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perf test: Add dso data caching tests

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Adding automated test for DSO data reading. Testing raw/cached reads
from different file/cache locations.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Arun Sharma <asharma@fb.com>
Cc: Benjamin Redelings <benjamin.redelings@nescent.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/r/1342959280-5361-18-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2012-07-22 14:14:40 +02:00 committed by Arnaldo Carvalho de Melo
parent 4dff624ae0
commit f7add55653
4 changed files with 159 additions and 0 deletions
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1
tools/perf/Makefile
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@ -354,6 +354,7 @@ LIB_OBJS += $(OUTPUT)util/usage.o
LIB_OBJS += $(OUTPUT)util/wrapper.o
LIB_OBJS += $(OUTPUT)util/sigchain.o
LIB_OBJS += $(OUTPUT)util/symbol.o
LIB_OBJS += $(OUTPUT)util/dso-test-data.o
LIB_OBJS += $(OUTPUT)util/color.o
LIB_OBJS += $(OUTPUT)util/pager.o
LIB_OBJS += $(OUTPUT)util/header.o

4
tools/perf/builtin-test.c
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@ -1141,6 +1141,10 @@ static struct test {
.desc = "Test perf pmu format parsing",
.func = test__perf_pmu,
},
{
.desc = "Test dso data interface",
.func = dso__test_data,
},
{
.func = NULL,
},

153
tools/perf/util/dso-test-data.c Normal file
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@ -0,0 +1,153 @@
#include "util.h"
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include "symbol.h"
#define TEST_ASSERT_VAL(text, cond) \
do { \
if (!(cond)) { \
pr_debug("FAILED %s:%d %s\n", __FILE__, __LINE__, text); \
return -1; \
} \
} while (0)
static char *test_file(int size)
{
static char buf_templ[] = "/tmp/test-XXXXXX";
char *templ = buf_templ;
int fd, i;
unsigned char *buf;
fd = mkostemp(templ, O_CREAT|O_WRONLY|O_TRUNC);
buf = malloc(size);
if (!buf) {
close(fd);
return NULL;
}
for (i = 0; i < size; i++)
buf[i] = (unsigned char) ((int) i % 10);
if (size != write(fd, buf, size))
templ = NULL;
close(fd);
return templ;
}
#define TEST_FILE_SIZE (DSO__DATA_CACHE_SIZE * 20)
struct test_data_offset {
off_t offset;
u8 data[10];
int size;
};
struct test_data_offset offsets[] = {
/* Fill first cache page. */
{
.offset = 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Read first cache page. */
{
.offset = 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Fill cache boundary pages. */
{
.offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Read cache boundary pages. */
{
.offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Fill final cache page. */
{
.offset = TEST_FILE_SIZE - 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Read final cache page. */
{
.offset = TEST_FILE_SIZE - 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Read final cache page. */
{
.offset = TEST_FILE_SIZE - 3,
.data = { 7, 8, 9, 0, 0, 0, 0, 0, 0, 0 },
.size = 3,
},
};
int dso__test_data(void)
{
struct machine machine;
struct dso *dso;
char *file = test_file(TEST_FILE_SIZE);
size_t i;
TEST_ASSERT_VAL("No test file", file);
memset(&machine, 0, sizeof(machine));
dso = dso__new((const char *)file);
/* Basic 10 bytes tests. */
for (i = 0; i < ARRAY_SIZE(offsets); i++) {
struct test_data_offset *data = &offsets[i];
ssize_t size;
u8 buf[10];
memset(buf, 0, 10);
size = dso__data_read_offset(dso, &machine, data->offset,
buf, 10);
TEST_ASSERT_VAL("Wrong size", size == data->size);
TEST_ASSERT_VAL("Wrong data", !memcmp(buf, data->data, 10));
}
/* Read cross multiple cache pages. */
{
ssize_t size;
int c;
u8 *buf;
buf = malloc(TEST_FILE_SIZE);
TEST_ASSERT_VAL("ENOMEM\n", buf);
/* First iteration to fill caches, second one to read them. */
for (c = 0; c < 2; c++) {
memset(buf, 0, TEST_FILE_SIZE);
size = dso__data_read_offset(dso, &machine, 10,
buf, TEST_FILE_SIZE);
TEST_ASSERT_VAL("Wrong size",
size == (TEST_FILE_SIZE - 10));
for (i = 0; i < (size_t)size; i++)
TEST_ASSERT_VAL("Wrong data",
buf[i] == (i % 10));
}
free(buf);
}
dso__delete(dso);
unlink(file);
return 0;
}

1
tools/perf/util/symbol.h
View File

@ -325,4 +325,5 @@ ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,
ssize_t dso__data_read_addr(struct dso *dso, struct map *map,
struct machine *machine, u64 addr,
u8 *data, ssize_t size);
int dso__test_data(void);
#endif /* __PERF_SYMBOL */