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-rw-r--r--hmp-commands-info.hx13
-rw-r--r--include/monitor/hmp.h1
-rw-r--r--monitor/hmp-cmds.c190
3 files changed, 204 insertions, 0 deletions
diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index 834bed089e..28757768f7 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -894,3 +894,16 @@ SRST
``info via``
Show guest mos6522 VIA devices.
ERST
+
+ {
+ .name = "stats",
+ .args_type = "target:s",
+ .params = "target",
+ .help = "show statistics; target is either vm or vcpu",
+ .cmd = hmp_info_stats,
+ },
+
+SRST
+ ``stats``
+ Show runtime-collected statistics
+ERST
diff --git a/include/monitor/hmp.h b/include/monitor/hmp.h
index 96d014826a..2e89a97bd6 100644
--- a/include/monitor/hmp.h
+++ b/include/monitor/hmp.h
@@ -133,5 +133,6 @@ void hmp_info_dirty_rate(Monitor *mon, const QDict *qdict);
void hmp_calc_dirty_rate(Monitor *mon, const QDict *qdict);
void hmp_human_readable_text_helper(Monitor *mon,
HumanReadableText *(*qmp_handler)(Error **));
+void hmp_info_stats(Monitor *mon, const QDict *qdict);
#endif
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 622c783c32..04d5ee8fb7 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -40,6 +40,7 @@
#include "qapi/qapi-commands-pci.h"
#include "qapi/qapi-commands-rocker.h"
#include "qapi/qapi-commands-run-state.h"
+#include "qapi/qapi-commands-stats.h"
#include "qapi/qapi-commands-tpm.h"
#include "qapi/qapi-commands-ui.h"
#include "qapi/qapi-visit-net.h"
@@ -52,6 +53,7 @@
#include "ui/console.h"
#include "qemu/cutils.h"
#include "qemu/error-report.h"
+#include "hw/core/cpu.h"
#include "hw/intc/intc.h"
#include "migration/snapshot.h"
#include "migration/misc.h"
@@ -2239,3 +2241,191 @@ void hmp_info_memory_size_summary(Monitor *mon, const QDict *qdict)
}
hmp_handle_error(mon, err);
}
+
+static void print_stats_schema_value(Monitor *mon, StatsSchemaValue *value)
+{
+ const char *unit = NULL;
+ monitor_printf(mon, " %s (%s%s", value->name, StatsType_str(value->type),
+ value->has_unit || value->exponent ? ", " : "");
+
+ if (value->has_unit) {
+ if (value->unit == STATS_UNIT_SECONDS) {
+ unit = "s";
+ } else if (value->unit == STATS_UNIT_BYTES) {
+ unit = "B";
+ }
+ }
+
+ if (unit && value->base == 10 &&
+ value->exponent >= -18 && value->exponent <= 18 &&
+ value->exponent % 3 == 0) {
+ monitor_printf(mon, "%s", si_prefix(value->exponent));
+ } else if (unit && value->base == 2 &&
+ value->exponent >= 0 && value->exponent <= 60 &&
+ value->exponent % 10 == 0) {
+
+ monitor_printf(mon, "%s", iec_binary_prefix(value->exponent));
+ } else if (value->exponent) {
+ /* Use exponential notation and write the unit's English name */
+ monitor_printf(mon, "* %d^%d%s",
+ value->base, value->exponent,
+ value->has_unit ? " " : "");
+ unit = NULL;
+ }
+
+ if (value->has_unit) {
+ monitor_printf(mon, "%s", unit ? unit : StatsUnit_str(value->unit));
+ }
+
+ /* Print bucket size for linear histograms */
+ if (value->type == STATS_TYPE_LINEAR_HISTOGRAM && value->has_bucket_size) {
+ monitor_printf(mon, ", bucket size=%d", value->bucket_size);
+ }
+ monitor_printf(mon, ")");
+}
+
+static StatsSchemaValueList *find_schema_value_list(
+ StatsSchemaList *list, StatsProvider provider,
+ StatsTarget target)
+{
+ StatsSchemaList *node;
+
+ for (node = list; node; node = node->next) {
+ if (node->value->provider == provider &&
+ node->value->target == target) {
+ return node->value->stats;
+ }
+ }
+ return NULL;
+}
+
+static void print_stats_results(Monitor *mon, StatsTarget target,
+ StatsResult *result,
+ StatsSchemaList *schema)
+{
+ /* Find provider schema */
+ StatsSchemaValueList *schema_value_list =
+ find_schema_value_list(schema, result->provider, target);
+ StatsList *stats_list;
+
+ if (!schema_value_list) {
+ monitor_printf(mon, "failed to find schema list for %s\n",
+ StatsProvider_str(result->provider));
+ return;
+ }
+
+ monitor_printf(mon, "provider: %s\n",
+ StatsProvider_str(result->provider));
+
+ for (stats_list = result->stats; stats_list;
+ stats_list = stats_list->next,
+ schema_value_list = schema_value_list->next) {
+
+ Stats *stats = stats_list->value;
+ StatsValue *stats_value = stats->value;
+ StatsSchemaValue *schema_value = schema_value_list->value;
+
+ /* Find schema entry */
+ while (!g_str_equal(stats->name, schema_value->name)) {
+ if (!schema_value_list->next) {
+ monitor_printf(mon, "failed to find schema entry for %s\n",
+ stats->name);
+ return;
+ }
+ schema_value_list = schema_value_list->next;
+ schema_value = schema_value_list->value;
+ }
+
+ print_stats_schema_value(mon, schema_value);
+
+ if (stats_value->type == QTYPE_QNUM) {
+ monitor_printf(mon, ": %" PRId64 "\n", stats_value->u.scalar);
+ } else if (stats_value->type == QTYPE_QLIST) {
+ uint64List *list;
+ int i;
+
+ monitor_printf(mon, ": ");
+ for (list = stats_value->u.list, i = 1;
+ list;
+ list = list->next, i++) {
+ monitor_printf(mon, "[%d]=%" PRId64 " ", i, list->value);
+ }
+ monitor_printf(mon, "\n");
+ }
+ }
+}
+
+/* Create the StatsFilter that is needed for an "info stats" invocation. */
+static StatsFilter *stats_filter(StatsTarget target, int cpu_index)
+{
+ StatsFilter *filter = g_malloc0(sizeof(*filter));
+
+ filter->target = target;
+ switch (target) {
+ case STATS_TARGET_VM:
+ break;
+ case STATS_TARGET_VCPU:
+ {
+ strList *vcpu_list = NULL;
+ CPUState *cpu = qemu_get_cpu(cpu_index);
+ char *canonical_path = object_get_canonical_path(OBJECT(cpu));
+
+ QAPI_LIST_PREPEND(vcpu_list, canonical_path);
+ filter->u.vcpu.has_vcpus = true;
+ filter->u.vcpu.vcpus = vcpu_list;
+ break;
+ }
+ default:
+ break;
+ }
+ return filter;
+}
+
+void hmp_info_stats(Monitor *mon, const QDict *qdict)
+{
+ const char *target_str = qdict_get_str(qdict, "target");
+ StatsTarget target;
+ Error *err = NULL;
+ g_autoptr(StatsSchemaList) schema = NULL;
+ g_autoptr(StatsResultList) stats = NULL;
+ g_autoptr(StatsFilter) filter = NULL;
+ StatsResultList *entry;
+
+ target = qapi_enum_parse(&StatsTarget_lookup, target_str, -1, &err);
+ if (err) {
+ monitor_printf(mon, "invalid stats target %s\n", target_str);
+ goto exit_no_print;
+ }
+
+ schema = qmp_query_stats_schemas(&err);
+ if (err) {
+ goto exit;
+ }
+
+ switch (target) {
+ case STATS_TARGET_VM:
+ filter = stats_filter(target, -1);
+ break;
+ case STATS_TARGET_VCPU: {}
+ int cpu_index = monitor_get_cpu_index(mon);
+ filter = stats_filter(target, cpu_index);
+ break;
+ default:
+ abort();
+ }
+
+ stats = qmp_query_stats(filter, &err);
+ if (err) {
+ goto exit;
+ }
+ for (entry = stats; entry; entry = entry->next) {
+ print_stats_results(mon, target, entry->value, schema);
+ }
+
+exit:
+ if (err) {
+ monitor_printf(mon, "%s\n", error_get_pretty(err));
+ }
+exit_no_print:
+ error_free(err);
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-12 21:51:10 +0000