![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
Some tests have sub-tests we want to run, so allow passing this. Wang tried to avoid having to touch all tests, but then, having the test.func in an anonymous union makes the build fail on older compilers, like the one in RHEL6, where: test a = { .func = foo, }; fails. To fix it leave the func pointer in the main structure and pass the subtest index to all tests, end result function is the same, but we have just one function pointer, not two, with and without the subtest index as an argument. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-5genj0ficwdmelpoqlds0u4y@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
347 lines
8 KiB
C
347 lines
8 KiB
C
#include <stdbool.h>
|
|
#include <linux/types.h>
|
|
|
|
#include "util.h"
|
|
#include "event.h"
|
|
#include "evsel.h"
|
|
#include "debug.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 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(s1->user_regs.mask) * sizeof(u64);
|
|
|
|
COMP(user_regs.mask);
|
|
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, s2->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);
|
|
|
|
if (type & PERF_SAMPLE_TRANSACTION)
|
|
COMP(transaction);
|
|
|
|
if (type & PERF_SAMPLE_REGS_INTR) {
|
|
size_t sz = hweight_long(s1->intr_regs.mask) * sizeof(u64);
|
|
|
|
COMP(intr_regs.mask);
|
|
COMP(intr_regs.abi);
|
|
if (s1->intr_regs.abi &&
|
|
(!s1->intr_regs.regs || !s2->intr_regs.regs ||
|
|
memcmp(s1->intr_regs.regs, s2->intr_regs.regs, sz))) {
|
|
pr_debug("Samples differ at 'intr_regs'\n");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static int do_test(u64 sample_type, u64 sample_regs, u64 read_format)
|
|
{
|
|
struct perf_evsel evsel = {
|
|
.needs_swap = false,
|
|
.attr = {
|
|
.sample_type = sample_type,
|
|
.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 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,
|
|
.transaction = 112,
|
|
.raw_data = (void *)raw_data,
|
|
.callchain = &callchain.callchain,
|
|
.branch_stack = &branch_stack.branch_stack,
|
|
.user_regs = {
|
|
.abi = PERF_SAMPLE_REGS_ABI_64,
|
|
.mask = sample_regs,
|
|
.regs = regs,
|
|
},
|
|
.user_stack = {
|
|
.size = sizeof(data),
|
|
.data = (void *)data,
|
|
},
|
|
.read = {
|
|
.time_enabled = 0x030a59d664fca7deULL,
|
|
.time_running = 0x011b6ae553eb98edULL,
|
|
},
|
|
.intr_regs = {
|
|
.abi = PERF_SAMPLE_REGS_ABI_64,
|
|
.mask = sample_regs,
|
|
.regs = regs,
|
|
},
|
|
};
|
|
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;
|
|
|
|
if (sample_type & PERF_SAMPLE_REGS_USER)
|
|
evsel.attr.sample_regs_user = sample_regs;
|
|
|
|
if (sample_type & PERF_SAMPLE_REGS_INTR)
|
|
evsel.attr.sample_regs_intr = sample_regs;
|
|
|
|
for (i = 0; i < sizeof(regs); i++)
|
|
*(i + (u8 *)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, 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, 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, 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(int subtest __maybe_unused)
|
|
{
|
|
const u64 rf[] = {4, 5, 6, 7, 12, 13, 14, 15};
|
|
u64 sample_type;
|
|
u64 sample_regs;
|
|
size_t i;
|
|
int err;
|
|
|
|
/*
|
|
* Fail the test if it has not been updated when new sample format bits
|
|
* were added. Please actually update the test rather than just change
|
|
* the condition below.
|
|
*/
|
|
if (PERF_SAMPLE_MAX > PERF_SAMPLE_REGS_INTR << 1) {
|
|
pr_debug("sample format has changed, some new PERF_SAMPLE_ bit was introduced - 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;
|
|
}
|
|
sample_regs = 0;
|
|
|
|
if (sample_type == PERF_SAMPLE_REGS_USER)
|
|
sample_regs = 0x3fff;
|
|
|
|
if (sample_type == PERF_SAMPLE_REGS_INTR)
|
|
sample_regs = 0xff0fff;
|
|
|
|
err = do_test(sample_type, sample_regs, 0);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
/* Test all sample format bits together */
|
|
sample_type = PERF_SAMPLE_MAX - 1;
|
|
sample_regs = 0x3fff; /* shared yb intr and user regs */
|
|
for (i = 0; i < ARRAY_SIZE(rf); i++) {
|
|
err = do_test(sample_type, sample_regs, rf[i]);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|