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I am trying to compile the iscsi-target software SCST. It wants me to apply a patch to my Linux kernel in order to allow for certain performance gains. The problem is I still new to Linux development. Where do I begin? How do I apply the patch? Do I need to recompile the kernel? Help!
I am running Ubuntu 10.04.3 amd64
Kernel version 2.6.32-28-server
ianc1215
Posted 2011-08-18T19:58:42.557
Reputation: 2 884
5
Your Linux distribution usually has its own instructions. Search their website or ask on IRC – or at least tell us the distro; without knowing it, it's impossible to provide a reliable anwer.
The generic instructions are:
Download the kernel source from Kernel.org. "Stable" is probably the best choice. Extract to a convenient place (I use ~/src/linux).
README.Once inside the source directory, copy the current kernel's configuration, with:
zcat /proc/config.gz > .config
If /proc doesn't have it, look for /boot/config-[version] instead.
Apply the patch, with:
patch -p1 < foo.patch (try -p0 if it gets rejected).
Compile the kernel with:
make silentoldconfig
make
Install the modules with:
sudo make modules_install
Install the kernel image .../linux/arch/i386/boot/bzImage to wherever your bootloader wants it. (For example, /boot/vmlinuz-custom.)
Build an initramfs for the new kernel, if your distribution uses it, and again make sure the bootloader knows its location. For example, on Arch Linux you would use:
mkinitcpio -k /boot/vmlinuz-custom -g /boot/initramfs-custom
user1686
Posted 2011-08-18T19:58:42.557
Reputation: 283 655
Oops silly me I forgot that part. I running on Ubuntu 10.04.3 amd64. My kernel is 2.6.32-28-server. – ianc1215 – 2011-08-18T20:13:32.610
Well so far everything is compiling,....taking a long time though. Thanks for the help. – ianc1215 – 2011-08-19T18:13:23.583
Yes, you'll need to compile - a patch is a modification of source code, not the binary. How you apply the patch should be in their README (or INSTALL, if they have it). – new123456 – 2011-08-18T20:08:56.127