查找Linux内核源代码的最佳途径

/*
 * Free all assets associated with a process,
 * and notify "group_stop" of its death.
 */
void do_exit(long code)
{
    struct task_struct *tsk = current;
    struct mm_struct *mm = tsk->mm;
    struct exit_call_struct *p;

    WARN_ON(atomic_read(&tsk->fs_excl));
    tracehook_finish_exit(tsk);

    if (vtime_accounting_enabled() && !do_task_stat(tsk))
        vtime_exit(tsk);
    cgroup_exit(tsk);

    if (!tsk->io_context)
        tsk->io_context = &noop_ioc;

    /* sync mm's RSS info back to its owner when required */
    if (mm)
        sync_mm_rss(mm);
    /*
     * Make sure we are holding no locks:
     */
    DEBUG_LOCKS_WARN_ON(!rwsem_is_locked(&current->mm->mmap_sem) &&
                        !rwsem_is_locked(&current->mm->page_table_lock));

    BUG_ON(tsk->journal_info != NULL);
    do_memory_accounting(tsk);
    security_ops->task_free(tsk);

    thread_group_exit(code);
}

git clone https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

/*
 * Main exit path for a task. Do some of the accounting and invoke
 * the relevant process signal handler.
 */
void do_exit(long code)
{
    struct task_struct *tsk = current;
    
    /* Free all assets associated with the process */
    exit_task_struct(tsk);
    
    /* Notify group_stop of the process's death */
    exit_notify(code);
    
    /* Call the scheduler to switch to a new process */
    schedule();
}