diff options
author | Namhyung Kim <namhyung@kernel.org> | 2020-09-24 15:44:55 +0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-09-28 15:21:05 +0300 |
commit | 40b74c30ffb97c668e9745a098101fecaaec0ea2 (patch) | |
tree | e866ad5286f98e6b2aeb3c84aed0180dac4d8f8f /tools/perf | |
parent | 89fb1ca2abb7fba6587a5768cfee9f89daf9be6f (diff) | |
download | linux-40b74c30ffb97c668e9745a098101fecaaec0ea2.tar.xz |
perf test: Add expand cgroup event test
It'll expand given events for cgroups A, B and C.
$ perf test -v expansion
69: Event expansion for cgroups :
--- start ---
test child forked, pid 983140
metric expr 1 / IPC for CPI
metric expr instructions / cycles for IPC
found event instructions
found event cycles
adding {instructions,cycles}:W
copying metric event for cgroup 'A': instructions (idx=0)
copying metric event for cgroup 'B': instructions (idx=0)
copying metric event for cgroup 'C': instructions (idx=0)
test child finished with 0
---- end ----
Event expansion for cgroups: Ok
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200924124455.336326-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/tests/Build | 1 | ||||
-rw-r--r-- | tools/perf/tests/builtin-test.c | 4 | ||||
-rw-r--r-- | tools/perf/tests/expand-cgroup.c | 241 | ||||
-rw-r--r-- | tools/perf/tests/tests.h | 1 |
4 files changed, 247 insertions, 0 deletions
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build index 69bea7996f18..4d15bf6041fb 100644 --- a/tools/perf/tests/Build +++ b/tools/perf/tests/Build @@ -61,6 +61,7 @@ perf-y += demangle-java-test.o perf-y += pfm.o perf-y += parse-metric.o perf-y += pe-file-parsing.o +perf-y += expand-cgroup.o $(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c tests/Build $(call rule_mkdir) diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 651b8ea3354a..132bdb3e6c31 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -346,6 +346,10 @@ static struct test generic_tests[] = { .func = test__pe_file_parsing, }, { + .desc = "Event expansion for cgroups", + .func = test__expand_cgroup_events, + }, + { .func = NULL, }, }; diff --git a/tools/perf/tests/expand-cgroup.c b/tools/perf/tests/expand-cgroup.c new file mode 100644 index 000000000000..d5771e4d094f --- /dev/null +++ b/tools/perf/tests/expand-cgroup.c @@ -0,0 +1,241 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "tests.h" +#include "debug.h" +#include "evlist.h" +#include "cgroup.h" +#include "rblist.h" +#include "metricgroup.h" +#include "parse-events.h" +#include "pmu-events/pmu-events.h" +#include "pfm.h" +#include <subcmd/parse-options.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +static int test_expand_events(struct evlist *evlist, + struct rblist *metric_events) +{ + int i, ret = TEST_FAIL; + int nr_events; + bool was_group_event; + int nr_members; /* for the first evsel only */ + const char cgrp_str[] = "A,B,C"; + const char *cgrp_name[] = { "A", "B", "C" }; + int nr_cgrps = ARRAY_SIZE(cgrp_name); + char **ev_name; + struct evsel *evsel; + + TEST_ASSERT_VAL("evlist is empty", !perf_evlist__empty(evlist)); + + nr_events = evlist->core.nr_entries; + ev_name = calloc(nr_events, sizeof(*ev_name)); + if (ev_name == NULL) { + pr_debug("memory allocation failure\n"); + return TEST_FAIL; + } + i = 0; + evlist__for_each_entry(evlist, evsel) { + ev_name[i] = strdup(evsel->name); + if (ev_name[i] == NULL) { + pr_debug("memory allocation failure\n"); + goto out; + } + i++; + } + /* remember grouping info */ + was_group_event = evsel__is_group_event(evlist__first(evlist)); + nr_members = evlist__first(evlist)->core.nr_members; + + ret = evlist__expand_cgroup(evlist, cgrp_str, metric_events, false); + if (ret < 0) { + pr_debug("failed to expand events for cgroups\n"); + goto out; + } + + ret = TEST_FAIL; + if (evlist->core.nr_entries != nr_events * nr_cgrps) { + pr_debug("event count doesn't match\n"); + goto out; + } + + i = 0; + evlist__for_each_entry(evlist, evsel) { + if (strcmp(evsel->name, ev_name[i % nr_events])) { + pr_debug("event name doesn't match:\n"); + pr_debug(" evsel[%d]: %s\n expected: %s\n", + i, evsel->name, ev_name[i % nr_events]); + goto out; + } + if (strcmp(evsel->cgrp->name, cgrp_name[i / nr_events])) { + pr_debug("cgroup name doesn't match:\n"); + pr_debug(" evsel[%d]: %s\n expected: %s\n", + i, evsel->cgrp->name, cgrp_name[i / nr_events]); + goto out; + } + + if ((i % nr_events) == 0) { + if (evsel__is_group_event(evsel) != was_group_event) { + pr_debug("event group doesn't match: got %s, expect %s\n", + evsel__is_group_event(evsel) ? "true" : "false", + was_group_event ? "true" : "false"); + goto out; + } + if (evsel->core.nr_members != nr_members) { + pr_debug("event group member doesn't match: %d vs %d\n", + evsel->core.nr_members, nr_members); + goto out; + } + } + i++; + } + ret = TEST_OK; + +out: for (i = 0; i < nr_events; i++) + free(ev_name[i]); + free(ev_name); + return ret; +} + +static int expand_default_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + + evlist = perf_evlist__new_default(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + rblist__init(&metric_events); + ret = test_expand_events(evlist, &metric_events); + evlist__delete(evlist); + return ret; +} + +static int expand_group_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + struct parse_events_error err; + const char event_str[] = "{cycles,instructions}"; + + symbol_conf.event_group = true; + + evlist = evlist__new(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + ret = parse_events(evlist, event_str, &err); + if (ret < 0) { + pr_debug("failed to parse event '%s', err %d, str '%s'\n", + event_str, ret, err.str); + parse_events_print_error(&err, event_str); + goto out; + } + + rblist__init(&metric_events); + ret = test_expand_events(evlist, &metric_events); +out: + evlist__delete(evlist); + return ret; +} + +static int expand_libpfm_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + const char event_str[] = "UNHALTED_CORE_CYCLES"; + struct option opt = { + .value = &evlist, + }; + + symbol_conf.event_group = true; + + evlist = evlist__new(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + ret = parse_libpfm_events_option(&opt, event_str, 0); + if (ret < 0) { + pr_debug("failed to parse libpfm event '%s', err %d\n", + event_str, ret); + goto out; + } + if (perf_evlist__empty(evlist)) { + pr_debug("libpfm was not enabled\n"); + goto out; + } + + rblist__init(&metric_events); + ret = test_expand_events(evlist, &metric_events); +out: + evlist__delete(evlist); + return ret; +} + +static int expand_metric_events(void) +{ + int ret; + struct evlist *evlist; + struct rblist metric_events; + const char metric_str[] = "CPI"; + + struct pmu_event pme_test[] = { + { + .metric_expr = "instructions / cycles", + .metric_name = "IPC", + }, + { + .metric_expr = "1 / IPC", + .metric_name = "CPI", + }, + { + .metric_expr = NULL, + .metric_name = NULL, + }, + }; + struct pmu_events_map ev_map = { + .cpuid = "test", + .version = "1", + .type = "core", + .table = pme_test, + }; + + evlist = evlist__new(); + TEST_ASSERT_VAL("failed to get evlist", evlist); + + rblist__init(&metric_events); + ret = metricgroup__parse_groups_test(evlist, &ev_map, metric_str, + false, false, &metric_events); + if (ret < 0) { + pr_debug("failed to parse '%s' metric\n", metric_str); + goto out; + } + + ret = test_expand_events(evlist, &metric_events); + +out: + metricgroup__rblist_exit(&metric_events); + evlist__delete(evlist); + return ret; +} + +int test__expand_cgroup_events(struct test *test __maybe_unused, + int subtest __maybe_unused) +{ + int ret; + + ret = expand_default_events(); + TEST_ASSERT_EQUAL("failed to expand default events", ret, 0); + + ret = expand_group_events(); + TEST_ASSERT_EQUAL("failed to expand event group", ret, 0); + + ret = expand_libpfm_events(); + TEST_ASSERT_EQUAL("failed to expand event group", ret, 0); + + ret = expand_metric_events(); + TEST_ASSERT_EQUAL("failed to expand metric events", ret, 0); + + return ret; +} diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index ef0f33c6ba23..c85a2c08e407 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -123,6 +123,7 @@ const char *test__pfm_subtest_get_desc(int subtest); int test__pfm_subtest_get_nr(void); int test__parse_metric(struct test *test, int subtest); int test__pe_file_parsing(struct test *test, int subtest); +int test__expand_cgroup_events(struct test *test, int subtest); bool test__bp_signal_is_supported(void); bool test__bp_account_is_supported(void); |