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xemu/tests/cpu-plug-test.c
Igor Mammedov bc1fb850a3 vl.c deprecate incorrect CPUs topology 
-smp [cpus],sockets/cores/threads[,maxcpus] should describe topology
so that total number of logical CPUs [sockets * cores * threads]
would be equal to [maxcpus], however historically we didn't have
such check in QEMU and it is possible to start VM with an invalid
topology.
Deprecate invalid options combination so we can make sure that
the topology VM started with is always correct in the future.
Users with an invalid sockets/cores/threads/maxcpus values should
fix their CLI to make sure that
   [sockets * cores * threads] == [maxcpus]

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <1536836762-273036-2-git-send-email-imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[ehabkost: squashed unit test fix]
Message-Id: <20181019215345.521d58d7@igors-macbook-pro.local>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-10-24 06:44:59 -03:00

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/*
* QTest testcase for CPU plugging
*
* Copyright (c) 2015 SUSE Linux GmbH
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "libqtest.h"
#include "qapi/qmp/qdict.h"
struct PlugTestData {
char *machine;
const char *cpu_model;
char *device_model;
unsigned sockets;
unsigned cores;
unsigned threads;
unsigned maxcpus;
};
typedef struct PlugTestData PlugTestData;
static void test_plug_with_cpu_add(gconstpointer data)
{
const PlugTestData *s = data;
char *args;
QDict *response;
unsigned int i;
args = g_strdup_printf("-machine %s -cpu %s "
"-smp 1,sockets=%u,cores=%u,threads=%u,maxcpus=%u",
s->machine, s->cpu_model,
s->sockets, s->cores, s->threads, s->maxcpus);
qtest_start(args);
for (i = 1; i < s->maxcpus; i++) {
response = qmp("{ 'execute': 'cpu-add',"
" 'arguments': { 'id': %d } }", i);
g_assert(response);
g_assert(!qdict_haskey(response, "error"));
qobject_unref(response);
}
qtest_end();
g_free(args);
}
static void test_plug_without_cpu_add(gconstpointer data)
{
const PlugTestData *s = data;
char *args;
QDict *response;
args = g_strdup_printf("-machine %s -cpu %s "
"-smp 1,sockets=%u,cores=%u,threads=%u,maxcpus=%u",
s->machine, s->cpu_model,
s->sockets, s->cores, s->threads, s->maxcpus);
qtest_start(args);
response = qmp("{ 'execute': 'cpu-add',"
" 'arguments': { 'id': %d } }",
s->sockets * s->cores * s->threads);
g_assert(response);
g_assert(qdict_haskey(response, "error"));
qobject_unref(response);
qtest_end();
g_free(args);
}
static void test_plug_with_device_add_x86(gconstpointer data)
{
const PlugTestData *td = data;
char *args;
unsigned int s, c, t;
args = g_strdup_printf("-machine %s -cpu %s "
"-smp 1,sockets=%u,cores=%u,threads=%u,maxcpus=%u",
td->machine, td->cpu_model,
td->sockets, td->cores, td->threads, td->maxcpus);
qtest_start(args);
for (s = 1; s < td->sockets; s++) {
for (c = 0; c < td->cores; c++) {
for (t = 0; t < td->threads; t++) {
char *id = g_strdup_printf("id-%i-%i-%i", s, c, t);
qtest_qmp_device_add(td->device_model, id,
"{'socket-id':%u, 'core-id':%u,"
" 'thread-id':%u}",
s, c, t);
g_free(id);
}
}
}
qtest_end();
g_free(args);
}
static void test_plug_with_device_add_coreid(gconstpointer data)
{
const PlugTestData *td = data;
char *args;
unsigned int c;
args = g_strdup_printf("-machine %s -cpu %s "
"-smp 1,sockets=%u,cores=%u,threads=%u,maxcpus=%u",
td->machine, td->cpu_model,
td->sockets, td->cores, td->threads, td->maxcpus);
qtest_start(args);
for (c = 1; c < td->cores; c++) {
char *id = g_strdup_printf("id-%i", c);
qtest_qmp_device_add(td->device_model, id, "{'core-id':%u}", c);
g_free(id);
}
qtest_end();
g_free(args);
}
static void test_data_free(gpointer data)
{
PlugTestData *pc = data;
g_free(pc->machine);
g_free(pc->device_model);
g_free(pc);
}
static void add_pc_test_case(const char *mname)
{
char *path;
PlugTestData *data;
if (!g_str_has_prefix(mname, "pc-")) {
return;
}
data = g_new(PlugTestData, 1);
data->machine = g_strdup(mname);
data->cpu_model = "Haswell"; /* 1.3+ theoretically */
data->device_model = g_strdup_printf("%s-%s-cpu", data->cpu_model,
qtest_get_arch());
data->sockets = 1;
data->cores = 3;
data->threads = 2;
data->maxcpus = data->sockets * data->cores * data->threads;
if (g_str_has_suffix(mname, "-1.4") ||
(strcmp(mname, "pc-1.3") == 0) ||
(strcmp(mname, "pc-1.2") == 0) ||
(strcmp(mname, "pc-1.1") == 0) ||
(strcmp(mname, "pc-1.0") == 0) ||
(strcmp(mname, "pc-0.15") == 0) ||
(strcmp(mname, "pc-0.14") == 0) ||
(strcmp(mname, "pc-0.13") == 0) ||
(strcmp(mname, "pc-0.12") == 0) ||
(strcmp(mname, "pc-0.11") == 0) ||
(strcmp(mname, "pc-0.10") == 0)) {
path = g_strdup_printf("cpu-plug/%s/init/%ux%ux%u&maxcpus=%u",
mname, data->sockets, data->cores,
data->threads, data->maxcpus);
qtest_add_data_func_full(path, data, test_plug_without_cpu_add,
test_data_free);
g_free(path);
} else {
PlugTestData *data2 = g_memdup(data, sizeof(PlugTestData));
data2->machine = g_strdup(data->machine);
data2->device_model = g_strdup(data->device_model);
path = g_strdup_printf("cpu-plug/%s/cpu-add/%ux%ux%u&maxcpus=%u",
mname, data->sockets, data->cores,
data->threads, data->maxcpus);
qtest_add_data_func_full(path, data, test_plug_with_cpu_add,
test_data_free);
g_free(path);
path = g_strdup_printf("cpu-plug/%s/device-add/%ux%ux%u&maxcpus=%u",
mname, data2->sockets, data2->cores,
data2->threads, data2->maxcpus);
qtest_add_data_func_full(path, data2, test_plug_with_device_add_x86,
test_data_free);
g_free(path);
}
}
static void add_pseries_test_case(const char *mname)
{
char *path;
PlugTestData *data;
if (!g_str_has_prefix(mname, "pseries-") ||
(g_str_has_prefix(mname, "pseries-2.") && atoi(&mname[10]) < 7)) {
return;
}
data = g_new(PlugTestData, 1);
data->machine = g_strdup(mname);
data->cpu_model = "power8_v2.0";
data->device_model = g_strdup("power8_v2.0-spapr-cpu-core");
data->sockets = 2;
data->cores = 3;
data->threads = 1;
data->maxcpus = data->sockets * data->cores * data->threads;
path = g_strdup_printf("cpu-plug/%s/device-add/%ux%ux%u&maxcpus=%u",
mname, data->sockets, data->cores,
data->threads, data->maxcpus);
qtest_add_data_func_full(path, data, test_plug_with_device_add_coreid,
test_data_free);
g_free(path);
}
static void add_s390x_test_case(const char *mname)
{
char *path;
PlugTestData *data, *data2;
if (!g_str_has_prefix(mname, "s390-ccw-virtio-")) {
return;
}
data = g_new(PlugTestData, 1);
data->machine = g_strdup(mname);
data->cpu_model = "qemu";
data->device_model = g_strdup("qemu-s390x-cpu");
data->sockets = 1;
data->cores = 3;
data->threads = 1;
data->maxcpus = data->sockets * data->cores * data->threads;
data2 = g_memdup(data, sizeof(PlugTestData));
data2->machine = g_strdup(data->machine);
data2->device_model = g_strdup(data->device_model);
path = g_strdup_printf("cpu-plug/%s/cpu-add/%ux%ux%u&maxcpus=%u",
mname, data->sockets, data->cores,
data->threads, data->maxcpus);
qtest_add_data_func_full(path, data, test_plug_with_cpu_add,
test_data_free);
g_free(path);
path = g_strdup_printf("cpu-plug/%s/device-add/%ux%ux%u&maxcpus=%u",
mname, data2->sockets, data2->cores,
data2->threads, data2->maxcpus);
qtest_add_data_func_full(path, data2, test_plug_with_device_add_coreid,
test_data_free);
g_free(path);
}
int main(int argc, char **argv)
{
const char *arch = qtest_get_arch();
g_test_init(&argc, &argv, NULL);
if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
qtest_cb_for_every_machine(add_pc_test_case, g_test_quick());
} else if (g_str_equal(arch, "ppc64")) {
qtest_cb_for_every_machine(add_pseries_test_case, g_test_quick());
} else if (g_str_equal(arch, "s390x")) {
qtest_cb_for_every_machine(add_s390x_test_case, g_test_quick());
}
return g_test_run();
}
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