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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
![Fabian Hemmer](/assets/img/avatar_default.png)
Detect symbols generated by the OCaml compiler based on their prefix. Demangle OCaml symbols, returning a newly allocated string (like the existing Java demangling functionality). Move a helper function (hex) from tests/code-reading.c to util/string.c To test: echo 'Printf.printf "%d\n" (Random.int 42)' > test.ml perf record ocamlopt.opt test.ml perf report -d ocamlopt.opt Signed-off-by: Fabian Hemmer <copy@copy.sh> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> LPU-Reference: 20210203211537.b25ytjb6dq5jfbwx@nyu Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
826 lines
16 KiB
C
826 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* builtin-test.c
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*
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* Builtin regression testing command: ever growing number of sanity tests
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*/
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#include <fcntl.h>
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#include <errno.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include "builtin.h"
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#include "hist.h"
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#include "intlist.h"
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#include "tests.h"
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#include "debug.h"
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#include "color.h"
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#include <subcmd/parse-options.h>
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#include "string2.h"
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#include "symbol.h"
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#include "util/rlimit.h"
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <subcmd/exec-cmd.h>
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static bool dont_fork;
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struct test __weak arch_tests[] = {
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{
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.func = NULL,
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},
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};
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static struct test generic_tests[] = {
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{
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.desc = "vmlinux symtab matches kallsyms",
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.func = test__vmlinux_matches_kallsyms,
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},
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{
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.desc = "Detect openat syscall event",
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.func = test__openat_syscall_event,
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},
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{
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.desc = "Detect openat syscall event on all cpus",
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.func = test__openat_syscall_event_on_all_cpus,
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},
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{
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.desc = "Read samples using the mmap interface",
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.func = test__basic_mmap,
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},
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{
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.desc = "Test data source output",
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.func = test__mem,
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},
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{
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.desc = "Parse event definition strings",
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.func = test__parse_events,
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},
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{
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.desc = "Simple expression parser",
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.func = test__expr,
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},
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{
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.desc = "PERF_RECORD_* events & perf_sample fields",
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.func = test__PERF_RECORD,
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},
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{
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.desc = "Parse perf pmu format",
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.func = test__pmu,
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},
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{
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.desc = "PMU events",
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.func = test__pmu_events,
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.subtest = {
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.skip_if_fail = false,
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.get_nr = test__pmu_events_subtest_get_nr,
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.get_desc = test__pmu_events_subtest_get_desc,
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.skip_reason = test__pmu_events_subtest_skip_reason,
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},
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},
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{
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.desc = "DSO data read",
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.func = test__dso_data,
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},
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{
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.desc = "DSO data cache",
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.func = test__dso_data_cache,
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},
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{
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.desc = "DSO data reopen",
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.func = test__dso_data_reopen,
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},
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{
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.desc = "Roundtrip evsel->name",
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.func = test__perf_evsel__roundtrip_name_test,
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},
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{
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.desc = "Parse sched tracepoints fields",
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.func = test__perf_evsel__tp_sched_test,
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},
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{
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.desc = "syscalls:sys_enter_openat event fields",
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.func = test__syscall_openat_tp_fields,
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},
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{
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.desc = "Setup struct perf_event_attr",
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.func = test__attr,
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},
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{
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.desc = "Match and link multiple hists",
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.func = test__hists_link,
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},
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{
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.desc = "'import perf' in python",
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.func = test__python_use,
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},
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{
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.desc = "Breakpoint overflow signal handler",
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.func = test__bp_signal,
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.is_supported = test__bp_signal_is_supported,
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},
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{
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.desc = "Breakpoint overflow sampling",
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.func = test__bp_signal_overflow,
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.is_supported = test__bp_signal_is_supported,
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},
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{
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.desc = "Breakpoint accounting",
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.func = test__bp_accounting,
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.is_supported = test__bp_account_is_supported,
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},
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{
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.desc = "Watchpoint",
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.func = test__wp,
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.is_supported = test__wp_is_supported,
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.subtest = {
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.skip_if_fail = false,
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.get_nr = test__wp_subtest_get_nr,
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.get_desc = test__wp_subtest_get_desc,
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.skip_reason = test__wp_subtest_skip_reason,
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},
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},
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{
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.desc = "Number of exit events of a simple workload",
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.func = test__task_exit,
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},
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{
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.desc = "Software clock events period values",
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.func = test__sw_clock_freq,
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},
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{
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.desc = "Object code reading",
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.func = test__code_reading,
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},
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{
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.desc = "Sample parsing",
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.func = test__sample_parsing,
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},
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{
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.desc = "Use a dummy software event to keep tracking",
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.func = test__keep_tracking,
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},
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{
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.desc = "Parse with no sample_id_all bit set",
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.func = test__parse_no_sample_id_all,
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},
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{
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.desc = "Filter hist entries",
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.func = test__hists_filter,
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},
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{
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.desc = "Lookup mmap thread",
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.func = test__mmap_thread_lookup,
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},
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{
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.desc = "Share thread maps",
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.func = test__thread_maps_share,
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},
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{
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.desc = "Sort output of hist entries",
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.func = test__hists_output,
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},
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{
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.desc = "Cumulate child hist entries",
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.func = test__hists_cumulate,
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},
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{
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.desc = "Track with sched_switch",
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.func = test__switch_tracking,
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},
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{
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.desc = "Filter fds with revents mask in a fdarray",
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.func = test__fdarray__filter,
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},
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{
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.desc = "Add fd to a fdarray, making it autogrow",
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.func = test__fdarray__add,
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},
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{
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.desc = "kmod_path__parse",
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.func = test__kmod_path__parse,
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},
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{
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.desc = "Thread map",
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.func = test__thread_map,
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},
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{
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.desc = "LLVM search and compile",
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.func = test__llvm,
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.subtest = {
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.skip_if_fail = true,
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.get_nr = test__llvm_subtest_get_nr,
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.get_desc = test__llvm_subtest_get_desc,
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},
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},
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{
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.desc = "Session topology",
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.func = test__session_topology,
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},
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{
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.desc = "BPF filter",
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.func = test__bpf,
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.subtest = {
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.skip_if_fail = true,
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.get_nr = test__bpf_subtest_get_nr,
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.get_desc = test__bpf_subtest_get_desc,
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},
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},
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{
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.desc = "Synthesize thread map",
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.func = test__thread_map_synthesize,
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},
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{
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.desc = "Remove thread map",
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.func = test__thread_map_remove,
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},
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{
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.desc = "Synthesize cpu map",
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.func = test__cpu_map_synthesize,
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},
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{
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.desc = "Synthesize stat config",
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.func = test__synthesize_stat_config,
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},
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{
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.desc = "Synthesize stat",
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.func = test__synthesize_stat,
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},
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{
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.desc = "Synthesize stat round",
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.func = test__synthesize_stat_round,
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},
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{
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.desc = "Synthesize attr update",
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.func = test__event_update,
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},
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{
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.desc = "Event times",
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.func = test__event_times,
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},
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{
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.desc = "Read backward ring buffer",
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.func = test__backward_ring_buffer,
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},
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{
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.desc = "Print cpu map",
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.func = test__cpu_map_print,
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},
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{
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.desc = "Merge cpu map",
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.func = test__cpu_map_merge,
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},
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{
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.desc = "Probe SDT events",
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.func = test__sdt_event,
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},
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{
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.desc = "is_printable_array",
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.func = test__is_printable_array,
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},
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{
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.desc = "Print bitmap",
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.func = test__bitmap_print,
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},
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{
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.desc = "perf hooks",
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.func = test__perf_hooks,
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},
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{
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.desc = "builtin clang support",
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.func = test__clang,
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.subtest = {
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.skip_if_fail = true,
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.get_nr = test__clang_subtest_get_nr,
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.get_desc = test__clang_subtest_get_desc,
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}
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},
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{
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.desc = "unit_number__scnprintf",
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.func = test__unit_number__scnprint,
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},
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{
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.desc = "mem2node",
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.func = test__mem2node,
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},
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{
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.desc = "time utils",
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.func = test__time_utils,
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},
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{
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.desc = "Test jit_write_elf",
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.func = test__jit_write_elf,
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},
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{
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.desc = "Test libpfm4 support",
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.func = test__pfm,
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.subtest = {
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.skip_if_fail = true,
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.get_nr = test__pfm_subtest_get_nr,
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.get_desc = test__pfm_subtest_get_desc,
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}
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},
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{
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.desc = "Test api io",
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.func = test__api_io,
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},
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{
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.desc = "maps__merge_in",
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.func = test__maps__merge_in,
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},
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{
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.desc = "Demangle Java",
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.func = test__demangle_java,
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},
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{
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.desc = "Demangle OCaml",
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.func = test__demangle_ocaml,
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},
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{
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.desc = "Parse and process metrics",
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.func = test__parse_metric,
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},
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{
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.desc = "PE file support",
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.func = test__pe_file_parsing,
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},
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{
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.desc = "Event expansion for cgroups",
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.func = test__expand_cgroup_events,
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},
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{
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.desc = "Convert perf time to TSC",
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.func = test__perf_time_to_tsc,
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.is_supported = test__tsc_is_supported,
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},
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{
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.func = NULL,
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},
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};
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static struct test *tests[] = {
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generic_tests,
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arch_tests,
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};
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static bool perf_test__matches(const char *desc, int curr, int argc, const char *argv[])
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{
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int i;
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if (argc == 0)
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return true;
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for (i = 0; i < argc; ++i) {
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char *end;
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long nr = strtoul(argv[i], &end, 10);
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if (*end == '\0') {
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if (nr == curr + 1)
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return true;
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continue;
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}
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if (strcasestr(desc, argv[i]))
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return true;
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}
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return false;
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}
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static int run_test(struct test *test, int subtest)
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{
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int status, err = -1, child = dont_fork ? 0 : fork();
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char sbuf[STRERR_BUFSIZE];
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if (child < 0) {
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pr_err("failed to fork test: %s\n",
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str_error_r(errno, sbuf, sizeof(sbuf)));
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return -1;
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}
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if (!child) {
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if (!dont_fork) {
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pr_debug("test child forked, pid %d\n", getpid());
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if (verbose <= 0) {
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int nullfd = open("/dev/null", O_WRONLY);
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if (nullfd >= 0) {
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close(STDERR_FILENO);
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close(STDOUT_FILENO);
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dup2(nullfd, STDOUT_FILENO);
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dup2(STDOUT_FILENO, STDERR_FILENO);
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close(nullfd);
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}
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} else {
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signal(SIGSEGV, sighandler_dump_stack);
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signal(SIGFPE, sighandler_dump_stack);
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}
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}
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err = test->func(test, subtest);
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if (!dont_fork)
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exit(err);
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}
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if (!dont_fork) {
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wait(&status);
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if (WIFEXITED(status)) {
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err = (signed char)WEXITSTATUS(status);
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pr_debug("test child finished with %d\n", err);
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} else if (WIFSIGNALED(status)) {
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err = -1;
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pr_debug("test child interrupted\n");
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}
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}
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return err;
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}
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#define for_each_test(j, t) \
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for (j = 0; j < ARRAY_SIZE(tests); j++) \
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for (t = &tests[j][0]; t->func; t++)
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static int test_and_print(struct test *t, bool force_skip, int subtest)
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{
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int err;
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if (!force_skip) {
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pr_debug("\n--- start ---\n");
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err = run_test(t, subtest);
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pr_debug("---- end ----\n");
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} else {
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pr_debug("\n--- force skipped ---\n");
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err = TEST_SKIP;
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}
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if (!t->subtest.get_nr)
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pr_debug("%s:", t->desc);
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else
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pr_debug("%s subtest %d:", t->desc, subtest + 1);
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switch (err) {
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case TEST_OK:
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pr_info(" Ok\n");
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break;
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case TEST_SKIP: {
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const char *skip_reason = NULL;
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if (t->subtest.skip_reason)
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skip_reason = t->subtest.skip_reason(subtest);
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if (skip_reason)
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color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (%s)\n", skip_reason);
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else
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color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
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}
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break;
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case TEST_FAIL:
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default:
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color_fprintf(stderr, PERF_COLOR_RED, " FAILED!\n");
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break;
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}
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return err;
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}
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static const char *shell_test__description(char *description, size_t size,
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const char *path, const char *name)
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{
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FILE *fp;
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char filename[PATH_MAX];
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path__join(filename, sizeof(filename), path, name);
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fp = fopen(filename, "r");
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if (!fp)
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return NULL;
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/* Skip shebang */
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while (fgetc(fp) != '\n');
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description = fgets(description, size, fp);
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fclose(fp);
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return description ? strim(description + 1) : NULL;
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}
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#define for_each_shell_test(dir, base, ent) \
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while ((ent = readdir(dir)) != NULL) \
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if (!is_directory(base, ent) && ent->d_name[0] != '.')
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static const char *shell_tests__dir(char *path, size_t size)
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{
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const char *devel_dirs[] = { "./tools/perf/tests", "./tests", };
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char *exec_path;
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(devel_dirs); ++i) {
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struct stat st;
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if (!lstat(devel_dirs[i], &st)) {
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scnprintf(path, size, "%s/shell", devel_dirs[i]);
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if (!lstat(devel_dirs[i], &st))
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return path;
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}
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}
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/* Then installed path. */
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exec_path = get_argv_exec_path();
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scnprintf(path, size, "%s/tests/shell", exec_path);
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free(exec_path);
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return path;
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}
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static int shell_tests__max_desc_width(void)
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{
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DIR *dir;
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struct dirent *ent;
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char path_dir[PATH_MAX];
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const char *path = shell_tests__dir(path_dir, sizeof(path_dir));
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int width = 0;
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|
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if (path == NULL)
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return -1;
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dir = opendir(path);
|
|
if (!dir)
|
|
return -1;
|
|
|
|
for_each_shell_test(dir, path, ent) {
|
|
char bf[256];
|
|
const char *desc = shell_test__description(bf, sizeof(bf), path, ent->d_name);
|
|
|
|
if (desc) {
|
|
int len = strlen(desc);
|
|
|
|
if (width < len)
|
|
width = len;
|
|
}
|
|
}
|
|
|
|
closedir(dir);
|
|
return width;
|
|
}
|
|
|
|
struct shell_test {
|
|
const char *dir;
|
|
const char *file;
|
|
};
|
|
|
|
static int shell_test__run(struct test *test, int subdir __maybe_unused)
|
|
{
|
|
int err;
|
|
char script[PATH_MAX];
|
|
struct shell_test *st = test->priv;
|
|
|
|
path__join(script, sizeof(script), st->dir, st->file);
|
|
|
|
err = system(script);
|
|
if (!err)
|
|
return TEST_OK;
|
|
|
|
return WEXITSTATUS(err) == 2 ? TEST_SKIP : TEST_FAIL;
|
|
}
|
|
|
|
static int run_shell_tests(int argc, const char *argv[], int i, int width)
|
|
{
|
|
DIR *dir;
|
|
struct dirent *ent;
|
|
char path_dir[PATH_MAX];
|
|
struct shell_test st = {
|
|
.dir = shell_tests__dir(path_dir, sizeof(path_dir)),
|
|
};
|
|
|
|
if (st.dir == NULL)
|
|
return -1;
|
|
|
|
dir = opendir(st.dir);
|
|
if (!dir) {
|
|
pr_err("failed to open shell test directory: %s\n",
|
|
st.dir);
|
|
return -1;
|
|
}
|
|
|
|
for_each_shell_test(dir, st.dir, ent) {
|
|
int curr = i++;
|
|
char desc[256];
|
|
struct test test = {
|
|
.desc = shell_test__description(desc, sizeof(desc), st.dir, ent->d_name),
|
|
.func = shell_test__run,
|
|
.priv = &st,
|
|
};
|
|
|
|
if (!perf_test__matches(test.desc, curr, argc, argv))
|
|
continue;
|
|
|
|
st.file = ent->d_name;
|
|
pr_info("%2d: %-*s:", i, width, test.desc);
|
|
test_and_print(&test, false, -1);
|
|
}
|
|
|
|
closedir(dir);
|
|
return 0;
|
|
}
|
|
|
|
static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
|
|
{
|
|
struct test *t;
|
|
unsigned int j;
|
|
int i = 0;
|
|
int width = shell_tests__max_desc_width();
|
|
|
|
for_each_test(j, t) {
|
|
int len = strlen(t->desc);
|
|
|
|
if (width < len)
|
|
width = len;
|
|
}
|
|
|
|
for_each_test(j, t) {
|
|
int curr = i++, err;
|
|
int subi;
|
|
|
|
if (!perf_test__matches(t->desc, curr, argc, argv)) {
|
|
bool skip = true;
|
|
int subn;
|
|
|
|
if (!t->subtest.get_nr)
|
|
continue;
|
|
|
|
subn = t->subtest.get_nr();
|
|
|
|
for (subi = 0; subi < subn; subi++) {
|
|
if (perf_test__matches(t->subtest.get_desc(subi), curr, argc, argv))
|
|
skip = false;
|
|
}
|
|
|
|
if (skip)
|
|
continue;
|
|
}
|
|
|
|
if (t->is_supported && !t->is_supported()) {
|
|
pr_debug("%2d: %-*s: Disabled\n", i, width, t->desc);
|
|
continue;
|
|
}
|
|
|
|
pr_info("%2d: %-*s:", i, width, t->desc);
|
|
|
|
if (intlist__find(skiplist, i)) {
|
|
color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
|
|
continue;
|
|
}
|
|
|
|
if (!t->subtest.get_nr) {
|
|
test_and_print(t, false, -1);
|
|
} else {
|
|
int subn = t->subtest.get_nr();
|
|
/*
|
|
* minus 2 to align with normal testcases.
|
|
* For subtest we print additional '.x' in number.
|
|
* for example:
|
|
*
|
|
* 35: Test LLVM searching and compiling :
|
|
* 35.1: Basic BPF llvm compiling test : Ok
|
|
*/
|
|
int subw = width > 2 ? width - 2 : width;
|
|
bool skip = false;
|
|
|
|
if (subn <= 0) {
|
|
color_fprintf(stderr, PERF_COLOR_YELLOW,
|
|
" Skip (not compiled in)\n");
|
|
continue;
|
|
}
|
|
pr_info("\n");
|
|
|
|
for (subi = 0; subi < subn; subi++) {
|
|
int len = strlen(t->subtest.get_desc(subi));
|
|
|
|
if (subw < len)
|
|
subw = len;
|
|
}
|
|
|
|
for (subi = 0; subi < subn; subi++) {
|
|
if (!perf_test__matches(t->subtest.get_desc(subi), curr, argc, argv))
|
|
continue;
|
|
|
|
pr_info("%2d.%1d: %-*s:", i, subi + 1, subw,
|
|
t->subtest.get_desc(subi));
|
|
err = test_and_print(t, skip, subi);
|
|
if (err != TEST_OK && t->subtest.skip_if_fail)
|
|
skip = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return run_shell_tests(argc, argv, i, width);
|
|
}
|
|
|
|
static int perf_test__list_shell(int argc, const char **argv, int i)
|
|
{
|
|
DIR *dir;
|
|
struct dirent *ent;
|
|
char path_dir[PATH_MAX];
|
|
const char *path = shell_tests__dir(path_dir, sizeof(path_dir));
|
|
|
|
if (path == NULL)
|
|
return -1;
|
|
|
|
dir = opendir(path);
|
|
if (!dir)
|
|
return -1;
|
|
|
|
for_each_shell_test(dir, path, ent) {
|
|
int curr = i++;
|
|
char bf[256];
|
|
struct test t = {
|
|
.desc = shell_test__description(bf, sizeof(bf), path, ent->d_name),
|
|
};
|
|
|
|
if (!perf_test__matches(t.desc, curr, argc, argv))
|
|
continue;
|
|
|
|
pr_info("%2d: %s\n", i, t.desc);
|
|
}
|
|
|
|
closedir(dir);
|
|
return 0;
|
|
}
|
|
|
|
static int perf_test__list(int argc, const char **argv)
|
|
{
|
|
unsigned int j;
|
|
struct test *t;
|
|
int i = 0;
|
|
|
|
for_each_test(j, t) {
|
|
int curr = i++;
|
|
|
|
if (!perf_test__matches(t->desc, curr, argc, argv) ||
|
|
(t->is_supported && !t->is_supported()))
|
|
continue;
|
|
|
|
pr_info("%2d: %s\n", i, t->desc);
|
|
|
|
if (t->subtest.get_nr) {
|
|
int subn = t->subtest.get_nr();
|
|
int subi;
|
|
|
|
for (subi = 0; subi < subn; subi++)
|
|
pr_info("%2d:%1d: %s\n", i, subi + 1,
|
|
t->subtest.get_desc(subi));
|
|
}
|
|
}
|
|
|
|
perf_test__list_shell(argc, argv, i);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int cmd_test(int argc, const char **argv)
|
|
{
|
|
const char *test_usage[] = {
|
|
"perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
|
|
NULL,
|
|
};
|
|
const char *skip = NULL;
|
|
const struct option test_options[] = {
|
|
OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
|
|
OPT_INCR('v', "verbose", &verbose,
|
|
"be more verbose (show symbol address, etc)"),
|
|
OPT_BOOLEAN('F', "dont-fork", &dont_fork,
|
|
"Do not fork for testcase"),
|
|
OPT_END()
|
|
};
|
|
const char * const test_subcommands[] = { "list", NULL };
|
|
struct intlist *skiplist = NULL;
|
|
int ret = hists__init();
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
argc = parse_options_subcommand(argc, argv, test_options, test_subcommands, test_usage, 0);
|
|
if (argc >= 1 && !strcmp(argv[0], "list"))
|
|
return perf_test__list(argc - 1, argv + 1);
|
|
|
|
symbol_conf.priv_size = sizeof(int);
|
|
symbol_conf.sort_by_name = true;
|
|
symbol_conf.try_vmlinux_path = true;
|
|
|
|
if (symbol__init(NULL) < 0)
|
|
return -1;
|
|
|
|
if (skip != NULL)
|
|
skiplist = intlist__new(skip);
|
|
/*
|
|
* Tests that create BPF maps, for instance, need more than the 64K
|
|
* default:
|
|
*/
|
|
rlimit__bump_memlock();
|
|
|
|
return __cmd_test(argc, argv, skiplist);
|
|
}
|