![Jiri Olsa](/assets/img/avatar_default.png)
Testing that perf properly closes opened dso objects and tries to reopen in case we run out of allowed file descriptors for dso data. Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jean Pihet <jean.pihet@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Reviewed by: David Ahern <dsahern@gmail.com> Link: http://lkml.kernel.org/r/1401892622-30848-14-git-send-email-jolsa@kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org>
308 lines
6.1 KiB
C
308 lines
6.1 KiB
C
/*
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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 <unistd.h>
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#include <string.h>
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#include "builtin.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 "parse-options.h"
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#include "symbol.h"
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static struct test {
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const char *desc;
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int (*func)(void);
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} 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 open syscall event",
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.func = test__open_syscall_event,
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},
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{
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.desc = "detect open syscall event on all cpus",
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.func = test__open_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 = "parse events tests",
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.func = test__parse_events,
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},
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#if defined(__x86_64__) || defined(__i386__)
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{
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.desc = "x86 rdpmc test",
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.func = test__rdpmc,
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},
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#endif
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{
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.desc = "Validate 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 = "Test perf pmu format parsing",
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.func = test__pmu,
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},
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{
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.desc = "Test dso data read",
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.func = test__dso_data,
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},
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{
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.desc = "Test 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 = "Test 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 check",
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.func = test__perf_evsel__roundtrip_name_test,
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},
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{
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.desc = "Check parsing of 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 = "Generate and check syscalls:sys_enter_open event fields",
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.func = test__syscall_open_tp_fields,
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},
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{
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.desc = "struct perf_event_attr setup",
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.func = test__attr,
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},
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{
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.desc = "Test matching and linking multiple hists",
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.func = test__hists_link,
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},
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{
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.desc = "Try 'use perf' in python, checking link problems",
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.func = test__python_use,
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},
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{
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.desc = "Test breakpoint overflow signal handler",
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.func = test__bp_signal,
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},
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{
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.desc = "Test breakpoint overflow sampling",
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.func = test__bp_signal_overflow,
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},
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{
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.desc = "Test number of exit event 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 = "Test software clock events have valid period values",
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.func = test__sw_clock_freq,
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},
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#if defined(__x86_64__) || defined(__i386__)
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{
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.desc = "Test converting perf time to TSC",
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.func = test__perf_time_to_tsc,
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},
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#endif
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{
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.desc = "Test object code reading",
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.func = test__code_reading,
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},
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{
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.desc = "Test sample parsing",
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.func = test__sample_parsing,
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},
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{
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.desc = "Test using 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 = "Test parsing 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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#if defined(__x86_64__) || defined(__i386__) || defined(__arm__)
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#ifdef HAVE_DWARF_UNWIND_SUPPORT
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{
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.desc = "Test dwarf unwind",
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.func = test__dwarf_unwind,
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},
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#endif
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#endif
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{
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.desc = "Test filtering hist entries",
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.func = test__hists_filter,
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},
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{
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.desc = "Test mmap thread lookup",
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.func = test__mmap_thread_lookup,
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},
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{
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.desc = "Test thread mg sharing",
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.func = test__thread_mg_share,
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},
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{
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.desc = "Test output sorting of hist entries",
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.func = test__hists_output,
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},
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{
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.desc = "Test cumulation of child hist entries",
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.func = test__hists_cumulate,
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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 bool perf_test__matches(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 (strstr(tests[curr].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)
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{
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int status, err = -1, child = fork();
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if (child < 0) {
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pr_err("failed to fork test: %s\n", strerror(errno));
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return -1;
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}
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if (!child) {
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pr_debug("test child forked, pid %d\n", getpid());
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err = test->func();
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exit(err);
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}
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wait(&status);
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if (WIFEXITED(status)) {
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err = 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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return err;
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}
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static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
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{
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int i = 0;
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int width = 0;
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while (tests[i].func) {
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int len = strlen(tests[i].desc);
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if (width < len)
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width = len;
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++i;
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}
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i = 0;
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while (tests[i].func) {
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int curr = i++, err;
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if (!perf_test__matches(curr, argc, argv))
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continue;
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pr_info("%2d: %-*s:", i, width, tests[curr].desc);
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if (intlist__find(skiplist, i)) {
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color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip (user override)\n");
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continue;
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}
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pr_debug("\n--- start ---\n");
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err = run_test(&tests[curr]);
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pr_debug("---- end ----\n%s:", tests[curr].desc);
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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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color_fprintf(stderr, PERF_COLOR_YELLOW, " Skip\n");
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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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}
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return 0;
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}
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static int perf_test__list(int argc, const char **argv)
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{
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int i = 0;
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while (tests[i].func) {
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int curr = i++;
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if (argc > 1 && !strstr(tests[curr].desc, argv[1]))
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continue;
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pr_info("%2d: %s\n", i, tests[curr].desc);
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}
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return 0;
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}
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int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused)
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{
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const char * const test_usage[] = {
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"perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",
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NULL,
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};
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const char *skip = NULL;
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const struct option test_options[] = {
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OPT_STRING('s', "skip", &skip, "tests", "tests to skip"),
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OPT_INCR('v', "verbose", &verbose,
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"be more verbose (show symbol address, etc)"),
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OPT_END()
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};
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struct intlist *skiplist = NULL;
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argc = parse_options(argc, argv, test_options, test_usage, 0);
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if (argc >= 1 && !strcmp(argv[0], "list"))
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return perf_test__list(argc, argv);
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symbol_conf.priv_size = sizeof(int);
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symbol_conf.sort_by_name = true;
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symbol_conf.try_vmlinux_path = true;
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if (symbol__init() < 0)
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return -1;
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if (skip != NULL)
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skiplist = intlist__new(skip);
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return __cmd_test(argc, argv, skiplist);
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}
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