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-rw-r--r--accel/tcg/cpu-exec.c37
-rw-r--r--accel/tcg/hmp.c15
-rw-r--r--accel/tcg/translate-all.c80
-rw-r--r--include/exec/cpu-all.h4
-rw-r--r--include/tcg/tcg.h2
-rw-r--r--qapi/machine.json13
-rw-r--r--tcg/tcg.c88
-rw-r--r--tests/qtest/qmp-cmd-test.c2
8 files changed, 140 insertions, 101 deletions
diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index c9764c1..4212645 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -20,6 +20,9 @@
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qemu/qemu-print.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-machine.h"
+#include "qapi/type-helpers.h"
#include "hw/core/tcg-cpu-ops.h"
#include "trace.h"
#include "disas/disas.h"
@@ -38,6 +41,7 @@
#include "exec/cpu-all.h"
#include "sysemu/cpu-timers.h"
#include "sysemu/replay.h"
+#include "sysemu/tcg.h"
#include "exec/helper-proto.h"
#include "tb-hash.h"
#include "tb-context.h"
@@ -1028,23 +1032,38 @@ void tcg_exec_unrealizefn(CPUState *cpu)
#ifndef CONFIG_USER_ONLY
-void dump_drift_info(void)
+void dump_drift_info(GString *buf)
{
if (!icount_enabled()) {
return;
}
- qemu_printf("Host - Guest clock %"PRIi64" ms\n",
- (cpu_get_clock() - icount_get()) / SCALE_MS);
+ g_string_append_printf(buf, "Host - Guest clock %"PRIi64" ms\n",
+ (cpu_get_clock() - icount_get()) / SCALE_MS);
if (icount_align_option) {
- qemu_printf("Max guest delay %"PRIi64" ms\n",
- -max_delay / SCALE_MS);
- qemu_printf("Max guest advance %"PRIi64" ms\n",
- max_advance / SCALE_MS);
+ g_string_append_printf(buf, "Max guest delay %"PRIi64" ms\n",
+ -max_delay / SCALE_MS);
+ g_string_append_printf(buf, "Max guest advance %"PRIi64" ms\n",
+ max_advance / SCALE_MS);
} else {
- qemu_printf("Max guest delay NA\n");
- qemu_printf("Max guest advance NA\n");
+ g_string_append_printf(buf, "Max guest delay NA\n");
+ g_string_append_printf(buf, "Max guest advance NA\n");
}
}
+HumanReadableText *qmp_x_query_jit(Error **errp)
+{
+ g_autoptr(GString) buf = g_string_new("");
+
+ if (!tcg_enabled()) {
+ error_setg(errp, "JIT information is only available with accel=tcg");
+ return NULL;
+ }
+
+ dump_exec_info(buf);
+ dump_drift_info(buf);
+
+ return human_readable_text_from_str(buf);
+}
+
#endif /* !CONFIG_USER_ONLY */
diff --git a/accel/tcg/hmp.c b/accel/tcg/hmp.c
index a6e72fd..01c767a 100644
--- a/accel/tcg/hmp.c
+++ b/accel/tcg/hmp.c
@@ -1,20 +1,11 @@
#include "qemu/osdep.h"
#include "qemu/error-report.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-machine.h"
#include "exec/exec-all.h"
#include "monitor/monitor.h"
#include "sysemu/tcg.h"
-static void hmp_info_jit(Monitor *mon, const QDict *qdict)
-{
- if (!tcg_enabled()) {
- error_report("JIT information is only available with accel=tcg");
- return;
- }
-
- dump_exec_info();
- dump_drift_info();
-}
-
static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
{
dump_opcount_info();
@@ -22,7 +13,7 @@ static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
static void hmp_tcg_register(void)
{
- monitor_register_hmp("jit", true, hmp_info_jit);
+ monitor_register_hmp_info_hrt("jit", qmp_x_query_jit);
monitor_register_hmp("opcount", true, hmp_info_opcount);
}
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index fb9ebfa..8f17a91 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -1991,7 +1991,7 @@ void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr)
cpu_loop_exit_noexc(cpu);
}
-static void print_qht_statistics(struct qht_stats hst)
+static void print_qht_statistics(struct qht_stats hst, GString *buf)
{
uint32_t hgram_opts;
size_t hgram_bins;
@@ -2000,9 +2000,11 @@ static void print_qht_statistics(struct qht_stats hst)
if (!hst.head_buckets) {
return;
}
- qemu_printf("TB hash buckets %zu/%zu (%0.2f%% head buckets used)\n",
- hst.used_head_buckets, hst.head_buckets,
- (double)hst.used_head_buckets / hst.head_buckets * 100);
+ g_string_append_printf(buf, "TB hash buckets %zu/%zu "
+ "(%0.2f%% head buckets used)\n",
+ hst.used_head_buckets, hst.head_buckets,
+ (double)hst.used_head_buckets /
+ hst.head_buckets * 100);
hgram_opts = QDIST_PR_BORDER | QDIST_PR_LABELS;
hgram_opts |= QDIST_PR_100X | QDIST_PR_PERCENT;
@@ -2010,8 +2012,9 @@ static void print_qht_statistics(struct qht_stats hst)
hgram_opts |= QDIST_PR_NODECIMAL;
}
hgram = qdist_pr(&hst.occupancy, 10, hgram_opts);
- qemu_printf("TB hash occupancy %0.2f%% avg chain occ. Histogram: %s\n",
- qdist_avg(&hst.occupancy) * 100, hgram);
+ g_string_append_printf(buf, "TB hash occupancy %0.2f%% avg chain occ. "
+ "Histogram: %s\n",
+ qdist_avg(&hst.occupancy) * 100, hgram);
g_free(hgram);
hgram_opts = QDIST_PR_BORDER | QDIST_PR_LABELS;
@@ -2023,8 +2026,9 @@ static void print_qht_statistics(struct qht_stats hst)
hgram_opts |= QDIST_PR_NODECIMAL | QDIST_PR_NOBINRANGE;
}
hgram = qdist_pr(&hst.chain, hgram_bins, hgram_opts);
- qemu_printf("TB hash avg chain %0.3f buckets. Histogram: %s\n",
- qdist_avg(&hst.chain), hgram);
+ g_string_append_printf(buf, "TB hash avg chain %0.3f buckets. "
+ "Histogram: %s\n",
+ qdist_avg(&hst.chain), hgram);
g_free(hgram);
}
@@ -2061,7 +2065,7 @@ static gboolean tb_tree_stats_iter(gpointer key, gpointer value, gpointer data)
return false;
}
-void dump_exec_info(void)
+void dump_exec_info(GString *buf)
{
struct tb_tree_stats tst = {};
struct qht_stats hst;
@@ -2070,44 +2074,48 @@ void dump_exec_info(void)
tcg_tb_foreach(tb_tree_stats_iter, &tst);
nb_tbs = tst.nb_tbs;
/* XXX: avoid using doubles ? */
- qemu_printf("Translation buffer state:\n");
+ g_string_append_printf(buf, "Translation buffer state:\n");
/*
* Report total code size including the padding and TB structs;
* otherwise users might think "-accel tcg,tb-size" is not honoured.
* For avg host size we use the precise numbers from tb_tree_stats though.
*/
- qemu_printf("gen code size %zu/%zu\n",
- tcg_code_size(), tcg_code_capacity());
- qemu_printf("TB count %zu\n", nb_tbs);
- qemu_printf("TB avg target size %zu max=%zu bytes\n",
- nb_tbs ? tst.target_size / nb_tbs : 0,
- tst.max_target_size);
- qemu_printf("TB avg host size %zu bytes (expansion ratio: %0.1f)\n",
- nb_tbs ? tst.host_size / nb_tbs : 0,
- tst.target_size ? (double)tst.host_size / tst.target_size : 0);
- qemu_printf("cross page TB count %zu (%zu%%)\n", tst.cross_page,
- nb_tbs ? (tst.cross_page * 100) / nb_tbs : 0);
- qemu_printf("direct jump count %zu (%zu%%) (2 jumps=%zu %zu%%)\n",
- tst.direct_jmp_count,
- nb_tbs ? (tst.direct_jmp_count * 100) / nb_tbs : 0,
- tst.direct_jmp2_count,
- nb_tbs ? (tst.direct_jmp2_count * 100) / nb_tbs : 0);
+ g_string_append_printf(buf, "gen code size %zu/%zu\n",
+ tcg_code_size(), tcg_code_capacity());
+ g_string_append_printf(buf, "TB count %zu\n", nb_tbs);
+ g_string_append_printf(buf, "TB avg target size %zu max=%zu bytes\n",
+ nb_tbs ? tst.target_size / nb_tbs : 0,
+ tst.max_target_size);
+ g_string_append_printf(buf, "TB avg host size %zu bytes "
+ "(expansion ratio: %0.1f)\n",
+ nb_tbs ? tst.host_size / nb_tbs : 0,
+ tst.target_size ?
+ (double)tst.host_size / tst.target_size : 0);
+ g_string_append_printf(buf, "cross page TB count %zu (%zu%%)\n",
+ tst.cross_page,
+ nb_tbs ? (tst.cross_page * 100) / nb_tbs : 0);
+ g_string_append_printf(buf, "direct jump count %zu (%zu%%) "
+ "(2 jumps=%zu %zu%%)\n",
+ tst.direct_jmp_count,
+ nb_tbs ? (tst.direct_jmp_count * 100) / nb_tbs : 0,
+ tst.direct_jmp2_count,
+ nb_tbs ? (tst.direct_jmp2_count * 100) / nb_tbs : 0);
qht_statistics_init(&tb_ctx.htable, &hst);
- print_qht_statistics(hst);
+ print_qht_statistics(hst, buf);
qht_statistics_destroy(&hst);
- qemu_printf("\nStatistics:\n");
- qemu_printf("TB flush count %u\n",
- qatomic_read(&tb_ctx.tb_flush_count));
- qemu_printf("TB invalidate count %u\n",
- qatomic_read(&tb_ctx.tb_phys_invalidate_count));
+ g_string_append_printf(buf, "\nStatistics:\n");
+ g_string_append_printf(buf, "TB flush count %u\n",
+ qatomic_read(&tb_ctx.tb_flush_count));
+ g_string_append_printf(buf, "TB invalidate count %u\n",
+ qatomic_read(&tb_ctx.tb_phys_invalidate_count));
tlb_flush_counts(&flush_full, &flush_part, &flush_elide);
- qemu_printf("TLB full flushes %zu\n", flush_full);
- qemu_printf("TLB partial flushes %zu\n", flush_part);
- qemu_printf("TLB elided flushes %zu\n", flush_elide);
- tcg_dump_info();
+ g_string_append_printf(buf, "TLB full flushes %zu\n", flush_full);
+ g_string_append_printf(buf, "TLB partial flushes %zu\n", flush_part);
+ g_string_append_printf(buf, "TLB elided flushes %zu\n", flush_elide);
+ tcg_dump_info(buf);
}
void dump_opcount_info(void)
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
index 32cfb63..d92f6fa 100644
--- a/include/exec/cpu-all.h
+++ b/include/exec/cpu-all.h
@@ -429,9 +429,9 @@ static inline bool tlb_hit(target_ulong tlb_addr, target_ulong addr)
#ifdef CONFIG_TCG
/* accel/tcg/cpu-exec.c */
-void dump_drift_info(void);
+void dump_drift_info(GString *buf);
/* accel/tcg/translate-all.c */
-void dump_exec_info(void);
+void dump_exec_info(GString *buf);
void dump_opcount_info(void);
#endif /* CONFIG_TCG */
diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h
index 7069a40..7c8019a 100644
--- a/include/tcg/tcg.h
+++ b/include/tcg/tcg.h
@@ -937,7 +937,7 @@ int tcg_check_temp_count(void);
#endif
int64_t tcg_cpu_exec_time(void);
-void tcg_dump_info(void);
+void tcg_dump_info(GString *buf);
void tcg_dump_op_count(void);
#define TCG_CT_CONST 1 /* any constant of register size */
diff --git a/qapi/machine.json b/qapi/machine.json
index ca49358..422a446 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -1425,6 +1425,19 @@
'returns': 'HumanReadableText' }
##
+# @x-query-jit:
+#
+# Query TCG compiler statistics
+#
+# Returns: TCG compiler statistics
+#
+# Since: 6.2
+##
+{ 'command': 'x-query-jit',
+ 'returns': 'HumanReadableText',
+ 'if': 'CONFIG_TCG' }
+
+##
# @x-query-numa:
#
# Query NUMA topology information
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 6332cdc..f9ede8e 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -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
diff --git a/tests/qtest/qmp-cmd-test.c b/tests/qtest/qmp-cmd-test.c
index 0d52ea6..ea24fde 100644
--- a/tests/qtest/qmp-cmd-test.c
+++ b/tests/qtest/qmp-cmd-test.c
@@ -51,6 +51,8 @@ static int query_error_class(const char *cmd)
#endif
/* Only valid with a USB bus added */
{ "x-query-usb", ERROR_CLASS_GENERIC_ERROR },
+ /* Only valid with accel=tcg */
+ { "x-query-jit", ERROR_CLASS_GENERIC_ERROR },
{ NULL, -1 }
};
int i;
generated by cgit v1.1 at 2024-12-23 08:46:44 +0000