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Bug 1421810

Summary: [rt] implement the simple work queue from upstream PREEMPT_RT series
Product: Red Hat Enterprise Linux 7 Reporter: Clark Williams <williams>
Component: kernel-rtAssignee: Clark Williams <williams>
kernel-rt sub component: Memory Management QA Contact: Jiri Kastner <jkastner>
Status: CLOSED ERRATA Docs Contact:
Severity: medium    
Priority: medium CC: bhu, lgoncalv
Version: 7.4   
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-01 19:00:29 UTC Type: Bug
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: 1353018, 1410158    
Attachments:
Description Flags
work-simple-Simple-work-queue-implemenation.patch
none
fs-aio-simple-simple-work.patch
none
genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch
none
hrtimer-Move-schedule_work-call-to-helper-thread.patch
none
0001-wait.h-include-atomic.h.patch
none
0002-work-simple-Simple-work-queue-implemenation.patch
none
0003-Revert-genirq-do-not-invoke-the-affinity-callback-vi.patch
none
0004-genirq-Do-not-invoke-the-affinity-callback-via-a-wor.patch
none
0005-Revert-hrtimer-Move-schedule_work-call-to-helper-thr.patch
none
0006-hrtimer-Move-schedule_work-call-to-helper-thread.patch none

Description Clark Williams 2017-02-13 18:15:40 UTC 
Pull in simple work queue
Comment 1 Clark Williams 2017-02-13 18:17:25 UTC 
Created attachment 1249982 [details]
work-simple-Simple-work-queue-implemenation.patch

4.8.15-rt10 upstream PREEMPT_RT implementation of swork queues
Comment 2 Clark Williams 2017-02-13 18:18:11 UTC 
Created attachment 1249983 [details]
fs-aio-simple-simple-work.patch
Comment 3 Clark Williams 2017-02-13 18:18:55 UTC 
Created attachment 1249984 [details]
genirq-do-not-invoke-the-affinity-callback-via-a-wor.patch
Comment 4 Clark Williams 2017-02-13 18:19:58 UTC 
Created attachment 1249985 [details]
hrtimer-Move-schedule_work-call-to-helper-thread.patch
Comment 5 Clark Williams 2017-02-14 15:18:46 UTC 
Created attachment 1250277 [details]
0001-wait.h-include-atomic.h.patch

ARM only fix
Comment 6 Clark Williams 2017-02-14 15:19:36 UTC 
Created attachment 1250278 [details]
0002-work-simple-Simple-work-queue-implemenation.patch

Implement swork queues on RHEL-RT 7.4
Comment 7 Clark Williams 2017-02-14 15:20:32 UTC 
Created attachment 1250280 [details]
0003-Revert-genirq-do-not-invoke-the-affinity-callback-vi.patch

Revert helper thread irq fix
Comment 8 Clark Williams 2017-02-14 15:21:18 UTC 
Created attachment 1250281 [details]
0004-genirq-Do-not-invoke-the-affinity-callback-via-a-wor.patch

Implement genirq locking fix using simple-workqueue
Comment 9 Clark Williams 2017-02-14 15:21:57 UTC 
Created attachment 1250282 [details]
0005-Revert-hrtimer-Move-schedule_work-call-to-helper-thr.patch

revert helper thread fix to hrtimer locking issue
Comment 10 Clark Williams 2017-02-14 15:23:00 UTC 
Created attachment 1250283 [details]
0006-hrtimer-Move-schedule_work-call-to-helper-thread.patch

Implement hrtimer locking fix with simple-workqueue
Comment 11 Clark Williams 2017-02-14 15:25:07 UTC 
Scratch build against -563 7.4 kernel with above series and new swait code ran rteval for 12 hours with passing latency. 

https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=12537155
Comment 16 errata-xmlrpc 2017-08-01 19:00:29 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, 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-2017:2077
Comment 17 errata-xmlrpc 2017-08-02 00:24:28 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, 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-2017:2077