FSYNC Patch Missing from linux59 kernel package

outsidefactor · October 22, 2020, 5:22am

The FSYNC Proton patch was included in all of the repository versions of linux58 but is missing from linux59 all of the sudden.

Does anyone know why the FSYNC patch was dropped? Is this an oversight? Will FSYNC be returning to 5.9 any time soon, or should we all get busy rolling our own custom kernels again?

BS86 · October 22, 2020, 7:15am

I tried to build a RC version of 5.9 with the fsync patch some weeks ago and the build failed because the patch was not compatible with 5.9 yet.
That said, I did not check if there is a 5.9 compatible patch out yet. If you can find one, you might link it here so that @philm or @nightmare-2021 can pick it up.

nightmare-2021 · October 22, 2020, 11:17am

I’m uploaded 5.9.1-2 with a new Futex patch to unstable.
Please test it and give me a feedback.

You’ll find all infos for the new patch (including new features) under the following link:

https://lore.kernel.org/lkml/20200722234538.166697-2-posk@posk.io/

BS86 · October 22, 2020, 11:26am

I would love to test it, but no unstable mirror contains it yet.

Building currently fails because 0103-futex1.patch is missing in the gitlab repo.

nightmare-2021 · October 22, 2020, 11:34am

Mirrors must sync first - that doesn’t happen within seconds but always takes a while

BS86 · October 22, 2020, 12:14pm

it was just that none of them had it, which is rather rare.

The mentioned patch-file is still missing on gitlab though

sawdoctor · October 22, 2020, 12:38pm

Happy to test it but I’m running testing branch. Soon as the patch-file is on gitlab I’ll build it (want to patch for nvidia as well)

nightmare-2021 · October 22, 2020, 1:35pm

I forgot to upload a patch to GitLab.

The following 3 patches are required for Futex:

0103-futex1.patch
0103-futex2.patch
0103-futex3.patch

The function of the individual patches is explained in detail in the link above (# 2)

sawdoctor · October 22, 2020, 1:36pm

Just got it thanks. Compiling now

BS86 · October 22, 2020, 4:31pm

well, some tools (like lutris) detect that the kernel is fsync - patched and allow to switch it on, but wine(staging) and proton don’t register it as compatible and fall back to esync.

nightmare-2021 · October 22, 2020, 5:30pm

Thanks for the feedback - so we’ve to wait for a working patch.

You can help us a lot by looking for a solution yourself. None of us use the function, so we cannot help here.

pux · October 22, 2020, 6:36pm

Here is my custom build with working fsync , project C scheduler & more + source

github.com

puxplaying/linux-gc-fsync/blob/master/5.9/PKGBUILD

# Maintainer: puxplaying
# Contributor: Leonidas Spyropoulos <artafinde AT gmail DOT com>
# Credit to graysky for shamelessly copying PKGBUILD from linux-ck

### BUILD OPTIONS
# Set these variables to ANYTHING that is not null to enable them

# Tweak kernel options prior to a build via nconfig
_makenconfig=

# Compile ONLY used modules to VASTLYreduce the number of modules built
# and the build time.
#
# To keep track of which modules are needed for your specific system/hardware,
# give module_db script a try: https://aur.archlinux.org/packages/modprobed-db
# This PKGBUILD read the database kept if it exists
#
# More at this wiki page ---> https://wiki.archlinux.org/index.php/Modprobed-db
_localmodcfg=

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github.com

Frogging-Family/linux-tkg/blob/master/linux59-tkg/linux59-tkg-patches/0007-v5.9-fsync.patch

From 7b5df0248ce255ef5b7204d65a7b3783ebb76a3d Mon Sep 17 00:00:00 2001
From: Gabriel Krisman Bertazi <krisman@collabora.com>
Date: Fri, 13 Dec 2019 11:08:02 -0300
Subject: [PATCH 1/2] futex: Implement mechanism to wait on any of several
 futexes
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This is a new futex operation, called FUTEX_WAIT_MULTIPLE, which allows
a thread to wait on several futexes at the same time, and be awoken by
any of them.  In a sense, it implements one of the features that was
supported by pooling on the old FUTEX_FD interface.

The use case lies in the Wine implementation of the Windows NT interface
WaitMultipleObjects. This Windows API function allows a thread to sleep
waiting on the first of a set of event sources (mutexes, timers, signal,
console input, etc) to signal.  Considering this is a primitive
synchronization operation for Windows applications, being able to quickly
signal events on the producer side, and quickly go to sleep on the

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nightmare-2021 · October 22, 2020, 8:49pm

I’m currently building version 5.9.1-3 with the patch.
Please test if it is online in unstable and give me feedback again.

I won’t update GitLab until it works.

Thanks

nightmare-2021 · October 22, 2020, 9:06pm

It’s online - all the mirrors have to do is syncen.

And just for information - on my infernal machine a build for the 5.9 takes near 20 minutes

BS86 · October 23, 2020, 11:28am

I am not using it. I just know how to test it because I was experimenting a bit with it in the past

Leprotto · October 23, 2020, 2:50pm

Tested now and it works.

iq20 · October 29, 2020, 9:39am

and linux-ck ???

linux-pds
linux-pf
linux-xanmod

linux-aarhus · February 9, 2022, 6:31pm