Bug 2232135

Summary:	Kernel config option CONFIG_DMABUF_SYSFS_STATS should be disabled due to performance issues & it being depricated
Product:	[Fedora] Fedora	Reporter:	Jerone Young <jyoung>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED COMPLETED	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	38	CC:	acaringi, adscvr, airlied, alciregi, bskeggs, hdegoede, hpa, jarod, josef, kernel-maint, lgoncalv, linville, masami256, mchehab, ptalbert, steved
Target Milestone:	---
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Hardware:	All
OS:	Linux
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Last Closed:	2023-08-16 01:27:11 UTC	Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Jerone Young 2023-08-15 14:29:51 UTC

1. Please describe the problem:

CONFIG_DMABUF_SYSFS_STATS is enabled in Fedora. Though it has
- Know performance issues
- Deprecated in the kernel

The following is from the Kconfig:
"This option is deprecated and should sooner or later be removed. Android is the only user of this and it turned out that this resulted in quite some performance problems."


2. What is the Version-Release number of the kernel:
6.4.10-200.fc38.x86_64



Reproducible: Always

Comment 1 Jerone Young 2023-08-16 01:26:45 UTC

It looks like this was actually fixed recently.

https://gitlab.com/cki-project/kernel-ark/-/blob/os-build/redhat/configs/fedora/generic/CONFIG_DMABUF_SYSFS_STATS?ref_type=heads

Comment 2 Fedora Update System 2023-08-16 20:34:52 UTC

FEDORA-2023-1ccaad9e2e has been submitted as an update to Fedora 38. https://bodhi.fedoraproject.org/updates/FEDORA-2023-1ccaad9e2e

Comment 3 Fedora Update System 2023-08-16 20:34:56 UTC

FEDORA-2023-cb2ef9c22c has been submitted as an update to Fedora 37. https://bodhi.fedoraproject.org/updates/FEDORA-2023-cb2ef9c22c

Comment 4 Fedora Update System 2023-08-17 01:30:54 UTC

FEDORA-2023-1ccaad9e2e has been pushed to the Fedora 38 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2023-1ccaad9e2e`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2023-1ccaad9e2e

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2023-08-17 01:32:37 UTC

FEDORA-2023-cb2ef9c22c has been pushed to the Fedora 37 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2023-cb2ef9c22c`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2023-cb2ef9c22c

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.