Linaro-mm-sig April 2026

linaro-mm-sig@lists.linaro.org

91 participants
213 discussions

ZEUS Crypt-o Rec-overy Services: the Worldwide Leading Crypt-o Recovery Experts in 2026

by onwekingsley021＠gmail.com

ZEUS Crypt-o Recover-y Services truly came through for me at a time when I felt completely hopeless. After losing my Bitcoin to a scam, I thought my -were gone forever. That's when I discovered ZEUS, and from the very first interaction, I knew I was in capable hands. Their team was incredibly responsive, professional, and knowledgeable about bloc-kchain technology and crypt-o investigations. - They took the time to understand my situation in detail, explained every step of the recov-ery process clearly, and provided regular updates that kept me reassured. What impressed me most was their persistence and dedication—they didn't give up until real progress was made. Thanks to their expertise and advanced tracking techniques, I was able to recover a significant portion of my lo-st fu-nds. ZEUS Cryp-to Recove-ry Services didn't just help me financially—they restored my confidence and peace of mind. If you've been a victim of crypt-o fra-ud or lo-st ac-cess to your di-gital asse-ts, I highly recommend reaching out to them. Contact ZEUS Cryp-to Recove-ry Services:

1 month, 1 week

[PATCH] dma-buf: fix UAF in dma_buf_put() tracepoint

by Andi Shyti

dma_buf_put() may drop the final file reference via fput(), which can free the dma-buf. The new tracepoint invocation was added after fput(), and DMA_BUF_TRACE() dereferences dmabuf and takes dmabuf->name_lock. This leads to a use-after-free on the final put, visible for example as a spinlock bad magic fault on a poisoned 0x6b6b6b... lock. Move the dma_buf_put tracepoint before fput(). Reported-by: Janusz Krzysztofik <janusz.krzysztofik(a)linux.intel.com> Fixes: 281a22631423 ("dma-buf: add some tracepoints to debug.") Signed-off-by: Andi Shyti <andi.shyti(a)linux.intel.com> Cc: Xiang Gao <gaoxiang17(a)xiaomi.com> Cc: Christian König <christian.koenig(a)amd.com> --- Hi, I believe this patch fixes the issue reported by Janusz, I haven't tested it. Perhaps we can add some more checks in DMA_BUF_TRACE. Thanks, Andi drivers/dma-buf/dma-buf.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index a202a308c079..b72932c57cb9 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -845,9 +845,8 @@ void dma_buf_put(struct dma_buf *dmabuf) if (WARN_ON(!dmabuf || !dmabuf->file)) return; - fput(dmabuf->file); - DMA_BUF_TRACE(trace_dma_buf_put, dmabuf); + fput(dmabuf->file); } EXPORT_SYMBOL_NS_GPL(dma_buf_put, "DMA_BUF"); -- 2.53.0

1 month, 1 week

[PATCH v6 6/8] drm/amdgpu: rename amdgpu_fill_buffer as amdgpu_ttm_clear_buffer

by Pierre-Eric Pelloux-Prayer

This is the only use case for this function. --- v2: amdgpu_ttm_clear_buffer instead of amdgpu_clear_buffer --- Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer(a)amd.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 12 +++++------ drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 23 ++++++++++------------ drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 13 ++++++------ 3 files changed, 22 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index bdeca80cd77d..4dd7c712b8c3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -717,9 +717,9 @@ int amdgpu_bo_create(struct amdgpu_device *adev, bo->tbo.resource->mem_type == TTM_PL_VRAM) { struct dma_fence *fence; - r = amdgpu_fill_buffer(amdgpu_ttm_next_clear_entity(adev), - bo, 0, bo->tbo.base.resv, &fence, - true, AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER); + r = amdgpu_ttm_clear_buffer(amdgpu_ttm_next_clear_entity(adev), + bo, bo->tbo.base.resv, &fence, + true, AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER); if (unlikely(r)) goto fail_unreserve; @@ -1329,9 +1329,9 @@ void amdgpu_bo_release_notify(struct ttm_buffer_object *bo) if (r) goto out; - r = amdgpu_fill_buffer(amdgpu_ttm_next_clear_entity(adev), - abo, 0, &bo->base._resv, &fence, - false, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE); + r = amdgpu_ttm_clear_buffer(amdgpu_ttm_next_clear_entity(adev), + abo, &bo->base._resv, &fence, + false, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE); if (WARN_ON(r)) goto out; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 7af11623263d..8d778cbce1aa 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -417,8 +417,8 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo, if (old_mem->mem_type == TTM_PL_VRAM && (abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE)) { struct dma_fence *wipe_fence = NULL; - r = amdgpu_fill_buffer(entity, abo, 0, NULL, &wipe_fence, - false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT); + r = amdgpu_ttm_clear_buffer(entity, abo, NULL, &wipe_fence, + false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT); if (r) { goto error; } else if (wipe_fence) { @@ -2573,26 +2573,23 @@ static int amdgpu_ttm_fill_mem(struct amdgpu_device *adev, } /** - * amdgpu_fill_buffer - fill a buffer with a given value + * amdgpu_ttm_clear_buffer - fill a buffer with 0 * @entity: entity to use * @bo: the bo to fill - * @src_data: the value to set * @resv: fences contained in this reservation will be used as dependencies. * @out_fence: the fence from the last clear will be stored here. It might be * NULL if no job was run. - * @dependency: optional input dependency fence. * @consider_clear_status: true if region reported as cleared by amdgpu_res_cleared() * are skipped. * @k_job_id: trace id * */ -int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, - struct amdgpu_bo *bo, - uint32_t src_data, - struct dma_resv *resv, - struct dma_fence **out_fence, - bool consider_clear_status, - u64 k_job_id) +int amdgpu_ttm_clear_buffer(struct amdgpu_ttm_buffer_entity *entity, + struct amdgpu_bo *bo, + struct dma_resv *resv, + struct dma_fence **out_fence, + bool consider_clear_status, + u64 k_job_id) { struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); struct dma_fence *fence = NULL; @@ -2623,7 +2620,7 @@ int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, goto error; r = amdgpu_ttm_fill_mem(adev, entity, - src_data, to, cur_size, resv, + 0, to, cur_size, resv, &next, true, k_job_id); if (r) goto error; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h index 436a3e09a178..d7b14d5cac77 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h @@ -187,13 +187,12 @@ int amdgpu_copy_buffer(struct amdgpu_device *adev, struct dma_resv *resv, struct dma_fence **fence, bool vm_needs_flush, uint32_t copy_flags); -int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, - struct amdgpu_bo *bo, - uint32_t src_data, - struct dma_resv *resv, - struct dma_fence **out_fence, - bool consider_clear_status, - u64 k_job_id); +int amdgpu_ttm_clear_buffer(struct amdgpu_ttm_buffer_entity *entity, + struct amdgpu_bo *bo, + struct dma_resv *resv, + struct dma_fence **out_fence, + bool consider_clear_status, + u64 k_job_id); struct amdgpu_ttm_buffer_entity *amdgpu_ttm_next_clear_entity(struct amdgpu_device *adev); int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo); -- 2.43.0

1 month, 1 week

[PATCH v6 5/8] drm/amdgpu: get rid of amdgpu_ttm_clear_buffer

by Pierre-Eric Pelloux-Prayer

It's doing the same thing as amdgpu_fill_buffer(src_data=0), so drop it. The only caveat is that amdgpu_res_cleared() return value is only valid right after allocation. --- v2: introduce new "bool consider_clear_status" arg v6: dont pass a NULL resv when calling amdgpu_fill_buffer from amdgpu_bo_create --- Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer(a)amd.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 16 ++-- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 88 +++++----------------- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 6 +- 3 files changed, 32 insertions(+), 78 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 66c20dd46d12..bdeca80cd77d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -717,13 +717,17 @@ int amdgpu_bo_create(struct amdgpu_device *adev, bo->tbo.resource->mem_type == TTM_PL_VRAM) { struct dma_fence *fence; - r = amdgpu_ttm_clear_buffer(bo, bo->tbo.base.resv, &fence); + r = amdgpu_fill_buffer(amdgpu_ttm_next_clear_entity(adev), + bo, 0, bo->tbo.base.resv, &fence, + true, AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER); if (unlikely(r)) goto fail_unreserve; - dma_resv_add_fence(bo->tbo.base.resv, fence, - DMA_RESV_USAGE_KERNEL); - dma_fence_put(fence); + if (fence) { + dma_resv_add_fence(bo->tbo.base.resv, fence, + DMA_RESV_USAGE_KERNEL); + dma_fence_put(fence); + } } if (!bp->resv) amdgpu_bo_unreserve(bo); @@ -1326,8 +1330,8 @@ void amdgpu_bo_release_notify(struct ttm_buffer_object *bo) goto out; r = amdgpu_fill_buffer(amdgpu_ttm_next_clear_entity(adev), - abo, 0, &bo->base._resv, - &fence, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE); + abo, 0, &bo->base._resv, &fence, + false, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE); if (WARN_ON(r)) goto out; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 7b92f240eea7..7af11623263d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -418,7 +418,7 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo, (abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE)) { struct dma_fence *wipe_fence = NULL; r = amdgpu_fill_buffer(entity, abo, 0, NULL, &wipe_fence, - AMDGPU_KERNEL_JOB_ID_MOVE_BLIT); + false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT); if (r) { goto error; } else if (wipe_fence) { @@ -2573,76 +2573,25 @@ static int amdgpu_ttm_fill_mem(struct amdgpu_device *adev, } /** - * amdgpu_ttm_clear_buffer - clear memory buffers - * @bo: amdgpu buffer object - * @resv: reservation object - * @fence: dma_fence associated with the operation + * amdgpu_fill_buffer - fill a buffer with a given value + * @entity: entity to use + * @bo: the bo to fill + * @src_data: the value to set + * @resv: fences contained in this reservation will be used as dependencies. + * @out_fence: the fence from the last clear will be stored here. It might be + * NULL if no job was run. + * @dependency: optional input dependency fence. + * @consider_clear_status: true if region reported as cleared by amdgpu_res_cleared() + * are skipped. + * @k_job_id: trace id * - * Clear the memory buffer resource. - * - * Returns: - * 0 for success or a negative error code on failure. */ -int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo, - struct dma_resv *resv, - struct dma_fence **fence) -{ - struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); - struct amdgpu_ttm_buffer_entity *entity; - struct amdgpu_res_cursor cursor; - u64 addr; - int r = 0; - - if (!adev->mman.buffer_funcs_enabled) - return -EINVAL; - - if (!fence) - return -EINVAL; - entity = &adev->mman.clear_entities[0]; - *fence = dma_fence_get_stub(); - - amdgpu_res_first(bo->tbo.resource, 0, amdgpu_bo_size(bo), &cursor); - - mutex_lock(&entity->lock); - while (cursor.remaining) { - struct dma_fence *next = NULL; - u64 size; - - if (amdgpu_res_cleared(&cursor)) { - amdgpu_res_next(&cursor, cursor.size); - continue; - } - - /* Never clear more than 256MiB at once to avoid timeouts */ - size = min(cursor.size, 256ULL << 20); - - r = amdgpu_ttm_map_buffer(entity, &bo->tbo, bo->tbo.resource, &cursor, - 0, false, &size, &addr); - if (r) - goto err; - - r = amdgpu_ttm_fill_mem(adev, entity, 0, addr, size, resv, - &next, true, - AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER); - if (r) - goto err; - - dma_fence_put(*fence); - *fence = next; - - amdgpu_res_next(&cursor, size); - } -err: - mutex_unlock(&entity->lock); - - return r; -} - int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, struct amdgpu_bo *bo, uint32_t src_data, struct dma_resv *resv, - struct dma_fence **f, + struct dma_fence **out_fence, + bool consider_clear_status, u64 k_job_id) { struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); @@ -2660,6 +2609,11 @@ int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, struct dma_fence *next; uint64_t cur_size, to; + if (consider_clear_status && amdgpu_res_cleared(&dst)) { + amdgpu_res_next(&dst, dst.size); + continue; + } + /* Never fill more than 256MiB at once to avoid timeouts */ cur_size = min(dst.size, 256ULL << 20); @@ -2681,9 +2635,7 @@ int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, } error: mutex_unlock(&entity->lock); - if (f) - *f = dma_fence_get(fence); - dma_fence_put(fence); + *out_fence = fence; return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h index a6249252948b..436a3e09a178 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h @@ -187,14 +187,12 @@ int amdgpu_copy_buffer(struct amdgpu_device *adev, struct dma_resv *resv, struct dma_fence **fence, bool vm_needs_flush, uint32_t copy_flags); -int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo, - struct dma_resv *resv, - struct dma_fence **fence); int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, struct amdgpu_bo *bo, uint32_t src_data, struct dma_resv *resv, - struct dma_fence **f, + struct dma_fence **out_fence, + bool consider_clear_status, u64 k_job_id); struct amdgpu_ttm_buffer_entity *amdgpu_ttm_next_clear_entity(struct amdgpu_device *adev); -- 2.43.0

1 month, 1 week

Watsap +16465806302. Buy registered driving license. Buy 100% undetectable counterfeit euro.

by markcarlson70＠gmail.com

Watsap +16465806302. Buy registered driving license. Buy 100% undetectable counterfeit euro. darkwebdocuments.net. dollars, pounds. nationality certificate online. We deal and specialize in helping you to get high-quality Biometric documents, registered PASSPORT, DRIVING LICENSE, ID CARD, VISA, SSN TOEFL, IELTS, IDP, ESOL, GMAT CELTA/DELTA, DEGREE, DIPLOMAS & other Certificates. 100% undetectable counterfeit euros, pesos, dollars, pounds, and many other currencies. Buy Clone credit cards, credit card clone. https://darkwebdocuments.net/driving-classes-adults/ https://darkwebdocuments.net/ - WhatsApp.....................+13524051163 WhatsApp.....................+16465806302 Contact..............darkwebdocuments(a)gmail.com Buy SSD Chemical solution for cleaning all types of banknotes. We are the best and Unique producer of HIGH-QUALITY Undetectable Counterfeit Banknotes, with billions of our products circulating worldwide. Tel: +16465806302 We supply only original high-quality counterfeit currency NOTES to all countries worldwide. THESE BANKNOTES ARE HIGHLY INDISTINGUISHABLE FROM THE TOUCH AND THE FEEL OF THE HANDS AND THE LOOK OF THE NAKED EYES. THIS MONEY CARRIES INDIVIDUAL SERIALS AND BYPASSES ALL SECURITY TESTS INCLUDING UV-LIGHT AND IODINE COUNTERFEIT PEN MARKERS. BUY BIOMETRIC PASSPORT, DRIVING LICENSE, ID CARD, VISA, SSN. We have years of experience producing original quality real registered passports, IDs, driver licenses, and many other identity documents, really cheap for all countries such as; Switzerland, United Kingdom, United States, Spain, Sweden, Australia, Austria, Canada, Chile, Denmark, Ecuador, Finland, France, Germany, Israel, New Zealand, South Africa, e.t.c. Passports with chips for the following countries are also available: Australia, Austria, Finland, Germany, Malaysia, Netherlands, Sweden, Switzerland, Thailand, United Kingdom, United States, etc. We can also produce documents such as work permits, for the UK, USA, and Italy just to name a few. Buy biometric Passport, ID cards, Visa, Drivers License, TOEFL, IELTS, Toeic, Celta/Delt, BUY fake British passports (UK), Americans, Canadians, False identity CARDS ONLINE IN UNITED STATES, DRIVING LICENSE, Buy Registered birth certificates, BUY REAL DRIVING LICENSE, Buy Real EU/USA/UK/Canadian Passports, Driver’s License, ID Cards, Visas, USA Green Card and Citizenship, buy original/fake passports, Driver's license, ID cards, birth certificates, diplomas, university degrees, etc BUY HIGH QUALITY REAL PASSPORT, ID CARDS, DRIVING LICENSE, passport, visa, France driver's license, ID cards, diplomas, birth certificates ETC. Buy Visa, passport, ID card, birth certificate, Driving License Transcripts, Buy Original Passports, Id Card Drivers License, Best Quality Novelty real IDs and Passports, Marriage certificates and Driver licenses etc buy now high quality have the best HOLOGRAMS AND DUPLICATING MACHINES With over 13 million of out documents circulating over the world. -IDs Scan-yes...-HOLOGRAMS: IDENTICAL-BAR CODES: IDS SCAN-UV: https://fastnationality.com/ YES IDS WITH FAST SHIPPING https://darkwebdocuments.net/ WhatsApp..................+13524051163 Contact..............darkwebdocuments(a)gmail.com We guarantee and offer high-quality counterfeit bills for the following currencies; EUR – Euro USD – US Dollar GBP – British Pound BUY PASSPORT | PASSPORT ONLINE | PASSPORTS FOR SALE | ID CARD ONLINE | BUY DRIVING LICENSE | BUY ID CARD | DRIVERS LICENSE ONLINE | BUY IELTS CERTIFICATE ONLINE | AUSTRALIA DOCUMENTS | BELGIUM DOCUMENTS | CANADA DOCUMENTS | GERMANY DOCUMENTS | FRANCE DOCUMENTS | NETHERLANDS | DOCUMENTS | ITALY DOCUMENTS | SPAIN DOCUMENTS | PORTUGAL DOCUMENTS | USA DOCUMENTS | UNITED KINGDOM DOCUMENTS | BUY REAL CANADIAN PASSPORT | https://fastnationality.com/immigration-permanent-resident-card/ | BUY REAL USA PASSPORT | ID CARD USA | BUY PASSPORT CANADA | BUY US ID CARD | BUY REAL US PASSPORT ONLINE | You can contact us directly to get the additional information and place the order... https://darkwebdocuments.net/ WhatsApp..................+13524051163 Contact..............darkwebdocuments(a)gmail.com

1 month, 1 week

Watsap +16465806302. Buy registered driving license. Buy 100% undetectable counterfeit euro.

by markcarlson70＠gmail.com

Watsap +16465806302. Buy registered driving license. Buy 100% undetectable counterfeit euro.

1 month, 1 week

TANGIBLE INFORMATION ABOUT FUNDS RECOVERY AND HACKERS

by osmanbamsi41＠gmail.com

‎I was scammed of $92000 worth of bitcoin with a scam forex investment unknowingly then I didn’t know what to do.. I felt like I should committed a suicide but I fortunately have a good start again until my friend introduced me to one of the best recovery agent in Texas who helped me to recovered it back for me in just few days, if you feel scammed with fake forex or any form of scam you don’t need to be worried you can contact on Ghost Champion Hackers they are difference from others the did wonders for me which I have been living my best life. the recovered my funds with a software called Goplus super recovery. finally breathing again. They didn’t just return money—they gave me back hope and also trust. You can reach out to them at Email : ghostchampionwizard(a)gmail.com Telegram: https://t.me/WizardGhosthacker Website : https://stellamariaqueen03.wixsite.com/-ghost-champion-wiza

1 month, 1 week

TANGIBLE INFORMATION ABOUT FUNDS RECOVERY AND HACKERS

by osmanbamsi41＠gmail.com

1 month, 1 week

[PATCH v5 6/7] drm/amdgpu: rename amdgpu_fill_buffer as amdgpu_ttm_clear_buffer

by Pierre-Eric Pelloux-Prayer

This is the only use case for this function. --- v2: amdgpu_ttm_clear_buffer instead of amdgpu_clear_buffer --- Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer(a)amd.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 12 +++++------ drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 23 ++++++++++------------ drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 13 ++++++------ 3 files changed, 22 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index d0884bbffa75..195cb1c814d1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -717,9 +717,9 @@ int amdgpu_bo_create(struct amdgpu_device *adev, bo->tbo.resource->mem_type == TTM_PL_VRAM) { struct dma_fence *fence; - r = amdgpu_fill_buffer(amdgpu_ttm_next_clear_entity(adev), - bo, 0, NULL, &fence, - true, AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER); + r = amdgpu_ttm_clear_buffer(amdgpu_ttm_next_clear_entity(adev), + bo, NULL, &fence, + true, AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER); if (unlikely(r)) goto fail_unreserve; @@ -1329,9 +1329,9 @@ void amdgpu_bo_release_notify(struct ttm_buffer_object *bo) if (r) goto out; - r = amdgpu_fill_buffer(amdgpu_ttm_next_clear_entity(adev), - abo, 0, &bo->base._resv, &fence, - false, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE); + r = amdgpu_ttm_clear_buffer(amdgpu_ttm_next_clear_entity(adev), + abo, &bo->base._resv, &fence, + false, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE); if (WARN_ON(r)) goto out; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index a3d0998b8cec..e74f9f8a88dc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -417,8 +417,8 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo, if (old_mem->mem_type == TTM_PL_VRAM && (abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE)) { struct dma_fence *wipe_fence = NULL; - r = amdgpu_fill_buffer(entity, abo, 0, NULL, &wipe_fence, - false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT); + r = amdgpu_ttm_clear_buffer(entity, abo, NULL, &wipe_fence, + false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT); if (r) { goto error; } else if (wipe_fence) { @@ -2572,26 +2572,23 @@ static int amdgpu_ttm_fill_mem(struct amdgpu_device *adev, } /** - * amdgpu_fill_buffer - fill a buffer with a given value + * amdgpu_ttm_clear_buffer - fill a buffer with 0 * @entity: entity to use * @bo: the bo to fill - * @src_data: the value to set * @resv: fences contained in this reservation will be used as dependencies. * @out_fence: the fence from the last clear will be stored here. It might be * NULL if no job was run. - * @dependency: optional input dependency fence. * @consider_clear_status: true if region reported as cleared by amdgpu_res_cleared() * are skipped. * @k_job_id: trace id * */ -int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, - struct amdgpu_bo *bo, - uint32_t src_data, - struct dma_resv *resv, - struct dma_fence **out_fence, - bool consider_clear_status, - u64 k_job_id) +int amdgpu_ttm_clear_buffer(struct amdgpu_ttm_buffer_entity *entity, + struct amdgpu_bo *bo, + struct dma_resv *resv, + struct dma_fence **out_fence, + bool consider_clear_status, + u64 k_job_id) { struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); struct dma_fence *fence = NULL; @@ -2622,7 +2619,7 @@ int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, goto error; r = amdgpu_ttm_fill_mem(adev, entity, - src_data, to, cur_size, resv, + 0, to, cur_size, resv, &next, true, k_job_id); if (r) goto error; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h index 436a3e09a178..d7b14d5cac77 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h @@ -187,13 +187,12 @@ int amdgpu_copy_buffer(struct amdgpu_device *adev, struct dma_resv *resv, struct dma_fence **fence, bool vm_needs_flush, uint32_t copy_flags); -int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, - struct amdgpu_bo *bo, - uint32_t src_data, - struct dma_resv *resv, - struct dma_fence **out_fence, - bool consider_clear_status, - u64 k_job_id); +int amdgpu_ttm_clear_buffer(struct amdgpu_ttm_buffer_entity *entity, + struct amdgpu_bo *bo, + struct dma_resv *resv, + struct dma_fence **out_fence, + bool consider_clear_status, + u64 k_job_id); struct amdgpu_ttm_buffer_entity *amdgpu_ttm_next_clear_entity(struct amdgpu_device *adev); int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo); -- 2.43.0

1 month, 1 week

[PATCH v5 5/7] drm/amdgpu: get rid of amdgpu_ttm_clear_buffer

by Pierre-Eric Pelloux-Prayer

It's doing the same thing as amdgpu_fill_buffer(src_data=0), so drop it. The only caveat is that amdgpu_res_cleared() return value is only valid right after allocation. --- v2: introduce new "bool consider_clear_status" arg --- Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer(a)amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 16 ++-- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 88 +++++----------------- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 6 +- 3 files changed, 32 insertions(+), 78 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 66c20dd46d12..d0884bbffa75 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -717,13 +717,17 @@ int amdgpu_bo_create(struct amdgpu_device *adev, bo->tbo.resource->mem_type == TTM_PL_VRAM) { struct dma_fence *fence; - r = amdgpu_ttm_clear_buffer(bo, bo->tbo.base.resv, &fence); + r = amdgpu_fill_buffer(amdgpu_ttm_next_clear_entity(adev), + bo, 0, NULL, &fence, + true, AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER); if (unlikely(r)) goto fail_unreserve; - dma_resv_add_fence(bo->tbo.base.resv, fence, - DMA_RESV_USAGE_KERNEL); - dma_fence_put(fence); + if (fence) { + dma_resv_add_fence(bo->tbo.base.resv, fence, + DMA_RESV_USAGE_KERNEL); + dma_fence_put(fence); + } } if (!bp->resv) amdgpu_bo_unreserve(bo); @@ -1326,8 +1330,8 @@ void amdgpu_bo_release_notify(struct ttm_buffer_object *bo) goto out; r = amdgpu_fill_buffer(amdgpu_ttm_next_clear_entity(adev), - abo, 0, &bo->base._resv, - &fence, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE); + abo, 0, &bo->base._resv, &fence, + false, AMDGPU_KERNEL_JOB_ID_CLEAR_ON_RELEASE); if (WARN_ON(r)) goto out; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 648ad344e89c..a3d0998b8cec 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -418,7 +418,7 @@ static int amdgpu_move_blit(struct ttm_buffer_object *bo, (abo->flags & AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE)) { struct dma_fence *wipe_fence = NULL; r = amdgpu_fill_buffer(entity, abo, 0, NULL, &wipe_fence, - AMDGPU_KERNEL_JOB_ID_MOVE_BLIT); + false, AMDGPU_KERNEL_JOB_ID_MOVE_BLIT); if (r) { goto error; } else if (wipe_fence) { @@ -2572,76 +2572,25 @@ static int amdgpu_ttm_fill_mem(struct amdgpu_device *adev, } /** - * amdgpu_ttm_clear_buffer - clear memory buffers - * @bo: amdgpu buffer object - * @resv: reservation object - * @fence: dma_fence associated with the operation + * amdgpu_fill_buffer - fill a buffer with a given value + * @entity: entity to use + * @bo: the bo to fill + * @src_data: the value to set + * @resv: fences contained in this reservation will be used as dependencies. + * @out_fence: the fence from the last clear will be stored here. It might be + * NULL if no job was run. + * @dependency: optional input dependency fence. + * @consider_clear_status: true if region reported as cleared by amdgpu_res_cleared() + * are skipped. + * @k_job_id: trace id * - * Clear the memory buffer resource. - * - * Returns: - * 0 for success or a negative error code on failure. */ -int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo, - struct dma_resv *resv, - struct dma_fence **fence) -{ - struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); - struct amdgpu_ttm_buffer_entity *entity; - struct amdgpu_res_cursor cursor; - u64 addr; - int r = 0; - - if (!adev->mman.buffer_funcs_enabled) - return -EINVAL; - - if (!fence) - return -EINVAL; - entity = &adev->mman.clear_entities[0]; - *fence = dma_fence_get_stub(); - - amdgpu_res_first(bo->tbo.resource, 0, amdgpu_bo_size(bo), &cursor); - - mutex_lock(&entity->lock); - while (cursor.remaining) { - struct dma_fence *next = NULL; - u64 size; - - if (amdgpu_res_cleared(&cursor)) { - amdgpu_res_next(&cursor, cursor.size); - continue; - } - - /* Never clear more than 256MiB at once to avoid timeouts */ - size = min(cursor.size, 256ULL << 20); - - r = amdgpu_ttm_map_buffer(entity, &bo->tbo, bo->tbo.resource, &cursor, - 0, false, &size, &addr); - if (r) - goto err; - - r = amdgpu_ttm_fill_mem(adev, entity, 0, addr, size, resv, - &next, true, - AMDGPU_KERNEL_JOB_ID_TTM_CLEAR_BUFFER); - if (r) - goto err; - - dma_fence_put(*fence); - *fence = next; - - amdgpu_res_next(&cursor, size); - } -err: - mutex_unlock(&entity->lock); - - return r; -} - int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, struct amdgpu_bo *bo, uint32_t src_data, struct dma_resv *resv, - struct dma_fence **f, + struct dma_fence **out_fence, + bool consider_clear_status, u64 k_job_id) { struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); @@ -2659,6 +2608,11 @@ int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, struct dma_fence *next; uint64_t cur_size, to; + if (consider_clear_status && amdgpu_res_cleared(&dst)) { + amdgpu_res_next(&dst, dst.size); + continue; + } + /* Never fill more than 256MiB at once to avoid timeouts */ cur_size = min(dst.size, 256ULL << 20); @@ -2680,9 +2634,7 @@ int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, } error: mutex_unlock(&entity->lock); - if (f) - *f = dma_fence_get(fence); - dma_fence_put(fence); + *out_fence = fence; return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h index a6249252948b..436a3e09a178 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h @@ -187,14 +187,12 @@ int amdgpu_copy_buffer(struct amdgpu_device *adev, struct dma_resv *resv, struct dma_fence **fence, bool vm_needs_flush, uint32_t copy_flags); -int amdgpu_ttm_clear_buffer(struct amdgpu_bo *bo, - struct dma_resv *resv, - struct dma_fence **fence); int amdgpu_fill_buffer(struct amdgpu_ttm_buffer_entity *entity, struct amdgpu_bo *bo, uint32_t src_data, struct dma_resv *resv, - struct dma_fence **f, + struct dma_fence **out_fence, + bool consider_clear_status, u64 k_job_id); struct amdgpu_ttm_buffer_entity *amdgpu_ttm_next_clear_entity(struct amdgpu_device *adev); -- 2.43.0

1 month, 1 week

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

Linaro-mm-sig April 2026