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Bug 2038794

Summary: Backport futex_waitv() from Linux 5.16
Product: Red Hat Enterprise Linux 9 Reporter: Neal Gompa <ngompa13>
Component: kernelAssignee: Joel Savitz <jsavitz>
kernel sub component: Locking QA Contact: Chunyu Hu <chuhu>
Status: CLOSED ERRATA Docs Contact:
Severity: unspecified    
Priority: unspecified CC: bstinson, carl, cschalle, davdunc, davide, jsavitz, jwboyer, llong, michel
Version: CentOS StreamKeywords: Triaged
Target Milestone: rcFlags: pm-rhel: mirror+
Target Release: 9.1   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: kernel-5.14.0-77.el9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 2086946 (view as bug list) Environment:
Last Closed: 2022-11-15 10:52:35 UTC Type: Feature Request
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2086946    

Description Neal Gompa 2022-01-10 06:33:12 UTC
Description of problem:
Linux 5.16 introduces the new futex_waitv(2) syscall, which allows to wait on multiple futexes with a single system call. This syscall is designed to work similarly to Windows NT's WaitForMultipleObjects API, which helps improve performance for applications running in Wine on Linux.

Please consider backporting this, so that Wine and other applications can take advantage of this functionality in RHEL 9.

Version-Release number of selected component (if applicable):
5.14.0-39.el9

Comment 1 Waiman Long 2022-01-10 15:19:23 UTC
The current RHEL9/Centos-Stream9 code base is based mostly on v5.15 with some 5.16 code mixed in. There is no current plan to backport the futex_waitv(2) code for the RHEL9.0 release as it will complicate our RT kernel work. Will get it into the next RHEL9.1 release instead.

Comment 2 Neal Gompa 2022-01-10 17:28:07 UTC
That's fine with me. I just wanted to get this on the radar so we have a timeline for it.

Comment 12 errata-xmlrpc 2022-11-15 10:52:35 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: kernel security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:8267