Add Real-time Linux Analysis tool (rtla) to linux-tools

[Andrea Righi]

[Impact]

The **rtla** is a meta-tool that includes a set of commands that aims to analyze the real-time properties of Linux.

Considering the latest "low-latency" capabilities acquired by the generic kernel and also considering the recent trend in Ubuntu to focus on performance and observability (see for example https://ubuntu.com/blog/ubuntu-performance-engineering-with-frame-pointers-by-default), it makes sense to provide more tools that can help to analyze timing/responsive performance, such as rtla.

[Test case]

Simple rtla usage to measure the timer irq / timer thread latency:

 $ sudo rtla timerlat

[Fix]

Enable the build of the rtla binary during the kernel build and ship it with linux-tools.

[Regression potential]

The only potential regression is an increased amount of size in the linux-tools package, due to the extra binary.

However, the binary itself is really small, the kernel already has all the required capabilities enabled and we don't need to introduce any additional user-space dependency, therefore such extra space is expected to be minimal.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux/6.8.0-32.32 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux' to 'verification-done-noble-linux'. If the problem still exists, change the tag 'verification-needed-noble-linux' to 'verification-failed-noble-linux'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 6.8.0-35.35

---------------
linux (6.8.0-35.35) noble; urgency=medium

  * noble/linux: 6.8.0-35.35 -proposed tracker (LP: #2065886)

  * CVE-2024-21823
    - VFIO: Add the SPR_DSA and SPR_IAX devices to the denylist
    - dmaengine: idxd: add a new security check to deal with a hardware erratum
    - dmaengine: idxd: add a write() method for applications to submit work

linux (6.8.0-34.34) noble; urgency=medium

  * noble/linux: 6.8.0-34.34 -proposed tracker (LP: #2065167)

  * Packaging resync (LP: #1786013)
    - [Packaging] debian.master/dkms-versions -- update from kernel-versions
      (main/2024.04.29)

linux (6.8.0-32.32) noble; urgency=medium

  * noble/linux: 6.8.0-32.32 -proposed tracker (LP: #2064344)

  * Packaging resync (LP: #1786013)
    - [Packaging] drop getabis data
    - [Packaging] update variants
    - [Packaging] update annotations scripts
    - [Packaging] debian.master/dkms-versions -- update from kernel-versions
      (main/2024.04.29)

  * Enable Nezha board (LP: #1975592)
    - [Config] Enable CONFIG_REGULATOR_FIXED_VOLTAGE on riscv64

  * Enable Nezha board (LP: #1975592) // Enable StarFive VisionFive 2 board
    (LP: #2013232)
    - [Config] Enable CONFIG_SERIAL_8250_DW on riscv64

  * RISC-V kernel config is out of sync with other archs (LP: #1981437)
    - [Config] Sync riscv64 config with other architectures

  * obsolete out-of-tree ivsc dkms in favor of in-tree one (LP: #2061747)
    - ACPI: scan: Defer enumeration of devices with a _DEP pointing to IVSC device
    - Revert "mei: vsc: Call wake_up() in the threaded IRQ handler"
    - mei: vsc: Unregister interrupt handler for system suspend
    - media: ipu-bridge: Add ov01a10 in Dell XPS 9315
    - SAUCE: media: ipu-bridge: Support more sensors

  * Fix after-suspend-mediacard/sdhc-insert test failed (LP: #2042500)
    - PCI/ASPM: Move pci_configure_ltr() to aspm.c
    - PCI/ASPM: Always build aspm.c
    - PCI/ASPM: Move pci_save_ltr_state() to aspm.c
    - PCI/ASPM: Save L1 PM Substates Capability for suspend/resume
    - PCI/ASPM: Call pci_save_ltr_state() from pci_save_pcie_state()
    - PCI/ASPM: Disable L1 before configuring L1 Substates
    - PCI/ASPM: Update save_state when configuration changes

  * RTL8852BE fw security fail then lost WIFI function during suspend/resume
    cycle (LP: #2063096)
    - wifi: rtw89: download firmware with five times retry

  * intel_rapl_common: Add support for ARL and LNL (LP: #2061953)
    - powercap: intel_rapl: Add support for Lunar Lake-M paltform
    - powercap: intel_rapl: Add support for Arrow Lake

  * Kernel panic during checkbox stress_ng_test on Grace running noble 6.8
    (arm64+largemem) kernel (LP: #2058557)
    - aio: Fix null ptr deref in aio_complete() wakeup

  * Avoid creating non-working backlight sysfs knob from ASUS board
    (LP: #2060422)
    - platform/x86: asus-wmi: Consider device is absent when the read is ~0

  * Include cifs.ko in linux-modules package (LP: #2042546)
    - [Packaging] Replace fs/cifs with fs/smb/client in inclusion list

  * Add Real-time Linux Analysis tool (rtla) to linux-tools (LP: #2059080)
    - SAUCE: rtla: fix deb build
 ...

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-aws/6.8.0-1009.9 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-aws' to 'verification-done-noble-linux-aws'. If the problem still exists, change the tag 'verification-needed-noble-linux-aws' to 'verification-failed-noble-linux-aws'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-azure/6.8.0-1008.8 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-azure' to 'verification-done-noble-linux-azure'. If the problem still exists, change the tag 'verification-needed-noble-linux-azure' to 'verification-failed-noble-linux-azure'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-gcp/6.8.0-1008.9 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-gcp' to 'verification-done-noble-linux-gcp'. If the problem still exists, change the tag 'verification-needed-noble-linux-gcp' to 'verification-failed-noble-linux-gcp'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-gke/6.8.0-1004.7 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-gke' to 'verification-done-noble-linux-gke'. If the problem still exists, change the tag 'verification-needed-noble-linux-gke' to 'verification-failed-noble-linux-gke'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-ibm/6.8.0-1006.6 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-ibm' to 'verification-done-noble-linux-ibm'. If the problem still exists, change the tag 'verification-needed-noble-linux-ibm' to 'verification-failed-noble-linux-ibm'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-intel/6.8.0-1005.12 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-intel' to 'verification-done-noble-linux-intel'. If the problem still exists, change the tag 'verification-needed-noble-linux-intel' to 'verification-failed-noble-linux-intel'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-nvidia/6.8.0-1007.7 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-nvidia' to 'verification-done-noble-linux-nvidia'. If the problem still exists, change the tag 'verification-needed-noble-linux-nvidia' to 'verification-failed-noble-linux-nvidia'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-oem-6.8/6.8.0-1006.6 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-oem-6.8' to 'verification-done-noble-linux-oem-6.8'. If the problem still exists, change the tag 'verification-needed-noble-linux-oem-6.8' to 'verification-failed-noble-linux-oem-6.8'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-riscv/6.8.0-35.35.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-riscv' to 'verification-done-noble-linux-riscv'. If the problem still exists, change the tag 'verification-needed-noble-linux-riscv' to 'verification-failed-noble-linux-riscv'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-raspi-realtime/6.8.0-2004.4 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-raspi-realtime' to 'verification-done-noble-linux-raspi-realtime'. If the problem still exists, change the tag 'verification-needed-noble-linux-raspi-realtime' to 'verification-failed-noble-linux-raspi-realtime'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-lowlatency/6.8.0-35.35.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-lowlatency' to 'verification-done-noble-linux-lowlatency'. If the problem still exists, change the tag 'verification-needed-noble-linux-lowlatency' to 'verification-failed-noble-linux-lowlatency'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-oracle/6.8.0-1006.6 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-oracle' to 'verification-done-noble-linux-oracle'. If the problem still exists, change the tag 'verification-needed-noble-linux-oracle' to 'verification-failed-noble-linux-oracle'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-ibm-gt/6.8.0-1004.5 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-ibm-gt' to 'verification-done-noble-linux-ibm-gt'. If the problem still exists, change the tag 'verification-needed-noble-linux-ibm-gt' to 'verification-failed-noble-linux-ibm-gt'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-nvidia-6.8/6.8.0-1008.8~22.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-nvidia-6.8' to 'verification-done-jammy-linux-nvidia-6.8'. If the problem still exists, change the tag 'verification-needed-jammy-linux-nvidia-6.8' to 'verification-failed-jammy-linux-nvidia-6.8'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-ibm-6.8/6.8.0-1008.8~22.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-ibm-6.8' to 'verification-done-jammy-linux-ibm-6.8'. If the problem still exists, change the tag 'verification-needed-jammy-linux-ibm-6.8' to 'verification-failed-jammy-linux-ibm-6.8'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-lowlatency-hwe-6.8/6.8.0-38.38.1~22.04.2 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-lowlatency-hwe-6.8' to 'verification-done-jammy-linux-lowlatency-hwe-6.8'. If the problem still exists, change the tag 'verification-needed-jammy-linux-lowlatency-hwe-6.8' to 'verification-failed-jammy-linux-lowlatency-hwe-6.8'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!