diff options
Diffstat (limited to 'meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4148-drm-amdkfd-Take-reference-to-gtt-usertask.patch')
| -rw-r--r-- | meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4148-drm-amdkfd-Take-reference-to-gtt-usertask.patch | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4148-drm-amdkfd-Take-reference-to-gtt-usertask.patch b/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4148-drm-amdkfd-Take-reference-to-gtt-usertask.patch deleted file mode 100644 index a5c54077..00000000 --- a/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4148-drm-amdkfd-Take-reference-to-gtt-usertask.patch +++ /dev/null @@ -1,47 +0,0 @@ -From 2f624615743214a059c25bde1525daac702c88d0 Mon Sep 17 00:00:00 2001 -From: Felix Kuehling <Felix.Kuehling@amd.com> -Date: Mon, 19 Mar 2018 16:01:16 -0400 -Subject: [PATCH 4148/5725] drm/amdkfd: Take reference to gtt->usertask - -Theoretically the task struct can be destroyed before the BO. Use -the task_struct's reference count to prevent that. - -Change-Id: I20f0c42c8f521347bc93987d0703db1f07696000 -Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> -Signed-off-by: Kalyan Alle <kalyan.alle@amd.com> ---- - drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 10 +++++++++- - 1 file changed, 9 insertions(+), 1 deletion(-) - -diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c -index 71a5c67..6c81f2d 100644 ---- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c -+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c -@@ -1024,6 +1024,9 @@ static void amdgpu_ttm_backend_destroy(struct ttm_tt *ttm) - { - struct amdgpu_ttm_tt *gtt = (void *)ttm; - -+ if (gtt->usertask) -+ put_task_struct(gtt->usertask); -+ - ttm_dma_tt_fini(>t->ttm); - kfree(gtt); - } -@@ -1112,8 +1115,13 @@ int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr, - return -EINVAL; - - gtt->userptr = addr; -- gtt->usertask = current->group_leader; - gtt->userflags = flags; -+ -+ if (gtt->usertask) -+ put_task_struct(gtt->usertask); -+ gtt->usertask = current->group_leader; -+ get_task_struct(gtt->usertask); -+ - spin_lock_init(>t->guptasklock); - INIT_LIST_HEAD(>t->guptasks); - atomic_set(>t->mmu_invalidations, 0); --- -2.7.4 - |