_exec_time - last_cpu_exec_time; + + g_string_append_printf(buf, "async time %" PRId64 " (%0.3f)\n", + dev_time, dev_time / (double)NANOSECONDS_PER_SECOND); + g_string_append_printf(buf, "qemu time %" PRId64 " (%0.3f)\n", + delta, delta / (double)NANOSECONDS_PER_SECOND); + last_cpu_exec_time = cpu_exec_time; + dev_time = 0; + + return human_readable_text_from_str(buf); +} +#else +HumanReadableText *qmp_x_query_profile(Error **errp) +{ + error_setg(errp, "Internal profiler not compiled"); + return NULL; +} +#endif + #endif /* !CONFIG_USER_ONLY */ |