Fedora branched kernel with various very useful patches like: pf, uksm, bfs, bfq, gccnative, zram-lz4
Shell Makefile Perl Python
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Failed to load latest commit information.
scripts
.gitignore
0001-ALSA-hda-realtek-Support-Dell-headset-mode-for-ALC28.patch
0001-ALSA-hda-realtek-Support-headset-mode-for-ALC286-288.patch
0001-HID-usbhid-Add-HID_QUIRK_NOGET-for-Aten-DVI-KVM-swit.patch
0001-block-cgroups-kconfig-build-bits-for-BFQ-v7r8-4.0.patch
0001-cx18-add-missing-caps-for-the-PCM-video-device.patch
0001-drivers-rtc-rtc-em3027.c-add-device-tree-support.patch
0001-mwifiex-use-del_timer-variant-in-interrupt-context.patch
0001-n_tty-Fix-auditing-support-for-cannonical-mode.patch
0001-target-use-vfs_iter_read-write-in-fd_do_rw.patch
0002-block-introduce-the-BFQ-v7r8-I-O-sched-for-4.0.patch
0003-block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-v7r8-for-4.0.0.patch
4.0-sched-bfs-462.patch
ACPI-Limit-access-to-custom_method.patch
ARM-tegra-usb-no-reset.patch
Add-EFI-signature-data-types.patch
Add-an-EFI-signature-blob-parser-and-key-loader.patch
Add-option-to-automatically-enforce-module-signature.patch
Add-secure_modules-call.patch
Add-sysrq-option-to-disable-secure-boot-mode.patch
BFS-3.13-compile-fix-hu.patch
Btrfs-fix-range-cloning-when-same-inode-used-as-sour.patch
Btrfs-fix-regression-in-raid-level-conversion.patch
Btrfs-fix-uninit-variable-in-clone-ioctl.patch
Btrfs-send-add-missing-check-for-dead-clone-root.patch
Btrfs-send-don-t-leave-without-decrementing-clone-ro.patch
HID-lenovo-set-INPUT_PROP_POINTING_STICK.patch
HID-logitech-hidpp-add-a-module-parameter-to-keep-fi.patch
HID-multitouch-add-support-of-clickpads.patch
Input-Revert-Revert-synaptics-use-dmax-in-input_mt_a.patch
Input-add-vmmouse-driver.patch
Input-atmel_mxt_ts-add-support-for-Google-Pixel-2.patch
Input-atmel_mxt_ts-implement-support-for-T100-touch-.patch
Input-atmel_mxt_ts-split-out-touchpad-initialisation.patch
Input-joydev-don-t-classify-the-vmmouse-as-a-joystic.patch
Input-synaptics-add-min-max-quirk-for-Lenovo-S540.patch
Input-synaptics-allocate-3-slots-to-keep-stability-i.patch
Input-synaptics-pin-3-touches-when-the-firmware-repo.patch
KEYS-Add-a-system-blacklist-keyring.patch
Kbuild-Add-an-option-to-enable-GCC-VTA.patch
MODSIGN-Import-certificates-from-UEFI-Secure-Boot.patch
MODSIGN-Support-not-importing-certs-from-db.patch
Makefile
Makefile.config
Makefile.release
PCI-Lock-down-BAR-access-when-module-security-is-ena.patch
PatchList.txt
README.txt
Restrict-dev-mem-and-dev-kmem-when-module-loading-is.patch
Revert-Revert-ACPI-video-change-acpi-video-brightnes.patch
TODO
acpi-Ignore-acpi_rsdp-kernel-parameter-when-module-l.patch
acpi-video-Add-force-native-backlight-quirk-for-Leno.patch
acpi-video-Allow-forcing-native-backlight-on-non-win.patch
acpi_video-Add-enable_native_backlight-quirk-for-Mac.patch
amd-xgbe-phy-a0-Add-support-for-XGBE-PHY-on-A0.patch
arm-dts-am335x-bone-common-add-uart2_pins-uart4_pins.patch
arm-dts-am335x-bone-common-enable-and-use-i2c2.patch
arm-dts-am335x-bone-common-setup-default-pinmux-http.patch
arm-dts-am335x-boneblack-add-cpu0-opp-points.patch
arm-dts-am335x-boneblack-lcdc-add-panel-info.patch
arm-highbank-l2-reverts.patch
arm-i.MX6-Utilite-device-dtb.patch
arm64-avoid-needing-console-to-enable-serial-console.patch
asus-wmi-Restrict-debugfs-interface-when-module-load.patch
ath9k-rx-dma-stop-check.patch
bfs462-rtmn-fix.patch
blk-loop-avoid-too-many-pending-per-work-IO.patch
block-discard-bdi_unregister-in-favour-of-bdi_destro.patch
btrfs-cleanup-orphans-while-looking-up-default-subvo.patch
btrfs-incorrect-handling-for-fiemap_fill_next_extent.patch
compile-fixes.patch
config-arm-generic
config-arm64
config-armv7
config-armv7-generic
config-armv7-lpae
config-debug
config-generic
config-i686-PAE
config-local
config-no-extra
config-nodebug
config-powerpc-generic
config-powerpc64
config-powerpc64le
config-powerpc64p7
config-s390x
config-x86-32-generic
config-x86-generic
config-x86_64-generic
cpupower.config
cpupower.service
crash-driver.patch
criu-no-expert.patch
die-floppy-die.patch
disable-i8042-check-on-apple-mac.patch
drm-i915-Disable-verbose-state-checks.patch
drm-i915-Fix-ilk-watermarks-calculation-when-primary.patch
drm-i915-hush-check-crtc-state.patch
drm-i915-turn-off-wc-mmaps.patch
efi-Add-EFI_SECURE_BOOT-bit.patch
efi-Add-esrt-support.patch
efi-Disable-secure-boot-if-shim-is-in-insecure-mode.patch
efi-Make-EFI_SECURE_BOOT_SIG_ENFORCE-depend-on-EFI.patch
ext4-Allocate-entire-range-in-zero-range.patch
filter-aarch64.sh
filter-armv7hl.sh
filter-i686.sh
filter-modules.sh
filter-ppc64.sh
filter-ppc64le.sh
filter-ppc64p7.sh
filter-s390x.sh
filter-x86_64.sh
firmware-Drop-WARN-from-usermodehelper_read_trylock-.patch
hibernate-Disable-in-a-signed-modules-environment.patch
hibernate-freeze-filesystems.patch
input-kill-stupid-messages.patch
input-silence-i8042-noise.patch
kbuild-AFTER_LINK.patch
kernel.spec
kexec-Disable-at-runtime-if-the-kernel-enforces-modu.patch
kvm-x86-fix-kvm_apic_has_events-to-check-for-NULL-po.patch
lib-cpumask-Make-CPUMASK_OFFSTACK-usable-without-deb.patch
lis3-improve-handling-of-null-rate.patch
media-Fix-regression-in-some-more-dib0700-based-devi.patch
merge.pl
mod-extra.list
mod-extra.sh
mod-sign.sh
net-amd-Add-xgbe-a0-driver.patch
no-pcspkr-modalias.patch
pinctrl-pinctrl-single-must-be-initialized-early.patch
powerpc-powernv-Restore-non-volatile-CRs-after-nap.patch
rebase-notes.txt
scsi-sd_revalidate_disk-prevent-NULL-ptr-deref.patch
security-yama-Remove-unnecessary-selects-from-Kconfi.patch
silence-fbcon-logo.patch
sources
toshiba_acpi-Do-not-register-vendor-backlight-when-a.patch
uksm-0.1.2.4-beta-for-linux-v4.0.patch
upstream-reverts.patch
usb-make-xhci-platform-driver-use-64-bit-or-32-bit-D.patch
v4l-uvcvideo-Fix-incorrect-bandwidth-with-Chicony-de.patch
watchdog-Disable-watchdog-on-virtual-machines.patch
weird-root-dentry-name-debug.patch
x509.genkey
x86-Lock-down-IO-port-access-when-module-security-is.patch
x86-Restrict-MSR-access-when-module-loading-is-restr.patch
xen-pciback-Don-t-disable-PCI_COMMAND-on-PCI-device-.patch

README.txt

		Kernel package tips & tricks.
		~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The kernel is one of the more complicated packages in the distro, and
for the newcomer, some of the voodoo in the spec file can be somewhat scary.
This file attempts to document some of the magic.


Speeding up make prep
---------------------
The kernel is nearly 500MB of source code, and as such, 'make prep'
takes a while. The spec file employs some trickery so that repeated
invocations of make prep don't take as long.  Ordinarily the %prep
phase of a package will delete the tree it is about to untar/patch.
The kernel %prep keeps around an unpatched version of the tree,
and makes a symlink tree clone of that clean tree and than applies
the patches listed in the spec to the symlink tree.
This makes a huge difference if you're doing multiple make preps a day.
As an added bonus, doing a diff between the clean tree and the symlink
tree is slightly faster than it would be doing two proper copies of the tree.


build logs.
-----------
There's a convenience helper script in scripts/grab-logs.sh
that will grab the build logs from koji for the kernel version reported
by make verrel


config heirarchy.
-----------------
Instead of having to maintain a config file for every arch variant we build on,
the kernel spec uses a nested system of configs.  At the top level, is
config-generic. Add options here that should be present in every possible
config on all architectures.

Beneath this are per-arch overrides. For example config-x86-generic add
additional x86 specific options, and also _override_ any options that were
set in config-generic.

The heirarchy looks like this..

                           config-generic
                                 |
                         config-x86-generic
                         |                |
             config-x86-32-generic   config-x86-64-generic

An option set in a lower level will override the same option set in one
of the higher levels.


There exist two additional overrides, config-debug, and config-nodebug,
which override -generic, and the per-arch overrides. It is documented
further below.


debug options.
--------------
This is a little complicated, as the purpose & meaning of this changes
depending on where we are in the release cycle.
If we are building for a current stable release, 'make release' has
typically been run already, which sets up the following..
- Two builds occur, a 'kernel' and a 'kernel-debug' flavor.
- kernel-debug will get various heavyweight debugging options like
  lockdep etc turned on.

If we are building for rawhide, 'make debug' has been run, which changes
the status quo to:
- We only build one kernel 'kernel'
- The debug options from 'config-debug' are always turned on.
This is done to increase coverage testing, as not many people actually
run kernel-debug.

To add new debug options, add an option to _both_ config-debug and config-nodebug,
and also new stanzas to the Makefile 'debug' and 'release' targets.

Sometimes debug options get added to config-generic, or per-arch overrides
instead of config-[no]debug. In this instance, the options should have no
discernable performance impact, otherwise they belong in the debug files.