Documented in 1 files:
Defined in 1 files as a prototype:
Defined in 2 files as a function:
- include/linux/dma-mapping.h, line 501 (as a function)
- kernel/dma/mapping.c, line 469 (as a function)
Referenced in 4 files:
- drivers/nvme/host/pci.c, line 974
- include/linux/blk-mq-dma.h, line 74
- kernel/dma/mapping.c, line 477
- mm/hmm.c
Smatch caller information:
drivers/nvme/host/pci.c blk_rq_dma_unmap() -> dma_need_unmap()
| Type | Parameter | Key | Value |
|---|---|---|---|
| DATA_SOURCE | 0 | dev | $1 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING |
drivers/nvme/host/pci.c nvme_pci_prp_save_mapping() -> dma_need_unmap()
| Type | Parameter | Key | Value |
|---|---|---|---|
| DATA_SOURCE | 0 | dev | $1 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HALF_LOCKED2 | __tag_set->srcu | ||
| HALF_LOCKED2 | rcu_read |
mm/hmm.c hmm_dma_map_alloc() -> dma_need_unmap()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | dev | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->dma_mask | 0,4096-ptr_max |
| PARAM_VALUE | 0 | dev->flags | 4096-ptr_max |
| CAPPED_DATA | 0 | dev | 1 |
| DATA_SOURCE | 0 | dev | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| UNITS | 0 | dev | unit_byte |
mm/hmm.c hmm_dma_map_pfn() -> dma_need_unmap()
| Type | Parameter | Key | Value |
|---|---|---|---|
| DATA_SOURCE | 0 | dev | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| UNITS | 0 | dev | unit_byte |
| HALF_LOCKED2 | &odp_imr->umem_mutex | ||
| HALF_LOCKED2 | &pool->lock | ||
| HALF_LOCKED2 | &umem_odp->umem_mutex |
mm/hmm.c hmm_dma_map_pfn() -> dma_need_unmap()
| Type | Parameter | Key | Value |
|---|---|---|---|
| DATA_SOURCE | 0 | dev | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| UNITS | 0 | dev | unit_byte |
| HALF_LOCKED2 | &odp_imr->umem_mutex | ||
| HALF_LOCKED2 | &pool->lock | ||
| HALF_LOCKED2 | &umem_odp->umem_mutex |
mm/hmm.c hmm_dma_map_pfn() -> dma_need_unmap()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | dev | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->dma_mask | 4096-ptr_max |
| PARAM_VALUE | 0 | dev->flags | 4096-ptr_max |
| DATA_SOURCE | 0 | dev | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| UNITS | 0 | dev | unit_byte |
| HALF_LOCKED2 | &odp_imr->umem_mutex | ||
| HALF_LOCKED2 | &pool->lock | ||
| HALF_LOCKED2 | &umem_odp->umem_mutex |
mm/hmm.c hmm_dma_unmap_pfn() -> dma_need_unmap()
| Type | Parameter | Key | Value |
|---|---|---|---|
| DATA_SOURCE | 0 | dev | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| UNITS | 0 | dev | unit_byte |
| LOCK2 | &umem_odp->umem_mutex | ||
| TYPE_LOCK | (struct ib_umem_odp)->umem_mutex |