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gpu: nvgpu: Replace kref for refcounting in nvgpu

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- added wrapper struct nvgpu_ref over nvgpu_atomic_t
- added nvgpu_ref_* APIs to access the above struct

JIRA NVGPU-140

Change-Id: Id47f897995dd4721751f7610b6d4d4fbfe4d6b9a
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1540899
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
This commit is contained in:
Debarshi Dutta
2017-08-08 12:08:03 +05:30
committed by mobile promotions
parent 8662fae334
commit 3fa47b877d
25 changed files with 176 additions and 98 deletions
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6
drivers/gpu/nvgpu/common/linux/vm.c
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@@ -155,7 +155,7 @@ static u64 __nvgpu_vm_find_mapping(struct vm_gk20a *vm,
else
mapped_buffer->own_mem_ref = true;
}
kref_get(&mapped_buffer->ref);
nvgpu_ref_get(&mapped_buffer->ref);
nvgpu_log(g, gpu_dbg_map,
"gv: 0x%04x_%08x + 0x%-7zu "
@@ -380,7 +380,7 @@ u64 nvgpu_vm_map(struct vm_gk20a *vm,
mapped_buffer->user_mapped = user_mapped ? 1 : 0;
mapped_buffer->own_mem_ref = user_mapped;
nvgpu_init_list_node(&mapped_buffer->buffer_list);
kref_init(&mapped_buffer->ref);
nvgpu_ref_init(&mapped_buffer->ref);
err = nvgpu_insert_mapped_buf(vm, mapped_buffer);
if (err) {
@@ -425,6 +425,6 @@ void nvgpu_vm_unmap(struct vm_gk20a *vm, u64 offset)
return;
}
kref_put(&mapped_buffer->ref, gk20a_vm_unmap_locked_kref);
nvgpu_ref_put(&mapped_buffer->ref, gk20a_vm_unmap_locked_ref);
nvgpu_mutex_release(&vm->update_gmmu_lock);
}