tests: kernel: test_critical: Porting legacy tests to unified kernel
This is the port of the legacy/kernel/test_critical test case to the unified kernel, and to use the ztest framework Change-Id: I10834cbb51446b4a12fc680c0b65438d550f4d85 Signed-off-by: Sergio Rodriguez <sergio.sf.rodriguez@intel.com> Signed-off-by: Anas Nashif <anas.nashif@intel.com>
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4
tests/kernel/critical/Makefile
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4
tests/kernel/critical/Makefile
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BOARD ?= qemu_x86
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CONF_FILE = prj.conf
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include ${ZEPHYR_BASE}/Makefile.inc
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48
tests/kernel/critical/README.txt
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tests/kernel/critical/README.txt
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Title: Offload to the Kernel offload workqueue
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Description:
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This test verifies that the kernel offload workqueue operates as
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expected.
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This test has two tasks that increment a counter. The routine that
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increments the counter is invoked from workqueue due to the two tasks
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calling using it. The final result of the counter is expected
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to be the the number of times work item was called to increment
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the counter.
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This is done with time slicing both disabled and enabled to ensure that the
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result always matches the number of times the workqueue is called.
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--------------------------------------------------------------------------------
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Building and Running Project:
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This microkernel project outputs to the console. It can be built and executed
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on QEMU as follows:
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make qemu
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--------------------------------------------------------------------------------
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Troubleshooting:
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Problems caused by out-dated project information can be addressed by
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issuing one of the following commands then rebuilding the project:
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make clean # discard results of previous builds
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# but keep existing configuration info
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or
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make pristine # discard results of previous builds
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# and restore pre-defined configuration info
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--------------------------------------------------------------------------------
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Sample Output:
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Running test suite kernel_critical_test
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tc_start() - test_critical
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===================================================================
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PASS - test_critical.
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===================================================================
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PROJECT EXECUTION SUCCESSFUL
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2
tests/kernel/critical/prj.conf
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tests/kernel/critical/prj.conf
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CONFIG_NUM_TASK_PRIORITIES=50
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CONFIG_ZTEST=y
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4
tests/kernel/critical/src/Makefile
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tests/kernel/critical/src/Makefile
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ccflags-y += -I${ZEPHYR_BASE}/tests/include
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include $(ZEPHYR_BASE)/tests/Makefile.test
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obj-y = critical.o
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200
tests/kernel/critical/src/critical.c
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tests/kernel/critical/src/critical.c
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/* critical.c - test the offload workqueue API */
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/*
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* Copyright (c) 2013-2014 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* DESCRIPTION
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* This module tests the offload workqueue.
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*/
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#include <zephyr.h>
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#include <sections.h>
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#include <ztest.h>
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#define NUM_MILLISECONDS 5000
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#define TEST_TIMEOUT 20000
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static uint32_t criticalVar;
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static uint32_t altTaskIterations;
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static struct k_work_q offload_work_q;
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static char __stack offload_work_q_stack[CONFIG_OFFLOAD_WORKQUEUE_STACK_SIZE];
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#define STACK_SIZE 1024
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static char __stack stack1[STACK_SIZE];
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static char __stack stack2[STACK_SIZE];
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K_SEM_DEFINE(ALT_SEM, 0, UINT_MAX);
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K_SEM_DEFINE(REGRESS_SEM, 0, UINT_MAX);
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K_SEM_DEFINE(TEST_SEM, 0, UINT_MAX);
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/**
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*
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* @brief Routine to be called from a workqueue
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*
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* This routine increments the global variable <criticalVar>.
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*
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* @return 0
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*/
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void criticalRtn(struct k_work *unused)
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{
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volatile uint32_t x;
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ARG_UNUSED(unused);
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x = criticalVar;
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criticalVar = x + 1;
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}
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/**
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*
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* @brief Common code for invoking offload work
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*
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* @param count number of critical section calls made thus far
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*
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* @return number of critical section calls made by task
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*/
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uint32_t criticalLoop(uint32_t count)
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{
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int64_t mseconds;
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mseconds = k_uptime_get();
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while (k_uptime_get() < mseconds + NUM_MILLISECONDS) {
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struct k_work work_item;
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k_work_init(&work_item, criticalRtn);
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k_work_submit_to_queue(&offload_work_q, &work_item);
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count++;
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}
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return count;
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}
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/**
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*
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* @brief Alternate task
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*
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* This routine invokes the workqueue many times.
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*
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* @return N/A
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*/
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void AlternateTask(void *arg1, void *arg2, void *arg3)
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{
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ARG_UNUSED(arg1);
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ARG_UNUSED(arg2);
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ARG_UNUSED(arg3);
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k_sem_take(&ALT_SEM, K_FOREVER); /* Wait to be activated */
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altTaskIterations = criticalLoop(altTaskIterations);
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k_sem_give(®RESS_SEM);
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k_sem_take(&ALT_SEM, K_FOREVER); /* Wait to be re-activated */
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altTaskIterations = criticalLoop(altTaskIterations);
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k_sem_give(®RESS_SEM);
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}
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/**
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*
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* @brief Regression task
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*
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* This routine calls invokes the workqueue many times. It also checks to
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* ensure that the number of times it is called matches the global variable
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* <criticalVar>.
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*
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* @return N/A
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*/
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void RegressionTask(void *arg1, void *arg2, void *arg3)
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{
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uint32_t nCalls = 0;
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ARG_UNUSED(arg1);
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ARG_UNUSED(arg2);
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ARG_UNUSED(arg3);
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k_sem_give(&ALT_SEM); /* Activate AlternateTask() */
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nCalls = criticalLoop(nCalls);
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/* Wait for AlternateTask() to complete */
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assert_true(k_sem_take(®RESS_SEM, TEST_TIMEOUT) == 0,
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"Timed out waiting for REGRESS_SEM");
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assert_equal(criticalVar, nCalls + altTaskIterations,
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"Unexpected value for <criticalVar>");
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k_sched_time_slice_set(10, 10);
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k_sem_give(&ALT_SEM); /* Re-activate AlternateTask() */
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nCalls = criticalLoop(nCalls);
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/* Wait for AlternateTask() to finish */
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assert_true(k_sem_take(®RESS_SEM, TEST_TIMEOUT) == 0,
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"Timed out waiting for REGRESS_SEM");
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assert_equal(criticalVar, nCalls + altTaskIterations,
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"Unexpected value for <criticalVar>");
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k_sem_give(&TEST_SEM);
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}
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static void init_objects(void)
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{
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criticalVar = 0;
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altTaskIterations = 0;
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k_work_q_start(&offload_work_q,
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offload_work_q_stack,
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sizeof(offload_work_q_stack),
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CONFIG_OFFLOAD_WORKQUEUE_PRIORITY);
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}
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static void start_threads(void)
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{
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k_thread_spawn(stack1, STACK_SIZE,
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AlternateTask, NULL, NULL, NULL,
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K_PRIO_PREEMPT(12), 0, 0);
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k_thread_spawn(stack2, STACK_SIZE,
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RegressionTask, NULL, NULL, NULL,
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K_PRIO_PREEMPT(12), 0, 0);
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}
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void test_critical(void)
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{
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init_objects();
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start_threads();
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assert_true(k_sem_take(&TEST_SEM, TEST_TIMEOUT * 2) == 0,
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"Timed out waiting for TEST_SEM");
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}
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void test_main(void)
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{
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ztest_test_suite(kernel_critical_test, ztest_unit_test(test_critical));
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ztest_run_test_suite(kernel_critical_test);
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}
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2
tests/kernel/critical/testcase.ini
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2
tests/kernel/critical/testcase.ini
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[test]
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tags = core bat_commit
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