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qapi: introduce x-query-jit QMP command

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This is a counterpart to the HMP "info jit" command. It is being
added with an "x-" prefix because this QMP command is intended as an
ad hoc 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>
This commit is contained in:
Daniel P. Berrangé 2021-09-08 10:35:43 +01:00
parent 91f2fa7045
commit 3a841ab53f
8 changed files with 140 additions and 101 deletions
Download patch file Download diff file Expand all files Collapse all files

88
tcg/tcg.c
View file

@ -4383,7 +4383,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
}
#ifdef CONFIG_PROFILER
void tcg_dump_info(void)
void tcg_dump_info(GString *buf)
{
TCGProfile prof = {};
const TCGProfile *s;
@ -4397,53 +4397,59 @@ void tcg_dump_info(void)
tb_div_count = tb_count ? tb_count : 1;
tot = s->interm_time + s->code_time;
qemu_printf("JIT cycles %" PRId64 " (%0.3f s at 2.4 GHz)\n",
tot, tot / 2.4e9);
qemu_printf("translated TBs %" PRId64 " (aborted=%" PRId64
" %0.1f%%)\n",
tb_count, s->tb_count1 - tb_count,
(double)(s->tb_count1 - s->tb_count)
/ (s->tb_count1 ? s->tb_count1 : 1) * 100.0);
qemu_printf("avg ops/TB %0.1f max=%d\n",
(double)s->op_count / tb_div_count, s->op_count_max);
qemu_printf("deleted ops/TB %0.2f\n",
(double)s->del_op_count / tb_div_count);
qemu_printf("avg temps/TB %0.2f max=%d\n",
(double)s->temp_count / tb_div_count, s->temp_count_max);
qemu_printf("avg host code/TB %0.1f\n",
(double)s->code_out_len / tb_div_count);
qemu_printf("avg search data/TB %0.1f\n",
(double)s->search_out_len / tb_div_count);
g_string_append_printf(buf, "JIT cycles %" PRId64
" (%0.3f s at 2.4 GHz)\n",
tot, tot / 2.4e9);
g_string_append_printf(buf, "translated TBs %" PRId64
" (aborted=%" PRId64 " %0.1f%%)\n",
tb_count, s->tb_count1 - tb_count,
(double)(s->tb_count1 - s->tb_count)
/ (s->tb_count1 ? s->tb_count1 : 1) * 100.0);
g_string_append_printf(buf, "avg ops/TB %0.1f max=%d\n",
(double)s->op_count / tb_div_count, s->op_count_max);
g_string_append_printf(buf, "deleted ops/TB %0.2f\n",
(double)s->del_op_count / tb_div_count);
g_string_append_printf(buf, "avg temps/TB %0.2f max=%d\n",
(double)s->temp_count / tb_div_count,
s->temp_count_max);
g_string_append_printf(buf, "avg host code/TB %0.1f\n",
(double)s->code_out_len / tb_div_count);
g_string_append_printf(buf, "avg search data/TB %0.1f\n",
(double)s->search_out_len / tb_div_count);
qemu_printf("cycles/op %0.1f\n",
s->op_count ? (double)tot / s->op_count : 0);
qemu_printf("cycles/in byte %0.1f\n",
s->code_in_len ? (double)tot / s->code_in_len : 0);
qemu_printf("cycles/out byte %0.1f\n",
s->code_out_len ? (double)tot / s->code_out_len : 0);
qemu_printf("cycles/search byte %0.1f\n",
s->search_out_len ? (double)tot / s->search_out_len : 0);
g_string_append_printf(buf, "cycles/op %0.1f\n",
s->op_count ? (double)tot / s->op_count : 0);
g_string_append_printf(buf, "cycles/in byte %0.1f\n",
s->code_in_len ? (double)tot / s->code_in_len : 0);
g_string_append_printf(buf, "cycles/out byte %0.1f\n",
s->code_out_len ? (double)tot / s->code_out_len : 0);
g_string_append_printf(buf, "cycles/search byte %0.1f\n",
s->search_out_len ?
(double)tot / s->search_out_len : 0);
if (tot == 0) {
tot = 1;
}
qemu_printf(" gen_interm time %0.1f%%\n",
(double)s->interm_time / tot * 100.0);
qemu_printf(" gen_code time %0.1f%%\n",
(double)s->code_time / tot * 100.0);
qemu_printf("optim./code time %0.1f%%\n",
(double)s->opt_time / (s->code_time ? s->code_time : 1)
* 100.0);
qemu_printf("liveness/code time %0.1f%%\n",
(double)s->la_time / (s->code_time ? s->code_time : 1) * 100.0);
qemu_printf("cpu_restore count %" PRId64 "\n",
s->restore_count);
qemu_printf(" avg cycles %0.1f\n",
s->restore_count ? (double)s->restore_time / s->restore_count : 0);
g_string_append_printf(buf, " gen_interm time %0.1f%%\n",
(double)s->interm_time / tot * 100.0);
g_string_append_printf(buf, " gen_code time %0.1f%%\n",
(double)s->code_time / tot * 100.0);
g_string_append_printf(buf, "optim./code time %0.1f%%\n",
(double)s->opt_time / (s->code_time ?
s->code_time : 1)
* 100.0);
g_string_append_printf(buf, "liveness/code time %0.1f%%\n",
(double)s->la_time / (s->code_time ?
s->code_time : 1) * 100.0);
g_string_append_printf(buf, "cpu_restore count %" PRId64 "\n",
s->restore_count);
g_string_append_printf(buf, " avg cycles %0.1f\n",
s->restore_count ?
(double)s->restore_time / s->restore_count : 0);
}
#else
void tcg_dump_info(void)
void tcg_dump_info(GString *buf)
{
qemu_printf("[TCG profiler not compiled]\n");
g_string_append_printf(buf, "[TCG profiler not compiled]\n");
}
#endif