From 5e8a39a560ea58308f66d47639c0d5d2e704997f Mon Sep 17 00:00:00 2001 From: Yanan Wang 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 Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20211228092221.21068-5-wangyanan55@huawei.com> Signed-off-by: Philippe Mathieu-Daudé --- 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