ubuntu 16.10 使用rtai补丁[linux-4.4.115+rtai-5.1]

最新推荐文章于 2023-02-28 08:29:29 发布

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本文详细介绍了在Ubuntu环境下从下载内核源码开始，应用一系列补丁，配置内核，编译和安装定制内核的过程，特别关注于如何将RTAI实时系统集成到Ubuntu中，包括配置关键内核选项以确保与RTAI兼容，以及编译和安装RTAI库及驱动。

1,下载ubuntu内核源码(https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.115/)和补丁

>cd ubuntu-kernel
>git clone git://git.launchpad.net/~ubuntu-kernel-test/ubuntu/+source/linux/+git/mainline-crack -b v4.4.115 v4.4.115

0001-base-packaging.patch
0002-UBUNTU-SAUCE-add-vmlinux.strip-to-BOOT_TARGETS1-on-p.patch
0003-UBUNTU-SAUCE-tools-hv-lsvmbus-add-manual-page.patch
0004-UBUNTU-SAUCE-no-up-disable-pie-when-gcc-has-it-enabl.patch
0005-debian-changelog.patch
0006-configs-based-on-Ubuntu-4.4.0-113.136.patch

和
linux-image-4.4.115-0404115-generic_4.4.115-0404115.201802031230_amd64.deb

和rtai-5.1(目前的最高版本)(https://www.rtai.org/)并解压

>tar Jxf rtai-5.1.tar.bz2

2,打补丁:

>cd v4.4.115
>patch -p1 < ../0001-base-packaging.patch
>patch -p1 < ../0002-UBUNTU-SAUCE-add-vmlinux.strip-to-BOOT_TARGETS1-on-p.patch
>patch -p1 < ../0003-UBUNTU-SAUCE-tools-hv-lsvmbus-add-manual-page.patch
>patch -p1 < ../0004-UBUNTU-SAUCE-no-up-disable-pie-when-gcc-has-it-enabl.patch
>patch -p1 < ../0005-debian-changelog.patch
>patch -p1 < ../0006-configs-based-on-Ubuntu-4.4.0-113.136.patch
>patch -p1 < ../rtai-5.1/base/arch/x86/patches/hal-linux-4.4.115-x86-10.patch

应该都能打成功

3,获得.config文件

>cd ..
>dpkg -x linux-image-4.4.115-0404115-generic_4.4.115-0404115.201802031230_amd64.deb ./configs
>cp ./configs/boot/config-4.4.115-0404115-generic ./v4.4.115/.config

4,配置内核:

>cd ./v4.4.115
>make menuconfig

按以下修改内核配置参数(见:https://github.com/relacs/makertai)

Basic kernel configuration

For making the Linux kernel work with RTAI you should check the following settings in the kernel configuration dialog.

This list is updated for RTAI 5.1. For other RTAI versions read /usr/local/src/rtai/README.CONF_RMRKS !

    "General setup":
        1,Disable "Enable sytem-call auditing support" (AUDITSYSCALL)
        2,Important: //重要,不改的话insmod rtai_sched.ko时会死机 
          set "Stack Protector buffer overflow detection" (at the bottom of the menu) to "Regular" (CC_STACKPROTECTOR_REGULAR) 
          - or even "None" (CC_STACKPROTECTOR_NONE) if the latency test crashes.

    "Power management and ACPI options":
        1,In "ACPI (Advanced Configuration and Power Interface) Support":
            Disable "Processor" (ACPI_PROCESSOR)
        2,Disable "CPU Frequency scaling" (CPU_FREQ)
        3,In "CPU Idle":
            Disable "CPU idle PM support" (CPU_IDLE)

    "Device Drivers":
        1,In "Staging drivers":
            Deselect "Data acquisition support (comedi)" (COMEDI)

    "Kernel hacking":
        1,In "Compile-time checks and compiler options":
            Disable "Compile the kernel with debug info" (DEBUG_INFO) Disabling debugging information makes the kernel much smaller. So unless you know that you need it disable it.
        2,Disable "Tracers" (FTRACE)

Leave the configuration dialog by pressing "Exit" until you are asked "Save kernel config?". Select "Yes".

Then the new kernel is being compiled - be patient.

5,编译:

>make -j8 LOCALVERSION=-rtai-5.1 deb-pkg

6,安装:

>cd ../
>sudo dpkg -i linux-headers-4.4.115-rtai-5.1+_4.4.115-rtai-5.1+-1_amd64.deb
>sudo dpkg -i linux-image-4.4.115-rtai-5.1+_4.4.115-rtai-5.1+-1_amd64.deb
>sudo reboot　//启动新内核

一般都能成功启动新内核。

7,在新内核下编译rtai-5.1库和驱动

>cd  ubuntu-kernel/rtai-5.1
>make menuconfig
-----------------------
General --->
 (/opt/rtai-5.1_v4.4.115) Installation directory                                         
 (/usr/src/linux-headers-4.4.115-rtai-5.1+) Linux source tree
--------------------------------------------------------------
>make
>sudo make install
>cd /opt/rtai-5.1_v4.4.115/modules
>sudo insmod rtai_hal.ko
>sudo insmod rtai_sched.ko  //如果到这儿没死机就说明rtai安装成功了
>sudo insmod rtai_fifos.ko
>sudo insmod rtai_sem.ko
>sudo insmod rtai_shm.ko
>sudo insmod rtai_rtdm.ko

附上配置文件:
1,https://github.com/liuzq71/config_of_rtai5.1
2,https://github.com/liuzq71/v4.4.115-rtai5.1