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-rw-r--r--tools/perf/tests/hists_filter.c327
1 files changed, 327 insertions, 0 deletions
diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c
new file mode 100644
index 000000000..123e07d35
--- /dev/null
+++ b/tools/perf/tests/hists_filter.c
@@ -0,0 +1,327 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "util/debug.h"
+#include "util/map.h"
+#include "util/symbol.h"
+#include "util/sort.h"
+#include "util/evsel.h"
+#include "util/event.h"
+#include "util/evlist.h"
+#include "util/machine.h"
+#include "util/parse-events.h"
+#include "tests/tests.h"
+#include "tests/hists_common.h"
+#include <linux/kernel.h>
+
+struct sample {
+ u32 pid;
+ u64 ip;
+ struct thread *thread;
+ struct map *map;
+ struct symbol *sym;
+ int socket;
+};
+
+/* For the numbers, see hists_common.c */
+static struct sample fake_samples[] = {
+ /* perf [kernel] schedule() */
+ { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, .socket = 0 },
+ /* perf [perf] main() */
+ { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, .socket = 0 },
+ /* perf [libc] malloc() */
+ { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, .socket = 0 },
+ /* perf [perf] main() */
+ { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, .socket = 0 }, /* will be merged */
+ /* perf [perf] cmd_record() */
+ { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, .socket = 1 },
+ /* perf [kernel] page_fault() */
+ { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, .socket = 1 },
+ /* bash [bash] main() */
+ { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_MAIN, .socket = 2 },
+ /* bash [bash] xmalloc() */
+ { .pid = FAKE_PID_BASH, .ip = FAKE_IP_BASH_XMALLOC, .socket = 2 },
+ /* bash [libc] malloc() */
+ { .pid = FAKE_PID_BASH, .ip = FAKE_IP_LIBC_MALLOC, .socket = 3 },
+ /* bash [kernel] page_fault() */
+ { .pid = FAKE_PID_BASH, .ip = FAKE_IP_KERNEL_PAGE_FAULT, .socket = 3 },
+};
+
+static int add_hist_entries(struct evlist *evlist,
+ struct machine *machine)
+{
+ struct evsel *evsel;
+ struct addr_location al;
+ struct perf_sample sample = { .period = 100, };
+ size_t i;
+
+ /*
+ * each evsel will have 10 samples but the 4th sample
+ * (perf [perf] main) will be collapsed to an existing entry
+ * so total 9 entries will be in the tree.
+ */
+ evlist__for_each_entry(evlist, evsel) {
+ for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
+ struct hist_entry_iter iter = {
+ .evsel = evsel,
+ .sample = &sample,
+ .ops = &hist_iter_normal,
+ .hide_unresolved = false,
+ };
+ struct hists *hists = evsel__hists(evsel);
+
+ /* make sure it has no filter at first */
+ hists->thread_filter = NULL;
+ hists->dso_filter = NULL;
+ hists->symbol_filter_str = NULL;
+
+ sample.cpumode = PERF_RECORD_MISC_USER;
+ sample.pid = fake_samples[i].pid;
+ sample.tid = fake_samples[i].pid;
+ sample.ip = fake_samples[i].ip;
+
+ if (machine__resolve(machine, &al, &sample) < 0)
+ goto out;
+
+ al.socket = fake_samples[i].socket;
+ if (hist_entry_iter__add(&iter, &al,
+ sysctl_perf_event_max_stack, NULL) < 0) {
+ addr_location__put(&al);
+ goto out;
+ }
+
+ fake_samples[i].thread = al.thread;
+ fake_samples[i].map = al.map;
+ fake_samples[i].sym = al.sym;
+ }
+ }
+
+ return 0;
+
+out:
+ pr_debug("Not enough memory for adding a hist entry\n");
+ return TEST_FAIL;
+}
+
+int test__hists_filter(struct test *test __maybe_unused, int subtest __maybe_unused)
+{
+ int err = TEST_FAIL;
+ struct machines machines;
+ struct machine *machine;
+ struct evsel *evsel;
+ struct evlist *evlist = evlist__new();
+
+ TEST_ASSERT_VAL("No memory", evlist);
+
+ err = parse_events(evlist, "cpu-clock", NULL);
+ if (err)
+ goto out;
+ err = parse_events(evlist, "task-clock", NULL);
+ if (err)
+ goto out;
+ err = TEST_FAIL;
+
+ /* default sort order (comm,dso,sym) will be used */
+ if (setup_sorting(NULL) < 0)
+ goto out;
+
+ machines__init(&machines);
+
+ /* setup threads/dso/map/symbols also */
+ machine = setup_fake_machine(&machines);
+ if (!machine)
+ goto out;
+
+ if (verbose > 1)
+ machine__fprintf(machine, stderr);
+
+ /* process sample events */
+ err = add_hist_entries(evlist, machine);
+ if (err < 0)
+ goto out;
+
+ evlist__for_each_entry(evlist, evsel) {
+ struct hists *hists = evsel__hists(evsel);
+
+ hists__collapse_resort(hists, NULL);
+ evsel__output_resort(evsel, NULL);
+
+ if (verbose > 2) {
+ pr_info("Normal histogram\n");
+ print_hists_out(hists);
+ }
+
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+ TEST_ASSERT_VAL("Unmatched nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] ==
+ hists->stats.nr_non_filtered_samples);
+ TEST_ASSERT_VAL("Unmatched nr hist entries",
+ hists->nr_entries == hists->nr_non_filtered_entries);
+ TEST_ASSERT_VAL("Unmatched total period",
+ hists->stats.total_period ==
+ hists->stats.total_non_filtered_period);
+
+ /* now applying thread filter for 'bash' */
+ hists->thread_filter = fake_samples[9].thread;
+ hists__filter_by_thread(hists);
+
+ if (verbose > 2) {
+ pr_info("Histogram for thread filter\n");
+ print_hists_out(hists);
+ }
+
+ /* normal stats should be invariant */
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+
+ /* but filter stats are changed */
+ TEST_ASSERT_VAL("Unmatched nr samples for thread filter",
+ hists->stats.nr_non_filtered_samples == 4);
+ TEST_ASSERT_VAL("Unmatched nr hist entries for thread filter",
+ hists->nr_non_filtered_entries == 4);
+ TEST_ASSERT_VAL("Unmatched total period for thread filter",
+ hists->stats.total_non_filtered_period == 400);
+
+ /* remove thread filter first */
+ hists->thread_filter = NULL;
+ hists__filter_by_thread(hists);
+
+ /* now applying dso filter for 'kernel' */
+ hists->dso_filter = fake_samples[0].map->dso;
+ hists__filter_by_dso(hists);
+
+ if (verbose > 2) {
+ pr_info("Histogram for dso filter\n");
+ print_hists_out(hists);
+ }
+
+ /* normal stats should be invariant */
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+
+ /* but filter stats are changed */
+ TEST_ASSERT_VAL("Unmatched nr samples for dso filter",
+ hists->stats.nr_non_filtered_samples == 3);
+ TEST_ASSERT_VAL("Unmatched nr hist entries for dso filter",
+ hists->nr_non_filtered_entries == 3);
+ TEST_ASSERT_VAL("Unmatched total period for dso filter",
+ hists->stats.total_non_filtered_period == 300);
+
+ /* remove dso filter first */
+ hists->dso_filter = NULL;
+ hists__filter_by_dso(hists);
+
+ /*
+ * now applying symbol filter for 'main'. Also note that
+ * there's 3 samples that have 'main' symbol but the 4th
+ * entry of fake_samples was collapsed already so it won't
+ * be counted as a separate entry but the sample count and
+ * total period will be remained.
+ */
+ hists->symbol_filter_str = "main";
+ hists__filter_by_symbol(hists);
+
+ if (verbose > 2) {
+ pr_info("Histogram for symbol filter\n");
+ print_hists_out(hists);
+ }
+
+ /* normal stats should be invariant */
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+
+ /* but filter stats are changed */
+ TEST_ASSERT_VAL("Unmatched nr samples for symbol filter",
+ hists->stats.nr_non_filtered_samples == 3);
+ TEST_ASSERT_VAL("Unmatched nr hist entries for symbol filter",
+ hists->nr_non_filtered_entries == 2);
+ TEST_ASSERT_VAL("Unmatched total period for symbol filter",
+ hists->stats.total_non_filtered_period == 300);
+
+ /* remove symbol filter first */
+ hists->symbol_filter_str = NULL;
+ hists__filter_by_symbol(hists);
+
+ /* now applying socket filters */
+ hists->socket_filter = 2;
+ hists__filter_by_socket(hists);
+
+ if (verbose > 2) {
+ pr_info("Histogram for socket filters\n");
+ print_hists_out(hists);
+ }
+
+ /* normal stats should be invariant */
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+
+ /* but filter stats are changed */
+ TEST_ASSERT_VAL("Unmatched nr samples for socket filter",
+ hists->stats.nr_non_filtered_samples == 2);
+ TEST_ASSERT_VAL("Unmatched nr hist entries for socket filter",
+ hists->nr_non_filtered_entries == 2);
+ TEST_ASSERT_VAL("Unmatched total period for socket filter",
+ hists->stats.total_non_filtered_period == 200);
+
+ /* remove socket filter first */
+ hists->socket_filter = -1;
+ hists__filter_by_socket(hists);
+
+ /* now applying all filters at once. */
+ hists->thread_filter = fake_samples[1].thread;
+ hists->dso_filter = fake_samples[1].map->dso;
+ hists__filter_by_thread(hists);
+ hists__filter_by_dso(hists);
+
+ if (verbose > 2) {
+ pr_info("Histogram for all filters\n");
+ print_hists_out(hists);
+ }
+
+ /* normal stats should be invariant */
+ TEST_ASSERT_VAL("Invalid nr samples",
+ hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+ TEST_ASSERT_VAL("Invalid nr hist entries",
+ hists->nr_entries == 9);
+ TEST_ASSERT_VAL("Invalid total period",
+ hists->stats.total_period == 1000);
+
+ /* but filter stats are changed */
+ TEST_ASSERT_VAL("Unmatched nr samples for all filter",
+ hists->stats.nr_non_filtered_samples == 2);
+ TEST_ASSERT_VAL("Unmatched nr hist entries for all filter",
+ hists->nr_non_filtered_entries == 1);
+ TEST_ASSERT_VAL("Unmatched total period for all filter",
+ hists->stats.total_non_filtered_period == 200);
+ }
+
+
+ err = TEST_OK;
+
+out:
+ /* tear down everything */
+ evlist__delete(evlist);
+ reset_output_field();
+ machines__exit(&machines);
+
+ return err;
+}
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