![Wang Nan](/assets/img/avatar_default.png)
This test checks reading from backward ring buffer. Test result: # ~/perf test 'ring buffer' 45: Test backward reading from ring buffer : Ok The test case is a while loop which calls prctl(PR_SET_NAME) multiple times. Each prctl should issue 2 events: one PERF_RECORD_SAMPLE, one PERF_RECORD_COMM. The first round creates a relative large ring buffer (256 pages). It can afford all events. Read from it and check the count of each type of events. The second round creates a small ring buffer (1 page) and makes it overwritable. Check the correctness of the buffer. Signed-off-by: Wang Nan <wangnan0@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1462758471-89706-3-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
#ifndef TESTS_H
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#define TESTS_H
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#include <stdbool.h>
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#define TEST_ASSERT_VAL(text, cond) \
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do { \
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if (!(cond)) { \
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pr_debug("FAILED %s:%d %s\n", __FILE__, __LINE__, text); \
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return -1; \
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} \
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} while (0)
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#define TEST_ASSERT_EQUAL(text, val, expected) \
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do { \
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if (val != expected) { \
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pr_debug("FAILED %s:%d %s (%d != %d)\n", \
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__FILE__, __LINE__, text, val, expected); \
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return -1; \
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} \
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} while (0)
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enum {
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TEST_OK = 0,
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TEST_FAIL = -1,
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TEST_SKIP = -2,
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};
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struct test {
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const char *desc;
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int (*func)(int subtest);
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struct {
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bool skip_if_fail;
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int (*get_nr)(void);
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const char *(*get_desc)(int subtest);
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} subtest;
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};
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/* Tests */
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int test__vmlinux_matches_kallsyms(int subtest);
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int test__openat_syscall_event(int subtest);
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int test__openat_syscall_event_on_all_cpus(int subtest);
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int test__basic_mmap(int subtest);
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int test__PERF_RECORD(int subtest);
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int test__perf_evsel__roundtrip_name_test(int subtest);
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int test__perf_evsel__tp_sched_test(int subtest);
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int test__syscall_openat_tp_fields(int subtest);
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int test__pmu(int subtest);
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int test__attr(int subtest);
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int test__dso_data(int subtest);
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int test__dso_data_cache(int subtest);
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int test__dso_data_reopen(int subtest);
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int test__parse_events(int subtest);
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int test__hists_link(int subtest);
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int test__python_use(int subtest);
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int test__bp_signal(int subtest);
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int test__bp_signal_overflow(int subtest);
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int test__task_exit(int subtest);
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int test__sw_clock_freq(int subtest);
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int test__code_reading(int subtest);
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int test__sample_parsing(int subtest);
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int test__keep_tracking(int subtest);
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int test__parse_no_sample_id_all(int subtest);
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int test__dwarf_unwind(int subtest);
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int test__hists_filter(int subtest);
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int test__mmap_thread_lookup(int subtest);
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int test__thread_mg_share(int subtest);
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int test__hists_output(int subtest);
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int test__hists_cumulate(int subtest);
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int test__switch_tracking(int subtest);
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int test__fdarray__filter(int subtest);
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int test__fdarray__add(int subtest);
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int test__kmod_path__parse(int subtest);
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int test__thread_map(int subtest);
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int test__llvm(int subtest);
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const char *test__llvm_subtest_get_desc(int subtest);
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int test__llvm_subtest_get_nr(void);
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int test__bpf(int subtest);
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const char *test__bpf_subtest_get_desc(int subtest);
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int test__bpf_subtest_get_nr(void);
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int test_session_topology(int subtest);
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int test__thread_map_synthesize(int subtest);
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int test__cpu_map_synthesize(int subtest);
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int test__synthesize_stat_config(int subtest);
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int test__synthesize_stat(int subtest);
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int test__synthesize_stat_round(int subtest);
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int test__event_update(int subtest);
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int test__event_times(int subtest);
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int test__backward_ring_buffer(int subtest);
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#if defined(__arm__) || defined(__aarch64__)
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#ifdef HAVE_DWARF_UNWIND_SUPPORT
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struct thread;
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struct perf_sample;
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int test__arch_unwind_sample(struct perf_sample *sample,
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struct thread *thread);
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#endif
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#endif
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#endif /* TESTS_H */
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