[PATCH 4/4] smptests/smplock01: New test
Sebastian Huber
sebastian.huber at embedded-brains.de
Wed May 29 15:31:09 UTC 2013
---
testsuites/smptests/Makefile.am | 1 +
testsuites/smptests/configure.ac | 1 +
testsuites/smptests/smplock01/Makefile.am | 19 ++
testsuites/smptests/smplock01/init.c | 405 +++++++++++++++++++++++++++
testsuites/smptests/smplock01/smplock01.doc | 15 +
testsuites/smptests/smplock01/smplock01.scn | 22 ++
6 files changed, 463 insertions(+), 0 deletions(-)
create mode 100644 testsuites/smptests/smplock01/Makefile.am
create mode 100644 testsuites/smptests/smplock01/init.c
create mode 100644 testsuites/smptests/smplock01/smplock01.doc
create mode 100644 testsuites/smptests/smplock01/smplock01.scn
diff --git a/testsuites/smptests/Makefile.am b/testsuites/smptests/Makefile.am
index 7fc0066..70e1000 100644
--- a/testsuites/smptests/Makefile.am
+++ b/testsuites/smptests/Makefile.am
@@ -19,6 +19,7 @@ SUBDIRS += smpatomic04
SUBDIRS += smpatomic05
SUBDIRS += smpatomic06
SUBDIRS += smpatomic07
+SUBDIRS += smplock01
endif
include $(top_srcdir)/../automake/subdirs.am
diff --git a/testsuites/smptests/configure.ac b/testsuites/smptests/configure.ac
index 89af868..6a2a443 100644
--- a/testsuites/smptests/configure.ac
+++ b/testsuites/smptests/configure.ac
@@ -48,5 +48,6 @@ smpatomic04/Makefile
smpatomic05/Makefile
smpatomic06/Makefile
smpatomic07/Makefile
+smplock01/Makefile
])
AC_OUTPUT
diff --git a/testsuites/smptests/smplock01/Makefile.am b/testsuites/smptests/smplock01/Makefile.am
new file mode 100644
index 0000000..05bffe6
--- /dev/null
+++ b/testsuites/smptests/smplock01/Makefile.am
@@ -0,0 +1,19 @@
+rtems_tests_PROGRAMS = smplock01
+smplock01_SOURCES = init.c
+
+dist_rtems_tests_DATA = smplock01.scn smplock01.doc
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP at .cfg
+include $(top_srcdir)/../automake/compile.am
+include $(top_srcdir)/../automake/leaf.am
+
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include
+
+LINK_OBJS = $(smplock01_OBJECTS)
+LINK_LIBS = $(smplock01_LDLIBS)
+
+smplock01$(EXEEXT): $(smplock01_OBJECTS) $(smplock01_DEPENDENCIES)
+ @rm -f smplock01$(EXEEXT)
+ $(make-exe)
+
+include $(top_srcdir)/../automake/local.am
diff --git a/testsuites/smptests/smplock01/init.c b/testsuites/smptests/smplock01/init.c
new file mode 100644
index 0000000..88ef985
--- /dev/null
+++ b/testsuites/smptests/smplock01/init.c
@@ -0,0 +1,405 @@
+/*
+ * Copyright (c) 2013 embedded brains GmbH. All rights reserved.
+ *
+ * embedded brains GmbH
+ * Dornierstr. 4
+ * 82178 Puchheim
+ * Germany
+ * <rtems at embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include "config.h"
+#endif
+
+#include <rtems.h>
+
+#include "tmacros.h"
+
+/* FIXME: Use C11 for atomic operations */
+
+static void atomic_store(int *addr, int value)
+{
+ *addr = value;
+
+ RTEMS_COMPILER_MEMORY_BARRIER();
+}
+
+static unsigned int atomic_load(const int *addr)
+{
+ RTEMS_COMPILER_MEMORY_BARRIER();
+
+ return *addr;
+}
+
+/* FIXME: Add barrier to Score */
+
+typedef struct {
+ int value;
+ int sense;
+ SMP_lock_Control lock;
+} barrier_control;
+
+typedef struct {
+ int sense;
+} barrier_state;
+
+#define BARRIER_CONTROL_INITIALIZER { 0, 0, SMP_LOCK_INITIALIZER }
+
+#define BARRIER_STATE_INITIALIZER { 0 }
+
+static void barrier_wait(
+ barrier_control *control,
+ barrier_state *state,
+ int cpu_count
+)
+{
+ int sense = ~state->sense;
+ int value;
+
+ state->sense = sense;
+
+ _SMP_lock_Acquire(&control->lock);
+ value = control->value;
+ ++value;
+ control->value = value;
+ _SMP_lock_Release(&control->lock);
+
+ if (value == cpu_count) {
+ atomic_store(&control->value, 0);
+ atomic_store(&control->sense, sense);
+ }
+
+ while (atomic_load(&control->sense) != sense) {
+ /* Wait */
+ }
+}
+
+#define TASK_PRIORITY 1
+
+#define CPU_COUNT 32
+
+#define TEST_COUNT 5
+
+typedef enum {
+ INITIAL,
+ START_TEST,
+ STOP_TEST
+} states;
+
+typedef struct {
+ int state;
+ barrier_control barrier;
+ rtems_id timer_id;
+ rtems_interval timeout;
+ unsigned long counter[TEST_COUNT];
+ unsigned long test_counter[TEST_COUNT][CPU_COUNT];
+ SMP_lock_Control lock;
+} global_context;
+
+static global_context context = {
+ .state = INITIAL,
+ .barrier = BARRIER_CONTROL_INITIALIZER,
+ .lock = SMP_LOCK_INITIALIZER
+};
+
+static const char *test_names[TEST_COUNT] = {
+ "aquire global lock with local counter",
+ "aquire global lock with global counter",
+ "aquire local lock with local counter",
+ "aquire local lock with global counter",
+ "aquire global lock with busy section"
+};
+
+static void stop_test_timer(rtems_id timer_id, void *arg)
+{
+ global_context *ctx = arg;
+
+ atomic_store(&ctx->state, STOP_TEST);
+}
+
+static void wait_for_state(global_context *ctx, int desired_state)
+{
+ while (atomic_load(&ctx->state) != desired_state) {
+ /* Wait */
+ }
+}
+
+static bool assert_state(global_context *ctx, int desired_state)
+{
+ return atomic_load(&ctx->state) == desired_state;
+}
+
+typedef void (*test_body)(
+ int test,
+ global_context *ctx,
+ barrier_state *bs,
+ int cpu_count,
+ int cpu_self
+);
+
+static void test_0_body(
+ int test,
+ global_context *ctx,
+ barrier_state *bs,
+ int cpu_count,
+ int cpu_self
+)
+{
+ unsigned long counter = 0;
+
+ while (assert_state(ctx, START_TEST)) {
+ _SMP_lock_Acquire(&ctx->lock);
+ _SMP_lock_Release(&ctx->lock);
+ ++counter;
+ }
+
+ ctx->test_counter[test][cpu_self] = counter;
+}
+
+static void test_1_body(
+ int test,
+ global_context *ctx,
+ barrier_state *bs,
+ int cpu_count,
+ int cpu_self
+)
+{
+ unsigned long counter = 0;
+
+ while (assert_state(ctx, START_TEST)) {
+ _SMP_lock_Acquire(&ctx->lock);
+ ++ctx->counter[test];
+ _SMP_lock_Release(&ctx->lock);
+ ++counter;
+ }
+
+ ctx->test_counter[test][cpu_self] = counter;
+}
+
+static void test_2_body(
+ int test,
+ global_context *ctx,
+ barrier_state *bs,
+ int cpu_count,
+ int cpu_self
+)
+{
+ unsigned long counter = 0;
+ SMP_lock_Control lock = SMP_LOCK_INITIALIZER;
+
+ while (assert_state(ctx, START_TEST)) {
+ _SMP_lock_Acquire(&lock);
+ _SMP_lock_Release(&lock);
+ ++counter;
+ }
+
+ ctx->test_counter[test][cpu_self] = counter;
+}
+
+static void test_3_body(
+ int test,
+ global_context *ctx,
+ barrier_state *bs,
+ int cpu_count,
+ int cpu_self
+)
+{
+ unsigned long counter = 0;
+ SMP_lock_Control lock = SMP_LOCK_INITIALIZER;
+
+ while (assert_state(ctx, START_TEST)) {
+ _SMP_lock_Acquire(&lock);
+
+ /* The counter value is not interesting, only the access to it */
+ ++ctx->counter[test];
+
+ _SMP_lock_Release(&lock);
+ ++counter;
+ }
+
+ ctx->test_counter[test][cpu_self] = counter;
+}
+
+static void busy_section(void)
+{
+ int i;
+
+ for (i = 0; i < 101; ++i) {
+ RTEMS_COMPILER_MEMORY_BARRIER();
+ }
+}
+
+static void test_4_body(
+ int test,
+ global_context *ctx,
+ barrier_state *bs,
+ int cpu_count,
+ int cpu_self
+)
+{
+ unsigned long counter = 0;
+
+ while (assert_state(ctx, START_TEST)) {
+ _SMP_lock_Acquire(&ctx->lock);
+ busy_section();
+ _SMP_lock_Release(&ctx->lock);
+ ++counter;
+ }
+
+ ctx->test_counter[test][cpu_self] = counter;
+}
+
+static const test_body test_bodies[TEST_COUNT] = {
+ test_0_body,
+ test_1_body,
+ test_2_body,
+ test_3_body,
+ test_4_body
+};
+
+static void run_tests(
+ global_context *ctx,
+ barrier_state *bs,
+ int cpu_count,
+ int cpu_self,
+ bool master
+)
+{
+ int test;
+
+ for (test = 0; test < TEST_COUNT; ++test) {
+ barrier_wait(&ctx->barrier, bs, cpu_count);
+
+ if (master) {
+ rtems_status_code sc = rtems_timer_fire_after(
+ ctx->timer_id,
+ ctx->timeout,
+ stop_test_timer,
+ ctx
+ );
+ rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+ atomic_store(&ctx->state, START_TEST);
+ }
+
+ wait_for_state(ctx, START_TEST);
+
+ (*test_bodies[test])(test, ctx, bs, cpu_count, cpu_self);
+ }
+
+ barrier_wait(&ctx->barrier, bs, cpu_count);
+}
+
+static void task(rtems_task_argument arg)
+{
+ global_context *ctx = (global_context *) arg;
+ int cpu_count = (int) rtems_smp_get_number_of_processors();
+ int cpu_self = rtems_smp_get_current_processor();
+ rtems_status_code sc;
+ barrier_state bs = BARRIER_STATE_INITIALIZER;
+
+ run_tests(ctx, &bs, cpu_count, cpu_self, false);
+
+ sc = rtems_task_suspend(RTEMS_SELF);
+ rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+}
+
+static void test(void)
+{
+ global_context *ctx = &context;
+ int cpu_count = (int) rtems_smp_get_number_of_processors();
+ int cpu_self = rtems_smp_get_current_processor();
+ int cpu;
+ int test;
+ rtems_status_code sc;
+ barrier_state bs = BARRIER_STATE_INITIALIZER;
+
+ for (cpu = 0; cpu < cpu_count; ++cpu) {
+ if (cpu != cpu_self) {
+ rtems_id task_id;
+
+ sc = rtems_task_create(
+ rtems_build_name('T', 'A', 'S', 'K'),
+ TASK_PRIORITY,
+ RTEMS_MINIMUM_STACK_SIZE,
+ RTEMS_DEFAULT_MODES,
+ RTEMS_DEFAULT_ATTRIBUTES,
+ &task_id
+ );
+ rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+ sc = rtems_task_start(task_id, task, (rtems_task_argument) ctx);
+ rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+ }
+ }
+
+ ctx->timeout = 10 * rtems_clock_get_ticks_per_second();
+
+ sc = rtems_timer_create(rtems_build_name('T', 'I', 'M', 'R'), &ctx->timer_id);
+ rtems_test_assert(sc == RTEMS_SUCCESSFUL);
+
+ run_tests(ctx, &bs, cpu_count, cpu_self, true);
+
+ for (test = 0; test < TEST_COUNT; ++test) {
+ unsigned long sum = 0;
+
+ printf("%s\n", test_names[test]);
+
+ for (cpu = 0; cpu < cpu_count; ++cpu) {
+ unsigned long local_counter = ctx->test_counter[test][cpu];
+
+ sum += local_counter;
+
+ printf(
+ "\tprocessor %i, local counter %lu\n",
+ cpu,
+ local_counter
+ );
+ }
+
+ printf(
+ "\tglobal counter %lu, sum of local counter %lu\n",
+ ctx->counter[test],
+ sum
+ );
+ }
+}
+
+static void Init(rtems_task_argument arg)
+{
+ puts("\n\n*** TEST SMPLOCK 1 ***");
+
+ test();
+
+ puts("*** END OF TEST SMPLOCK 1 ***");
+
+ rtems_test_exit(0);
+}
+
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_SMP_APPLICATION
+
+#define CONFIGURE_SMP_MAXIMUM_PROCESSORS CPU_COUNT
+
+#define CONFIGURE_MAXIMUM_TASKS CPU_COUNT
+
+#define CONFIGURE_MAXIMUM_SEMAPHORES 1
+
+#define CONFIGURE_MAXIMUM_TIMERS 1
+
+#define CONFIGURE_INIT_TASK_PRIORITY TASK_PRIORITY
+#define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES
+#define CONFIGURE_INIT_TASK_ATTRIBUTES RTEMS_DEFAULT_ATTRIBUTES
+
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>
diff --git a/testsuites/smptests/smplock01/smplock01.doc b/testsuites/smptests/smplock01/smplock01.doc
new file mode 100644
index 0000000..32f0a3a
--- /dev/null
+++ b/testsuites/smptests/smplock01/smplock01.doc
@@ -0,0 +1,15 @@
+This file describes the directives and concepts tested by this test set.
+
+test set name: smplock01
+
+The screen file was obtained on a PowerPC QorIQ P1020E target running with a
+processor frequency of 800MHz.
+
+directives:
+
+ - _SMP_lock_Acquire()
+ - _SMP_lock_Release()
+
+concepts:
+
+ - Benchmark the SMP lock implementation
diff --git a/testsuites/smptests/smplock01/smplock01.scn b/testsuites/smptests/smplock01/smplock01.scn
new file mode 100644
index 0000000..4d995fb
--- /dev/null
+++ b/testsuites/smptests/smplock01/smplock01.scn
@@ -0,0 +1,22 @@
+*** TEST SMPLOCK 1 ***
+aquire global lock with local counter
+ processor 0, local counter 15964
+ processor 1, local counter 99982377
+ global counter 0, sum of local counter 99998341
+aquire global lock with global counter
+ processor 0, local counter 166073
+ processor 1, local counter 99569103
+ global counter 99735176, sum of local counter 99735176
+aquire local lock with local counter
+ processor 0, local counter 148133948
+ processor 1, local counter 148148108
+ global counter 0, sum of local counter 296282056
+aquire local lock with global counter
+ processor 0, local counter 55938783
+ processor 1, local counter 55951781
+ global counter 55951781, sum of local counter 111890564
+aquire global lock with busy section
+ processor 0, local counter 10694328
+ processor 1, local counter 10694346
+ global counter 0, sum of local counter 21388674
+*** END OF TEST SMPLOCK 1 ***
--
1.7.7
More information about the devel
mailing list