Applying PREEMPT RT Patches dunfell l4t r32.4.3 - OE4T/meta-tegra GitHub Wiki
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Find which git has your meta-tegra is currently using
user@pc:~/meta-tegra$ cat recipes-kernel/linux/linux-tegra_4.9.bb | grep -n SRCREV -A5 -B5 13- 14-LINUX_VERSION_EXTENSION ?= "-l4t-r${@'.'.join(d.getVar('L4T_VERSION').split('.')[:2])}" 15-SCMVERSION ??= "y" 16- 17-SRCBRANCH = "patches${LINUX_VERSION_EXTENSION}" 18:SRCREV = "0be1a57448010ae60505acf4e2153638455cee7c" 19-KBRANCH = "${SRCBRANCH}" 20-SRC_REPO = "github.com/OE4T/linux-tegra-4.9" 21-KERNEL_REPO = "${SRC_REPO}" 22-SRC_URI = "git://${KERNEL_REPO};name=machine;branch=${KBRANCH} \ 23- ${@'file://localversion_auto.cfg' if d.getVar('SCMVERSION') == 'y' else ''} \ -
git clone https://github.com/you/linux-tegra-4.9 -
cd linux-tegra-4.9 -
git checkout -b patches-l4t-r32.4-rt patches-l4t-r32.4(or specify the git hash from the SRCREV setting in the recipe) -
cd scripts -
./rt-patch.sh apply-patches -
cd .. -
git add . -
git commit -m "Applied PREEMPT RT Patch to kernel" -
git push --set-upstream origin patches-l4t-r32.4-rt -
git log to find the commit hash for your rt patched kernel source
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Now go back to your meta-tegra folder
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touch recipes-kernel/linux/linux-tegra_4.9.bbappend -
put the below in your linux-tegra_4.9.bbappend
SRCBRANCH = "patches${LINUX_VERSION_EXTENSION}-rt"
SRCREV = "##YOUR_HASH###"
KBRANCH = "${SRCBRANCH}"
SRC_REPO = "##YOUR_FORK###"
KERNEL_REPO = "${SRC_REPO}"
SRC_URI = "git://${KERNEL_REPO};name=machine;branch=${KBRANCH};protocol=ssh \
${@'file://localversion_auto.cfg' if d.getVar('SCMVERSION') == 'y' else ''} \
"