diff options
Diffstat (limited to 'tools/perf/arch/x86/tests/perf-time-to-tsc.c')
-rw-r--r-- | tools/perf/arch/x86/tests/perf-time-to-tsc.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/tools/perf/arch/x86/tests/perf-time-to-tsc.c b/tools/perf/arch/x86/tests/perf-time-to-tsc.c deleted file mode 100644 index 026d32ed078e..000000000000 --- a/tools/perf/arch/x86/tests/perf-time-to-tsc.c +++ /dev/null @@ -1,173 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <errno.h> -#include <inttypes.h> -#include <limits.h> -#include <stdbool.h> -#include <stdio.h> -#include <unistd.h> -#include <linux/types.h> -#include <sys/prctl.h> -#include <perf/cpumap.h> -#include <perf/evlist.h> -#include <perf/mmap.h> - -#include "debug.h" -#include "parse-events.h" -#include "evlist.h" -#include "evsel.h" -#include "thread_map.h" -#include "record.h" -#include "tsc.h" -#include "util/mmap.h" -#include "tests/tests.h" - -#include "arch-tests.h" - -#define CHECK__(x) { \ - while ((x) < 0) { \ - pr_debug(#x " failed!\n"); \ - goto out_err; \ - } \ -} - -#define CHECK_NOT_NULL__(x) { \ - while ((x) == NULL) { \ - pr_debug(#x " failed!\n"); \ - goto out_err; \ - } \ -} - -/** - * test__perf_time_to_tsc - test converting perf time to TSC. - * - * This function implements a test that checks that the conversion of perf time - * to and from TSC is consistent with the order of events. If the test passes - * %0 is returned, otherwise %-1 is returned. If TSC conversion is not - * supported then then the test passes but " (not supported)" is printed. - */ -int test__perf_time_to_tsc(struct test *test __maybe_unused, int subtest __maybe_unused) -{ - struct record_opts opts = { - .mmap_pages = UINT_MAX, - .user_freq = UINT_MAX, - .user_interval = ULLONG_MAX, - .target = { - .uses_mmap = true, - }, - .sample_time = true, - }; - struct perf_thread_map *threads = NULL; - struct perf_cpu_map *cpus = NULL; - struct evlist *evlist = NULL; - struct evsel *evsel = NULL; - int err = -1, ret, i; - const char *comm1, *comm2; - struct perf_tsc_conversion tc; - struct perf_event_mmap_page *pc; - union perf_event *event; - u64 test_tsc, comm1_tsc, comm2_tsc; - u64 test_time, comm1_time = 0, comm2_time = 0; - struct mmap *md; - - threads = thread_map__new(-1, getpid(), UINT_MAX); - CHECK_NOT_NULL__(threads); - - cpus = perf_cpu_map__new(NULL); - CHECK_NOT_NULL__(cpus); - - evlist = evlist__new(); - CHECK_NOT_NULL__(evlist); - - perf_evlist__set_maps(&evlist->core, cpus, threads); - - CHECK__(parse_events(evlist, "cycles:u", NULL)); - - perf_evlist__config(evlist, &opts, NULL); - - evsel = evlist__first(evlist); - - evsel->core.attr.comm = 1; - evsel->core.attr.disabled = 1; - evsel->core.attr.enable_on_exec = 0; - - CHECK__(evlist__open(evlist)); - - CHECK__(evlist__mmap(evlist, UINT_MAX)); - - pc = evlist->mmap[0].core.base; - ret = perf_read_tsc_conversion(pc, &tc); - if (ret) { - if (ret == -EOPNOTSUPP) { - fprintf(stderr, " (not supported)"); - return 0; - } - goto out_err; - } - - evlist__enable(evlist); - - comm1 = "Test COMM 1"; - CHECK__(prctl(PR_SET_NAME, (unsigned long)comm1, 0, 0, 0)); - - test_tsc = rdtsc(); - - comm2 = "Test COMM 2"; - CHECK__(prctl(PR_SET_NAME, (unsigned long)comm2, 0, 0, 0)); - - evlist__disable(evlist); - - for (i = 0; i < evlist->core.nr_mmaps; i++) { - md = &evlist->mmap[i]; - if (perf_mmap__read_init(&md->core) < 0) - continue; - - while ((event = perf_mmap__read_event(&md->core)) != NULL) { - struct perf_sample sample; - - if (event->header.type != PERF_RECORD_COMM || - (pid_t)event->comm.pid != getpid() || - (pid_t)event->comm.tid != getpid()) - goto next_event; - - if (strcmp(event->comm.comm, comm1) == 0) { - CHECK__(evsel__parse_sample(evsel, event, &sample)); - comm1_time = sample.time; - } - if (strcmp(event->comm.comm, comm2) == 0) { - CHECK__(evsel__parse_sample(evsel, event, &sample)); - comm2_time = sample.time; - } -next_event: - perf_mmap__consume(&md->core); - } - perf_mmap__read_done(&md->core); - } - - if (!comm1_time || !comm2_time) - goto out_err; - - test_time = tsc_to_perf_time(test_tsc, &tc); - comm1_tsc = perf_time_to_tsc(comm1_time, &tc); - comm2_tsc = perf_time_to_tsc(comm2_time, &tc); - - pr_debug("1st event perf time %"PRIu64" tsc %"PRIu64"\n", - comm1_time, comm1_tsc); - pr_debug("rdtsc time %"PRIu64" tsc %"PRIu64"\n", - test_time, test_tsc); - pr_debug("2nd event perf time %"PRIu64" tsc %"PRIu64"\n", - comm2_time, comm2_tsc); - - if (test_time <= comm1_time || - test_time >= comm2_time) - goto out_err; - - if (test_tsc <= comm1_tsc || - test_tsc >= comm2_tsc) - goto out_err; - - err = 0; - -out_err: - evlist__delete(evlist); - return err; -} |