Dates and Events: |
OSADL Articles:
2017-09-12 12:00
OSADL project to create Open Source license checklists![]() Facilitate Open Source software delivery
2016-09-17 12:00
Preemption latency of real-time Linux systems![]() How to measure it – and how to fix it, if it's too high? |
OSADL Linux Add-on Patches
Ping SysRq - Latency histograms - NMI SysRq - Built-in kernel patchset - Precise load measurement

Why add-on?
- OSADL is providing some Linux add-on patches that either are too “hacky” or too specific to make it into the mainline Linux kernel.
- Some of the patches originally were part of the RT patch set, but were removed and handed over to OSADL in order not to jeopardize the mainlining process of the RT patch set.
- OSADL will make the Linux add-on patches available for every RT patchable kernel and later on for every supported kernel starting from version 4, patchlevel 16.
- If the Linux add-on patches apply without offset for a number of kernels, only a single patch will be provided, but labeled accordingly.
Patch list
Imported from RT patch and extended
- Ping SysRq: net-ipv4-icmp-ping-sysrq.patch
read more
- Latency histograms with culprit/victim info: latency-histograms.patch
read more
QA Farm utilities
Direct access to the patches
To avoid errors please apply the patches in the following order:
add-nmi-callback-and-raw-parport-driver.patch
latency-histograms.patch
net-ipv4-icmp-ping-sysrq.patch
save-current-patchset-in-kernel.patch
sched-add-per-cpu-load-measurement.patch
Manual
OSADL Linux Add-on Patches Manual | 154 K |
NMI SysRq
Kernel version | View | Download |
---|---|---|
5.10.4-rt22...5.10.4-rt22 | add-nmi-callback-and-raw-parport-driver.patch | add-nmi-callback-and-raw-parport-driver.patch |
Latency histograms
Kernel version | View | Download |
---|---|---|
5.10.4-rt22...5.10.4-rt22 | latency-histograms.patch | latency-histograms.patch |
Ping SysRq
Kernel version | View | Download |
---|---|---|
5.10.4-rt22...5.10.4-rt22 | net-ipv4-icmp-ping-sysrq.patch | net-ipv4-icmp-ping-sysrq.patch |
Built-in kernel patchset
Kernel version | View | Download |
---|---|---|
5.10.4-rt22...5.10.4-rt22 | save-current-patchset-in-kernel.patch | save-current-patchset-in-kernel.patch |
Precise load measurement
Kernel version | View | Download |
---|---|---|
5.10.4-rt22...5.10.4-rt22 | sched-add-per-cpu-load-measurement.patch | sched-add-per-cpu-load-measurement.patch |