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Date: Thu, 13 May 2010 16:03:52 +1000
From: "Ian Munsie" <imunsie@....ibm.com>
To: linux-kernel@...r.kernel.org
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Steven Rostedt <rostedt@...dmis.org>,
Ian Munsie <imunsie@....ibm.com>,
Tom Zanussi <tzanussi@...il.com>
Subject: [PATCH 7/7] perf trace test: Test cases for kernel->host format string conversion
From: Ian Munsie <imunsie@....ibm.com>
This patch adds some test cases to be run with perf test to verify the
correct operation of the convert_kernel_host_format function.
Signed-off-by: Ian Munsie <imunsie@....ibm.com>
---
tools/perf/builtin-test.c | 36 ++++++++++++++++++++++++++++++
tools/perf/util/test-cases.h | 8 ++++++
tools/perf/util/trace-event-parse.c | 41 +++++++++++++++++++++++++++++++++++
3 files changed, 85 insertions(+), 0 deletions(-)
create mode 100644 tools/perf/util/test-cases.h
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 0339612..d1c6179 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -11,6 +11,19 @@
#include "util/session.h"
#include "util/symbol.h"
#include "util/thread.h"
+#include "util/test-cases.h"
+
+#define INIT_TEST_CASES \
+ int test_case_err = 0; \
+ int test_case_num = 0;
+
+#define TEST_CASE(fn) \
+ pr_debug("--- test case #%d start ---\n", ++test_case_num); \
+ test_case_err += fn; \
+ pr_debug("--- test case #%d end ---\n", test_case_num); \
+
+#define TEST_CASES_ERR test_case_err
+
static long page_size;
@@ -219,6 +232,25 @@ out:
return err;
}
+static int test__convert_kernel_host_format(void)
+{
+ INIT_TEST_CASES
+
+ TEST_CASE(test_case__convert_kernel_host_format(4, "0x44444444", 1, "%p", 0x44444444UL))
+ TEST_CASE(test_case__convert_kernel_host_format(8, "0x88888888", 1, "%p", 0x88888888UL))
+ TEST_CASE(test_case__convert_kernel_host_format(8, "0x12345678abcdef00", 1, "%p", 0x12345678abcdef00ULL))
+
+ TEST_CASE(test_case__convert_kernel_host_format(4, "9223372036854775807", 2, "%lld", 9223372036854775807LL))
+ TEST_CASE(test_case__convert_kernel_host_format(8, "9223372036854775807", 2, "%lld", 9223372036854775807LL))
+
+ TEST_CASE(test_case__convert_kernel_host_format(4, "2147483647", 1, "%ld", 2147483647))
+ TEST_CASE(test_case__convert_kernel_host_format(8, "2147483647", 1, "%ld", 2147483647))
+ TEST_CASE(test_case__convert_kernel_host_format(8, "9223372036854775807", 1, "%ld", 9223372036854775807LL))
+
+ return TEST_CASES_ERR;
+}
+
+
static struct test {
const char *desc;
int (*func)(void);
@@ -228,6 +260,10 @@ static struct test {
.func = test__vmlinux_matches_kallsyms,
},
{
+ .desc = "trace handles printing values from kernels with differing long size",
+ .func = test__convert_kernel_host_format,
+ },
+ {
.func = NULL,
},
};
diff --git a/tools/perf/util/test-cases.h b/tools/perf/util/test-cases.h
new file mode 100644
index 0000000..be1da92
--- /dev/null
+++ b/tools/perf/util/test-cases.h
@@ -0,0 +1,8 @@
+#ifndef PERF_TEST_CASES_H_
+#define PERF_TEST_CASES_H_
+
+int test_case__convert_kernel_host_format(const int kern_long_size,
+ const char *expected_out, const int ls,
+ const char *kern_format, const unsigned long long val);
+
+#endif
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index f74abdb..ac3d0b7 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -33,6 +33,7 @@
#include "../perf.h"
#include "util.h"
#include "trace-event.h"
+#include "test-cases.h"
int header_page_ts_offset;
int header_page_ts_size;
@@ -2536,6 +2537,46 @@ static void convert_kernel_host_format(char *kernel_format, int *ls)
memcpy(kernel_format, user_format, uptr - user_format);
}
+int test_case__convert_kernel_host_format(const int kern_long_size,
+ const char *expected_out, const int ls,
+ const char *kern_format, const unsigned long long val)
+{
+ char test_fmt[32];
+ char test_out[32];
+ int test_ls = ls;
+ int err = 0;
+
+ assert(strlen(expected_out) < 32);
+ assert(strlen(kern_format) < 32);
+
+ long_size = kern_long_size;
+ memcpy(test_fmt, kern_format, 32);
+
+ convert_kernel_host_format(test_fmt, &test_ls);
+ switch (test_ls) {
+ case 0:
+ snprintf(test_out, 32, test_fmt, (int)val);
+ break;
+ case 1:
+ snprintf(test_out, 32, test_fmt, (long)val);
+ break;
+ case 2:
+ snprintf(test_out, 32, test_fmt, (long long)val);
+ break;
+ default:
+ err = -1;
+ pr_info("Invalid ls (%d)\n", test_ls);
+ }
+
+ if (strncmp(test_out, expected_out, 32)) {
+ err = -1;
+ pr_info("FAIL: Expected string: %s\n"
+ " Returned string: %s\n",
+ expected_out, test_out);
+ }
+ return err;
+}
+
static void pretty_print(void *data, int size, struct event *event)
{
struct print_fmt *print_fmt = &event->print_fmt;
--
1.7.1
--
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