[PATCH 2/3] perf tests: Add arch tests

From: Matt Fleming
Date: Sat Sep 05 2015 - 15:02:58 EST

From: Matt Fleming <matt.fleming@xxxxxxxxx>

Tests that only make sense for some architectures currently live in
the same place as the generic tests. Move out the x86-specific tests
into tools/perf/arch/x86/tests and define an 'arch_tests' array, which
is the list of tests that only apply to the build architecture.

The main idea is to encourage developers to add arch tests to build
out perf's test coverage, without dumping everything in
tools/perf/tests.

We can also now begin to get rid of some of the #ifdef code that is
present in the generic perf tests.

Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Matt Fleming <matt.fleming@xxxxxxxxx>
---
tools/perf/arch/x86/Build | 2 +-
tools/perf/arch/x86/include/arch-tests.h | 18 +++
tools/perf/arch/x86/tests/Build | 8 +-
tools/perf/arch/x86/tests/arch-tests.c | 24 ++++
tools/perf/arch/x86/tests/dwarf-unwind.c | 1 +
tools/perf/arch/x86/tests/perf-time-to-tsc.c | 163 ++++++++++++++++++++++++
tools/perf/arch/x86/tests/rdpmc.c | 174 ++++++++++++++++++++++++++
tools/perf/tests/Build | 3 -
tools/perf/tests/builtin-test.c | 46 ++++---
tools/perf/tests/dwarf-unwind.c | 4 +
tools/perf/tests/perf-time-to-tsc.c | 162 ------------------------
tools/perf/tests/rdpmc.c | 177 ---------------------------
tools/perf/tests/tests.h | 9 +-
13 files changed, 418 insertions(+), 373 deletions(-)
create mode 100644 tools/perf/arch/x86/include/arch-tests.h
create mode 100644 tools/perf/arch/x86/tests/arch-tests.c
create mode 100644 tools/perf/arch/x86/tests/perf-time-to-tsc.c
create mode 100644 tools/perf/arch/x86/tests/rdpmc.c
delete mode 100644 tools/perf/tests/perf-time-to-tsc.c
delete mode 100644 tools/perf/tests/rdpmc.c

diff --git a/tools/perf/arch/x86/Build b/tools/perf/arch/x86/Build
index 41bf61da476a..db52fa22d3a1 100644
--- a/tools/perf/arch/x86/Build
+++ b/tools/perf/arch/x86/Build
@@ -1,2 +1,2 @@
libperf-y += util/
-libperf-$(CONFIG_DWARF_UNWIND) += tests/
+libperf-y += tests/
diff --git a/tools/perf/arch/x86/include/arch-tests.h b/tools/perf/arch/x86/include/arch-tests.h
new file mode 100644
index 000000000000..9e505c5f6947
--- /dev/null
+++ b/tools/perf/arch/x86/include/arch-tests.h
@@ -0,0 +1,18 @@
+#ifndef ARCH_TESTS_H
+#define ARCH_TESTS_H
+
+/* Tests */
+int test__rdpmc(void);
+int test__perf_time_to_tsc(void);
+int test__intel_cqm_count_nmi_context(void);
+
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
+struct thread;
+struct perf_sample;
+int test__arch_unwind_sample(struct perf_sample *sample,
+ struct thread *thread);
+#endif
+
+extern struct test arch_tests[];
+
+#endif
diff --git a/tools/perf/arch/x86/tests/Build b/tools/perf/arch/x86/tests/Build
index b30eff9bcc83..1381525dae06 100644
--- a/tools/perf/arch/x86/tests/Build
+++ b/tools/perf/arch/x86/tests/Build
@@ -1,2 +1,6 @@
-libperf-y += regs_load.o
-libperf-y += dwarf-unwind.o
+libperf-$(CONFIG_DWARF_UNWIND) += regs_load.o
+libperf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
+
+libperf-y += arch-tests.o
+libperf-y += rdpmc.o
+libperf-y += perf-time-to-tsc.o
diff --git a/tools/perf/arch/x86/tests/arch-tests.c b/tools/perf/arch/x86/tests/arch-tests.c
new file mode 100644
index 000000000000..0004fe48dc7e
--- /dev/null
+++ b/tools/perf/arch/x86/tests/arch-tests.c
@@ -0,0 +1,24 @@
+#include <string.h>
+#include "tests/tests.h"
+#include "arch-tests.h"
+
+struct test arch_tests[] = {
+ {
+ .desc = "x86 rdpmc test",
+ .func = test__rdpmc,
+ },
+ {
+ .desc = "Test converting perf time to TSC",
+ .func = test__perf_time_to_tsc,
+ },
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
+ {
+ .desc = "Test dwarf unwind",
+ .func = test__dwarf_unwind,
+ },
+#endif
+ {
+ .func = NULL,
+ },
+
+};
diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c
index d8bbf7ad1681..7f209ce827bf 100644
--- a/tools/perf/arch/x86/tests/dwarf-unwind.c
+++ b/tools/perf/arch/x86/tests/dwarf-unwind.c
@@ -5,6 +5,7 @@
#include "event.h"
#include "debug.h"
#include "tests/tests.h"
+#include "arch-tests.h"

#define STACK_SIZE 8192

diff --git a/tools/perf/arch/x86/tests/perf-time-to-tsc.c b/tools/perf/arch/x86/tests/perf-time-to-tsc.c
new file mode 100644
index 000000000000..5880768d1e5c
--- /dev/null
+++ b/tools/perf/arch/x86/tests/perf-time-to-tsc.c
@@ -0,0 +1,163 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <linux/types.h>
+#include <sys/prctl.h>
+
+#include "parse-events.h"
+#include "evlist.h"
+#include "evsel.h"
+#include "thread_map.h"
+#include "cpumap.h"
+#include "tsc.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(void)
+{
+ struct record_opts opts = {
+ .mmap_pages = UINT_MAX,
+ .user_freq = UINT_MAX,
+ .user_interval = ULLONG_MAX,
+ .freq = 4000,
+ .target = {
+ .uses_mmap = true,
+ },
+ .sample_time = true,
+ };
+ struct thread_map *threads = NULL;
+ struct cpu_map *cpus = NULL;
+ struct perf_evlist *evlist = NULL;
+ struct perf_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;
+
+ threads = thread_map__new(-1, getpid(), UINT_MAX);
+ CHECK_NOT_NULL__(threads);
+
+ cpus = cpu_map__new(NULL);
+ CHECK_NOT_NULL__(cpus);
+
+ evlist = perf_evlist__new();
+ CHECK_NOT_NULL__(evlist);
+
+ perf_evlist__set_maps(evlist, cpus, threads);
+
+ CHECK__(parse_events(evlist, "cycles:u", NULL));
+
+ perf_evlist__config(evlist, &opts);
+
+ evsel = perf_evlist__first(evlist);
+
+ evsel->attr.comm = 1;
+ evsel->attr.disabled = 1;
+ evsel->attr.enable_on_exec = 0;
+
+ CHECK__(perf_evlist__open(evlist));
+
+ CHECK__(perf_evlist__mmap(evlist, UINT_MAX, false));
+
+ pc = evlist->mmap[0].base;
+ ret = perf_read_tsc_conversion(pc, &tc);
+ if (ret) {
+ if (ret == -EOPNOTSUPP) {
+ fprintf(stderr, " (not supported)");
+ return 0;
+ }
+ goto out_err;
+ }
+
+ perf_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));
+
+ perf_evlist__disable(evlist);
+
+ for (i = 0; i < evlist->nr_mmaps; i++) {
+ while ((event = perf_evlist__mmap_read(evlist, i)) != 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__(perf_evsel__parse_sample(evsel, event,
+ &sample));
+ comm1_time = sample.time;
+ }
+ if (strcmp(event->comm.comm, comm2) == 0) {
+ CHECK__(perf_evsel__parse_sample(evsel, event,
+ &sample));
+ comm2_time = sample.time;
+ }
+next_event:
+ perf_evlist__mmap_consume(evlist, i);
+ }
+ }
+
+ 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:
+ if (evlist) {
+ perf_evlist__disable(evlist);
+ perf_evlist__delete(evlist);
+ }
+
+ return err;
+}
diff --git a/tools/perf/arch/x86/tests/rdpmc.c b/tools/perf/arch/x86/tests/rdpmc.c
new file mode 100644
index 000000000000..e7688214c7cf
--- /dev/null
+++ b/tools/perf/arch/x86/tests/rdpmc.c
@@ -0,0 +1,174 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <sys/mman.h>
+#include <linux/types.h>
+#include "perf.h"
+#include "debug.h"
+#include "tests/tests.h"
+#include "cloexec.h"
+#include "arch-tests.h"
+
+static u64 rdpmc(unsigned int counter)
+{
+ unsigned int low, high;
+
+ asm volatile("rdpmc" : "=a" (low), "=d" (high) : "c" (counter));
+
+ return low | ((u64)high) << 32;
+}
+
+static u64 rdtsc(void)
+{
+ unsigned int low, high;
+
+ asm volatile("rdtsc" : "=a" (low), "=d" (high));
+
+ return low | ((u64)high) << 32;
+}
+
+static u64 mmap_read_self(void *addr)
+{
+ struct perf_event_mmap_page *pc = addr;
+ u32 seq, idx, time_mult = 0, time_shift = 0;
+ u64 count, cyc = 0, time_offset = 0, enabled, running, delta;
+
+ do {
+ seq = pc->lock;
+ barrier();
+
+ enabled = pc->time_enabled;
+ running = pc->time_running;
+
+ if (enabled != running) {
+ cyc = rdtsc();
+ time_mult = pc->time_mult;
+ time_shift = pc->time_shift;
+ time_offset = pc->time_offset;
+ }
+
+ idx = pc->index;
+ count = pc->offset;
+ if (idx)
+ count += rdpmc(idx - 1);
+
+ barrier();
+ } while (pc->lock != seq);
+
+ if (enabled != running) {
+ u64 quot, rem;
+
+ quot = (cyc >> time_shift);
+ rem = cyc & ((1 << time_shift) - 1);
+ delta = time_offset + quot * time_mult +
+ ((rem * time_mult) >> time_shift);
+
+ enabled += delta;
+ if (idx)
+ running += delta;
+
+ quot = count / running;
+ rem = count % running;
+ count = quot * enabled + (rem * enabled) / running;
+ }
+
+ return count;
+}
+
+/*
+ * If the RDPMC instruction faults then signal this back to the test parent task:
+ */
+static void segfault_handler(int sig __maybe_unused,
+ siginfo_t *info __maybe_unused,
+ void *uc __maybe_unused)
+{
+ exit(-1);
+}
+
+static int __test__rdpmc(void)
+{
+ volatile int tmp = 0;
+ u64 i, loops = 1000;
+ int n;
+ int fd;
+ void *addr;
+ struct perf_event_attr attr = {
+ .type = PERF_TYPE_HARDWARE,
+ .config = PERF_COUNT_HW_INSTRUCTIONS,
+ .exclude_kernel = 1,
+ };
+ u64 delta_sum = 0;
+ struct sigaction sa;
+ char sbuf[STRERR_BUFSIZE];
+
+ sigfillset(&sa.sa_mask);
+ sa.sa_sigaction = segfault_handler;
+ sigaction(SIGSEGV, &sa, NULL);
+
+ fd = sys_perf_event_open(&attr, 0, -1, -1,
+ perf_event_open_cloexec_flag());
+ if (fd < 0) {
+ pr_err("Error: sys_perf_event_open() syscall returned "
+ "with %d (%s)\n", fd,
+ strerror_r(errno, sbuf, sizeof(sbuf)));
+ return -1;
+ }
+
+ addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0);
+ if (addr == (void *)(-1)) {
+ pr_err("Error: mmap() syscall returned with (%s)\n",
+ strerror_r(errno, sbuf, sizeof(sbuf)));
+ goto out_close;
+ }
+
+ for (n = 0; n < 6; n++) {
+ u64 stamp, now, delta;
+
+ stamp = mmap_read_self(addr);
+
+ for (i = 0; i < loops; i++)
+ tmp++;
+
+ now = mmap_read_self(addr);
+ loops *= 10;
+
+ delta = now - stamp;
+ pr_debug("%14d: %14Lu\n", n, (long long)delta);
+
+ delta_sum += delta;
+ }
+
+ munmap(addr, page_size);
+ pr_debug(" ");
+out_close:
+ close(fd);
+
+ if (!delta_sum)
+ return -1;
+
+ return 0;
+}
+
+int test__rdpmc(void)
+{
+ int status = 0;
+ int wret = 0;
+ int ret;
+ int pid;
+
+ pid = fork();
+ if (pid < 0)
+ return -1;
+
+ if (!pid) {
+ ret = __test__rdpmc();
+
+ exit(ret);
+ }
+
+ wret = waitpid(pid, &status, 0);
+ if (wret < 0 || status)
+ return -1;
+
+ return 0;
+}
diff --git a/tools/perf/tests/Build b/tools/perf/tests/Build
index c1518bdd0f1b..fa41e4f265fe 100644
--- a/tools/perf/tests/Build
+++ b/tools/perf/tests/Build
@@ -8,7 +8,6 @@ perf-y += openat-syscall-all-cpus.o
perf-y += openat-syscall-tp-fields.o
perf-y += mmap-basic.o
perf-y += perf-record.o
-perf-y += rdpmc.o
perf-y += evsel-roundtrip-name.o
perf-y += evsel-tp-sched.o
perf-y += fdarray.o
@@ -34,8 +33,6 @@ perf-y += kmod-path.o
perf-y += thread-map.o
perf-y += llvm.o

-perf-$(CONFIG_X86) += perf-time-to-tsc.o
-
ifeq ($(ARCH),$(filter $(ARCH),x86 arm arm64))
perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
endif
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 8cf0601d1662..a1b2265eaf55 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -14,10 +14,17 @@
#include "parse-options.h"
#include "symbol.h"

-static struct test {
- const char *desc;
- int (*func)(void);
-} tests[] = {
+#if defined(__x86_64__) || defined(__i386__)
+#include "arch-tests.h"
+#else
+static struct test arch_tests[] = {
+ {
+ .func = NULL,
+ },
+};
+#endif
+
+static struct test generic_tests[] = {
{
.desc = "vmlinux symtab matches kallsyms",
.func = test__vmlinux_matches_kallsyms,
@@ -38,12 +45,6 @@ static struct test {
.desc = "parse events tests",
.func = test__parse_events,
},
-#if defined(__x86_64__) || defined(__i386__)
- {
- .desc = "x86 rdpmc test",
- .func = test__rdpmc,
- },
-#endif
{
.desc = "Validate PERF_RECORD_* events & perf_sample fields",
.func = test__PERF_RECORD,
@@ -104,12 +105,6 @@ static struct test {
.desc = "Test software clock events have valid period values",
.func = test__sw_clock_freq,
},
-#if defined(__x86_64__) || defined(__i386__)
- {
- .desc = "Test converting perf time to TSC",
- .func = test__perf_time_to_tsc,
- },
-#endif
{
.desc = "Test object code reading",
.func = test__code_reading,
@@ -126,14 +121,6 @@ static struct test {
.desc = "Test parsing with no sample_id_all bit set",
.func = test__parse_no_sample_id_all,
},
-#if defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__)
-#ifdef HAVE_DWARF_UNWIND_SUPPORT
- {
- .desc = "Test dwarf unwind",
- .func = test__dwarf_unwind,
- },
-#endif
-#endif
{
.desc = "Test filtering hist entries",
.func = test__hists_filter,
@@ -183,6 +170,11 @@ static struct test {
},
};

+static struct test *tests[] = {
+ generic_tests,
+ arch_tests,
+};
+
static bool perf_test__matches(struct test *test, int curr, int argc, const char *argv[])
{
int i;
@@ -237,7 +229,11 @@ static int run_test(struct test *test)
return err;
}

-#define for_each_test(t) for (t = &tests[0]; t->func; t++)
+static unsigned int ___j; /* This is obviously not thread-safe */
+
+#define for_each_test(t) \
+ for (___j = 0; ___j < ARRAY_SIZE(tests); ___j++) \
+ for (t = &tests[___j][0]; t->func; t++)

static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
{
diff --git a/tools/perf/tests/dwarf-unwind.c b/tools/perf/tests/dwarf-unwind.c
index 40b36c462427..07221793a3ac 100644
--- a/tools/perf/tests/dwarf-unwind.c
+++ b/tools/perf/tests/dwarf-unwind.c
@@ -11,6 +11,10 @@
#include "thread.h"
#include "callchain.h"

+#if defined (__x86_64__) || defined (__i386__)
+#include "arch-tests.h"
+#endif
+
/* For bsearch. We try to unwind functions in shared object. */
#include <stdlib.h>

diff --git a/tools/perf/tests/perf-time-to-tsc.c b/tools/perf/tests/perf-time-to-tsc.c
deleted file mode 100644
index 5f49484f1abc..000000000000
--- a/tools/perf/tests/perf-time-to-tsc.c
+++ /dev/null
@@ -1,162 +0,0 @@
-#include <stdio.h>
-#include <unistd.h>
-#include <linux/types.h>
-#include <sys/prctl.h>
-
-#include "parse-events.h"
-#include "evlist.h"
-#include "evsel.h"
-#include "thread_map.h"
-#include "cpumap.h"
-#include "tsc.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(void)
-{
- struct record_opts opts = {
- .mmap_pages = UINT_MAX,
- .user_freq = UINT_MAX,
- .user_interval = ULLONG_MAX,
- .freq = 4000,
- .target = {
- .uses_mmap = true,
- },
- .sample_time = true,
- };
- struct thread_map *threads = NULL;
- struct cpu_map *cpus = NULL;
- struct perf_evlist *evlist = NULL;
- struct perf_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;
-
- threads = thread_map__new(-1, getpid(), UINT_MAX);
- CHECK_NOT_NULL__(threads);
-
- cpus = cpu_map__new(NULL);
- CHECK_NOT_NULL__(cpus);
-
- evlist = perf_evlist__new();
- CHECK_NOT_NULL__(evlist);
-
- perf_evlist__set_maps(evlist, cpus, threads);
-
- CHECK__(parse_events(evlist, "cycles:u", NULL));
-
- perf_evlist__config(evlist, &opts);
-
- evsel = perf_evlist__first(evlist);
-
- evsel->attr.comm = 1;
- evsel->attr.disabled = 1;
- evsel->attr.enable_on_exec = 0;
-
- CHECK__(perf_evlist__open(evlist));
-
- CHECK__(perf_evlist__mmap(evlist, UINT_MAX, false));
-
- pc = evlist->mmap[0].base;
- ret = perf_read_tsc_conversion(pc, &tc);
- if (ret) {
- if (ret == -EOPNOTSUPP) {
- fprintf(stderr, " (not supported)");
- return 0;
- }
- goto out_err;
- }
-
- perf_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));
-
- perf_evlist__disable(evlist);
-
- for (i = 0; i < evlist->nr_mmaps; i++) {
- while ((event = perf_evlist__mmap_read(evlist, i)) != 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__(perf_evsel__parse_sample(evsel, event,
- &sample));
- comm1_time = sample.time;
- }
- if (strcmp(event->comm.comm, comm2) == 0) {
- CHECK__(perf_evsel__parse_sample(evsel, event,
- &sample));
- comm2_time = sample.time;
- }
-next_event:
- perf_evlist__mmap_consume(evlist, i);
- }
- }
-
- 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:
- if (evlist) {
- perf_evlist__disable(evlist);
- perf_evlist__delete(evlist);
- }
-
- return err;
-}
diff --git a/tools/perf/tests/rdpmc.c b/tools/perf/tests/rdpmc.c
deleted file mode 100644
index d31f2c4d9f64..000000000000
--- a/tools/perf/tests/rdpmc.c
+++ /dev/null
@@ -1,177 +0,0 @@
-#include <unistd.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <sys/mman.h>
-#include <linux/types.h>
-#include "perf.h"
-#include "debug.h"
-#include "tests.h"
-#include "cloexec.h"
-
-#if defined(__x86_64__) || defined(__i386__)
-
-static u64 rdpmc(unsigned int counter)
-{
- unsigned int low, high;
-
- asm volatile("rdpmc" : "=a" (low), "=d" (high) : "c" (counter));
-
- return low | ((u64)high) << 32;
-}
-
-static u64 rdtsc(void)
-{
- unsigned int low, high;
-
- asm volatile("rdtsc" : "=a" (low), "=d" (high));
-
- return low | ((u64)high) << 32;
-}
-
-static u64 mmap_read_self(void *addr)
-{
- struct perf_event_mmap_page *pc = addr;
- u32 seq, idx, time_mult = 0, time_shift = 0;
- u64 count, cyc = 0, time_offset = 0, enabled, running, delta;
-
- do {
- seq = pc->lock;
- barrier();
-
- enabled = pc->time_enabled;
- running = pc->time_running;
-
- if (enabled != running) {
- cyc = rdtsc();
- time_mult = pc->time_mult;
- time_shift = pc->time_shift;
- time_offset = pc->time_offset;
- }
-
- idx = pc->index;
- count = pc->offset;
- if (idx)
- count += rdpmc(idx - 1);
-
- barrier();
- } while (pc->lock != seq);
-
- if (enabled != running) {
- u64 quot, rem;
-
- quot = (cyc >> time_shift);
- rem = cyc & ((1 << time_shift) - 1);
- delta = time_offset + quot * time_mult +
- ((rem * time_mult) >> time_shift);
-
- enabled += delta;
- if (idx)
- running += delta;
-
- quot = count / running;
- rem = count % running;
- count = quot * enabled + (rem * enabled) / running;
- }
-
- return count;
-}
-
-/*
- * If the RDPMC instruction faults then signal this back to the test parent task:
- */
-static void segfault_handler(int sig __maybe_unused,
- siginfo_t *info __maybe_unused,
- void *uc __maybe_unused)
-{
- exit(-1);
-}
-
-static int __test__rdpmc(void)
-{
- volatile int tmp = 0;
- u64 i, loops = 1000;
- int n;
- int fd;
- void *addr;
- struct perf_event_attr attr = {
- .type = PERF_TYPE_HARDWARE,
- .config = PERF_COUNT_HW_INSTRUCTIONS,
- .exclude_kernel = 1,
- };
- u64 delta_sum = 0;
- struct sigaction sa;
- char sbuf[STRERR_BUFSIZE];
-
- sigfillset(&sa.sa_mask);
- sa.sa_sigaction = segfault_handler;
- sigaction(SIGSEGV, &sa, NULL);
-
- fd = sys_perf_event_open(&attr, 0, -1, -1,
- perf_event_open_cloexec_flag());
- if (fd < 0) {
- pr_err("Error: sys_perf_event_open() syscall returned "
- "with %d (%s)\n", fd,
- strerror_r(errno, sbuf, sizeof(sbuf)));
- return -1;
- }
-
- addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0);
- if (addr == (void *)(-1)) {
- pr_err("Error: mmap() syscall returned with (%s)\n",
- strerror_r(errno, sbuf, sizeof(sbuf)));
- goto out_close;
- }
-
- for (n = 0; n < 6; n++) {
- u64 stamp, now, delta;
-
- stamp = mmap_read_self(addr);
-
- for (i = 0; i < loops; i++)
- tmp++;
-
- now = mmap_read_self(addr);
- loops *= 10;
-
- delta = now - stamp;
- pr_debug("%14d: %14Lu\n", n, (long long)delta);
-
- delta_sum += delta;
- }
-
- munmap(addr, page_size);
- pr_debug(" ");
-out_close:
- close(fd);
-
- if (!delta_sum)
- return -1;
-
- return 0;
-}
-
-int test__rdpmc(void)
-{
- int status = 0;
- int wret = 0;
- int ret;
- int pid;
-
- pid = fork();
- if (pid < 0)
- return -1;
-
- if (!pid) {
- ret = __test__rdpmc();
-
- exit(ret);
- }
-
- wret = waitpid(pid, &status, 0);
- if (wret < 0 || status)
- return -1;
-
- return 0;
-}
-
-#endif
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index bf113a247987..cad677d202bb 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -24,13 +24,17 @@ enum {
TEST_SKIP = -2,
};

+struct test {
+ const char *desc;
+ int (*func)(void);
+};
+
/* Tests */
int test__vmlinux_matches_kallsyms(void);
int test__openat_syscall_event(void);
int test__openat_syscall_event_on_all_cpus(void);
int test__basic_mmap(void);
int test__PERF_RECORD(void);
-int test__rdpmc(void);
int test__perf_evsel__roundtrip_name_test(void);
int test__perf_evsel__tp_sched_test(void);
int test__syscall_openat_tp_fields(void);
@@ -46,7 +50,6 @@ int test__bp_signal(void);
int test__bp_signal_overflow(void);
int test__task_exit(void);
int test__sw_clock_freq(void);
-int test__perf_time_to_tsc(void);
int test__code_reading(void);
int test__sample_parsing(void);
int test__keep_tracking(void);
@@ -64,7 +67,7 @@ int test__kmod_path__parse(void);
int test__thread_map(void);
int test__llvm(void);

-#if defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__)
+#if defined(__arm__) || defined(__aarch64__)
#ifdef HAVE_DWARF_UNWIND_SUPPORT
struct thread;
struct perf_sample;
--
2.1.0

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