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From 5e8a39a560ea58308f66d47639c0d5d2e704997f Mon Sep 17 00:00:00 2001
From: Yanan Wang <wangyanan55@huawei.com>
Date: Tue, 28 Dec 2021 17:22:11 +0800
Subject: [PATCH 12/24] tests/unit/test-smp-parse: Add testcases for CPU
clusters
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Add testcases for parsing of the four-level CPU topology hierarchy,
ie sockets/clusters/cores/threads, which will be supported on ARM
virt machines.
Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211228092221.21068-5-wangyanan55@huawei.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
tests/unit/test-smp-parse.c | 130 ++++++++++++++++++++++++++++++++++--
1 file changed, 123 insertions(+), 7 deletions(-)
diff --git a/tests/unit/test-smp-parse.c b/tests/unit/test-smp-parse.c
index b6df8137fc..331719bbc4 100644
--- a/tests/unit/test-smp-parse.c
+++ b/tests/unit/test-smp-parse.c
@@ -61,6 +61,20 @@
.has_maxcpus = hf, .maxcpus = f, \
}
+/*
+ * Currently a 4-level topology hierarchy is supported on ARM virt machines
+ * -sockets/clusters/cores/threads
+ */
+#define SMP_CONFIG_WITH_CLUSTERS(ha, a, hb, b, hc, c, hd, d, he, e, hf, f) \
+ { \
+ .has_cpus = ha, .cpus = a, \
+ .has_sockets = hb, .sockets = b, \
+ .has_clusters = hc, .clusters = c, \
+ .has_cores = hd, .cores = d, \
+ .has_threads = he, .threads = e, \
+ .has_maxcpus = hf, .maxcpus = f, \
+ }
+
/**
* @config - the given SMP configuration
* @expect_prefer_sockets - the expected parsing result for the
@@ -290,6 +304,10 @@ static const struct SMPTestData data_generic_invalid[] = {
/* config: -smp 2,dies=2 */
.config = SMP_CONFIG_WITH_DIES(T, 2, F, 0, T, 2, F, 0, F, 0, F, 0),
.expect_error = "dies not supported by this machine's CPU topology",
+ }, {
+ /* config: -smp 2,clusters=2 */
+ .config = SMP_CONFIG_WITH_CLUSTERS(T, 2, F, 0, T, 2, F, 0, F, 0, F, 0),
+ .expect_error = "clusters not supported by this machine's CPU topology",
}, {
/* config: -smp 8,sockets=2,cores=4,threads=2,maxcpus=8 */
.config = SMP_CONFIG_GENERIC(T, 8, T, 2, T, 4, T, 2, T, 8),
@@ -337,20 +355,40 @@ static const struct SMPTestData data_with_dies_invalid[] = {
},
};
+static const struct SMPTestData data_with_clusters_invalid[] = {
+ {
+ /* config: -smp 16,sockets=2,clusters=2,cores=4,threads=2,maxcpus=16 */
+ .config = SMP_CONFIG_WITH_CLUSTERS(T, 16, T, 2, T, 2, T, 4, T, 2, T, 16),
+ .expect_error = "Invalid CPU topology: "
+ "product of the hierarchy must match maxcpus: "
+ "sockets (2) * clusters (2) * cores (4) * threads (2) "
+ "!= maxcpus (16)",
+ }, {
+ /* config: -smp 34,sockets=2,clusters=2,cores=4,threads=2,maxcpus=32 */
+ .config = SMP_CONFIG_WITH_CLUSTERS(T, 34, T, 2, T, 2, T, 4, T, 2, T, 32),
+ .expect_error = "Invalid CPU topology: "
+ "maxcpus must be equal to or greater than smp: "
+ "sockets (2) * clusters (2) * cores (4) * threads (2) "
+ "== maxcpus (32) < smp_cpus (34)",
+ },
+};
+
static char *smp_config_to_string(const SMPConfiguration *config)
{
return g_strdup_printf(
"(SMPConfiguration) {\n"
- " .has_cpus = %5s, cpus = %" PRId64 ",\n"
- " .has_sockets = %5s, sockets = %" PRId64 ",\n"
- " .has_dies = %5s, dies = %" PRId64 ",\n"
- " .has_cores = %5s, cores = %" PRId64 ",\n"
- " .has_threads = %5s, threads = %" PRId64 ",\n"
- " .has_maxcpus = %5s, maxcpus = %" PRId64 ",\n"
+ " .has_cpus = %5s, cpus = %" PRId64 ",\n"
+ " .has_sockets = %5s, sockets = %" PRId64 ",\n"
+ " .has_dies = %5s, dies = %" PRId64 ",\n"
+ " .has_clusters = %5s, clusters = %" PRId64 ",\n"
+ " .has_cores = %5s, cores = %" PRId64 ",\n"
+ " .has_threads = %5s, threads = %" PRId64 ",\n"
+ " .has_maxcpus = %5s, maxcpus = %" PRId64 ",\n"
"}",
config->has_cpus ? "true" : "false", config->cpus,
config->has_sockets ? "true" : "false", config->sockets,
config->has_dies ? "true" : "false", config->dies,
+ config->has_clusters ? "true" : "false", config->clusters,
config->has_cores ? "true" : "false", config->cores,
config->has_threads ? "true" : "false", config->threads,
config->has_maxcpus ? "true" : "false", config->maxcpus);
@@ -363,11 +401,12 @@ static char *cpu_topology_to_string(const CpuTopology *topo)
" .cpus = %u,\n"
" .sockets = %u,\n"
" .dies = %u,\n"
+ " .clusters = %u,\n"
" .cores = %u,\n"
" .threads = %u,\n"
" .max_cpus = %u,\n"
"}",
- topo->cpus, topo->sockets, topo->dies,
+ topo->cpus, topo->sockets, topo->dies, topo->clusters,
topo->cores, topo->threads, topo->max_cpus);
}
@@ -391,6 +430,7 @@ static void check_parse(MachineState *ms, const SMPConfiguration *config,
(ms->smp.cpus == expect_topo->cpus) &&
(ms->smp.sockets == expect_topo->sockets) &&
(ms->smp.dies == expect_topo->dies) &&
+ (ms->smp.clusters == expect_topo->clusters) &&
(ms->smp.cores == expect_topo->cores) &&
(ms->smp.threads == expect_topo->threads) &&
(ms->smp.max_cpus == expect_topo->max_cpus)) {
@@ -472,6 +512,11 @@ static void unsupported_params_init(const MachineClass *mc, SMPTestData *data)
data->expect_prefer_sockets.dies = 1;
data->expect_prefer_cores.dies = 1;
}
+
+ if (!mc->smp_props.clusters_supported) {
+ data->expect_prefer_sockets.clusters = 1;
+ data->expect_prefer_cores.clusters = 1;
+ }
}
static void machine_base_class_init(ObjectClass *oc, void *data)
@@ -491,6 +536,7 @@ static void machine_generic_valid_class_init(ObjectClass *oc, void *data)
mc->max_cpus = MAX_CPUS;
mc->smp_props.dies_supported = false;
+ mc->smp_props.clusters_supported = false;
}
static void machine_generic_invalid_class_init(ObjectClass *oc, void *data)
@@ -502,6 +548,7 @@ static void machine_generic_invalid_class_init(ObjectClass *oc, void *data)
mc->max_cpus = 511;
mc->smp_props.dies_supported = false;
+ mc->smp_props.clusters_supported = false;
}
static void machine_with_dies_class_init(ObjectClass *oc, void *data)
@@ -512,6 +559,18 @@ static void machine_with_dies_class_init(ObjectClass *oc, void *data)
mc->max_cpus = MAX_CPUS;
mc->smp_props.dies_supported = true;
+ mc->smp_props.clusters_supported = false;
+}
+
+static void machine_with_clusters_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+
+ mc->min_cpus = MIN_CPUS;
+ mc->max_cpus = MAX_CPUS;
+
+ mc->smp_props.clusters_supported = true;
+ mc->smp_props.dies_supported = false;
}
static void test_generic_valid(const void *opaque)
@@ -607,6 +666,56 @@ static void test_with_dies(const void *opaque)
object_unref(obj);
}
+static void test_with_clusters(const void *opaque)
+{
+ const char *machine_type = opaque;
+ Object *obj = object_new(machine_type);
+ MachineState *ms = MACHINE(obj);
+ MachineClass *mc = MACHINE_GET_CLASS(obj);
+ SMPTestData data = {};
+ unsigned int num_clusters = 2;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(data_generic_valid); i++) {
+ data = data_generic_valid[i];
+ unsupported_params_init(mc, &data);
+
+ /* when clusters parameter is omitted, it will be set as 1 */
+ data.expect_prefer_sockets.clusters = 1;
+ data.expect_prefer_cores.clusters = 1;
+
+ smp_parse_test(ms, &data, true);
+
+ /* when clusters parameter is specified */
+ data.config.has_clusters = true;
+ data.config.clusters = num_clusters;
+ if (data.config.has_cpus) {
+ data.config.cpus *= num_clusters;
+ }
+ if (data.config.has_maxcpus) {
+ data.config.maxcpus *= num_clusters;
+ }
+
+ data.expect_prefer_sockets.clusters = num_clusters;
+ data.expect_prefer_sockets.cpus *= num_clusters;
+ data.expect_prefer_sockets.max_cpus *= num_clusters;
+ data.expect_prefer_cores.clusters = num_clusters;
+ data.expect_prefer_cores.cpus *= num_clusters;
+ data.expect_prefer_cores.max_cpus *= num_clusters;
+
+ smp_parse_test(ms, &data, true);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(data_with_clusters_invalid); i++) {
+ data = data_with_clusters_invalid[i];
+ unsupported_params_init(mc, &data);
+
+ smp_parse_test(ms, &data, false);
+ }
+
+ object_unref(obj);
+}
+
/* Type info of the tested machine */
static const TypeInfo smp_machine_types[] = {
{
@@ -628,6 +737,10 @@ static const TypeInfo smp_machine_types[] = {
.name = MACHINE_TYPE_NAME("smp-with-dies"),
.parent = TYPE_MACHINE,
.class_init = machine_with_dies_class_init,
+ }, {
+ .name = MACHINE_TYPE_NAME("smp-with-clusters"),
+ .parent = TYPE_MACHINE,
+ .class_init = machine_with_clusters_class_init,
}
};
@@ -648,6 +761,9 @@ int main(int argc, char *argv[])
g_test_add_data_func("/test-smp-parse/with_dies",
MACHINE_TYPE_NAME("smp-with-dies"),
test_with_dies);
+ g_test_add_data_func("/test-smp-parse/with_clusters",
+ MACHINE_TYPE_NAME("smp-with-clusters"),
+ test_with_clusters);
g_test_run();
--
2.27.0
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