From 66257db7a5276d7f1aff8850388a0eb675ffa2e1 Mon Sep 17 00:00:00 2001 From: Nicolai Hähnle Date: Thu, 15 Dec 2016 17:23:49 +0100 Subject: drm/ttm: add evict parameter to ttm_bo_driver::move_notify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Ensure that the driver can listen to evictions even when they don't take the path through ttm_bo_driver::move. This is crucial for amdgpu, which relies on an eviction counter to skip re-binding page tables when possible. Signed-off-by: Nicolai Hähnle Reviewed-by: Chunming Zhou Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index bf79b73e1538..c29db99f9048 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -849,6 +849,7 @@ int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer, } void amdgpu_bo_move_notify(struct ttm_buffer_object *bo, + bool evict, struct ttm_mem_reg *new_mem) { struct amdgpu_device *adev = amdgpu_ttm_adev(bo->bdev); -- cgit From 661a7606c97b6e6a73f553b0a6b60f553d5afa77 Mon Sep 17 00:00:00 2001 From: Nicolai Hähnle Date: Thu, 15 Dec 2016 17:26:42 +0100 Subject: drm/amd/amdgpu: move eviction counting to amdgpu_bo_move_notify MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This catches evictions of shadow page tables from the GART. Since shadow page tables are always stored in system memory, amdgpu_bo_move is never called for them. This fixes a crash during command submission that occurs when only a shadow page table and no other BOs were evicted since the last submission. Fixes: 1baa439fb2f4e586 ("drm/amdgpu: allocate shadow for pd/pt bo V2") Signed-off-by: Nicolai Hähnle Reviewed-by: Chunming Zhou Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 4 ++++ drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 ---- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index c29db99f9048..d94cdeff0617 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -862,6 +862,10 @@ void amdgpu_bo_move_notify(struct ttm_buffer_object *bo, abo = container_of(bo, struct amdgpu_bo, tbo); amdgpu_vm_bo_invalidate(adev, abo); + /* remember the eviction */ + if (evict) + atomic64_inc(&adev->num_evictions); + /* update statistics */ if (!new_mem) return; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index c695b6c55361..25568079fda4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -466,10 +466,6 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, adev = amdgpu_ttm_adev(bo->bdev); - /* remember the eviction */ - if (evict) - atomic64_inc(&adev->num_evictions); - if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { amdgpu_move_null(bo, new_mem); return 0; -- cgit From 36ea83d1512008ab6631c54971e8de8cf2f0a7b4 Mon Sep 17 00:00:00 2001 From: Nicolai Hähnle Date: Tue, 10 Jan 2017 19:06:00 +0100 Subject: drm/amd/amdgpu: lock reservation object while creating shadow bo MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ttm_bo_init checks that the reservation object is locked. This is the caller's responsibility when resv != NULL. Otherwise, the inline reservation object of the newly allocated buffer is used and must explicitly be locked. Uninterruptible w/w locks without an acquire context are always successful. v2: use ww_mutex_lock Signed-off-by: Nicolai Hähnle Reviewed-by: Edward O'Callaghan (v1) Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index d94cdeff0617..ac6b074b8821 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -472,7 +472,16 @@ int amdgpu_bo_create(struct amdgpu_device *adev, return r; if (amdgpu_need_backup(adev) && (flags & AMDGPU_GEM_CREATE_SHADOW)) { + if (!resv) { + r = ww_mutex_lock(&(*bo_ptr)->tbo.resv->lock, NULL); + WARN_ON(r != 0); + } + r = amdgpu_bo_create_shadow(adev, size, byte_align, (*bo_ptr)); + + if (!resv) + ww_mutex_unlock(&(*bo_ptr)->tbo.resv->lock); + if (r) amdgpu_bo_unref(bo_ptr); } -- cgit From f1543f58cbc7f62c4ea0cca57bbb4a95dc752264 Mon Sep 17 00:00:00 2001 From: Nicolai Hähnle Date: Tue, 10 Jan 2017 20:36:56 +0100 Subject: drm/amd/amdgpu: fix locking in bo creation error path MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Unlock the resv lock only if we were the ones to lock it in the first place. Signed-off-by: Nicolai Hähnle Reviewed-by: Edward O'Callaghan Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index ac6b074b8821..7aecf2667f9d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -408,7 +408,8 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, return 0; fail_unreserve: - ww_mutex_unlock(&bo->tbo.resv->lock); + if (!resv) + ww_mutex_unlock(&bo->tbo.resv->lock); amdgpu_bo_unref(&bo); return r; } -- cgit From e1f055b30187204439b6693a118b9dde9cda04ae Mon Sep 17 00:00:00 2001 From: Christian König Date: Tue, 10 Jan 2017 17:27:49 +0100 Subject: drm/amdgpu: user BO priority instead of self coding it (v2) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Keeping groups of BOs on the LRU is to time consuming on command submission. Instead use the newly added BO priority to give a certain eviction order. v2: agd: trivial warning fix Signed-off-by: Christian König Reviewed-by: Roger.He Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 3 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 69 +----------------------------- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 12 ------ 3 files changed, 5 insertions(+), 79 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 7aecf2667f9d..c43e8c534899 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -386,6 +386,9 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, if (unlikely(r != 0)) return r; + bo->tbo.priority = ilog2(bo->tbo.num_pages); + bo->tbo.priority = min(bo->tbo.priority, (unsigned)(TTM_MAX_BO_PRIORITY - 1)); + if (flags & AMDGPU_GEM_CREATE_VRAM_CLEARED && bo->tbo.mem.placement & TTM_PL_FLAG_VRAM) { struct dma_fence *fence; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index d53445074897..6b1f85b1a1cb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -1048,56 +1048,6 @@ uint32_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm, return flags; } -static void amdgpu_ttm_lru_removal(struct ttm_buffer_object *tbo) -{ - struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev); - unsigned i, j; - - for (i = 0; i < AMDGPU_TTM_LRU_SIZE; ++i) { - struct amdgpu_mman_lru *lru = &adev->mman.log2_size[i]; - - for (j = 0; j < TTM_NUM_MEM_TYPES; ++j) - if (&tbo->lru == lru->lru[j]) - lru->lru[j] = tbo->lru.prev; - - if (&tbo->swap == lru->swap_lru) - lru->swap_lru = tbo->swap.prev; - } -} - -static struct amdgpu_mman_lru *amdgpu_ttm_lru(struct ttm_buffer_object *tbo) -{ - struct amdgpu_device *adev = amdgpu_ttm_adev(tbo->bdev); - unsigned log2_size = min(ilog2(tbo->num_pages), - AMDGPU_TTM_LRU_SIZE - 1); - - return &adev->mman.log2_size[log2_size]; -} - -static struct list_head *amdgpu_ttm_lru_tail(struct ttm_buffer_object *tbo) -{ - struct amdgpu_mman_lru *lru = amdgpu_ttm_lru(tbo); - struct list_head *res = lru->lru[tbo->mem.mem_type]; - - lru->lru[tbo->mem.mem_type] = &tbo->lru; - while ((++lru)->lru[tbo->mem.mem_type] == res) - lru->lru[tbo->mem.mem_type] = &tbo->lru; - - return res; -} - -static struct list_head *amdgpu_ttm_swap_lru_tail(struct ttm_buffer_object *tbo) -{ - struct amdgpu_mman_lru *lru = amdgpu_ttm_lru(tbo); - struct list_head *res = lru->swap_lru; - - lru->swap_lru = &tbo->swap; - while ((++lru)->swap_lru == res) - lru->swap_lru = &tbo->swap; - - return res; -} - static bool amdgpu_ttm_bo_eviction_valuable(struct ttm_buffer_object *bo, const struct ttm_place *place) { @@ -1136,14 +1086,12 @@ static struct ttm_bo_driver amdgpu_bo_driver = { .fault_reserve_notify = &amdgpu_bo_fault_reserve_notify, .io_mem_reserve = &amdgpu_ttm_io_mem_reserve, .io_mem_free = &amdgpu_ttm_io_mem_free, - .lru_removal = &amdgpu_ttm_lru_removal, - .lru_tail = &amdgpu_ttm_lru_tail, - .swap_lru_tail = &amdgpu_ttm_swap_lru_tail, + .lru_tail = &ttm_bo_default_lru_tail, + .swap_lru_tail = &ttm_bo_default_swap_lru_tail, }; int amdgpu_ttm_init(struct amdgpu_device *adev) { - unsigned i, j; int r; r = amdgpu_ttm_global_init(adev); @@ -1161,19 +1109,6 @@ int amdgpu_ttm_init(struct amdgpu_device *adev) DRM_ERROR("failed initializing buffer object driver(%d).\n", r); return r; } - - for (i = 0; i < AMDGPU_TTM_LRU_SIZE; ++i) { - struct amdgpu_mman_lru *lru = &adev->mman.log2_size[i]; - - for (j = 0; j < TTM_NUM_MEM_TYPES; ++j) - lru->lru[j] = &adev->mman.bdev.man[j].lru[0]; - lru->swap_lru = &adev->mman.bdev.glob->swap_lru[0]; - } - - for (j = 0; j < TTM_NUM_MEM_TYPES; ++j) - adev->mman.guard.lru[j] = NULL; - adev->mman.guard.swap_lru = NULL; - adev->mman.initialized = true; r = ttm_bo_init_mm(&adev->mman.bdev, TTM_PL_VRAM, adev->mc.real_vram_size >> PAGE_SHIFT); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h index 98ee384f0fca..6bdede8ff12b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h @@ -34,13 +34,6 @@ #define AMDGPU_PL_FLAG_GWS (TTM_PL_FLAG_PRIV << 1) #define AMDGPU_PL_FLAG_OA (TTM_PL_FLAG_PRIV << 2) -#define AMDGPU_TTM_LRU_SIZE 20 - -struct amdgpu_mman_lru { - struct list_head *lru[TTM_NUM_MEM_TYPES]; - struct list_head *swap_lru; -}; - struct amdgpu_mman { struct ttm_bo_global_ref bo_global_ref; struct drm_global_reference mem_global_ref; @@ -58,11 +51,6 @@ struct amdgpu_mman { struct amdgpu_ring *buffer_funcs_ring; /* Scheduler entity for buffer moves */ struct amd_sched_entity entity; - - /* custom LRU management */ - struct amdgpu_mman_lru log2_size[AMDGPU_TTM_LRU_SIZE]; - /* guard for log2_size array, don't add anything in between */ - struct amdgpu_mman_lru guard; }; extern const struct ttm_mem_type_manager_func amdgpu_gtt_mgr_func; -- cgit From 373308a5f5f3f82656567481f688350887abb771 Mon Sep 17 00:00:00 2001 From: Christian König Date: Mon, 23 Jan 2017 16:28:06 -0500 Subject: drm/amdgpu: double the priority of kernel allocations MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Give kernel allocations a higher priority cause it is often more work to swap them back in. Signed-off-by: Christian König Reviewed-by: Roger.He Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index c43e8c534899..a97d88314b1b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -387,6 +387,8 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, return r; bo->tbo.priority = ilog2(bo->tbo.num_pages); + if (kernel) + bo->tbo.priority *= 2; bo->tbo.priority = min(bo->tbo.priority, (unsigned)(TTM_MAX_BO_PRIORITY - 1)); if (flags & AMDGPU_GEM_CREATE_VRAM_CLEARED && -- cgit From a2e2f29970aa1e53219e3499382c41d61c8959f8 Mon Sep 17 00:00:00 2001 From: Nils Holland Date: Sun, 22 Jan 2017 20:15:27 +0100 Subject: drm/amdgpu: Bring bo creation in line with radeon driver (v2) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add the bo creation changes that have been done to the radeon driver in recent times, e.g. disable GTT WC on 32 bit because it is broken there, and also disable it generally (and print a warning message) when CONFIG_X86_PAT is not set. v2: agd: fix warning in defined(CONFIG_X86) && !defined(CONFIG_X86_PAT) case Reviewed-by: Michel Dänzer Reviewed-by: Christian König Signed-off-by: Nils Holland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index a97d88314b1b..d1aa291b2638 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -363,11 +363,31 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, bo->flags = flags; +#ifdef CONFIG_X86_32 + /* XXX: Write-combined CPU mappings of GTT seem broken on 32-bit + * See https://bugs.freedesktop.org/show_bug.cgi?id=84627 + */ + bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC; +#elif defined(CONFIG_X86) && !defined(CONFIG_X86_PAT) + /* Don't try to enable write-combining when it can't work, or things + * may be slow + * See https://bugs.freedesktop.org/show_bug.cgi?id=88758 + */ + +#warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \ + thanks to write-combining + + if (bo->flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) + DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for " + "better performance thanks to write-combining\n"); + bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC; +#else /* For architectures that don't support WC memory, * mask out the WC flag from the BO */ if (!drm_arch_can_wc_memory()) bo->flags &= ~AMDGPU_GEM_CREATE_CPU_GTT_USWC; +#endif amdgpu_fill_placement_to_bo(bo, placement); /* Kernel allocation are uninterruptible */ -- cgit From 31bb90f1cd084e0ca1359455eaf74bb64b5c5c82 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 1 Feb 2017 16:59:21 +0100 Subject: drm/amdgpu: shut up #warning for compile testing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit My randconfig tests on linux-next showed a newly introduced warning: drivers/gpu/drm/amd/amdgpu/amdgpu_object.c: In function 'amdgpu_bo_create_restricted': drivers/gpu/drm/amd/amdgpu/amdgpu_object.c:377:2: error: #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance thanks to write-combining [-Werror=cpp] Generally speaking, warnings about bad kernel configuration are not particularly helpful. We could enforce the selection of X86_PAT through Kconfig, so the driver cannot even be used unless it is enabled, or we could just rely on the runtime warning that is also there. In this version, I'm making the warning conditional on CONFIG_COMPILE_TEST, which shuts it up for me, but not people that may actually want to run the kernel as a compromize. Fixes: a2e2f29970aa ("drm/amdgpu: Bring bo creation in line with radeon driver (v2)") Reviewed-by: Michel Dänzer Signed-off-by: Arnd Bergmann Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index d1aa291b2638..da3a53a39d0b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -374,8 +374,10 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, * See https://bugs.freedesktop.org/show_bug.cgi?id=88758 */ +#ifndef CONFIG_COMPILE_TEST #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \ thanks to write-combining +#endif if (bo->flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for " -- cgit From 38fc4856ad98f230bc91da0421dec69e4aee40f8 Mon Sep 17 00:00:00 2001 From: Samuel Pitoiset Date: Thu, 9 Feb 2017 11:33:36 +0100 Subject: drm/amdgpu: fix a potential deadlock in amdgpu_bo_create_restricted() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When ttm_bo_init() fails, the reservation mutex should be unlocked. In debug build, the kernel reported "possible recursive locking detected" in this codepath. For debugging purposes, I also added a "WARN_ON(ww_mutex_is_locked())" when ttm_bo_init() fails and the mutex was locked as expected. This should fix (random) GPU hangs. The easy way to reproduce the issue is to change the "Super Sampling" option from 1.0 to 2.0 in Hitman. It will create a huge buffer, evict a bunch of buffers (around ~5k) and deadlock. This regression has been introduced pretty recently. v2: only release the mutex if resv is NULL Fixes: 12a852219583 ("drm/amdgpu: improve AMDGPU_GEM_CREATE_VRAM_CLEARED handling (v2)") Reviewed-by: Christian König Signed-off-by: Samuel Pitoiset Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index da3a53a39d0b..993c003a42e4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -405,8 +405,11 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, &bo->placement, page_align, !kernel, NULL, acc_size, sg, resv ? resv : &bo->tbo.ttm_resv, &amdgpu_ttm_bo_destroy); - if (unlikely(r != 0)) + if (unlikely(r != 0)) { + if (!resv) + ww_mutex_unlock(&bo->tbo.resv->lock); return r; + } bo->tbo.priority = ilog2(bo->tbo.num_pages); if (kernel) -- cgit From fad061270ac43ff9eed315f0eae7c40b694592de Mon Sep 17 00:00:00 2001 From: Samuel Pitoiset Date: Thu, 9 Feb 2017 11:33:37 +0100 Subject: drm/amdgpu: report the number of bytes moved at buffer creation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Like ttm_bo_validate(), ttm_bo_init() might need to move BO and the number of bytes moved by TTM should be reported. This can help the throttle buffer migration mechanism to make a better decision. v2: fix computation Reviewed-by: Christian König Signed-off-by: Samuel Pitoiset Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 3 +-- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 6 ++++++ 3 files changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 94a64e3bc682..96ad79627dbb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1709,6 +1709,7 @@ int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data); int amdgpu_cs_get_ring(struct amdgpu_device *adev, u32 ip_type, u32 ip_instance, u32 ring, struct amdgpu_ring **out_ring); +void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes); void amdgpu_ttm_placement_from_domain(struct amdgpu_bo *abo, u32 domain); bool amdgpu_ttm_bo_is_amdgpu_bo(struct ttm_buffer_object *bo); int amdgpu_ttm_tt_get_user_pages(struct ttm_tt *ttm, struct page **pages); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index cf2e8c4e9b8b..57301f5936fa 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -344,8 +344,7 @@ static u64 amdgpu_cs_get_threshold_for_moves(struct amdgpu_device *adev) * submission. This can result in a debt that can stop buffer migrations * temporarily. */ -static void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, - u64 num_bytes) +void amdgpu_cs_report_moved_bytes(struct amdgpu_device *adev, u64 num_bytes) { spin_lock(&adev->mm_stats.lock); adev->mm_stats.accum_us -= bytes_to_us(adev, num_bytes); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 993c003a42e4..be80a4a68d7b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -323,6 +323,7 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, struct amdgpu_bo *bo; enum ttm_bo_type type; unsigned long page_align; + u64 initial_bytes_moved; size_t acc_size; int r; @@ -401,10 +402,15 @@ int amdgpu_bo_create_restricted(struct amdgpu_device *adev, locked = ww_mutex_trylock(&bo->tbo.ttm_resv.lock); WARN_ON(!locked); } + + initial_bytes_moved = atomic64_read(&adev->num_bytes_moved); r = ttm_bo_init(&adev->mman.bdev, &bo->tbo, size, type, &bo->placement, page_align, !kernel, NULL, acc_size, sg, resv ? resv : &bo->tbo.ttm_resv, &amdgpu_ttm_bo_destroy); + amdgpu_cs_report_moved_bytes(adev, + atomic64_read(&adev->num_bytes_moved) - initial_bytes_moved); + if (unlikely(r != 0)) { if (!resv) ww_mutex_unlock(&bo->tbo.resv->lock); -- cgit