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en:c2_building_rt_kernel [2016/08/11 13:59] moon.linux [Checkout] |
en:c2_building_rt_kernel [2016/10/06 11:38] (current) moon.linux [Checkout] |
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| ====== Build RT kernel ====== | ====== Build RT kernel ====== | ||
| - | To build RT kernelyou need to update the kernel with Real time kernel patches. | + | To build RT kernel we need to update the kernel with Real time kernel patches. |
| RT Patches file can be found on https://www.kernel.org/pub/linux/kernel/projects/rt/ | RT Patches file can be found on https://www.kernel.org/pub/linux/kernel/projects/rt/ | ||
| Line 27: | Line 27: | ||
| ==== Checkout ==== | ==== Checkout ==== | ||
| - | You can checkout Linux kernel source tree from **[[https://github.com/hardkernel/linux/tree/odroidc2-3.14.y-android|Hardkernel's Github]]**. | + | You can checkout Linux kernel source tree from **[[https://github.com/hardkernel/linux/tree/odroidc2-3.14.y|Hardkernel's Github]]**. |
| === RT Linux Kernel === | === RT Linux Kernel === | ||
| Line 36: | Line 36: | ||
| $ wget https://www.kernel.org/pub/linux/kernel/projects/rt/3.14/older/patch-3.14.65-rt68.patch.gz | $ wget https://www.kernel.org/pub/linux/kernel/projects/rt/3.14/older/patch-3.14.65-rt68.patch.gz | ||
| $ zcat patch-3.14.65-rt68.patch.gz > patch-3.14.65-rt68.patch | $ zcat patch-3.14.65-rt68.patch.gz > patch-3.14.65-rt68.patch | ||
| + | $ patch -p1 < patch-3.14.65-rt68.patch | ||
| </code> | </code> | ||
| - | Note: Few file have confilct so you need to update manually these patches before build the kernel. | + | **Note:** Arc arm64 rt kernel have some missing patches so we have to update the kernel for |
| + | Following patches need to be applied to build the kernel. | ||
| - | === BuildRT Linux Kernel === | + | **Note:** These patches can be found in 3.18.y-rt patch series. |
| - | Kernel Configration for RT Full Preemptible Kernel. | + | |
| + | <code> | ||
| + | arm64: Mark PMU interrupt IRQF_NO_THREAD.patch | ||
| + | arm64: Allow forced irq threading.patch | ||
| + | arch/arm64: Add lazy preempt support.patch | ||
| + | arm64: replace read_lock to rcu lock in call_step_hook | ||
| + | </code> | ||
| + | |||
| + | **Note:** Few file have conflict so you need to update manually these patches before build the kernel. | ||
| + | |||
| + | **Note:** Please find the links for all the updated patch in the following repository. | ||
| + | |||
| + | https://github.com/moonlinux/linux/tree/odroidc2-3.14.y-rt | ||
| + | ==== BuildRT Linux Kernel ==== | ||
| + | Kernel Configuration for RT Full Preemptible Kernel. | ||
| Select following options to build the kernel. | Select following options to build the kernel. | ||
| Line 49: | Line 65: | ||
| (X) Fully Preemptible Kernel (RT) ---> | (X) Fully Preemptible Kernel (RT) ---> | ||
| </code> | </code> | ||
| - | Note: update the odroidc2_defconfig with current modified. | + | **Note:** update the odroidc2_defconfig with current modified. |
| <code> | <code> | ||
| $ cp .config arch/arm64/configs/odroidc2_defconfig | $ cp .config arch/arm64/configs/odroidc2_defconfig | ||
| Line 62: | Line 78: | ||
| $ make <-j4> Image dtbs modules | $ make <-j4> Image dtbs modules | ||
| </code> | </code> | ||
| - | You have done to compile the Linux kernel (Image), the device tree file (.dtb) and kernel modules (.ko). | ||
| + | You have done to compile the Linux kernel (Image), the device tree file (.dtb) and kernel modules (.ko). | ||
| <WRAP center round important 100%> | <WRAP center round important 100%> | ||
