diff options
Diffstat (limited to 'tools/perf/tests/pmu-events.c')
| -rw-r--r-- | tools/perf/tests/pmu-events.c | 1063 |
1 files changed, 1063 insertions, 0 deletions
diff --git a/tools/perf/tests/pmu-events.c b/tools/perf/tests/pmu-events.c new file mode 100644 index 000000000000..097e05c796ab --- /dev/null +++ b/tools/perf/tests/pmu-events.c @@ -0,0 +1,1063 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "math.h" +#include "parse-events.h" +#include "pmu.h" +#include "tests.h" +#include <errno.h> +#include <stdio.h> +#include <linux/kernel.h> +#include <linux/zalloc.h> +#include "debug.h" +#include "../pmu-events/pmu-events.h" +#include <perf/evlist.h> +#include "util/evlist.h" +#include "util/expr.h" +#include "util/parse-events.h" +#include "metricgroup.h" +#include "stat.h" + +struct perf_pmu_test_event { + /* used for matching against events from generated pmu-events.c */ + struct pmu_event event; + + /* used for matching against event aliases */ + /* extra events for aliases */ + const char *alias_str; + + /* + * Note: For when PublicDescription does not exist in the JSON, we + * will have no long_desc in pmu_event.long_desc, but long_desc may + * be set in the alias. + */ + const char *alias_long_desc; + + /* PMU which we should match against */ + const char *matching_pmu; +}; + +struct perf_pmu_test_pmu { + struct perf_pmu pmu; + struct perf_pmu_test_event const *aliases[10]; +}; + +static const struct perf_pmu_test_event bp_l1_btb_correct = { + .event = { + .name = "bp_l1_btb_correct", + .event = "event=0x8a", + .desc = "L1 BTB Correction", + .topic = "branch", + }, + .alias_str = "event=0x8a", + .alias_long_desc = "L1 BTB Correction", +}; + +static const struct perf_pmu_test_event bp_l2_btb_correct = { + .event = { + .name = "bp_l2_btb_correct", + .event = "event=0x8b", + .desc = "L2 BTB Correction", + .topic = "branch", + }, + .alias_str = "event=0x8b", + .alias_long_desc = "L2 BTB Correction", +}; + +static const struct perf_pmu_test_event segment_reg_loads_any = { + .event = { + .name = "segment_reg_loads.any", + .event = "event=0x6,period=200000,umask=0x80", + .desc = "Number of segment register loads", + .topic = "other", + }, + .alias_str = "event=0x6,period=0x30d40,umask=0x80", + .alias_long_desc = "Number of segment register loads", +}; + +static const struct perf_pmu_test_event dispatch_blocked_any = { + .event = { + .name = "dispatch_blocked.any", + .event = "event=0x9,period=200000,umask=0x20", + .desc = "Memory cluster signals to block micro-op dispatch for any reason", + .topic = "other", + }, + .alias_str = "event=0x9,period=0x30d40,umask=0x20", + .alias_long_desc = "Memory cluster signals to block micro-op dispatch for any reason", +}; + +static const struct perf_pmu_test_event eist_trans = { + .event = { + .name = "eist_trans", + .event = "event=0x3a,period=200000,umask=0x0", + .desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions", + .topic = "other", + }, + .alias_str = "event=0x3a,period=0x30d40,umask=0", + .alias_long_desc = "Number of Enhanced Intel SpeedStep(R) Technology (EIST) transitions", +}; + +static const struct perf_pmu_test_event l3_cache_rd = { + .event = { + .name = "l3_cache_rd", + .event = "event=0x40", + .desc = "L3 cache access, read", + .long_desc = "Attributable Level 3 cache access, read", + .topic = "cache", + }, + .alias_str = "event=0x40", + .alias_long_desc = "Attributable Level 3 cache access, read", +}; + +static const struct perf_pmu_test_event *core_events[] = { + &bp_l1_btb_correct, + &bp_l2_btb_correct, + &segment_reg_loads_any, + &dispatch_blocked_any, + &eist_trans, + &l3_cache_rd, + NULL +}; + +static const struct perf_pmu_test_event uncore_hisi_ddrc_flux_wcmd = { + .event = { + .name = "uncore_hisi_ddrc.flux_wcmd", + .event = "event=0x2", + .desc = "DDRC write commands. Unit: hisi_sccl,ddrc ", + .topic = "uncore", + .long_desc = "DDRC write commands", + .pmu = "hisi_sccl,ddrc", + }, + .alias_str = "event=0x2", + .alias_long_desc = "DDRC write commands", + .matching_pmu = "hisi_sccl1_ddrc2", +}; + +static const struct perf_pmu_test_event unc_cbo_xsnp_response_miss_eviction = { + .event = { + .name = "unc_cbo_xsnp_response.miss_eviction", + .event = "event=0x22,umask=0x81", + .desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core. Unit: uncore_cbox ", + .topic = "uncore", + .long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core", + .pmu = "uncore_cbox", + }, + .alias_str = "event=0x22,umask=0x81", + .alias_long_desc = "A cross-core snoop resulted from L3 Eviction which misses in some processor core", + .matching_pmu = "uncore_cbox_0", +}; + +static const struct perf_pmu_test_event uncore_hyphen = { + .event = { + .name = "event-hyphen", + .event = "event=0xe0,umask=0x00", + .desc = "UNC_CBO_HYPHEN. Unit: uncore_cbox ", + .topic = "uncore", + .long_desc = "UNC_CBO_HYPHEN", + .pmu = "uncore_cbox", + }, + .alias_str = "event=0xe0,umask=0", + .alias_long_desc = "UNC_CBO_HYPHEN", + .matching_pmu = "uncore_cbox_0", +}; + +static const struct perf_pmu_test_event uncore_two_hyph = { + .event = { + .name = "event-two-hyph", + .event = "event=0xc0,umask=0x00", + .desc = "UNC_CBO_TWO_HYPH. Unit: uncore_cbox ", + .topic = "uncore", + .long_desc = "UNC_CBO_TWO_HYPH", + .pmu = "uncore_cbox", + }, + .alias_str = "event=0xc0,umask=0", + .alias_long_desc = "UNC_CBO_TWO_HYPH", + .matching_pmu = "uncore_cbox_0", +}; + +static const struct perf_pmu_test_event uncore_hisi_l3c_rd_hit_cpipe = { + .event = { + .name = "uncore_hisi_l3c.rd_hit_cpipe", + .event = "event=0x7", + .desc = "Total read hits. Unit: hisi_sccl,l3c ", + .topic = "uncore", + .long_desc = "Total read hits", + .pmu = "hisi_sccl,l3c", + }, + .alias_str = "event=0x7", + .alias_long_desc = "Total read hits", + .matching_pmu = "hisi_sccl3_l3c7", +}; + +static const struct perf_pmu_test_event uncore_imc_free_running_cache_miss = { + .event = { + .name = "uncore_imc_free_running.cache_miss", + .event = "event=0x12", + .desc = "Total cache misses. Unit: uncore_imc_free_running ", + .topic = "uncore", + .long_desc = "Total cache misses", + .pmu = "uncore_imc_free_running", + }, + .alias_str = "event=0x12", + .alias_long_desc = "Total cache misses", + .matching_pmu = "uncore_imc_free_running_0", +}; + +static const struct perf_pmu_test_event uncore_imc_cache_hits = { + .event = { + .name = "uncore_imc.cache_hits", + .event = "event=0x34", + .desc = "Total cache hits. Unit: uncore_imc ", + .topic = "uncore", + .long_desc = "Total cache hits", + .pmu = "uncore_imc", + }, + .alias_str = "event=0x34", + .alias_long_desc = "Total cache hits", + .matching_pmu = "uncore_imc_0", +}; + +static const struct perf_pmu_test_event *uncore_events[] = { + &uncore_hisi_ddrc_flux_wcmd, + &unc_cbo_xsnp_response_miss_eviction, + &uncore_hyphen, + &uncore_two_hyph, + &uncore_hisi_l3c_rd_hit_cpipe, + &uncore_imc_free_running_cache_miss, + &uncore_imc_cache_hits, + NULL +}; + +static const struct perf_pmu_test_event sys_ddr_pmu_write_cycles = { + .event = { + .name = "sys_ddr_pmu.write_cycles", + .event = "event=0x2b", + .desc = "ddr write-cycles event. Unit: uncore_sys_ddr_pmu ", + .topic = "uncore", + .pmu = "uncore_sys_ddr_pmu", + .compat = "v8", + }, + .alias_str = "event=0x2b", + .alias_long_desc = "ddr write-cycles event. Unit: uncore_sys_ddr_pmu ", + .matching_pmu = "uncore_sys_ddr_pmu", +}; + +static const struct perf_pmu_test_event sys_ccn_pmu_read_cycles = { + .event = { + .name = "sys_ccn_pmu.read_cycles", + .event = "config=0x2c", + .desc = "ccn read-cycles event. Unit: uncore_sys_ccn_pmu ", + .topic = "uncore", + .pmu = "uncore_sys_ccn_pmu", + .compat = "0x01", + }, + .alias_str = "config=0x2c", + .alias_long_desc = "ccn read-cycles event. Unit: uncore_sys_ccn_pmu ", + .matching_pmu = "uncore_sys_ccn_pmu", +}; + +static const struct perf_pmu_test_event *sys_events[] = { + &sys_ddr_pmu_write_cycles, + &sys_ccn_pmu_read_cycles, + NULL +}; + +static bool is_same(const char *reference, const char *test) +{ + if (!reference && !test) + return true; + + if (reference && !test) + return false; + + if (!reference && test) + return false; + + return !strcmp(reference, test); +} + +static int compare_pmu_events(const struct pmu_event *e1, const struct pmu_event *e2) +{ + if (!is_same(e1->name, e2->name)) { + pr_debug2("testing event e1 %s: mismatched name string, %s vs %s\n", + e1->name, e1->name, e2->name); + return -1; + } + + if (!is_same(e1->compat, e2->compat)) { + pr_debug2("testing event e1 %s: mismatched compat string, %s vs %s\n", + e1->name, e1->compat, e2->compat); + return -1; + } + + if (!is_same(e1->event, e2->event)) { + pr_debug2("testing event e1 %s: mismatched event, %s vs %s\n", + e1->name, e1->event, e2->event); + return -1; + } + + if (!is_same(e1->desc, e2->desc)) { + pr_debug2("testing event e1 %s: mismatched desc, %s vs %s\n", + e1->name, e1->desc, e2->desc); + return -1; + } + + if (!is_same(e1->topic, e2->topic)) { + pr_debug2("testing event e1 %s: mismatched topic, %s vs %s\n", + e1->name, e1->topic, e2->topic); + return -1; + } + + if (!is_same(e1->long_desc, e2->long_desc)) { + pr_debug2("testing event e1 %s: mismatched long_desc, %s vs %s\n", + e1->name, e1->long_desc, e2->long_desc); + return -1; + } + + if (!is_same(e1->pmu, e2->pmu)) { + pr_debug2("testing event e1 %s: mismatched pmu string, %s vs %s\n", + e1->name, e1->pmu, e2->pmu); + return -1; + } + + if (!is_same(e1->unit, e2->unit)) { + pr_debug2("testing event e1 %s: mismatched unit, %s vs %s\n", + e1->name, e1->unit, e2->unit); + return -1; + } + + if (!is_same(e1->perpkg, e2->perpkg)) { + pr_debug2("testing event e1 %s: mismatched perpkg, %s vs %s\n", + e1->name, e1->perpkg, e2->perpkg); + return -1; + } + + if (!is_same(e1->aggr_mode, e2->aggr_mode)) { + pr_debug2("testing event e1 %s: mismatched aggr_mode, %s vs %s\n", + e1->name, e1->aggr_mode, e2->aggr_mode); + return -1; + } + + if (!is_same(e1->metric_expr, e2->metric_expr)) { + pr_debug2("testing event e1 %s: mismatched metric_expr, %s vs %s\n", + e1->name, e1->metric_expr, e2->metric_expr); + return -1; + } + + if (!is_same(e1->metric_name, e2->metric_name)) { + pr_debug2("testing event e1 %s: mismatched metric_name, %s vs %s\n", + e1->name, e1->metric_name, e2->metric_name); + return -1; + } + + if (!is_same(e1->metric_group, e2->metric_group)) { + pr_debug2("testing event e1 %s: mismatched metric_group, %s vs %s\n", + e1->name, e1->metric_group, e2->metric_group); + return -1; + } + + if (!is_same(e1->deprecated, e2->deprecated)) { + pr_debug2("testing event e1 %s: mismatched deprecated, %s vs %s\n", + e1->name, e1->deprecated, e2->deprecated); + return -1; + } + + if (!is_same(e1->metric_constraint, e2->metric_constraint)) { + pr_debug2("testing event e1 %s: mismatched metric_constant, %s vs %s\n", + e1->name, e1->metric_constraint, e2->metric_constraint); + return -1; + } + + return 0; +} + +static int compare_alias_to_test_event(struct perf_pmu_alias *alias, + struct perf_pmu_test_event const *test_event, + char const *pmu_name) +{ + struct pmu_event const *event = &test_event->event; + + /* An alias was found, ensure everything is in order */ + if (!is_same(alias->name, event->name)) { + pr_debug("testing aliases PMU %s: mismatched name, %s vs %s\n", + pmu_name, alias->name, event->name); + return -1; + } + + if (!is_same(alias->desc, event->desc)) { + pr_debug("testing aliases PMU %s: mismatched desc, %s vs %s\n", + pmu_name, alias->desc, event->desc); + return -1; + } + + if (!is_same(alias->long_desc, test_event->alias_long_desc)) { + pr_debug("testing aliases PMU %s: mismatched long_desc, %s vs %s\n", + pmu_name, alias->long_desc, + test_event->alias_long_desc); + return -1; + } + + if (!is_same(alias->topic, event->topic)) { + pr_debug("testing aliases PMU %s: mismatched topic, %s vs %s\n", + pmu_name, alias->topic, event->topic); + return -1; + } + + if (!is_same(alias->str, test_event->alias_str)) { + pr_debug("testing aliases PMU %s: mismatched str, %s vs %s\n", + pmu_name, alias->str, test_event->alias_str); + return -1; + } + + if (!is_same(alias->long_desc, test_event->alias_long_desc)) { + pr_debug("testing aliases PMU %s: mismatched long desc, %s vs %s\n", + pmu_name, alias->str, test_event->alias_long_desc); + return -1; + } + + + if (!is_same(alias->pmu_name, test_event->event.pmu)) { + pr_debug("testing aliases PMU %s: mismatched pmu_name, %s vs %s\n", + pmu_name, alias->pmu_name, test_event->event.pmu); + return -1; + } + + return 0; +} + +static int test__pmu_event_table_core_callback(const struct pmu_event *pe, + const struct pmu_events_table *table __maybe_unused, + void *data) +{ + int *map_events = data; + struct perf_pmu_test_event const **test_event_table; + bool found = false; + + if (!pe->name) + return 0; + + if (pe->pmu) + test_event_table = &uncore_events[0]; + else + test_event_table = &core_events[0]; + + for (; *test_event_table; test_event_table++) { + struct perf_pmu_test_event const *test_event = *test_event_table; + struct pmu_event const *event = &test_event->event; + + if (strcmp(pe->name, event->name)) + continue; + found = true; + (*map_events)++; + + if (compare_pmu_events(pe, event)) + return -1; + + pr_debug("testing event table %s: pass\n", pe->name); + } + if (!found) { + pr_err("testing event table: could not find event %s\n", pe->name); + return -1; + } + return 0; +} + +static int test__pmu_event_table_sys_callback(const struct pmu_event *pe, + const struct pmu_events_table *table __maybe_unused, + void *data) +{ + int *map_events = data; + struct perf_pmu_test_event const **test_event_table; + bool found = false; + + test_event_table = &sys_events[0]; + + for (; *test_event_table; test_event_table++) { + struct perf_pmu_test_event const *test_event = *test_event_table; + struct pmu_event const *event = &test_event->event; + + if (strcmp(pe->name, event->name)) + continue; + found = true; + (*map_events)++; + + if (compare_pmu_events(pe, event)) + return TEST_FAIL; + + pr_debug("testing sys event table %s: pass\n", pe->name); + } + if (!found) { + pr_debug("testing sys event table: could not find event %s\n", pe->name); + return TEST_FAIL; + } + return TEST_OK; +} + +/* Verify generated events from pmu-events.c are as expected */ +static int test__pmu_event_table(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + const struct pmu_events_table *sys_event_table = find_sys_events_table("pme_test_soc_sys"); + const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu"); + int map_events = 0, expected_events, err; + + /* ignore 3x sentinels */ + expected_events = ARRAY_SIZE(core_events) + + ARRAY_SIZE(uncore_events) + + ARRAY_SIZE(sys_events) - 3; + + if (!table || !sys_event_table) + return -1; + + err = pmu_events_table_for_each_event(table, test__pmu_event_table_core_callback, + &map_events); + if (err) + return err; + + err = pmu_events_table_for_each_event(sys_event_table, test__pmu_event_table_sys_callback, + &map_events); + if (err) + return err; + + if (map_events != expected_events) { + pr_err("testing event table: found %d, but expected %d\n", + map_events, expected_events); + return TEST_FAIL; + } + + return 0; +} + +static struct perf_pmu_alias *find_alias(const char *test_event, struct list_head *aliases) +{ + struct perf_pmu_alias *alias; + + list_for_each_entry(alias, aliases, list) + if (!strcmp(test_event, alias->name)) + return alias; + + return NULL; +} + +/* Verify aliases are as expected */ +static int __test_core_pmu_event_aliases(char *pmu_name, int *count) +{ + struct perf_pmu_test_event const **test_event_table; + struct perf_pmu *pmu; + LIST_HEAD(aliases); + int res = 0; + const struct pmu_events_table *table = find_core_events_table("testarch", "testcpu"); + struct perf_pmu_alias *a, *tmp; + + if (!table) + return -1; + + test_event_table = &core_events[0]; + + pmu = zalloc(sizeof(*pmu)); + if (!pmu) + return -1; + + pmu->name = pmu_name; + + pmu_add_cpu_aliases_table(&aliases, pmu, table); + + for (; *test_event_table; test_event_table++) { + struct perf_pmu_test_event const *test_event = *test_event_table; + struct pmu_event const *event = &test_event->event; + struct perf_pmu_alias *alias = find_alias(event->name, &aliases); + + if (!alias) { + pr_debug("testing aliases core PMU %s: no alias, alias_table->name=%s\n", + pmu_name, event->name); + res = -1; + break; + } + + if (compare_alias_to_test_event(alias, test_event, pmu_name)) { + res = -1; + break; + } + + (*count)++; + pr_debug2("testing aliases core PMU %s: matched event %s\n", + pmu_name, alias->name); + } + + list_for_each_entry_safe(a, tmp, &aliases, list) { + list_del(&a->list); + perf_pmu_free_alias(a); + } + free(pmu); + return res; +} + +static int __test_uncore_pmu_event_aliases(struct perf_pmu_test_pmu *test_pmu) +{ + int alias_count = 0, to_match_count = 0, matched_count = 0; + struct perf_pmu_test_event const **table; + struct perf_pmu *pmu = &test_pmu->pmu; + const char *pmu_name = pmu->name; + struct perf_pmu_alias *a, *tmp, *alias; + const struct pmu_events_table *events_table; + LIST_HEAD(aliases); + int res = 0; + + events_table = find_core_events_table("testarch", "testcpu"); + if (!events_table) + return -1; + pmu_add_cpu_aliases_table(&aliases, pmu, events_table); + pmu_add_sys_aliases(&aliases, pmu); + + /* Count how many aliases we generated */ + list_for_each_entry(alias, &aliases, list) + alias_count++; + + /* Count how many aliases we expect from the known table */ + for (table = &test_pmu->aliases[0]; *table; table++) + to_match_count++; + + if (alias_count != to_match_count) { + pr_debug("testing aliases uncore PMU %s: mismatch expected aliases (%d) vs found (%d)\n", + pmu_name, to_match_count, alias_count); + res = -1; + goto out; + } + + list_for_each_entry(alias, &aliases, list) { + bool matched = false; + + for (table = &test_pmu->aliases[0]; *table; table++) { + struct perf_pmu_test_event const *test_event = *table; + struct pmu_event const *event = &test_event->event; + + if (!strcmp(event->name, alias->name)) { + if (compare_alias_to_test_event(alias, + test_event, + pmu_name)) { + continue; + } + matched = true; + matched_count++; + } + } + + if (matched == false) { + pr_debug("testing aliases uncore PMU %s: could not match alias %s\n", + pmu_name, alias->name); + res = -1; + goto out; + } + } + + if (alias_count != matched_count) { + pr_debug("testing aliases uncore PMU %s: mismatch found aliases (%d) vs matched (%d)\n", + pmu_name, matched_count, alias_count); + res = -1; + } + +out: + list_for_each_entry_safe(a, tmp, &aliases, list) { + list_del(&a->list); + perf_pmu_free_alias(a); + } + return res; +} + +static struct perf_pmu_test_pmu test_pmus[] = { + { + .pmu = { + .name = (char *)"hisi_sccl1_ddrc2", + .is_uncore = 1, + }, + .aliases = { + &uncore_hisi_ddrc_flux_wcmd, + }, + }, + { + .pmu = { + .name = (char *)"uncore_cbox_0", + .is_uncore = 1, + }, + .aliases = { + &unc_cbo_xsnp_response_miss_eviction, + &uncore_hyphen, + &uncore_two_hyph, + }, + }, + { + .pmu = { + .name = (char *)"hisi_sccl3_l3c7", + .is_uncore = 1, + }, + .aliases = { + &uncore_hisi_l3c_rd_hit_cpipe, + }, + }, + { + .pmu = { + .name = (char *)"uncore_imc_free_running_0", + .is_uncore = 1, + }, + .aliases = { + &uncore_imc_free_running_cache_miss, + }, + }, + { + .pmu = { + .name = (char *)"uncore_imc_0", + .is_uncore = 1, + }, + .aliases = { + &uncore_imc_cache_hits, + }, + }, + { + .pmu = { + .name = (char *)"uncore_sys_ddr_pmu0", + .is_uncore = 1, + .id = (char *)"v8", + }, + .aliases = { + &sys_ddr_pmu_write_cycles, + }, + }, + { + .pmu = { + .name = (char *)"uncore_sys_ccn_pmu4", + .is_uncore = 1, + .id = (char *)"0x01", + }, + .aliases = { + &sys_ccn_pmu_read_cycles, + }, + }, +}; + +/* Test that aliases generated are as expected */ +static int test__aliases(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + struct perf_pmu *pmu = NULL; + unsigned long i; + + while ((pmu = perf_pmu__scan(pmu)) != NULL) { + int count = 0; + + if (!is_pmu_core(pmu->name)) + continue; + + if (list_empty(&pmu->format)) { + pr_debug2("skipping testing core PMU %s\n", pmu->name); + continue; + } + + if (__test_core_pmu_event_aliases(pmu->name, &count)) { + pr_debug("testing core PMU %s aliases: failed\n", pmu->name); + return -1; + } + + if (count == 0) { + pr_debug("testing core PMU %s aliases: no events to match\n", + pmu->name); + return -1; + } + + pr_debug("testing core PMU %s aliases: pass\n", pmu->name); + } + + for (i = 0; i < ARRAY_SIZE(test_pmus); i++) { + int res = __test_uncore_pmu_event_aliases(&test_pmus[i]); + + if (res) + return res; + } + + return 0; +} + +static bool is_number(const char *str) +{ + char *end_ptr; + double v; + + errno = 0; + v = strtod(str, &end_ptr); + (void)v; // We're not interested in this value, only if it is valid + return errno == 0 && end_ptr != str; +} + +static int check_parse_id(const char *id, struct parse_events_error *error, + struct perf_pmu *fake_pmu) +{ + struct evlist *evlist; + int ret; + char *dup, *cur; + + /* Numbers are always valid. */ + if (is_number(id)) + return 0; + + evlist = evlist__new(); + if (!evlist) + return -ENOMEM; + + dup = strdup(id); + if (!dup) + return -ENOMEM; + + for (cur = strchr(dup, '@') ; cur; cur = strchr(++cur, '@')) + *cur = '/'; + + if (fake_pmu) { + /* + * Every call to __parse_events will try to initialize the PMU + * state from sysfs and then clean it up at the end. Reset the + * PMU events to the test state so that we don't pick up + * erroneous prefixes and suffixes. + */ + perf_pmu__test_parse_init(); + } + ret = __parse_events(evlist, dup, error, fake_pmu); + free(dup); + + evlist__delete(evlist); + return ret; +} + +static int check_parse_fake(const char *id) +{ + struct parse_events_error error; + int ret; + + parse_events_error__init(&error); + ret = check_parse_id(id, &error, &perf_pmu__fake); + parse_events_error__exit(&error); + return ret; +} + +struct metric { + struct list_head list; + struct metric_ref metric_ref; +}; + +static int test__parsing_callback(const struct pmu_event *pe, const struct pmu_events_table *table, + void *data) +{ + int *failures = data; + int k; + struct evlist *evlist; + struct perf_cpu_map *cpus; + struct runtime_stat st; + struct evsel *evsel; + struct rblist metric_events = { + .nr_entries = 0, + }; + int err = 0; + + if (!pe->metric_expr) + return 0; + + pr_debug("Found metric '%s'\n", pe->metric_name); + (*failures)++; + + /* + * 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) { + evlist__delete(evlist); + return -ENOMEM; + } + + perf_evlist__set_maps(&evlist->core, cpus, NULL); + runtime_stat__init(&st); + + err = metricgroup__parse_groups_test(evlist, table, pe->metric_name, + false, false, + &metric_events); + if (err) { + if (!strcmp(pe->metric_name, "M1") || !strcmp(pe->metric_name, "M2") || + !strcmp(pe->metric_name, "M3")) { + (*failures)--; + pr_debug("Expected broken metric %s skipping\n", pe->metric_name); + err = 0; + } + goto out_err; + } + + err = evlist__alloc_stats(evlist, false); + if (err) + goto out_err; + /* + * Add all ids with a made up value. The value may trigger divide by + * zero when subtracted and so try to make them unique. + */ + k = 1; + perf_stat__reset_shadow_stats(); + evlist__for_each_entry(evlist, evsel) { + perf_stat__update_shadow_stats(evsel, k, 0, &st); + if (!strcmp(evsel->name, "duration_time")) + update_stats(&walltime_nsecs_stats, k); + k++; + } + evlist__for_each_entry(evlist, evsel) { + struct metric_event *me = metricgroup__lookup(&metric_events, evsel, false); + + if (me != NULL) { + struct metric_expr *mexp; + + list_for_each_entry (mexp, &me->head, nd) { + if (strcmp(mexp->metric_name, pe->metric_name)) + continue; + pr_debug("Result %f\n", test_generic_metric(mexp, 0, &st)); + err = 0; + (*failures)--; + goto out_err; + } + } + } + pr_debug("Didn't find parsed metric %s", pe->metric_name); + err = 1; +out_err: + if (err) + pr_debug("Broken metric %s\n", pe->metric_name); + + /* ... cleanup. */ + metricgroup__rblist_exit(&metric_events); + runtime_stat__exit(&st); + evlist__free_stats(evlist); + perf_cpu_map__put(cpus); + evlist__delete(evlist); + return err; +} + +static int test__parsing(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + int failures = 0; + + pmu_for_each_core_event(test__parsing_callback, &failures); + pmu_for_each_sys_event(test__parsing_callback, &failures); + + return failures == 0 ? TEST_OK : TEST_FAIL; +} + +struct test_metric { + const char *str; +}; + +static struct test_metric metrics[] = { + { "(unc_p_power_state_occupancy.cores_c0 / unc_p_clockticks) * 100." }, + { "imx8_ddr0@read\\-cycles@ * 4 * 4", }, + { "imx8_ddr0@axid\\-read\\,axi_mask\\=0xffff\\,axi_id\\=0x0000@ * 4", }, + { "(cstate_pkg@c2\\-residency@ / msr@tsc@) * 100", }, + { "(imx8_ddr0@read\\-cycles@ + imx8_ddr0@write\\-cycles@)", }, +}; + +static int metric_parse_fake(const char *str) +{ + struct expr_parse_ctx *ctx; + struct hashmap_entry *cur; + double result; + int ret = -1; + size_t bkt; + int i; + + pr_debug("parsing '%s'\n", str); + + ctx = expr__ctx_new(); + if (!ctx) { + pr_debug("expr__ctx_new failed"); + return TEST_FAIL; + } + if (expr__find_ids(str, NULL, ctx) < 0) { + pr_err("expr__find_ids failed\n"); + return -1; + } + + /* + * Add all ids with a made up value. The value may + * trigger divide by zero when subtracted and so try to + * make them unique. + */ + i = 1; + hashmap__for_each_entry(ctx->ids, cur, bkt) + expr__add_id_val(ctx, strdup(cur->key), i++); + + hashmap__for_each_entry(ctx->ids, cur, bkt) { + if (check_parse_fake(cur->key)) { + pr_err("check_parse_fake failed\n"); + goto out; + } + } + + ret = 0; + if (expr__parse(&result, ctx, str)) { + /* + * Parsing failed, make numbers go from large to small which can + * resolve divide by zero issues. + */ + i = 1024; + hashmap__for_each_entry(ctx->ids, cur, bkt) + expr__add_id_val(ctx, strdup(cur->key), i--); + if (expr__parse(&result, ctx, str)) { + pr_err("expr__parse failed\n"); + ret = -1; + } + } + +out: + expr__ctx_free(ctx); + return ret; +} + +static int test__parsing_fake_callback(const struct pmu_event *pe, + const struct pmu_events_table *table __maybe_unused, + void *data __maybe_unused) +{ + if (!pe->metric_expr) + return 0; + + return metric_parse_fake(pe->metric_expr); +} + +/* + * Parse all the metrics for current architecture, + * or all defined cpus via the 'fake_pmu' + * in parse_events. + */ +static int test__parsing_fake(struct test_suite *test __maybe_unused, + int subtest __maybe_unused) +{ + int err = 0; + + for (size_t i = 0; i < ARRAY_SIZE(metrics); i++) { + err = metric_parse_fake(metrics[i].str); + if (err) + return err; + } + + err = pmu_for_each_core_event(test__parsing_fake_callback, NULL); + if (err) + return err; + + return pmu_for_each_sys_event(test__parsing_fake_callback, NULL); +} + +static struct test_case pmu_events_tests[] = { + TEST_CASE("PMU event table sanity", pmu_event_table), + TEST_CASE("PMU event map aliases", aliases), + TEST_CASE_REASON("Parsing of PMU event table metrics", parsing, + "some metrics failed"), + TEST_CASE("Parsing of PMU event table metrics with fake PMUs", parsing_fake), + { .name = NULL, } +}; + +struct test_suite suite__pmu_events = { + .desc = "PMU events", + .test_cases = pmu_events_tests, +}; |