diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2026-01-25 17:07:36 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-02-03 08:21:25 -0800 |
| commit | a87da7a9fa7b5c39b01d7fa30415c9211e775f2e (patch) | |
| tree | 5e74559cc7861249cf612d50bddd2b73167c9765 /drivers/gpu/drm | |
| parent | 7d08e0916a59e006c262dcd2f7168d0336c80265 (diff) | |
drm/amd: kill the outdated "Only the pthreads threading model is supported" checks
Nowadays task->group_leader->mm != task->mm is only possible if a) task is
not a group leader and b) task->group_leader->mm == NULL because
task->group_leader has already exited using sys_exit().
I don't think that drm/amd tries to detect/nack this case.
Link: https://lkml.kernel.org/r/aXY_yLVHd63UlWtm@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Christan König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <felix.kuehling@amd.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Simon Horman <horms@kernel.org>
Cc: Steven Price <steven.price@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_process.c | 10 |
2 files changed, 0 insertions, 13 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index a0f8ba382b9e..e44f158a11f0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2551,9 +2551,6 @@ void amdgpu_vm_set_task_info(struct amdgpu_vm *vm) vm->task_info->task.pid = current->pid; get_task_comm(vm->task_info->task.comm, current); - if (current->group_leader->mm != current->mm) - return; - vm->task_info->tgid = current->tgid; get_task_comm(vm->task_info->process_name, current->group_leader); } diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index a085faac9fe1..f8ef18a3aa71 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -833,12 +833,6 @@ struct kfd_process *kfd_create_process(struct task_struct *thread) if (!(thread->mm && mmget_not_zero(thread->mm))) return ERR_PTR(-EINVAL); - /* Only the pthreads threading model is supported. */ - if (thread->group_leader->mm != thread->mm) { - mmput(thread->mm); - return ERR_PTR(-EINVAL); - } - /* If the process just called exec(3), it is possible that the * cleanup of the kfd_process (following the release of the mm * of the old process image) is still in the cleanup work queue. @@ -918,10 +912,6 @@ struct kfd_process *kfd_get_process(const struct task_struct *thread) if (!thread->mm) return ERR_PTR(-EINVAL); - /* Only the pthreads threading model is supported. */ - if (thread->group_leader->mm != thread->mm) - return ERR_PTR(-EINVAL); - process = find_process(thread, false); if (!process) return ERR_PTR(-EINVAL); |