lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sun, 22 Jul 2012 14:14:40 +0200 From: Jiri Olsa <jolsa@...hat.com> To: acme@...hat.com, a.p.zijlstra@...llo.nl, mingo@...e.hu, paulus@...ba.org, cjashfor@...ux.vnet.ibm.com, fweisbec@...il.com Cc: eranian@...gle.com, gorcunov@...nvz.org, tzanussi@...il.com, mhiramat@...hat.com, robert.richter@....com, fche@...hat.com, linux-kernel@...r.kernel.org, masami.hiramatsu.pt@...achi.com, drepper@...il.com, asharma@...com, benjamin.redelings@...cent.org, Jiri Olsa <jolsa@...hat.com> Subject: [PATCH 17/17] perf, tool: 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@...hat.com> --- tools/perf/Makefile | 1 + tools/perf/builtin-test.c | 4 + tools/perf/util/dso-test-data.c | 154 +++++++++++++++++++++++++++++++++++++++ tools/perf/util/symbol.h | 1 + 4 files changed, 160 insertions(+), 0 deletions(-) create mode 100644 tools/perf/util/dso-test-data.c diff --git a/tools/perf/Makefile b/tools/perf/Makefile index c18c790..1f550fa 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -364,6 +364,7 @@ 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 diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 5d59398..000efb0 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -1142,6 +1142,10 @@ static struct test { .func = test__perf_pmu, }, { + .desc = "Test dso data interface", + .func = dso__test_data, + }, + { .func = NULL, }, }; diff --git a/tools/perf/util/dso-test-data.c b/tools/perf/util/dso-test-data.c new file mode 100644 index 0000000..ec62977 --- /dev/null +++ b/tools/perf/util/dso-test-data.c @@ -0,0 +1,154 @@ + +#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, + }, +}; + +#define OFFSETS_CNT (sizeof(offsets) / sizeof(struct test_data__offset)) + +int dso__test_data(void) +{ + struct machine machine; + struct dso *dso; + char *file = test_file(TEST_FILE_SIZE); + int 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 < (int) OFFSETS_CNT; 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; i++) + TEST_ASSERT_VAL("Wrong data", + buf[i] == (i % 10)); + } + + free(buf); + } + + dso__delete(dso); + unlink(file); + return 0; +} diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 980d5f5..1fe733a 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -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 */ -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists