/* Tests */
int test__rdpmc(struct test *test __maybe_unused, int subtest);
-int test__perf_time_to_tsc(struct test *test __maybe_unused, int subtest);
int test__insn_x86(struct test *test __maybe_unused, int subtest);
int test__intel_pt_pkt_decoder(struct test *test, int subtest);
int test__bp_modify(struct test *test, int subtest);
perf-y += arch-tests.o
perf-y += rdpmc.o
-perf-y += perf-time-to-tsc.o
perf-$(CONFIG_AUXTRACE) += insn-x86.o intel-pt-pkt-decoder-test.o
perf-$(CONFIG_X86_64) += bp-modify.o
.desc = "x86 rdpmc",
.func = test__rdpmc,
},
- {
- .desc = "Convert perf time to TSC",
- .func = test__perf_time_to_tsc,
- },
#ifdef HAVE_DWARF_UNWIND_SUPPORT
{
.desc = "DWARF unwind",
+++ /dev/null
-// 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;
-}
perf-y += parse-metric.o
perf-y += pe-file-parsing.o
perf-y += expand-cgroup.o
+perf-y += perf-time-to-tsc.o
$(OUTPUT)tests/llvm-src-base.c: tests/bpf-script-example.c tests/Build
$(call rule_mkdir)
.desc = "Event expansion for cgroups",
.func = test__expand_cgroup_events,
},
+ {
+ .desc = "Convert perf time to TSC",
+ .func = test__perf_time_to_tsc,
+ },
{
.func = NULL,
},
--- /dev/null
+// 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 "mmap.h"
+#include "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;
+}
int test__parse_metric(struct test *test, int subtest);
int test__pe_file_parsing(struct test *test, int subtest);
int test__expand_cgroup_events(struct test *test, int subtest);
+int test__perf_time_to_tsc(struct test *test, int subtest);
bool test__bp_signal_is_supported(void);
bool test__bp_account_is_supported(void);
projects / linux-2.6-microblaze.git / commitdiff