如何在使用yocto项目构建的linux操作系统中改变线程优先级？

sudo apt-get update
sudo apt-get install libpthread-stubs0-dev

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <sched.h>

#define NUM_THREADS 1

void *thread_function(void *arg) {
    printf("Hello from the thread!\n");
    pthread_exit(NULL);
}

int main() {
    pthread_t threads[NUM_THREADS];
    struct sched_param param;
    int policy;

    // 设置线程优先级
    param.sched_priority = 99; // 优先级值，范围从1（最低）到99（最高）
    policy = SCHED_FIFO; // 调度策略，SCHED_FIFO或SCHED_RR

    // 创建线程
    int rc = pthread_create(&threads[0], NULL, thread_function, NULL);
    if (rc) {
        printf("Error: unable to create thread %d\n", rc);
        exit(-1);
    }

    // 设置线程调度策略和优先级
    rc = pthread_setschedparam(threads[0], policy, &param);
    if (rc) {
        printf("Error: unable to set thread scheduling parameters %d\n", rc);
        exit(-1);
    }

    // 等待线程结束
    pthread_join(threads[0], NULL);

    return 0;
}

gcc -o set_thread_priority set_thread_priority.c -lpthread

./set_thread_priority