| // SPDX-License-Identifier: GPL-2.0 |
| #include <linux/compiler.h> |
| #include <string.h> |
| #include <perf/cpumap.h> |
| #include <perf/evlist.h> |
| #include "metricgroup.h" |
| #include "tests.h" |
| #include "pmu-events/pmu-events.h" |
| #include "evlist.h" |
| #include "rblist.h" |
| #include "debug.h" |
| #include "expr.h" |
| #include "stat.h" |
| #include <perf/cpumap.h> |
| #include <perf/evlist.h> |
| |
| static struct pmu_event pme_test[] = { |
| { |
| .metric_expr = "inst_retired.any / cpu_clk_unhalted.thread", |
| .metric_name = "IPC", |
| .metric_group = "group1", |
| }, |
| { |
| .metric_expr = "idq_uops_not_delivered.core / (4 * (( ( cpu_clk_unhalted.thread / 2 ) * " |
| "( 1 + cpu_clk_unhalted.one_thread_active / cpu_clk_unhalted.ref_xclk ) )))", |
| .metric_name = "Frontend_Bound_SMT", |
| }, |
| { |
| .metric_expr = "l1d\\-loads\\-misses / inst_retired.any", |
| .metric_name = "dcache_miss_cpi", |
| }, |
| { |
| .metric_expr = "l1i\\-loads\\-misses / inst_retired.any", |
| .metric_name = "icache_miss_cycles", |
| }, |
| { |
| .metric_expr = "(dcache_miss_cpi + icache_miss_cycles)", |
| .metric_name = "cache_miss_cycles", |
| .metric_group = "group1", |
| }, |
| { |
| .metric_expr = "l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hit", |
| .metric_name = "DCache_L2_All_Hits", |
| }, |
| { |
| .metric_expr = "max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + " |
| "l2_rqsts.pf_miss + l2_rqsts.rfo_miss", |
| .metric_name = "DCache_L2_All_Miss", |
| }, |
| { |
| .metric_expr = "dcache_l2_all_hits + dcache_l2_all_miss", |
| .metric_name = "DCache_L2_All", |
| }, |
| { |
| .metric_expr = "d_ratio(dcache_l2_all_hits, dcache_l2_all)", |
| .metric_name = "DCache_L2_Hits", |
| }, |
| { |
| .metric_expr = "d_ratio(dcache_l2_all_miss, dcache_l2_all)", |
| .metric_name = "DCache_L2_Misses", |
| }, |
| { |
| .metric_expr = "ipc + m2", |
| .metric_name = "M1", |
| }, |
| { |
| .metric_expr = "ipc + m1", |
| .metric_name = "M2", |
| }, |
| { |
| .metric_expr = "1/m3", |
| .metric_name = "M3", |
| } |
| }; |
| |
| static struct pmu_events_map map = { |
| .cpuid = "test", |
| .version = "1", |
| .type = "core", |
| .table = pme_test, |
| }; |
| |
| struct value { |
| const char *event; |
| u64 val; |
| }; |
| |
| static u64 find_value(const char *name, struct value *values) |
| { |
| struct value *v = values; |
| |
| while (v->event) { |
| if (!strcmp(name, v->event)) |
| return v->val; |
| v++; |
| }; |
| return 0; |
| } |
| |
| static void load_runtime_stat(struct runtime_stat *st, struct evlist *evlist, |
| struct value *vals) |
| { |
| struct evsel *evsel; |
| u64 count; |
| |
| evlist__for_each_entry(evlist, evsel) { |
| count = find_value(evsel->name, vals); |
| perf_stat__update_shadow_stats(evsel, count, 0, st); |
| } |
| } |
| |
| static double compute_single(struct rblist *metric_events, struct evlist *evlist, |
| struct runtime_stat *st, const char *name) |
| { |
| struct metric_expr *mexp; |
| struct metric_event *me; |
| struct evsel *evsel; |
| |
| evlist__for_each_entry(evlist, evsel) { |
| me = metricgroup__lookup(metric_events, evsel, false); |
| if (me != NULL) { |
| list_for_each_entry (mexp, &me->head, nd) { |
| if (strcmp(mexp->metric_name, name)) |
| continue; |
| return test_generic_metric(mexp, 0, st); |
| } |
| } |
| } |
| return 0.; |
| } |
| |
| static int __compute_metric(const char *name, struct value *vals, |
| const char *name1, double *ratio1, |
| const char *name2, double *ratio2) |
| { |
| struct rblist metric_events = { |
| .nr_entries = 0, |
| }; |
| struct perf_cpu_map *cpus; |
| struct runtime_stat st; |
| struct evlist *evlist; |
| int err; |
| |
| /* |
| * We need to prepare evlist for stat mode running on CPU 0 |
| * because that's where all the stats are going to be created. |
| */ |
| evlist = evlist__new(); |
| if (!evlist) |
| return -ENOMEM; |
| |
| cpus = perf_cpu_map__new("0"); |
| if (!cpus) |
| return -ENOMEM; |
| |
| perf_evlist__set_maps(&evlist->core, cpus, NULL); |
| |
| /* Parse the metric into metric_events list. */ |
| err = metricgroup__parse_groups_test(evlist, &map, name, |
| false, false, |
| &metric_events); |
| if (err) |
| return err; |
| |
| if (perf_evlist__alloc_stats(evlist, false)) |
| return -1; |
| |
| /* Load the runtime stats with given numbers for events. */ |
| runtime_stat__init(&st); |
| load_runtime_stat(&st, evlist, vals); |
| |
| /* And execute the metric */ |
| if (name1 && ratio1) |
| *ratio1 = compute_single(&metric_events, evlist, &st, name1); |
| if (name2 && ratio2) |
| *ratio2 = compute_single(&metric_events, evlist, &st, name2); |
| |
| /* ... clenup. */ |
| metricgroup__rblist_exit(&metric_events); |
| runtime_stat__exit(&st); |
| perf_evlist__free_stats(evlist); |
| perf_cpu_map__put(cpus); |
| evlist__delete(evlist); |
| return 0; |
| } |
| |
| static int compute_metric(const char *name, struct value *vals, double *ratio) |
| { |
| return __compute_metric(name, vals, name, ratio, NULL, NULL); |
| } |
| |
| static int compute_metric_group(const char *name, struct value *vals, |
| const char *name1, double *ratio1, |
| const char *name2, double *ratio2) |
| { |
| return __compute_metric(name, vals, name1, ratio1, name2, ratio2); |
| } |
| |
| static int test_ipc(void) |
| { |
| double ratio; |
| struct value vals[] = { |
| { .event = "inst_retired.any", .val = 300 }, |
| { .event = "cpu_clk_unhalted.thread", .val = 200 }, |
| { .event = NULL, }, |
| }; |
| |
| TEST_ASSERT_VAL("failed to compute metric", |
| compute_metric("IPC", vals, &ratio) == 0); |
| |
| TEST_ASSERT_VAL("IPC failed, wrong ratio", |
| ratio == 1.5); |
| return 0; |
| } |
| |
| static int test_frontend(void) |
| { |
| double ratio; |
| struct value vals[] = { |
| { .event = "idq_uops_not_delivered.core", .val = 300 }, |
| { .event = "cpu_clk_unhalted.thread", .val = 200 }, |
| { .event = "cpu_clk_unhalted.one_thread_active", .val = 400 }, |
| { .event = "cpu_clk_unhalted.ref_xclk", .val = 600 }, |
| { .event = NULL, }, |
| }; |
| |
| TEST_ASSERT_VAL("failed to compute metric", |
| compute_metric("Frontend_Bound_SMT", vals, &ratio) == 0); |
| |
| TEST_ASSERT_VAL("Frontend_Bound_SMT failed, wrong ratio", |
| ratio == 0.45); |
| return 0; |
| } |
| |
| static int test_cache_miss_cycles(void) |
| { |
| double ratio; |
| struct value vals[] = { |
| { .event = "l1d-loads-misses", .val = 300 }, |
| { .event = "l1i-loads-misses", .val = 200 }, |
| { .event = "inst_retired.any", .val = 400 }, |
| { .event = NULL, }, |
| }; |
| |
| TEST_ASSERT_VAL("failed to compute metric", |
| compute_metric("cache_miss_cycles", vals, &ratio) == 0); |
| |
| TEST_ASSERT_VAL("cache_miss_cycles failed, wrong ratio", |
| ratio == 1.25); |
| return 0; |
| } |
| |
| |
| /* |
| * DCache_L2_All_Hits = l2_rqsts.demand_data_rd_hit + l2_rqsts.pf_hit + l2_rqsts.rfo_hi |
| * DCache_L2_All_Miss = max(l2_rqsts.all_demand_data_rd - l2_rqsts.demand_data_rd_hit, 0) + |
| * l2_rqsts.pf_miss + l2_rqsts.rfo_miss |
| * DCache_L2_All = dcache_l2_all_hits + dcache_l2_all_miss |
| * DCache_L2_Hits = d_ratio(dcache_l2_all_hits, dcache_l2_all) |
| * DCache_L2_Misses = d_ratio(dcache_l2_all_miss, dcache_l2_all) |
| * |
| * l2_rqsts.demand_data_rd_hit = 100 |
| * l2_rqsts.pf_hit = 200 |
| * l2_rqsts.rfo_hi = 300 |
| * l2_rqsts.all_demand_data_rd = 400 |
| * l2_rqsts.pf_miss = 500 |
| * l2_rqsts.rfo_miss = 600 |
| * |
| * DCache_L2_All_Hits = 600 |
| * DCache_L2_All_Miss = MAX(400 - 100, 0) + 500 + 600 = 1400 |
| * DCache_L2_All = 600 + 1400 = 2000 |
| * DCache_L2_Hits = 600 / 2000 = 0.3 |
| * DCache_L2_Misses = 1400 / 2000 = 0.7 |
| */ |
| static int test_dcache_l2(void) |
| { |
| double ratio; |
| struct value vals[] = { |
| { .event = "l2_rqsts.demand_data_rd_hit", .val = 100 }, |
| { .event = "l2_rqsts.pf_hit", .val = 200 }, |
| { .event = "l2_rqsts.rfo_hit", .val = 300 }, |
| { .event = "l2_rqsts.all_demand_data_rd", .val = 400 }, |
| { .event = "l2_rqsts.pf_miss", .val = 500 }, |
| { .event = "l2_rqsts.rfo_miss", .val = 600 }, |
| { .event = NULL, }, |
| }; |
| |
| TEST_ASSERT_VAL("failed to compute metric", |
| compute_metric("DCache_L2_Hits", vals, &ratio) == 0); |
| |
| TEST_ASSERT_VAL("DCache_L2_Hits failed, wrong ratio", |
| ratio == 0.3); |
| |
| TEST_ASSERT_VAL("failed to compute metric", |
| compute_metric("DCache_L2_Misses", vals, &ratio) == 0); |
| |
| TEST_ASSERT_VAL("DCache_L2_Misses failed, wrong ratio", |
| ratio == 0.7); |
| return 0; |
| } |
| |
| static int test_recursion_fail(void) |
| { |
| double ratio; |
| struct value vals[] = { |
| { .event = "inst_retired.any", .val = 300 }, |
| { .event = "cpu_clk_unhalted.thread", .val = 200 }, |
| { .event = NULL, }, |
| }; |
| |
| TEST_ASSERT_VAL("failed to find recursion", |
| compute_metric("M1", vals, &ratio) == -1); |
| |
| TEST_ASSERT_VAL("failed to find recursion", |
| compute_metric("M3", vals, &ratio) == -1); |
| return 0; |
| } |
| |
| static int test_metric_group(void) |
| { |
| double ratio1, ratio2; |
| struct value vals[] = { |
| { .event = "cpu_clk_unhalted.thread", .val = 200 }, |
| { .event = "l1d-loads-misses", .val = 300 }, |
| { .event = "l1i-loads-misses", .val = 200 }, |
| { .event = "inst_retired.any", .val = 400 }, |
| { .event = NULL, }, |
| }; |
| |
| TEST_ASSERT_VAL("failed to find recursion", |
| compute_metric_group("group1", vals, |
| "IPC", &ratio1, |
| "cache_miss_cycles", &ratio2) == 0); |
| |
| TEST_ASSERT_VAL("group IPC failed, wrong ratio", |
| ratio1 == 2.0); |
| |
| TEST_ASSERT_VAL("group cache_miss_cycles failed, wrong ratio", |
| ratio2 == 1.25); |
| return 0; |
| } |
| |
| int test__parse_metric(struct test *test __maybe_unused, int subtest __maybe_unused) |
| { |
| TEST_ASSERT_VAL("IPC failed", test_ipc() == 0); |
| TEST_ASSERT_VAL("frontend failed", test_frontend() == 0); |
| TEST_ASSERT_VAL("cache_miss_cycles failed", test_cache_miss_cycles() == 0); |
| TEST_ASSERT_VAL("DCache_L2 failed", test_dcache_l2() == 0); |
| TEST_ASSERT_VAL("recursion fail failed", test_recursion_fail() == 0); |
| TEST_ASSERT_VAL("test metric group", test_metric_group() == 0); |
| return 0; |
| } |