forked from luck/tmp_suning_uos_patched
perf tests: Add a sample parsing test
Add a test that checks that sample parsing is correctly implemented. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1377591794-30553-12-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
Arnaldo Carvalho de Melo
parent
b1cf6f65aa
commit
045f8cd854
|
|
@ -439,6 +439,7 @@ PERFLIBS = $(LIB_FILE) $(LIBLK) $(LIBTRACEEVENT)
|
|||
ifneq ($(OUTPUT),)
|
||||
CFLAGS += -I$(OUTPUT)
|
||||
endif
|
||||
LIB_OBJS += $(OUTPUT)tests/sample-parsing.o
|
||||
|
||||
ifdef NO_LIBELF
|
||||
EXTLIBS := $(filter-out -lelf,$(EXTLIBS))
|
||||
|
|
|
|||
|
|
@ -103,6 +103,10 @@ static struct test {
|
|||
.desc = "Test object code reading",
|
||||
.func = test__code_reading,
|
||||
},
|
||||
{
|
||||
.desc = "Test sample parsing",
|
||||
.func = test__sample_parsing,
|
||||
},
|
||||
{
|
||||
.func = NULL,
|
||||
},
|
||||
|
|
|
|||
316
tools/perf/tests/sample-parsing.c
Normal file
316
tools/perf/tests/sample-parsing.c
Normal file
|
|
@ -0,0 +1,316 @@
|
|||
#include <stdbool.h>
|
||||
#include <inttypes.h>
|
||||
|
||||
#include "util.h"
|
||||
#include "event.h"
|
||||
#include "evsel.h"
|
||||
|
||||
#include "tests.h"
|
||||
|
||||
#define COMP(m) do { \
|
||||
if (s1->m != s2->m) { \
|
||||
pr_debug("Samples differ at '"#m"'\n"); \
|
||||
return false; \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
#define MCOMP(m) do { \
|
||||
if (memcmp(&s1->m, &s2->m, sizeof(s1->m))) { \
|
||||
pr_debug("Samples differ at '"#m"'\n"); \
|
||||
return false; \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
static bool samples_same(const struct perf_sample *s1,
|
||||
const struct perf_sample *s2, u64 type, u64 regs_user,
|
||||
u64 read_format)
|
||||
{
|
||||
size_t i;
|
||||
|
||||
if (type & PERF_SAMPLE_IDENTIFIER)
|
||||
COMP(id);
|
||||
|
||||
if (type & PERF_SAMPLE_IP)
|
||||
COMP(ip);
|
||||
|
||||
if (type & PERF_SAMPLE_TID) {
|
||||
COMP(pid);
|
||||
COMP(tid);
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_TIME)
|
||||
COMP(time);
|
||||
|
||||
if (type & PERF_SAMPLE_ADDR)
|
||||
COMP(addr);
|
||||
|
||||
if (type & PERF_SAMPLE_ID)
|
||||
COMP(id);
|
||||
|
||||
if (type & PERF_SAMPLE_STREAM_ID)
|
||||
COMP(stream_id);
|
||||
|
||||
if (type & PERF_SAMPLE_CPU)
|
||||
COMP(cpu);
|
||||
|
||||
if (type & PERF_SAMPLE_PERIOD)
|
||||
COMP(period);
|
||||
|
||||
if (type & PERF_SAMPLE_READ) {
|
||||
if (read_format & PERF_FORMAT_GROUP)
|
||||
COMP(read.group.nr);
|
||||
else
|
||||
COMP(read.one.value);
|
||||
if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
|
||||
COMP(read.time_enabled);
|
||||
if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
|
||||
COMP(read.time_running);
|
||||
/* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
|
||||
if (read_format & PERF_FORMAT_GROUP) {
|
||||
for (i = 0; i < s1->read.group.nr; i++)
|
||||
MCOMP(read.group.values[i]);
|
||||
} else {
|
||||
COMP(read.one.id);
|
||||
}
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_CALLCHAIN) {
|
||||
COMP(callchain->nr);
|
||||
for (i = 0; i < s1->callchain->nr; i++)
|
||||
COMP(callchain->ips[i]);
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_RAW) {
|
||||
COMP(raw_size);
|
||||
if (memcmp(s1->raw_data, s2->raw_data, s1->raw_size)) {
|
||||
pr_debug("Samples differ at 'raw_data'\n");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_BRANCH_STACK) {
|
||||
COMP(branch_stack->nr);
|
||||
for (i = 0; i < s1->branch_stack->nr; i++)
|
||||
MCOMP(branch_stack->entries[i]);
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_REGS_USER) {
|
||||
size_t sz = hweight_long(regs_user) * sizeof(u64);
|
||||
|
||||
COMP(user_regs.abi);
|
||||
if (s1->user_regs.abi &&
|
||||
(!s1->user_regs.regs || !s2->user_regs.regs ||
|
||||
memcmp(s1->user_regs.regs, s2->user_regs.regs, sz))) {
|
||||
pr_debug("Samples differ at 'user_regs'\n");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_STACK_USER) {
|
||||
COMP(user_stack.size);
|
||||
if (memcmp(s1->user_stack.data, s1->user_stack.data,
|
||||
s1->user_stack.size)) {
|
||||
pr_debug("Samples differ at 'user_stack'\n");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (type & PERF_SAMPLE_WEIGHT)
|
||||
COMP(weight);
|
||||
|
||||
if (type & PERF_SAMPLE_DATA_SRC)
|
||||
COMP(data_src);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static int do_test(u64 sample_type, u64 sample_regs_user, u64 read_format)
|
||||
{
|
||||
struct perf_evsel evsel = {
|
||||
.needs_swap = false,
|
||||
.attr = {
|
||||
.sample_type = sample_type,
|
||||
.sample_regs_user = sample_regs_user,
|
||||
.read_format = read_format,
|
||||
},
|
||||
};
|
||||
union perf_event *event;
|
||||
union {
|
||||
struct ip_callchain callchain;
|
||||
u64 data[64];
|
||||
} callchain = {
|
||||
/* 3 ips */
|
||||
.data = {3, 201, 202, 203},
|
||||
};
|
||||
union {
|
||||
struct branch_stack branch_stack;
|
||||
u64 data[64];
|
||||
} branch_stack = {
|
||||
/* 1 branch_entry */
|
||||
.data = {1, 211, 212, 213},
|
||||
};
|
||||
u64 user_regs[64];
|
||||
const u64 raw_data[] = {0x123456780a0b0c0dULL, 0x1102030405060708ULL};
|
||||
const u64 data[] = {0x2211443366558877ULL, 0, 0xaabbccddeeff4321ULL};
|
||||
struct perf_sample sample = {
|
||||
.ip = 101,
|
||||
.pid = 102,
|
||||
.tid = 103,
|
||||
.time = 104,
|
||||
.addr = 105,
|
||||
.id = 106,
|
||||
.stream_id = 107,
|
||||
.period = 108,
|
||||
.weight = 109,
|
||||
.cpu = 110,
|
||||
.raw_size = sizeof(raw_data),
|
||||
.data_src = 111,
|
||||
.raw_data = (void *)raw_data,
|
||||
.callchain = &callchain.callchain,
|
||||
.branch_stack = &branch_stack.branch_stack,
|
||||
.user_regs = {
|
||||
.abi = PERF_SAMPLE_REGS_ABI_64,
|
||||
.regs = user_regs,
|
||||
},
|
||||
.user_stack = {
|
||||
.size = sizeof(data),
|
||||
.data = (void *)data,
|
||||
},
|
||||
.read = {
|
||||
.time_enabled = 0x030a59d664fca7deULL,
|
||||
.time_running = 0x011b6ae553eb98edULL,
|
||||
},
|
||||
};
|
||||
struct sample_read_value values[] = {{1, 5}, {9, 3}, {2, 7}, {6, 4},};
|
||||
struct perf_sample sample_out;
|
||||
size_t i, sz, bufsz;
|
||||
int err, ret = -1;
|
||||
|
||||
for (i = 0; i < sizeof(user_regs); i++)
|
||||
*(i + (u8 *)user_regs) = i & 0xfe;
|
||||
|
||||
if (read_format & PERF_FORMAT_GROUP) {
|
||||
sample.read.group.nr = 4;
|
||||
sample.read.group.values = values;
|
||||
} else {
|
||||
sample.read.one.value = 0x08789faeb786aa87ULL;
|
||||
sample.read.one.id = 99;
|
||||
}
|
||||
|
||||
sz = perf_event__sample_event_size(&sample, sample_type,
|
||||
sample_regs_user, read_format);
|
||||
bufsz = sz + 4096; /* Add a bit for overrun checking */
|
||||
event = malloc(bufsz);
|
||||
if (!event) {
|
||||
pr_debug("malloc failed\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
memset(event, 0xff, bufsz);
|
||||
event->header.type = PERF_RECORD_SAMPLE;
|
||||
event->header.misc = 0;
|
||||
event->header.size = sz;
|
||||
|
||||
err = perf_event__synthesize_sample(event, sample_type,
|
||||
sample_regs_user, read_format,
|
||||
&sample, false);
|
||||
if (err) {
|
||||
pr_debug("%s failed for sample_type %#"PRIx64", error %d\n",
|
||||
"perf_event__synthesize_sample", sample_type, err);
|
||||
goto out_free;
|
||||
}
|
||||
|
||||
/* The data does not contain 0xff so we use that to check the size */
|
||||
for (i = bufsz; i > 0; i--) {
|
||||
if (*(i - 1 + (u8 *)event) != 0xff)
|
||||
break;
|
||||
}
|
||||
if (i != sz) {
|
||||
pr_debug("Event size mismatch: actual %zu vs expected %zu\n",
|
||||
i, sz);
|
||||
goto out_free;
|
||||
}
|
||||
|
||||
evsel.sample_size = __perf_evsel__sample_size(sample_type);
|
||||
|
||||
err = perf_evsel__parse_sample(&evsel, event, &sample_out);
|
||||
if (err) {
|
||||
pr_debug("%s failed for sample_type %#"PRIx64", error %d\n",
|
||||
"perf_evsel__parse_sample", sample_type, err);
|
||||
goto out_free;
|
||||
}
|
||||
|
||||
if (!samples_same(&sample, &sample_out, sample_type,
|
||||
sample_regs_user, read_format)) {
|
||||
pr_debug("parsing failed for sample_type %#"PRIx64"\n",
|
||||
sample_type);
|
||||
goto out_free;
|
||||
}
|
||||
|
||||
ret = 0;
|
||||
out_free:
|
||||
free(event);
|
||||
if (ret && read_format)
|
||||
pr_debug("read_format %#"PRIx64"\n", read_format);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
* test__sample_parsing - test sample parsing.
|
||||
*
|
||||
* This function implements a test that synthesizes a sample event, parses it
|
||||
* and then checks that the parsed sample matches the original sample. The test
|
||||
* checks sample format bits separately and together. If the test passes %0 is
|
||||
* returned, otherwise %-1 is returned.
|
||||
*/
|
||||
int test__sample_parsing(void)
|
||||
{
|
||||
const u64 rf[] = {4, 5, 6, 7, 12, 13, 14, 15};
|
||||
u64 sample_type;
|
||||
u64 sample_regs_user;
|
||||
size_t i;
|
||||
int err;
|
||||
|
||||
/*
|
||||
* Fail the test if it has not been updated when new sample format bits
|
||||
* were added.
|
||||
*/
|
||||
if (PERF_SAMPLE_MAX > PERF_SAMPLE_IDENTIFIER << 1) {
|
||||
pr_debug("sample format has changed - test needs updating\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Test each sample format bit separately */
|
||||
for (sample_type = 1; sample_type != PERF_SAMPLE_MAX;
|
||||
sample_type <<= 1) {
|
||||
/* Test read_format variations */
|
||||
if (sample_type == PERF_SAMPLE_READ) {
|
||||
for (i = 0; i < ARRAY_SIZE(rf); i++) {
|
||||
err = do_test(sample_type, 0, rf[i]);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
if (sample_type == PERF_SAMPLE_REGS_USER)
|
||||
sample_regs_user = 0x3fff;
|
||||
else
|
||||
sample_regs_user = 0;
|
||||
|
||||
err = do_test(sample_type, sample_regs_user, 0);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
/* Test all sample format bits together */
|
||||
sample_type = PERF_SAMPLE_MAX - 1;
|
||||
sample_regs_user = 0x3fff;
|
||||
for (i = 0; i < ARRAY_SIZE(rf); i++) {
|
||||
err = do_test(sample_type, sample_regs_user, rf[i]);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -37,5 +37,6 @@ 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);
|
||||
|
||||
#endif /* TESTS_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user