diff options
| author | Daniel P. Berrangé <berrange@redhat.com> | 2021-09-08 10:35:43 +0100 |
|---|---|---|
| committer | Daniel P. Berrangé <berrange@redhat.com> | 2021-11-02 15:55:14 +0000 |
| commit | 37087fde0e6b81bdc6aefb1cd6289d90b2095ec0 (patch) | |
| tree | e21afc9fb6d30349ffc0cc514683970fdfae8f11 /monitor/qmp-cmds.c | |
| parent | dd98234c059e6bdb05a52998270df6d3d990332e (diff) | |
qapi: introduce x-query-profile QMP command
This is a counterpart to the HMP "info profile" command. It is being
added with an "x-" prefix because this QMP command is intended as an
adhoc debugging tool and will thus not be modelled in QAPI as fully
structured data, nor will it have long term guaranteed stability.
The existing HMP command is rewritten to call the QMP command.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Diffstat (limited to 'monitor/qmp-cmds.c')
| -rw-r--r-- | monitor/qmp-cmds.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c index 5c0d5e116b..6122ad18b6 100644 --- a/monitor/qmp-cmds.c +++ b/monitor/qmp-cmds.c @@ -36,6 +36,7 @@ #include "qapi/qapi-commands-machine.h" #include "qapi/qapi-commands-misc.h" #include "qapi/qapi-commands-ui.h" +#include "qapi/type-helpers.h" #include "qapi/qmp/qerror.h" #include "hw/mem/memory-device.h" #include "hw/acpi/acpi_dev_interface.h" @@ -350,3 +351,34 @@ void qmp_display_reload(DisplayReloadOptions *arg, Error **errp) abort(); } } + +#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 |