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Unterschiede
Hier werden die Unterschiede zwischen zwei Versionen angezeigt.
| Beide Seiten der vorigen RevisionVorhergehende ÜberarbeitungNächste Überarbeitung | Vorhergehende Überarbeitung | ||
| software:linux:realtime:preempt_rt:build_kernel [2019-02-13 15:54] – mgehrig2 | software:linux:realtime:preempt_rt:build_kernel [2023-04-11 10:56] (aktuell) – gelöscht Urs Graf | ||
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| - | ====== Building a preemt-rt kernel ====== | ||
| - | ===== Introduction ===== | ||
| - | The kernel can be easily installed on a running system. During the boot process, the kernel is started with the latest version number by default. If you want to return to an old version, you can select the desired kernel version in the grub menu " | ||
| - | |||
| - | ===== Preparation ===== | ||
| - | ==== Installing the toolchain ==== | ||
| - | < | ||
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| - | ==== Get the preemt-rt patch ==== | ||
| - | Check [[https:// | ||
| - | If not, choose the next newer version and download the patch. | ||
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| - | For example:\\ | ||
| - | If you are running a 4.4.165 kernel choose the following patch:\\ | ||
| - | [[https:// | ||
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| - | If you want to use a kernel version that is not already installed, please install the generic kernel with the correct version with [[software: | ||
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| - | ==== Get the Linux sources ==== | ||
| - | * Clone the kernel < | ||
| - | * Check out the same version as choosen for the patch < | ||
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| - | ==== Install the compatible generic kernel ==== | ||
| - | For RT-patch v4.4.148-rt166-rc1 install generic kernel 4.4.0 | ||
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| - | [[software: | ||
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| - | ===== Build the kernel ===== | ||
| - | ==== Patch the kernel sources ==== | ||
| - | * Go into the kenrel source directory | ||
| - | * Applay the patch< | ||
| - | patch -p1 < < | ||
| - | |||
| - | ==== Choose the build variant ==== | ||
| - | This selection will affect, how many modules will be built. | ||
| - | The sizef and the range of functions of the monolitic kernel will not be changed. | ||
| - | Additional modules can be built and installed after the kernel is installed. | ||
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| - | * **a.) Full module support** **(recommended)** A normal Linux distribution, | ||
| - | * **b.) Minimal**: This will only build modules which are essential. Some basic function like Wifi drivers may be missing. Some basic Ethernet drive are in the monolitic part of the kernel and will still work. You can add all modules you need manually. | ||
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| - | ==== Configure the kernel ==== | ||
| - | === Full module support === | ||
| - | - Copy the kernel configuration from the generic kernel. | ||
| - | * Make sure you copy the correct config-file with the correct version (i.e. '' | ||
| - | cp / | ||
| - | make oldconfig</ | ||
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