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finalturismo
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54584
Location: 56N 3W
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 Posted: Sat Apr 03, 2021 6:04 pm Post subject: |
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Moved from Kernel & Hardware to Documentation, Tips & Tricks.
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Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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mustafasalih1993
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Joined: 09 Feb 2021
Posts: 38
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| Posted: Sat Apr 03, 2021 8:32 pm Post subject: |
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nice video 
in case it will be useful for whoever search for this in the future
i upgrade the kernel with the following (i don't use initramfs):
| Code: | su
eselect kernel list
eselect kernel set $new kernel
cd /usr/src/linux/
cp ../$old-kernel-dir/.config .
make olddefconfig
make modules_prepare
make -j8
make -j8 modules_install
make install
emerge -av @module-rebuild
grub-mkconfig -o /boot/grub/grub.cfg |
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Naib
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Joined: 21 May 2004
Posts: 6067
Location: Removed by Neddy
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| Posted: Sat Apr 03, 2021 8:47 pm Post subject: |
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| mustafasalih1993 wrote: | nice video
in case it will be useful for whoever search for this in the future
i upgrade the kernel with the following (i don't use initramfs):
| Quote: | su
eselect kernel list
eselect kernel set $new kernel
cd /usr/src/linux/
cp ../$old-kernel-dir/.config .
make olddefconfig
make modules_prepare
make -j8
make -j8 modules_install
make install
emerge -av @module-rebuild
grub-mkconfig -o /boot/grub/grub.cfg |
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these can be reduced to just "make oldconfig" if you also do a make install as make install copies the config to /boot and make oldconfig reads from /boot for an old config
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| Quote: | | Removed by Chiitoo |
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mustafasalih1993
n00b
Joined: 09 Feb 2021
Posts: 38
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| Posted: Sat Apr 03, 2021 9:05 pm Post subject: |
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| Naib wrote: |
these can be reduced to just "make oldconfig" if you also do a make install as make install copies the config to /boot and make oldconfig reads from /boot for an old config |
Oh, very nice! thank you for the useful tip |
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pietinger
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Joined: 17 Oct 2006
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Location: Bavaria
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mustafasalih1993
n00b
Joined: 09 Feb 2021
Posts: 38
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| Posted: Sat Apr 03, 2021 11:55 pm Post subject: |
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| pietinger wrote: | | https://www.kernel.org/doc/html/latest/kbuild/modules.html says it is included in a "make". Is there a special need ? |
No nothing special, Thanks for pointing for that i didn't know that it's already done by default! |
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figueroa
Advocate
Joined: 14 Aug 2005
Posts: 3005
Location: Edge of marsh USA
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| Posted: Sat Sep 18, 2021 4:03 am Post subject: |
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Late to this party, I understand it's better to use make oldconfig rather than make olddefconfig. The olddefconfig option will put any new kernel configuration options at the kernel defaults, which may or may not be what you want. The oldconfig option will prompt you through new configuration options and let you select what's right for your system.
I mention this here since someone helped me by mentioning it to me.
Here are my kernel notes which I keep in the file /usr/src/kernel.txt:
| Code: | # Install your new kernel sources. Using 4.9.233 throughout as example.
emerge -a gentoo-sources
or
emerge -a =sys-kernel/gentoo-sources-4.9.233
# NB: /usr/src/linux should currently be a symlink to your current kernel sources.
# Copy the .config from your current kernel sources to your new kernel sources, i.e.
cd /usr/src/
cp linux/.config linux-4.9.233-gentoo/
# Remove the (old) symlink.
rm linux
# Create a new "linux" symlink to your new kernel sources, i.e.
ln -s linux-4.9.233-gentoo linux
# Alternatively, you can change/set the symlink using eselect. Example:
eselect kernel list
Available kernel symlink targets:
[1] linux-4.9.221-gentoo
[2] linux-4.9.228-gentoo *
[3] linux-4.9.233-gentoo
eselect kernel set 3
# Be sure to check your work with:
eselect kernel list
Available kernel symlink targets:
[1] linux-4.9.221-gentoo
[2] linux-4.9.228-gentoo
[3] linux-4.9.233-gentoo *
or
ls -l
lrwxrwxrwx 1 root root 20 Aug 24 13:20 linux -> linux-4.9.233-gentoo/
drwxr-xr-x 26 root root 4096 May 5 22:58 linux-4.9.221-gentoo/
drwxr-xr-x 26 root root 4096 Aug 9 23:11 linux-4.9.228-gentoo/
drwxr-xr-x 26 root root 4096 Aug 24 13:41 linux-4.9.233-gentoo/
# Change to the new kernel sources directory using,
cd linux/
# Update .config according to new kernel options.
make oldconfig
# Configure the new kernel.
make menuconfig
# Compile the new kernel and install the modules.
make && make modules_install
# Copy important kernel boot files to /boot
cp .config /boot/config-4.9.233-gentoo
cp System.map /boot/System.map-4.9.233-gentoo
cp arch/x86/boot/bzImange /boot/kernel-4.9.233-gentoo
# Alternatively, I understand instead of manually copying files to /boot, one
# can run "make install" which will do it for you automatically. I've never
# done it that way. My way contributes to developing muscle memory.
# remove old symlink "vmlinuz" to old /boot/kernel-n.n.nnn-gentoo and create new
# symlink "vmlinuz" to new kernel file
cd /boot
rm vmlinuz
ln -s kernel-4.9.233-gentoo vmlinuz
# Configure boot loader (grub assumed).
grub-mkconfig -o /boot/grub/grub.cfg
Reference: https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Kernel
Note: https://www.kernel.org/doc/html/v5.4/admin-guide/pm/cpufreq.html
Note: https://www.kernel.org/doc/html/v5.10/admin-guide/pm/cpufreq.html |
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Andy Figueroa
hp pavilion hpe h8-1260t/2AB5; spinning rust x3
i7-2600 @ 3.40GHz; 16 gb; Radeon HD 7570
amd64/23.0/split-usr/desktop (stable), OpenRC, -systemd -pulseaudio -uefi |
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Juippisi
Developer
Joined: 30 Sep 2005
Posts: 755
Location: /home
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Documentation, Tips & Tricks
