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qapi: introduce x-query-irq QMP command

Browse source 
This is a counterpart to the HMP "info irq" 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>
This commit is contained in:
Daniel P. Berrangé 2021-09-08 10:35:43 +01:00
parent ca411b7c8a
commit 91f2fa7045
4 changed files with 57 additions and 39 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
hmp-commands-info.hx
View file

@ -159,7 +159,7 @@ ERST
.args_type = "",
.params = "",
.help = "show the interrupts statistics (if available)",
.cmd = hmp_info_irq,
.cmd_info_hrt = qmp_x_query_irq,
},
SRST

38
monitor/hmp-cmds.c
View file

@ -784,44 +784,6 @@ static void hmp_info_pci_device(Monitor *mon, const PciDeviceInfo *dev)
}
}
static int hmp_info_irq_foreach(Object *obj, void *opaque)
{
InterruptStatsProvider *intc;
InterruptStatsProviderClass *k;
Monitor *mon = opaque;
if (object_dynamic_cast(obj, TYPE_INTERRUPT_STATS_PROVIDER)) {
intc = INTERRUPT_STATS_PROVIDER(obj);
k = INTERRUPT_STATS_PROVIDER_GET_CLASS(obj);
uint64_t *irq_counts;
unsigned int nb_irqs, i;
if (k->get_statistics &&
k->get_statistics(intc, &irq_counts, &nb_irqs)) {
if (nb_irqs > 0) {
monitor_printf(mon, "IRQ statistics for %s:\n",
object_get_typename(obj));
for (i = 0; i < nb_irqs; i++) {
if (irq_counts[i] > 0) {
monitor_printf(mon, "%2d: %" PRId64 "\n", i,
irq_counts[i]);
}
}
}
} else {
monitor_printf(mon, "IRQ statistics not available for %s.\n",
object_get_typename(obj));
}
}
return 0;
}
void hmp_info_irq(Monitor *mon, const QDict *qdict)
{
object_child_foreach_recursive(object_get_root(),
hmp_info_irq_foreach, mon);
}
static int hmp_info_pic_foreach(Object *obj, void *opaque)
{
InterruptStatsProvider *intc;

44
monitor/qmp-cmds.c
View file

@ -41,6 +41,7 @@
#include "exec/ramlist.h"
#include "hw/mem/memory-device.h"
#include "hw/acpi/acpi_dev_interface.h"
#include "hw/intc/intc.h"
#include "hw/rdma/rdma.h"
NameInfo *qmp_query_name(Error **errp)
@ -422,3 +423,46 @@ HumanReadableText *qmp_x_query_ramblock(Error **errp)
return human_readable_text_from_str(buf);
}
static int qmp_x_query_irq_foreach(Object *obj, void *opaque)
{
InterruptStatsProvider *intc;
InterruptStatsProviderClass *k;
GString *buf = opaque;
if (object_dynamic_cast(obj, TYPE_INTERRUPT_STATS_PROVIDER)) {
intc = INTERRUPT_STATS_PROVIDER(obj);
k = INTERRUPT_STATS_PROVIDER_GET_CLASS(obj);
uint64_t *irq_counts;
unsigned int nb_irqs, i;
if (k->get_statistics &&
k->get_statistics(intc, &irq_counts, &nb_irqs)) {
if (nb_irqs > 0) {
g_string_append_printf(buf, "IRQ statistics for %s:\n",
object_get_typename(obj));
for (i = 0; i < nb_irqs; i++) {
if (irq_counts[i] > 0) {
g_string_append_printf(buf, "%2d: %" PRId64 "\n", i,
irq_counts[i]);
}
}
}
} else {
g_string_append_printf(buf,
"IRQ statistics not available for %s.\n",
object_get_typename(obj));
}
}
return 0;
}
HumanReadableText *qmp_x_query_irq(Error **errp)
{
g_autoptr(GString) buf = g_string_new("");
object_child_foreach_recursive(object_get_root(),
qmp_x_query_irq_foreach, buf);
return human_readable_text_from_str(buf);
}

12
qapi/machine.json
View file

@ -1412,6 +1412,18 @@
'*threads': 'int',
'*maxcpus': 'int' } }
##
# @x-query-irq:
#
# Query interrupt statistics
#
# Returns: interrupt statistics
#
# Since: 6.2
##
{ 'command': 'x-query-irq',
'returns': 'HumanReadableText' }
##
# @x-query-numa:
#