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/*
* Copyright (c) 2006-2024 RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2024/10/28 Shell Added smp.smoke
* 2025/12/3 ChuanN-sudo add standardized utest documentation block
*/
/**
* Test Case Name: SMP Call Smoke 003 Test
*
* Test Objectives:
* - Validate asynchronous rt_smp_call_cpu_mask() reliability under high-contention.
* - Ensure no Inter-Processor Interrupts are lost when fired rapidly without waiting.
* - Test core APIs: rt_smp_call_cpu_mask() (with wait_flag=0), rt_thread_control(RT_THREAD_CTRL_BIND_CPU)
*
* Test Scenarios:
* - One worker thread pinned to each CPU core.
* - Threads repeatedly call non-blocking rt_smp_call_cpu_mask() with random targets.
* - After dispatching Inter-Processor Interrupts, threads migrate across cores to yield processing time.
* - Final verification checks eventual consistency.
*
* Verification Metrics:
* - Callback count must eventually match requested count.
* - Callbacks execute in interrupt-disabled context.
* - All threads successfully created and started.
*
* Dependencies:
* - Hardware requirements: QEMU emulator or any multi-core hardware platform that supports RT-Thread.
* - Software configuration:
* - RT_USING_UTEST must be enabled (select "RT-Thread Utestcases" in menuconfig).
* - RT_UTEST_SMP_CALL_FUNC must be enabled(enable via: RT-Thread Utestcases -> Kernel Components -> Drivers -> SMP-Call Test -> SMP-Call Smoke Test).
* - Environmental Assumptions: System scheduler and SMP services working normally.
*
* Expected Results:
* - Progress logs: A series of '#' characters indicating asynchronous callback executions.
* - Final output: "[ PASSED ] [ result ] testcase (components.drivers.smp_call.smoke_003)"
*/
#include <rtdevice.h>
#include <utest.h>
#include <utest_assert.h>
#include <smp_call.h>
#define PERCPU_TEST_COUNT 10000
#define NEWLINE_ON 80
static struct rt_semaphore _utestd_exited;
static rt_thread_t _utestd[RT_CPUS_NR];
static rt_atomic_t _entry_counts[RT_CPUS_NR];
static void _logging_progress(void)
{
static rt_atomic_t counts;
rt_ubase_t old;
rt_kputs("#");
old = rt_atomic_add(&counts, 1);
if (old % NEWLINE_ON == 0)
{
rt_kputs("\n");
}
}
static void _test_smp_cb(void *param)
{
rt_ubase_t req_cpuid = (rt_ubase_t)param;
if (!rt_hw_interrupt_is_disabled())
{
/* SYNC.004 */
uassert_true(0);
}
_logging_progress();
rt_atomic_add(&_entry_counts[req_cpuid], 1);
}
static void _utestd_entry(void *oncpu_param)
{
rt_ubase_t oncpu = (rt_ubase_t)oncpu_param;
volatile int cpu_mask;
volatile int popcount = 0;
rt_thread_t curthr = rt_thread_self();
if (rt_hw_cpu_id() != oncpu)
{
/* SYNC.004 */
uassert_true(0);
}
for (size_t i = 0; i < PERCPU_TEST_COUNT; i++)
{
cpu_mask = rand() % RT_ALL_CPU;
rt_smp_call_cpu_mask(cpu_mask, _test_smp_cb, oncpu_param, 0);
popcount += __builtin_popcount(cpu_mask);
}
for (size_t i = 0; i < RT_CPUS_NR; i++)
{
rt_thread_control(curthr, RT_THREAD_CTRL_BIND_CPU, (void *)i);
}
LOG_D("popcount %d, _entry_counts[%d] %d", popcount, oncpu, _entry_counts[oncpu]);
/* MP.002 */
uassert_true(popcount == rt_atomic_load(&_entry_counts[oncpu]));
rt_sem_release(&_utestd_exited);
}
static void _async_call(void)
{
for (size_t i = 0; i < RT_CPUS_NR; i++)
{
rt_thread_startup(_utestd[i]);
}
for (size_t i = 0; i < RT_CPUS_NR; i++)
{
rt_sem_take(&_utestd_exited, RT_WAITING_FOREVER);
}
}
static rt_err_t utest_tc_init(void)
{
for (size_t i = 0; i < RT_CPUS_NR; i++)
{
rt_atomic_store(&_entry_counts[i], 0);
_utestd[i] = rt_thread_create("utestd", _utestd_entry, (void *)i,
UTEST_THR_STACK_SIZE, UTEST_THR_PRIORITY,
20);
rt_thread_control(_utestd[i], RT_THREAD_CTRL_BIND_CPU, (void *)i);
/* SYNC.001, SYNC.002, SYNC.003 */
uassert_true(_utestd[i] != RT_NULL);
}
rt_sem_init(&_utestd_exited, "utestd", 0, RT_IPC_FLAG_PRIO);
srand(rt_tick_get());
return RT_EOK;
}
static rt_err_t utest_tc_cleanup(void)
{
rt_sem_detach(&_utestd_exited);
return RT_EOK;
}
static void _testcase(void)
{
UTEST_UNIT_RUN(_async_call);
}
UTEST_TC_EXPORT(_testcase, "components.drivers.smp_call.smoke_003", utest_tc_init, utest_tc_cleanup, 10);
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