e726acd5b8
Currently we report whether the TCG accelerator is in 'one-insn-per-tb' mode in the 'info status' output. This is a pretty minor piece of TCG specific information, and we want to deprecate the 'singlestep' field of the associated QMP command. Move the 'one-insn-per-tb' reporting to 'info jit'. We don't need a deprecate-and-drop period for this because the HMP interface has no stability guarantees. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20230417164041.684562-8-peter.maydell@linaro.org
121 lines
3.2 KiB
C
121 lines
3.2 KiB
C
/*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* QEMU TCG monitor
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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*/
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#include "qemu/osdep.h"
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#include "qemu/accel.h"
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#include "qapi/error.h"
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#include "qapi/type-helpers.h"
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#include "qapi/qapi-commands-machine.h"
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#include "monitor/monitor.h"
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#include "sysemu/cpus.h"
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#include "sysemu/cpu-timers.h"
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#include "sysemu/tcg.h"
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#include "internal.h"
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static void dump_drift_info(GString *buf)
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{
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if (!icount_enabled()) {
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return;
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}
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g_string_append_printf(buf, "Host - Guest clock %"PRIi64" ms\n",
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(cpu_get_clock() - icount_get()) / SCALE_MS);
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if (icount_align_option) {
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g_string_append_printf(buf, "Max guest delay %"PRIi64" ms\n",
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-max_delay / SCALE_MS);
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g_string_append_printf(buf, "Max guest advance %"PRIi64" ms\n",
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max_advance / SCALE_MS);
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} else {
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g_string_append_printf(buf, "Max guest delay NA\n");
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g_string_append_printf(buf, "Max guest advance NA\n");
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}
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}
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static void dump_accel_info(GString *buf)
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{
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AccelState *accel = current_accel();
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bool one_insn_per_tb = object_property_get_bool(OBJECT(accel),
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"one-insn-per-tb",
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&error_fatal);
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g_string_append_printf(buf, "Accelerator settings:\n");
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g_string_append_printf(buf, "one-insn-per-tb: %s\n\n",
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one_insn_per_tb ? "on" : "off");
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}
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HumanReadableText *qmp_x_query_jit(Error **errp)
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{
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g_autoptr(GString) buf = g_string_new("");
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if (!tcg_enabled()) {
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error_setg(errp, "JIT information is only available with accel=tcg");
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return NULL;
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}
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dump_accel_info(buf);
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dump_exec_info(buf);
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dump_drift_info(buf);
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return human_readable_text_from_str(buf);
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}
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HumanReadableText *qmp_x_query_opcount(Error **errp)
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{
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g_autoptr(GString) buf = g_string_new("");
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if (!tcg_enabled()) {
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error_setg(errp,
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"Opcode count information is only available with accel=tcg");
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return NULL;
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}
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tcg_dump_op_count(buf);
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return human_readable_text_from_str(buf);
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}
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#ifdef CONFIG_PROFILER
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int64_t dev_time;
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HumanReadableText *qmp_x_query_profile(Error **errp)
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{
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g_autoptr(GString) buf = g_string_new("");
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static int64_t last_cpu_exec_time;
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int64_t cpu_exec_time;
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int64_t delta;
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cpu_exec_time = tcg_cpu_exec_time();
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delta = cpu_exec_time - last_cpu_exec_time;
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g_string_append_printf(buf, "async time %" PRId64 " (%0.3f)\n",
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dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
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g_string_append_printf(buf, "qemu time %" PRId64 " (%0.3f)\n",
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delta, delta / (double)NANOSECONDS_PER_SECOND);
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last_cpu_exec_time = cpu_exec_time;
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dev_time = 0;
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return human_readable_text_from_str(buf);
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}
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#else
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HumanReadableText *qmp_x_query_profile(Error **errp)
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{
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error_setg(errp, "Internal profiler not compiled");
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return NULL;
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}
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#endif
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static void hmp_tcg_register(void)
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{
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monitor_register_hmp_info_hrt("jit", qmp_x_query_jit);
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monitor_register_hmp_info_hrt("opcount", qmp_x_query_opcount);
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}
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type_init(hmp_tcg_register);
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