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perf test: Add dso data caching tests
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>
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4 changed files with 159 additions and 0 deletions
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@ -354,6 +354,7 @@ LIB_OBJS += $(OUTPUT)util/usage.o
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LIB_OBJS += $(OUTPUT)util/wrapper.o
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LIB_OBJS += $(OUTPUT)util/wrapper.o
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LIB_OBJS += $(OUTPUT)util/sigchain.o
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LIB_OBJS += $(OUTPUT)util/sigchain.o
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LIB_OBJS += $(OUTPUT)util/symbol.o
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LIB_OBJS += $(OUTPUT)util/symbol.o
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LIB_OBJS += $(OUTPUT)util/dso-test-data.o
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LIB_OBJS += $(OUTPUT)util/color.o
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LIB_OBJS += $(OUTPUT)util/color.o
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LIB_OBJS += $(OUTPUT)util/pager.o
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LIB_OBJS += $(OUTPUT)util/pager.o
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LIB_OBJS += $(OUTPUT)util/header.o
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LIB_OBJS += $(OUTPUT)util/header.o
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@ -1141,6 +1141,10 @@ static struct test {
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.desc = "Test perf pmu format parsing",
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.desc = "Test perf pmu format parsing",
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.func = test__perf_pmu,
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.func = test__perf_pmu,
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},
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},
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{
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.desc = "Test dso data interface",
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.func = dso__test_data,
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},
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{
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{
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.func = NULL,
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.func = NULL,
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},
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},
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153
tools/perf/util/dso-test-data.c
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153
tools/perf/util/dso-test-data.c
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@ -0,0 +1,153 @@
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#include "util.h"
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#include "symbol.h"
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#define TEST_ASSERT_VAL(text, cond) \
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do { \
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if (!(cond)) { \
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pr_debug("FAILED %s:%d %s\n", __FILE__, __LINE__, text); \
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return -1; \
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} \
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} while (0)
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static char *test_file(int size)
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{
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static char buf_templ[] = "/tmp/test-XXXXXX";
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char *templ = buf_templ;
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int fd, i;
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unsigned char *buf;
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fd = mkostemp(templ, O_CREAT|O_WRONLY|O_TRUNC);
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buf = malloc(size);
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if (!buf) {
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close(fd);
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return NULL;
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}
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for (i = 0; i < size; i++)
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buf[i] = (unsigned char) ((int) i % 10);
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if (size != write(fd, buf, size))
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templ = NULL;
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close(fd);
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return templ;
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}
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#define TEST_FILE_SIZE (DSO__DATA_CACHE_SIZE * 20)
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struct test_data_offset {
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off_t offset;
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u8 data[10];
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int size;
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};
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struct test_data_offset offsets[] = {
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/* Fill first cache page. */
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{
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.offset = 10,
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.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
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.size = 10,
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},
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/* Read first cache page. */
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{
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.offset = 10,
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.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
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.size = 10,
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},
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/* Fill cache boundary pages. */
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{
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.offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
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.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
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.size = 10,
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},
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/* Read cache boundary pages. */
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{
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.offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
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.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
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.size = 10,
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},
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/* Fill final cache page. */
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{
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.offset = TEST_FILE_SIZE - 10,
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.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
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.size = 10,
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},
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/* Read final cache page. */
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{
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.offset = TEST_FILE_SIZE - 10,
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.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
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.size = 10,
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},
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/* Read final cache page. */
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{
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.offset = TEST_FILE_SIZE - 3,
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.data = { 7, 8, 9, 0, 0, 0, 0, 0, 0, 0 },
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.size = 3,
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},
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};
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int dso__test_data(void)
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{
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struct machine machine;
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struct dso *dso;
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char *file = test_file(TEST_FILE_SIZE);
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size_t i;
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TEST_ASSERT_VAL("No test file", file);
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memset(&machine, 0, sizeof(machine));
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dso = dso__new((const char *)file);
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/* Basic 10 bytes tests. */
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for (i = 0; i < ARRAY_SIZE(offsets); i++) {
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struct test_data_offset *data = &offsets[i];
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ssize_t size;
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u8 buf[10];
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memset(buf, 0, 10);
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size = dso__data_read_offset(dso, &machine, data->offset,
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buf, 10);
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TEST_ASSERT_VAL("Wrong size", size == data->size);
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TEST_ASSERT_VAL("Wrong data", !memcmp(buf, data->data, 10));
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}
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/* Read cross multiple cache pages. */
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{
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ssize_t size;
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int c;
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u8 *buf;
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buf = malloc(TEST_FILE_SIZE);
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TEST_ASSERT_VAL("ENOMEM\n", buf);
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/* First iteration to fill caches, second one to read them. */
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for (c = 0; c < 2; c++) {
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memset(buf, 0, TEST_FILE_SIZE);
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size = dso__data_read_offset(dso, &machine, 10,
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buf, TEST_FILE_SIZE);
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TEST_ASSERT_VAL("Wrong size",
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size == (TEST_FILE_SIZE - 10));
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for (i = 0; i < (size_t)size; i++)
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TEST_ASSERT_VAL("Wrong data",
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buf[i] == (i % 10));
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}
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free(buf);
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}
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dso__delete(dso);
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unlink(file);
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return 0;
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}
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@ -325,4 +325,5 @@ ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,
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ssize_t dso__data_read_addr(struct dso *dso, struct map *map,
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ssize_t dso__data_read_addr(struct dso *dso, struct map *map,
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struct machine *machine, u64 addr,
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struct machine *machine, u64 addr,
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u8 *data, ssize_t size);
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u8 *data, ssize_t size);
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int dso__test_data(void);
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#endif /* __PERF_SYMBOL */
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#endif /* __PERF_SYMBOL */
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