Build the LTP test suite and install it, and then change into the DSF directory.
编译ltp测试套件并安装它，然后切换到dsf目录。
Once in the DSF directory, you will see both kernel_space and user_space directories.
进入DSF目录后，您将看到kernel_space目录和user_space目录。
Once in the DSF directory, you will see both kernel_space and user_space directories.
进入DSF目录后，您将看到kernel_space目录和user_space目录。
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