From 53ff6a6a2bdeb5173d5ea0b3795b36737af8abb3 Mon Sep 17 00:00:00 2001 From: sbwml Date: Sat, 12 Oct 2024 08:36:46 +0800 Subject: [PATCH 10/10] kernel: add PREEMPT_RT support for aarch64/x86_64 Signed-off-by: sbwml --- config/Config-kernel.in | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/config/Config-kernel.in b/config/Config-kernel.in index eb0f000..76092d4 100644 --- a/config/Config-kernel.in +++ b/config/Config-kernel.in @@ -20,6 +20,19 @@ config KERNEL_BUILD_DOMAIN returned by 'uname -a' on running systems. If not set, uses system hostname at build time. +config KERNEL_PREEMPT_RT + bool "Fully Preemptible Kernel (Real-Time)" + depends on (aarch64 || x86_64) && LINUX_6_12 + help + This option turns the kernel into a real-time kernel by replacing + various locking primitives (spinlocks, rwlocks, etc.) with + preemptible priority-inheritance aware variants, enforcing + interrupt threading and introducing mechanisms to break up long + non-preemptible sections. This makes the kernel, except for very + low level and critical code paths (entry code, scheduler, low + level interrupt handling) fully preemptible and brings most + execution contexts under scheduler control. + config KERNEL_PRINTK bool "Enable support for printk" default y -- 2.43.5