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drm/amdkfd: add svm ioctl API

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Add svm (shared virtual memory) ioctl data structure and API definition.

The svm ioctl API is designed to be extensible in the future. All
operations are provided by a single IOCTL to preserve ioctl number
space. The arguments structure ends with a variable size array of
attributes that can be used to set or get one or multiple attributes.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang
2020-02-05 17:59:15 -05:00
committed by Alex Deucher
parent 2aeb742b72
commit 40ce74d1b2
5 changed files with 147 additions and 2 deletions
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1
drivers/gpu/drm/amd/amdkfd/kfd_process.c
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@@ -1208,6 +1208,7 @@ static struct kfd_process *create_process(const struct task_struct *thread)
process->mm = thread->mm;
process->lead_thread = thread->group_leader;
process->n_pdds = 0;
process->svm_disabled = false;
INIT_DELAYED_WORK(&process->eviction_work, evict_process_worker);
INIT_DELAYED_WORK(&process->restore_work, restore_process_worker);
process->last_restore_timestamp = get_jiffies_64();