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Message-ID: <tip-f7add556534529ab18501ced98d7f3f2fc7f0621@git.kernel.org>
Date: Wed, 25 Jul 2012 12:28:17 -0700
From: tip-bot for Jiri Olsa <jolsa@...hat.com>
To: linux-tip-commits@...r.kernel.org
Cc: acme@...hat.com, eranian@...gle.com, mingo@...nel.org,
gorcunov@...nvz.org, a.p.zijlstra@...llo.nl,
benjamin.redelings@...cent.org, jolsa@...hat.com,
drepper@...il.com, robert.richter@....com, fweisbec@...il.com,
tglx@...utronix.de, cjashfor@...ux.vnet.ibm.com, asharma@...com,
linux-kernel@...r.kernel.org, hpa@...or.com, fche@...hat.com,
paulus@...ba.org, tzanussi@...il.com,
masami.hiramatsu.pt@...achi.com
Subject: [tip:perf/core] perf test: Add dso data caching tests
Commit-ID: f7add556534529ab18501ced98d7f3f2fc7f0621
Gitweb: http://git.kernel.org/tip/f7add556534529ab18501ced98d7f3f2fc7f0621
Author: Jiri Olsa <jolsa@...hat.com>
AuthorDate: Sun, 22 Jul 2012 14:14:40 +0200
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 25 Jul 2012 11:33:17 -0300
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@...hat.com>
Cc: Arun Sharma <asharma@...com>
Cc: Benjamin Redelings <benjamin.redelings@...cent.org>
Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: Cyrill Gorcunov <gorcunov@...nvz.org>
Cc: Frank Ch. Eigler <fche@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Robert Richter <robert.richter@....com>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Tom Zanussi <tzanussi@...il.com>
Cc: Ulrich Drepper <drepper@...il.com>
Link: http://lkml.kernel.org/r/1342959280-5361-18-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/Makefile | 1 +
tools/perf/builtin-test.c | 4 +
tools/perf/util/dso-test-data.c | 153 +++++++++++++++++++++++++++++++++++++++
tools/perf/util/symbol.h | 1 +
4 files changed, 159 insertions(+), 0 deletions(-)
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 75d74e5..e8f0579 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -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
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 5ce3030..d909eb7 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..541cdc7
--- /dev/null
+++ b/tools/perf/util/dso-test-data.c
@@ -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;
+}
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 */
--
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