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Drew Fustini (BayLibre)12/09/2022, 10:00
This BoF session will discuss recent changes and current issues in gpio and pinctrl. Bartosz Golaszewski is the maintainer GPIO kernel subsystem and libgpiod and told me that he plans to attend. Linus Walleij is the pinctrl subsystem maintainer and told me he would like to participate if he can join remotely.
The gpio subsystem in the kernel gained a v2 uAPI in the recent years - in fact it...
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Nick Alcock (Oracle Corporation)12/09/2022, 10:00
A brief look at sort -k 3 /proc/kallsyms makes it clear that the kernel symbol table is stuffed full of duplicate names with distinct addresses. These are all symbols in distinct translation units, so it would presumably be nice for tracers to be able to distinguish between them (e.g. to trace only specific functions known to be called from TUs of interest). Right now, for symbols in the core...
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Chris Mason12/09/2022, 15:00
The Btrfs developers are planning on attending LPC and would like to have a dedicated BoF so we can sit down and do some planning and have some discussions.
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Hans de Goede (Red Hat)12/09/2022, 15:00
The current userspace API for brightness control offered by
/sys/class/backlight devices has various problems:-
There is no way to map the backlight device to a specific
display-output / panel -
On x86 there can be multiple firmware + direct-hw-access
methods for controlling the backlight and the kernel may
register multiple backlight-devices based on this which are
all...
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Mr Ron Minnich (Google), Jonathan Zhang12/09/2022, 17:00
In the last few years, the open source host firmware communities made great progress on the coreboot/LinuxBoot stack. Now it is ready for prime time. With this stack, Linux developers gain total control of host firmware (aka. BIOS): host firmware bugs can be tackled as easily as Linux bugs; host firmware can be developed together with kernel/tools to enable new hardware technologies and/or to...
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Christopher Hall (Intel)12/09/2022, 17:00
Intel's 11th generation - and later - platforms have a Timed I/O capability. The Timed I/O logic outputs edge events synchronously using the platform clock or timestamps input edge events using the platform clock. The output trigger and input timestamp operations are implemented in hardware and are precise within 1 platform clock cycle. The platform clock also drives the clocksource (TSC)...
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Andrรฉ Almeida (Igalia)13/09/2022, 10:00
In the past years, a new interface for futex had been under development, in the hope to solve the issues found in the current syscall. One of the remaining things to be fixed is to add NUMA-awareness to it. Currently, all kernelspace memory resources are stored in a single memory node, adding latency for every futex operation that happens outside of this node.
The goal of this session is to...
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Paul McKenney (Meta)13/09/2022, 12:00
This is a gathering to discuss Linux-kernel RCU-related topics, both internals and usage.
The exact topics depend on all of you, the attendees. In 2018, the focus was entirely on the interaction between RCU and the -rt tree. In 2019, the main gathering had me developing a trivial implementation of RCU on a whiteboard, coding-interview style, complete with immediate feedback on the...
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Jonathan Cameron (Huawei Technologies R&D (UK)), Lukas Wunner13/09/2022, 15:00
In 2021, at the Plumbers VFIO/IOMMU/PCI micro-conference, we introduced device attestation of PCI devices via CMA/SPDM (Component Measurement and Authentication / Security Protocol and Data Model). However, device attestation and SPDM is not...
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Gautham R Shenoy (AMD Inc.), Prateek Nayak (AMD Inc.)13/09/2022, 18:30
This is a follow-up BoF for the "Linux Kernel Scheduling and Split LLC architectures" topic that will be presented at the "Real Time and Scheduling Microconference.
This BoF is for exploring the solution space and to discuss the way forward.
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Karim Yaghmour (Opersys inc.)14/09/2022, 12:00
As every year, we are going to have an Android BoF after the Android MC in order to allow more time for free-form discussion of the various topics presented during the Android MC.
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Nick Alcock (Oracle Corporation)14/09/2022, 15:00
When a process wants to ptrace a child without imposing unacceptable signal-handling latencies, it has to waitpid() on it, so that when a signal is received it is immediately detected and can be dispatched to the tracee. But if that process also wants to do anything else at all, it cannot be stuck in waitpid: it must be able to go off and do that other work. So it must use waitpid(WNOHANG). To...
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kanchan joshi (Samsung semiconductor (SSIR))14/09/2022, 15:00
Io_uring command is a new async-ioctl-like facility to attach io_uring capabilities to any arbitrary command implemented by the underlying provider (driver, filesystem, etc.). The first use case of the construct is to implement a new passthrough path to NVMe. This path guarantees both availability and scalability. It helps both the early adopters of NVMe and the kernel community as emerging...
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David Vernet (Meta)14/09/2022, 15:00
Google and Meta are both investing in frameworks for implementing pluggable schedulers, ghOSt and SCX respectively. This BoF will discuss both frameworks, and how we can best tackle the scheduling problems that the frameworks are trying to solve.
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ATISH PATRA (Rivos)14/09/2022, 17:00
RISC-V community needs several topics to be discussed. Some of them will be discussed during MC but the allotted time may not be sufficient. We will probably some more discussion time. Here are some potential topics.
- ACPI patch acceptance policy
-- ECR approval, RVI freeze or ACPI release (may significantly delay things ) - Vendor SBI extensions
-- There are few vendor...
- ACPI patch acceptance policy
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Lennart Poettering, Zbigniew Jฤdrzejewski-Szmek (Red Hat)14/09/2022, 17:00
We'll talk about all stuff systemdee.
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Saul Wold
This talk will address what was done to extend the SPDX tooling in the Yocto Project to generate SPDX for the Linux kernel. Last year the Yocto Project added support for generating SPDX data from upstream projects that are built for creating an embedded linux image. Initially, that work was done for userspace libraries and applications. The Yocto Project extended the functionality to the...
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Saul Wold
This talk will address what was done to extend the SPDX tooling in the Yocto Project to generate SPDX for the Linux kernel. Last year the Yocto Project added support for generating SPDX data from upstream projects that are built for creating an embedded linux image. Initially, that work was done for userspace libraries and applications. The Yocto Project extended the functionality to the...
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