Linaro-mm-sig

linaro-mm-sig@lists.linaro.org

5 participants
6602 discussions

[PATCH v2] dma-fence: Clarify external lock use case in dma_fence_init() docs

by Maíra Canal

The kerneldoc comment on dma_fence_init() and dma_fence_init64() describe the legacy reason to pass an external lock as a need to prevent multiple fences "from signaling out of order". However, this wording is a bit misleading: a shared spinlock does not (and cannot) prevent the signaler from signaling out of order. Signaling order is the driver's responsibility regardless of whether the lock is shared or per-fence. What a shared lock actually provides is serialization of signaling and observation across fences in a given context, so that observers never see a later fence signaled while an earlier one is not. Reword both comments to describe this more accurately. Signed-off-by: Maíra Canal <mcanal(a)igalia.com> --- v1 -> v2: https://lore.kernel.org/dri-devel/20260411185756.1887119-4-mcanal@igalia.co… - Be more explicit about not allowing new users to use an external lock. - De-duplicate the explanation in dma_fence_init64() by pointing to the dma_fence_init() documentation. --- drivers/dma-buf/dma-fence.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index 1c1eaecaf1b0..63b349ba9a34 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -1102,9 +1102,11 @@ __dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, * context and seqno are used for easy comparison between fences, allowing * to check which fence is later by simply using dma_fence_later(). * - * It is strongly discouraged to provide an external lock because this couples - * lock and fence life time. This is only allowed for legacy use cases when - * multiple fences need to be prevented from signaling out of order. + * External locks are a relic from legacy use cases that needed a shared lock + * to serialize signaling and observation of fences within a context, so that + * observers never see a later fence signaled while an earlier one isn't. New + * users MUST NOT use external locks, as they force the issuer to outlive all + * fences that reference the lock. */ void dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, @@ -1129,9 +1131,8 @@ EXPORT_SYMBOL(dma_fence_init); * Context and seqno are used for easy comparison between fences, allowing * to check which fence is later by simply using dma_fence_later(). * - * It is strongly discouraged to provide an external lock because this couples - * lock and fence life time. This is only allowed for legacy use cases when - * multiple fences need to be prevented from signaling out of order. + * New users MUST NOT use external locks. Check the documentation in + * dma_fence_init() to understand the motives behind the legacy use cases. */ void dma_fence_init64(struct dma_fence *fence, const struct dma_fence_ops *ops, -- 2.53.0

2 weeks

Abortion Pills For Sale In Oman[][][]<>+971568547782[][][]<>, Mifepristone And Misoprostol Pills Available In Oman

by namudigumoraka29＠gmail.com

Abortion Pills For Sale In Oman[][][]<>+971568547782[][][]<>, Mifepristone And Misoprostol Pills Available In OmanMtp Kit For Sale In Al Ain [][][][][][]<>+971568547782[][][][][][]<>( Pfizer ) Mtp Kit Available In Al Ain, Where Can I Buy Mtp Kit In Al AinKuwait +971568547782 Abortion Tablets Available In Qatar +971568547782 Abortion Pills For Sale In Kuwait City +971568547782 Abortion Pills For Sale In Al Asimah +971568547782 Abortion Pills For Sale In Al Ahmadi +971568547782 Abortion Pills For Sale In Hawalli +971568547782 Abortion Pills For Sale In Al Farwaniyah +971568547782 Abortion Pills For Sale In Al Jahra +971568547782 Abortion Pills For Sale In Salmiya +971568547782 Abortion Pills For Sale In Sabah as Salim +971568547782 Abortion Pills For Sale In Mangaf +971568547782 Abortion Pills For Sale In Fintas +971568547782 Abortion Pills For Sale In Dubai +971568547782 Abortion Pills For Sale In Abu Dhabi +971568547782 Abortion Pills For Sale In Sharjah +971568547782 Abortion Pills For Sale In Al Ain +971568547782 Abortion Pills For Sale In Ajman +971568547782 Abortion Pills For Sale In Fujairaih +971568547782 Abortion Pills For Sale In Ras Al Khaimah +971568547782 Abortion Pills For Sale In Doha +971568547782 Abortion Pills For Sale In Qatar +971568547782 Abortion Pills For Sale In Muscat +971568547782 Abortion Pills For Sale In Oman

2 weeks

Abortion Pills For Sale In Muscat[][][]<>+971568547782[][][]<>, Mifepristone And Misoprostol Pills Available In Muscat

by namudigumoraka29＠gmail.com

Abortion Pills For Sale In Muscat[][][]<>+971568547782[][][]<>, Mifepristone And Misoprostol Pills Available In MuscatMtp Kit For Sale In Al Ain [][][][][][]<>+971568547782[][][][][][]<>( Pfizer ) Mtp Kit Available In Al Ain, Where Can I Buy Mtp Kit In Al AinKuwait +971568547782 Abortion Tablets Available In Qatar +971568547782 Abortion Pills For Sale In Kuwait City +971568547782 Abortion Pills For Sale In Al Asimah +971568547782 Abortion Pills For Sale In Al Ahmadi +971568547782 Abortion Pills For Sale In Hawalli +971568547782 Abortion Pills For Sale In Al Farwaniyah +971568547782 Abortion Pills For Sale In Al Jahra +971568547782 Abortion Pills For Sale In Salmiya +971568547782 Abortion Pills For Sale In Sabah as Salim +971568547782 Abortion Pills For Sale In Mangaf +971568547782 Abortion Pills For Sale In Fintas +971568547782 Abortion Pills For Sale In Dubai +971568547782 Abortion Pills For Sale In Abu Dhabi +971568547782 Abortion Pills For Sale In Sharjah +971568547782 Abortion Pills For Sale In Al Ain +971568547782 Abortion Pills For Sale In Ajman +971568547782 Abortion Pills For Sale In Fujairaih +971568547782 Abortion Pills For Sale In Ras Al Khaimah +971568547782 Abortion Pills For Sale In Doha +971568547782 Abortion Pills For Sale In Qatar +971568547782 Abortion Pills For Sale In Muscat +971568547782 Abortion Pills For Sale In Oman

2 weeks

Abortion Pills For Sale In Umm Al Quwain,[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In Umm Al Quwain

by namudigumoraka29＠gmail.com

Abortion Pills For Sale In Umm Al Quwain,[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In Umm Al QuwainMtp Kit For Sale In Al Ain [][][][][][]<>+971568547782[][][][][][]<>( Pfizer ) Mtp Kit Available In Al Ain, Where Can I Buy Mtp Kit In Al AinKuwait +971568547782 Abortion Tablets Available In Qatar +971568547782 Abortion Pills For Sale In Kuwait City +971568547782 Abortion Pills For Sale In Al Asimah +971568547782 Abortion Pills For Sale In Al Ahmadi +971568547782 Abortion Pills For Sale In Hawalli +971568547782 Abortion Pills For Sale In Al Farwaniyah +971568547782 Abortion Pills For Sale In Al Jahra +971568547782 Abortion Pills For Sale In Salmiya +971568547782 Abortion Pills For Sale In Sabah as Salim +971568547782 Abortion Pills For Sale In Mangaf +971568547782 Abortion Pills For Sale In Fintas +971568547782 Abortion Pills For Sale In Dubai +971568547782 Abortion Pills For Sale In Abu Dhabi +971568547782 Abortion Pills For Sale In Sharjah +971568547782 Abortion Pills For Sale In Al Ain +971568547782 Abortion Pills For Sale In Ajman +971568547782 Abortion Pills For Sale In Fujairaih +971568547782 Abortion Pills For Sale In Ras Al Khaimah +971568547782 Abortion Pills For Sale In Doha +971568547782 Abortion Pills For Sale In Qatar +971568547782 Abortion Pills For Sale In Muscat +971568547782 Abortion Pills For Sale In Oman

2 weeks

Abortion Pills For Sale In Fujairah,[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In Fujairah

by namudigumoraka29＠gmail.com

Abortion Pills For Sale In Fujairah,[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In FujairahMtp Kit For Sale In Al Ain [][][][][][]<>+971568547782[][][][][][]<>( Pfizer ) Mtp Kit Available In Al Ain, Where Can I Buy Mtp Kit In Al AinKuwait +971568547782 Abortion Tablets Available In Qatar +971568547782 Abortion Pills For Sale In Kuwait City +971568547782 Abortion Pills For Sale In Al Asimah +971568547782 Abortion Pills For Sale In Al Ahmadi +971568547782 Abortion Pills For Sale In Hawalli +971568547782 Abortion Pills For Sale In Al Farwaniyah +971568547782 Abortion Pills For Sale In Al Jahra +971568547782 Abortion Pills For Sale In Salmiya +971568547782 Abortion Pills For Sale In Sabah as Salim +971568547782 Abortion Pills For Sale In Mangaf +971568547782 Abortion Pills For Sale In Fintas +971568547782 Abortion Pills For Sale In Dubai +971568547782 Abortion Pills For Sale In Abu Dhabi +971568547782 Abortion Pills For Sale In Sharjah +971568547782 Abortion Pills For Sale In Al Ain +971568547782 Abortion Pills For Sale In Ajman +971568547782 Abortion Pills For Sale In Fujairaih +971568547782 Abortion Pills For Sale In Ras Al Khaimah +971568547782 Abortion Pills For Sale In Doha +971568547782 Abortion Pills For Sale In Qatar +971568547782 Abortion Pills For Sale In Muscat +971568547782 Abortion Pills For Sale In Oman

2 weeks

Abortion Pills For Sale In Ras Al Khaimah[][][]<>+971568547782[][][]<>, Mifepristone And Misoprostol Pills Available In Ras Al Khaimah

by namudigumoraka29＠gmail.com

Abortion Pills For Sale In Ras Al Khaimah[][][]<>+971568547782[][][]<>, Mifepristone And Misoprostol Pills Available In Ras Al KhaimahMtp Kit For Sale In Al Ain [][][][][][]<>+971568547782[][][][][][]<>( Pfizer ) Mtp Kit Available In Al Ain, Where Can I Buy Mtp Kit In Al AinKuwait +971568547782 Abortion Tablets Available In Qatar +971568547782 Abortion Pills For Sale In Kuwait City +971568547782 Abortion Pills For Sale In Al Asimah +971568547782 Abortion Pills For Sale In Al Ahmadi +971568547782 Abortion Pills For Sale In Hawalli +971568547782 Abortion Pills For Sale In Al Farwaniyah +971568547782 Abortion Pills For Sale In Al Jahra +971568547782 Abortion Pills For Sale In Salmiya +971568547782 Abortion Pills For Sale In Sabah as Salim +971568547782 Abortion Pills For Sale In Mangaf +971568547782 Abortion Pills For Sale In Fintas +971568547782 Abortion Pills For Sale In Dubai +971568547782 Abortion Pills For Sale In Abu Dhabi +971568547782 Abortion Pills For Sale In Sharjah +971568547782 Abortion Pills For Sale In Al Ain +971568547782 Abortion Pills For Sale In Ajman +971568547782 Abortion Pills For Sale In Fujairaih +971568547782 Abortion Pills For Sale In Ras Al Khaimah +971568547782 Abortion Pills For Sale In Doha +971568547782 Abortion Pills For Sale In Qatar +971568547782 Abortion Pills For Sale In Muscat +971568547782 Abortion Pills For Sale In Oman

2 weeks

Abortion Pills For Sale In Ajman[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In Ajman

by namudigumoraka29＠gmail.com

Abortion Pills For Sale In Ajman[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In AjmanMtp Kit For Sale In Al Ain [][][][][][]<>+971568547782[][][][][][]<>( Pfizer ) Mtp Kit Available In Al Ain, Where Can I Buy Mtp Kit In Al AinKuwait +971568547782 Abortion Tablets Available In Qatar +971568547782 Abortion Pills For Sale In Kuwait City +971568547782 Abortion Pills For Sale In Al Asimah +971568547782 Abortion Pills For Sale In Al Ahmadi +971568547782 Abortion Pills For Sale In Hawalli +971568547782 Abortion Pills For Sale In Al Farwaniyah +971568547782 Abortion Pills For Sale In Al Jahra +971568547782 Abortion Pills For Sale In Salmiya +971568547782 Abortion Pills For Sale In Sabah as Salim +971568547782 Abortion Pills For Sale In Mangaf +971568547782 Abortion Pills For Sale In Fintas +971568547782 Abortion Pills For Sale In Dubai +971568547782 Abortion Pills For Sale In Abu Dhabi +971568547782 Abortion Pills For Sale In Sharjah +971568547782 Abortion Pills For Sale In Al Ain +971568547782 Abortion Pills For Sale In Ajman +971568547782 Abortion Pills For Sale In Fujairaih +971568547782 Abortion Pills For Sale In Ras Al Khaimah +971568547782 Abortion Pills For Sale In Doha +971568547782 Abortion Pills For Sale In Qatar +971568547782 Abortion Pills For Sale In Muscat +971568547782 Abortion Pills For Sale In Oman

2 weeks

Abortion Pills For Sale In Al Ain[][][]<>+971568547782[][][]<>, Mifepristone And Misoprostol Pills Available In Al Ain

by namudigumoraka29＠gmail.com

Abortion Pills For Sale In Al Ain[][][]<>+971568547782[][][]<>, Mifepristone And Misoprostol Pills Available In Al AinMtp Kit For Sale In Al Ain [][][][][][]<>+971568547782[][][][][][]<>( Pfizer ) Mtp Kit Available In Al Ain, Where Can I Buy Mtp Kit In Al AinKuwait +971568547782 Abortion Tablets Available In Qatar +971568547782 Abortion Pills For Sale In Kuwait City +971568547782 Abortion Pills For Sale In Al Asimah +971568547782 Abortion Pills For Sale In Al Ahmadi +971568547782 Abortion Pills For Sale In Hawalli +971568547782 Abortion Pills For Sale In Al Farwaniyah +971568547782 Abortion Pills For Sale In Al Jahra +971568547782 Abortion Pills For Sale In Salmiya +971568547782 Abortion Pills For Sale In Sabah as Salim +971568547782 Abortion Pills For Sale In Mangaf +971568547782 Abortion Pills For Sale In Fintas +971568547782 Abortion Pills For Sale In Dubai +971568547782 Abortion Pills For Sale In Abu Dhabi +971568547782 Abortion Pills For Sale In Sharjah +971568547782 Abortion Pills For Sale In Al Ain +971568547782 Abortion Pills For Sale In Ajman +971568547782 Abortion Pills For Sale In Fujairaih +971568547782 Abortion Pills For Sale In Ras Al Khaimah +971568547782 Abortion Pills For Sale In Doha +971568547782 Abortion Pills For Sale In Qatar +971568547782 Abortion Pills For Sale In Muscat +971568547782 Abortion Pills For Sale In Oman

2 weeks

Abortion Pills For Sale In Sharjah,[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In Sharjah

by namudigumoraka29＠gmail.com

Abortion Pills For Sale In Sharjah,[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In SharjahMtp Kit For Sale In Al Ain [][][][][][]<>+971568547782[][][][][][]<>( Pfizer ) Mtp Kit Available In Al Ain, Where Can I Buy Mtp Kit In Al AinKuwait +971568547782 Abortion Tablets Available In Qatar +971568547782 Abortion Pills For Sale In Kuwait City +971568547782 Abortion Pills For Sale In Al Asimah +971568547782 Abortion Pills For Sale In Al Ahmadi +971568547782 Abortion Pills For Sale In Hawalli +971568547782 Abortion Pills For Sale In Al Farwaniyah +971568547782 Abortion Pills For Sale In Al Jahra +971568547782 Abortion Pills For Sale In Salmiya +971568547782 Abortion Pills For Sale In Sabah as Salim +971568547782 Abortion Pills For Sale In Mangaf +971568547782 Abortion Pills For Sale In Fintas +971568547782 Abortion Pills For Sale In Dubai +971568547782 Abortion Pills For Sale In Abu Dhabi +971568547782 Abortion Pills For Sale In Sharjah +971568547782 Abortion Pills For Sale In Al Ain +971568547782 Abortion Pills For Sale In Ajman +971568547782 Abortion Pills For Sale In Fujairaih +971568547782 Abortion Pills For Sale In Ras Al Khaimah +971568547782 Abortion Pills For Sale In Doha +971568547782 Abortion Pills For Sale In Qatar +971568547782 Abortion Pills For Sale In Muscat +971568547782 Abortion Pills For Sale In Oman

2 weeks

Abortion Pills For Sale In Dubai,[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In Dubai

by namudigumoraka29＠gmail.com

Abortion Pills For Sale In Dubai,[][][]<>+971568547782[][][]<> Mifepristone And Misoprostol Pills Available In DubaiMtp Kit For Sale In Al Ain [][][][][][]<>+971568547782[][][][][][]<>( Pfizer ) Mtp Kit Available In Al Ain, Where Can I Buy Mtp Kit In Al AinKuwait +971568547782 Abortion Tablets Available In Qatar +971568547782 Abortion Pills For Sale In Kuwait City +971568547782 Abortion Pills For Sale In Al Asimah +971568547782 Abortion Pills For Sale In Al Ahmadi +971568547782 Abortion Pills For Sale In Hawalli +971568547782 Abortion Pills For Sale In Al Farwaniyah +971568547782 Abortion Pills For Sale In Al Jahra +971568547782 Abortion Pills For Sale In Salmiya +971568547782 Abortion Pills For Sale In Sabah as Salim +971568547782 Abortion Pills For Sale In Mangaf +971568547782 Abortion Pills For Sale In Fintas +971568547782 Abortion Pills For Sale In Dubai +971568547782 Abortion Pills For Sale In Abu Dhabi +971568547782 Abortion Pills For Sale In Sharjah +971568547782 Abortion Pills For Sale In Al Ain +971568547782 Abortion Pills For Sale In Ajman +971568547782 Abortion Pills For Sale In Fujairaih +971568547782 Abortion Pills For Sale In Ras Al Khaimah +971568547782 Abortion Pills For Sale In Doha +971568547782 Abortion Pills For Sale In Qatar +971568547782 Abortion Pills For Sale In Muscat +971568547782 Abortion Pills For Sale In Oman

2 weeks

← Newer
1
...
8
9
10
11
12
13
14
...
661
Older →

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

Linaro-mm-sig