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This commit is contained in:
Andy Ritger
2022-10-10 14:59:24 -07:00
parent fe0728787f
commit 90eb10774f
758 changed files with 88383 additions and 26493 deletions
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15
kernel-open/nvidia-uvm/uvm_va_block.h
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@@ -440,11 +440,9 @@ struct uvm_va_block_struct
#if UVM_IS_CONFIG_HMM()
struct
{
// The MMU notifier is registered per va_block.
struct mmu_interval_notifier notifier;
// Parent VA space pointer. It is NULL for UVM managed blocks or if
// the HMM block is dead. This field can be read while holding the
// block lock and is only modified while holding the va_space write
@@ -551,6 +549,11 @@ static inline void uvm_va_block_retain(uvm_va_block_t *va_block)
nv_kref_get(&va_block->kref);
}
// Locking: The va_block lock must not be held.
// The va_space lock must be held in write mode unless it is the special case
// that the block has no GPU state; for example, right after calling
// uvm_va_block_create(). In that case, the va_space lock can be held in read
// mode.
static inline void uvm_va_block_release(uvm_va_block_t *va_block)
{
if (va_block) {
@@ -986,9 +989,11 @@ NV_STATUS uvm_va_block_add_gpu_va_space(uvm_va_block_t *va_block, uvm_gpu_va_spa
// If mm != NULL, that mm is used for any CPU mappings which may be created as
// a result of this call. See uvm_va_block_context_t::mm for details.
//
// LOCKING: The caller must hold the va_block lock. If mm != NULL, the caller
// must hold mm->mmap_lock in at least read mode.
void uvm_va_block_remove_gpu_va_space(uvm_va_block_t *va_block, uvm_gpu_va_space_t *gpu_va_space, struct mm_struct *mm);
// LOCKING: The caller must hold the va_block lock. If block_context->mm is not
// NULL, the caller must hold mm->mmap_lock in at least read mode.
void uvm_va_block_remove_gpu_va_space(uvm_va_block_t *va_block,
uvm_gpu_va_space_t *gpu_va_space,
uvm_va_block_context_t *block_context);
// Creates any mappings necessary in this VA block between the two GPUs, in
// either direction.