goto out_free;
}
if (cpages != npages)
- pr_debug("partial migration, 0x%lx/0x%llx pages collected\n",
+ pr_debug("partial migration, 0x%lx/0x%llx pages migrated\n",
cpages, npages);
else
- pr_debug("0x%lx pages collected\n", cpages);
+ pr_debug("0x%lx pages migrated\n", cpages);
r = svm_migrate_copy_to_vram(node, prange, &migrate, &mfence, scratch, ttm_res_offset);
migrate_vma_pages(&migrate);
* svm_migrate_ram_to_vram - migrate svm range from system to device
* @prange: range structure
* @best_loc: the device to migrate to
- * @start_mgr: start page to migrate
- * @last_mgr: last page to migrate
* @mm: the process mm structure
* @trigger: reason of migration
*
*/
static int
svm_migrate_ram_to_vram(struct svm_range *prange, uint32_t best_loc,
- unsigned long start_mgr, unsigned long last_mgr,
struct mm_struct *mm, uint32_t trigger)
{
unsigned long addr, start, end;
unsigned long cpages = 0;
long r = 0;
- if (!best_loc) {
- pr_debug("svms 0x%p [0x%lx 0x%lx] migrate to sys ram\n",
- prange->svms, start_mgr, last_mgr);
+ if (prange->actual_loc == best_loc) {
+ pr_debug("svms 0x%p [0x%lx 0x%lx] already on best_loc 0x%x\n",
+ prange->svms, prange->start, prange->last, best_loc);
return 0;
}
- if (start_mgr < prange->start || last_mgr > prange->last) {
- pr_debug("range [0x%lx 0x%lx] out prange [0x%lx 0x%lx]\n",
- start_mgr, last_mgr, prange->start, prange->last);
- return -EFAULT;
- }
-
node = svm_range_get_node_by_id(prange, best_loc);
if (!node) {
pr_debug("failed to get kfd node by id 0x%x\n", best_loc);
return -ENODEV;
}
- pr_debug("svms 0x%p [0x%lx 0x%lx] in [0x%lx 0x%lx] to gpu 0x%x\n",
- prange->svms, start_mgr, last_mgr, prange->start, prange->last,
- best_loc);
+ pr_debug("svms 0x%p [0x%lx 0x%lx] to gpu 0x%x\n", prange->svms,
+ prange->start, prange->last, best_loc);
- start = start_mgr << PAGE_SHIFT;
- end = (last_mgr + 1) << PAGE_SHIFT;
+ start = prange->start << PAGE_SHIFT;
+ end = (prange->last + 1) << PAGE_SHIFT;
r = svm_range_vram_node_new(node, prange, true);
if (r) {
if (cpages) {
prange->actual_loc = best_loc;
- prange->vram_pages = prange->vram_pages + cpages;
- } else if (!prange->actual_loc) {
- /* if no page migrated and all pages from prange are at
- * sys ram drop svm_bo got from svm_range_vram_node_new
- */
+ svm_range_dma_unmap(prange);
+ } else {
svm_range_vram_node_free(prange);
}
* Context: Process context, caller hold mmap read lock, prange->migrate_mutex
*
* Return:
+ * 0 - success with all pages migrated
* negative values - indicate error
- * positive values or zero - number of pages got migrated
+ * positive values - partial migration, number of pages not migrated
*/
static long
svm_migrate_vma_to_ram(struct kfd_node *node, struct svm_range *prange,
uint64_t npages = (end - start) >> PAGE_SHIFT;
unsigned long upages = npages;
unsigned long cpages = 0;
- unsigned long mpages = 0;
struct amdgpu_device *adev = node->adev;
struct kfd_process_device *pdd;
struct dma_fence *mfence = NULL;
goto out_free;
}
if (cpages != npages)
- pr_debug("partial migration, 0x%lx/0x%llx pages collected\n",
+ pr_debug("partial migration, 0x%lx/0x%llx pages migrated\n",
cpages, npages);
else
- pr_debug("0x%lx pages collected\n", cpages);
+ pr_debug("0x%lx pages migrated\n", cpages);
r = svm_migrate_copy_to_ram(adev, prange, &migrate, &mfence,
scratch, npages);
kvfree(buf);
out:
if (!r && cpages) {
- mpages = cpages - upages;
pdd = svm_range_get_pdd_by_node(prange, node);
if (pdd)
- WRITE_ONCE(pdd->page_out, pdd->page_out + mpages);
+ WRITE_ONCE(pdd->page_out, pdd->page_out + cpages);
}
-
- return r ? r : mpages;
+ return r ? r : upages;
}
/**
* svm_migrate_vram_to_ram - migrate svm range from device to system
* @prange: range structure
* @mm: process mm, use current->mm if NULL
- * @start_mgr: start page need be migrated to sys ram
- * @last_mgr: last page need be migrated to sys ram
* @trigger: reason of migration
* @fault_page: is from vmf->page, svm_migrate_to_ram(), this is CPU page fault callback
*
* 0 - OK, otherwise error code
*/
int svm_migrate_vram_to_ram(struct svm_range *prange, struct mm_struct *mm,
- unsigned long start_mgr, unsigned long last_mgr,
uint32_t trigger, struct page *fault_page)
{
struct kfd_node *node;
unsigned long addr;
unsigned long start;
unsigned long end;
- unsigned long mpages = 0;
+ unsigned long upages = 0;
long r = 0;
- /* this pragne has no any vram page to migrate to sys ram */
if (!prange->actual_loc) {
pr_debug("[0x%lx 0x%lx] already migrated to ram\n",
prange->start, prange->last);
return 0;
}
- if (start_mgr < prange->start || last_mgr > prange->last) {
- pr_debug("range [0x%lx 0x%lx] out prange [0x%lx 0x%lx]\n",
- start_mgr, last_mgr, prange->start, prange->last);
- return -EFAULT;
- }
-
node = svm_range_get_node_by_id(prange, prange->actual_loc);
if (!node) {
pr_debug("failed to get kfd node by id 0x%x\n", prange->actual_loc);
return -ENODEV;
}
pr_debug("svms 0x%p prange 0x%p [0x%lx 0x%lx] from gpu 0x%x to ram\n",
- prange->svms, prange, start_mgr, last_mgr,
+ prange->svms, prange, prange->start, prange->last,
prange->actual_loc);
- start = start_mgr << PAGE_SHIFT;
- end = (last_mgr + 1) << PAGE_SHIFT;
+ start = prange->start << PAGE_SHIFT;
+ end = (prange->last + 1) << PAGE_SHIFT;
for (addr = start; addr < end;) {
unsigned long next;
pr_debug("failed %ld to migrate prange %p\n", r, prange);
break;
} else {
- mpages += r;
+ upages += r;
}
addr = next;
}
- if (r >= 0) {
- prange->vram_pages -= mpages;
-
- /* prange does not have vram page set its actual_loc to system
- * and drop its svm_bo ref
- */
- if (prange->vram_pages == 0 && prange->ttm_res) {
- prange->actual_loc = 0;
- svm_range_vram_node_free(prange);
- }
+ if (r >= 0 && !upages) {
+ svm_range_vram_node_free(prange);
+ prange->actual_loc = 0;
}
return r < 0 ? r : 0;
* svm_migrate_vram_to_vram - migrate svm range from device to device
* @prange: range structure
* @best_loc: the device to migrate to
- * @start: start page need be migrated to sys ram
- * @last: last page need be migrated to sys ram
* @mm: process mm, use current->mm if NULL
* @trigger: reason of migration
*
* Context: Process context, caller hold mmap read lock, svms lock, prange lock
*
- * migrate all vram pages in prange to sys ram, then migrate
- * [start, last] pages from sys ram to gpu node best_loc.
- *
* Return:
* 0 - OK, otherwise error code
*/
static int
svm_migrate_vram_to_vram(struct svm_range *prange, uint32_t best_loc,
- unsigned long start, unsigned long last,
- struct mm_struct *mm, uint32_t trigger)
+ struct mm_struct *mm, uint32_t trigger)
{
int r, retries = 3;
pr_debug("from gpu 0x%x to gpu 0x%x\n", prange->actual_loc, best_loc);
do {
- r = svm_migrate_vram_to_ram(prange, mm, prange->start, prange->last,
- trigger, NULL);
+ r = svm_migrate_vram_to_ram(prange, mm, trigger, NULL);
if (r)
return r;
} while (prange->actual_loc && --retries);
if (prange->actual_loc)
return -EDEADLK;
- return svm_migrate_ram_to_vram(prange, best_loc, start, last, mm, trigger);
+ return svm_migrate_ram_to_vram(prange, best_loc, mm, trigger);
}
int
svm_migrate_to_vram(struct svm_range *prange, uint32_t best_loc,
- unsigned long start, unsigned long last,
- struct mm_struct *mm, uint32_t trigger)
+ struct mm_struct *mm, uint32_t trigger)
{
- if (!prange->actual_loc || prange->actual_loc == best_loc)
- return svm_migrate_ram_to_vram(prange, best_loc, start, last,
- mm, trigger);
-
+ if (!prange->actual_loc)
+ return svm_migrate_ram_to_vram(prange, best_loc, mm, trigger);
else
- return svm_migrate_vram_to_vram(prange, best_loc, start, last,
- mm, trigger);
+ return svm_migrate_vram_to_vram(prange, best_loc, mm, trigger);
}
*/
static vm_fault_t svm_migrate_to_ram(struct vm_fault *vmf)
{
- unsigned long start, last, size;
unsigned long addr = vmf->address;
struct svm_range_bo *svm_bo;
+ enum svm_work_list_ops op;
+ struct svm_range *parent;
struct svm_range *prange;
struct kfd_process *p;
struct mm_struct *mm;
mutex_lock(&p->svms.lock);
- prange = svm_range_from_addr(&p->svms, addr, NULL);
+ prange = svm_range_from_addr(&p->svms, addr, &parent);
if (!prange) {
pr_debug("failed get range svms 0x%p addr 0x%lx\n", &p->svms, addr);
r = -EFAULT;
goto out_unlock_svms;
}
- mutex_lock(&prange->migrate_mutex);
+ mutex_lock(&parent->migrate_mutex);
+ if (prange != parent)
+ mutex_lock_nested(&prange->migrate_mutex, 1);
if (!prange->actual_loc)
goto out_unlock_prange;
- /* Align migration range start and size to granularity size */
- size = 1UL << prange->granularity;
- start = max(ALIGN_DOWN(addr, size), prange->start);
- last = min(ALIGN(addr + 1, size) - 1, prange->last);
+ svm_range_lock(parent);
+ if (prange != parent)
+ mutex_lock_nested(&prange->lock, 1);
+ r = svm_range_split_by_granularity(p, mm, addr, parent, prange);
+ if (prange != parent)
+ mutex_unlock(&prange->lock);
+ svm_range_unlock(parent);
+ if (r) {
+ pr_debug("failed %d to split range by granularity\n", r);
+ goto out_unlock_prange;
+ }
- r = svm_migrate_vram_to_ram(prange, vmf->vma->vm_mm, start, last,
- KFD_MIGRATE_TRIGGER_PAGEFAULT_CPU, vmf->page);
+ r = svm_migrate_vram_to_ram(prange, vmf->vma->vm_mm,
+ KFD_MIGRATE_TRIGGER_PAGEFAULT_CPU,
+ vmf->page);
if (r)
pr_debug("failed %d migrate svms 0x%p range 0x%p [0x%lx 0x%lx]\n",
- r, prange->svms, prange, start, last);
+ r, prange->svms, prange, prange->start, prange->last);
+
+ /* xnack on, update mapping on GPUs with ACCESS_IN_PLACE */
+ if (p->xnack_enabled && parent == prange)
+ op = SVM_OP_UPDATE_RANGE_NOTIFIER_AND_MAP;
+ else
+ op = SVM_OP_UPDATE_RANGE_NOTIFIER;
+ svm_range_add_list_work(&p->svms, parent, mm, op);
+ schedule_deferred_list_work(&p->svms);
out_unlock_prange:
- mutex_unlock(&prange->migrate_mutex);
+ if (prange != parent)
+ mutex_unlock(&prange->migrate_mutex);
+ mutex_unlock(&parent->migrate_mutex);
out_unlock_svms:
mutex_unlock(&p->svms.lock);
out_unref_process:
static int
svm_range_dma_map_dev(struct amdgpu_device *adev, struct svm_range *prange,
unsigned long offset, unsigned long npages,
- unsigned long *hmm_pfns, uint32_t gpuidx, uint64_t *vram_pages)
+ unsigned long *hmm_pfns, uint32_t gpuidx)
{
enum dma_data_direction dir = DMA_BIDIRECTIONAL;
dma_addr_t *addr = prange->dma_addr[gpuidx];
struct device *dev = adev->dev;
struct page *page;
- uint64_t vram_pages_dev;
int i, r;
if (!addr) {
prange->dma_addr[gpuidx] = addr;
}
- vram_pages_dev = 0;
addr += offset;
for (i = 0; i < npages; i++) {
if (svm_is_valid_dma_mapping_addr(dev, addr[i]))
if (is_zone_device_page(page)) {
struct amdgpu_device *bo_adev = prange->svm_bo->node->adev;
- vram_pages_dev++;
addr[i] = (hmm_pfns[i] << PAGE_SHIFT) +
bo_adev->vm_manager.vram_base_offset -
bo_adev->kfd.pgmap.range.start;
pr_debug_ratelimited("dma mapping 0x%llx for page addr 0x%lx\n",
addr[i] >> PAGE_SHIFT, page_to_pfn(page));
}
- *vram_pages = vram_pages_dev;
return 0;
}
static int
svm_range_dma_map(struct svm_range *prange, unsigned long *bitmap,
unsigned long offset, unsigned long npages,
- unsigned long *hmm_pfns, uint64_t *vram_pages)
+ unsigned long *hmm_pfns)
{
struct kfd_process *p;
uint32_t gpuidx;
}
r = svm_range_dma_map_dev(pdd->dev->adev, prange, offset, npages,
- hmm_pfns, gpuidx, vram_pages);
+ hmm_pfns, gpuidx);
if (r)
break;
}
INIT_LIST_HEAD(&prange->child_list);
atomic_set(&prange->invalid, 0);
prange->validate_timestamp = 0;
- prange->vram_pages = 0;
mutex_init(&prange->migrate_mutex);
mutex_init(&prange->lock);
prange->start, prange->last);
mutex_lock(&prange->lock);
prange->svm_bo = NULL;
- /* prange should not hold vram page now */
- WARN_ON(prange->actual_loc);
mutex_unlock(&prange->lock);
spin_lock(&svm_bo->list_lock);
new->svm_bo = svm_range_bo_ref(old->svm_bo);
new->ttm_res = old->ttm_res;
- /* set new's vram_pages as old range's now, the acurate vram_pages
- * will be updated during mapping
- */
- new->vram_pages = min(old->vram_pages, new->npages);
-
spin_lock(&new->svm_bo->list_lock);
list_add(&new->svm_bo_list, &new->svm_bo->range_list);
spin_unlock(&new->svm_bo->list_lock);
struct svm_validate_context *ctx;
unsigned long start, end, addr;
struct kfd_process *p;
- uint64_t vram_pages;
void *owner;
int32_t idx;
int r = 0;
}
}
- vram_pages = 0;
start = prange->start << PAGE_SHIFT;
end = (prange->last + 1) << PAGE_SHIFT;
for (addr = start; !r && addr < end; ) {
struct hmm_range *hmm_range;
struct vm_area_struct *vma;
- uint64_t vram_pages_vma;
unsigned long next = 0;
unsigned long offset;
unsigned long npages;
if (!r) {
offset = (addr - start) >> PAGE_SHIFT;
r = svm_range_dma_map(prange, ctx->bitmap, offset, npages,
- hmm_range->hmm_pfns, &vram_pages_vma);
+ hmm_range->hmm_pfns);
if (r)
pr_debug("failed %d to dma map range\n", r);
- else
- vram_pages += vram_pages_vma;
}
svm_range_lock(prange);
addr = next;
}
- if (addr == end) {
- prange->vram_pages = vram_pages;
-
- /* if prange does not include any vram page and it
- * has not released svm_bo drop its svm_bo reference
- * and set its actaul_loc to sys ram
- */
- if (!vram_pages && prange->ttm_res) {
- prange->actual_loc = 0;
- svm_range_vram_node_free(prange);
- }
- }
-
svm_range_unreserve_bos(ctx);
if (!r)
prange->validate_timestamp = ktime_get_boottime();
new->actual_loc = old->actual_loc;
new->granularity = old->granularity;
new->mapped_to_gpu = old->mapped_to_gpu;
- new->vram_pages = old->vram_pages;
bitmap_copy(new->bitmap_access, old->bitmap_access, MAX_GPU_INSTANCE);
bitmap_copy(new->bitmap_aip, old->bitmap_aip, MAX_GPU_INSTANCE);
uint32_t vmid, uint32_t node_id,
uint64_t addr, bool write_fault)
{
- unsigned long start, last, size;
struct mm_struct *mm = NULL;
struct svm_range_list *svms;
struct svm_range *prange;
kfd_smi_event_page_fault_start(node, p->lead_thread->pid, addr,
write_fault, timestamp);
- if (prange->actual_loc != 0 || best_loc != 0) {
+ if (prange->actual_loc != best_loc) {
migration = true;
- /* Align migration range start and size to granularity size */
- size = 1UL << prange->granularity;
- start = max_t(unsigned long, ALIGN_DOWN(addr, size), prange->start);
- last = min_t(unsigned long, ALIGN(addr + 1, size) - 1, prange->last);
-
if (best_loc) {
- r = svm_migrate_to_vram(prange, best_loc, start, last,
- mm, KFD_MIGRATE_TRIGGER_PAGEFAULT_GPU);
+ r = svm_migrate_to_vram(prange, best_loc, mm,
+ KFD_MIGRATE_TRIGGER_PAGEFAULT_GPU);
if (r) {
pr_debug("svm_migrate_to_vram failed (%d) at %llx, falling back to system memory\n",
r, addr);
/* Fallback to system memory if migration to
* VRAM failed
*/
- if (prange->actual_loc && prange->actual_loc != best_loc)
- r = svm_migrate_vram_to_ram(prange, mm, start, last,
- KFD_MIGRATE_TRIGGER_PAGEFAULT_GPU, NULL);
+ if (prange->actual_loc)
+ r = svm_migrate_vram_to_ram(prange, mm,
+ KFD_MIGRATE_TRIGGER_PAGEFAULT_GPU,
+ NULL);
else
r = 0;
}
} else {
- r = svm_migrate_vram_to_ram(prange, mm, start, last,
- KFD_MIGRATE_TRIGGER_PAGEFAULT_GPU, NULL);
+ r = svm_migrate_vram_to_ram(prange, mm,
+ KFD_MIGRATE_TRIGGER_PAGEFAULT_GPU,
+ NULL);
}
if (r) {
pr_debug("failed %d to migrate svms %p [0x%lx 0x%lx]\n",
- r, svms, start, last);
+ r, svms, prange->start, prange->last);
goto out_unlock_range;
}
}
*migrated = false;
best_loc = svm_range_best_prefetch_location(prange);
- /* when best_loc is a gpu node and same as prange->actual_loc
- * we still need do migration as prange->actual_loc !=0 does
- * not mean all pages in prange are vram. hmm migrate will pick
- * up right pages during migration.
- */
- if ((best_loc == KFD_IOCTL_SVM_LOCATION_UNDEFINED) ||
- (best_loc == 0 && prange->actual_loc == 0))
+ if (best_loc == KFD_IOCTL_SVM_LOCATION_UNDEFINED ||
+ best_loc == prange->actual_loc)
return 0;
if (!best_loc) {
- r = svm_migrate_vram_to_ram(prange, mm, prange->start, prange->last,
+ r = svm_migrate_vram_to_ram(prange, mm,
KFD_MIGRATE_TRIGGER_PREFETCH, NULL);
*migrated = !r;
return r;
}
- r = svm_migrate_to_vram(prange, best_loc, prange->start, prange->last,
- mm, KFD_MIGRATE_TRIGGER_PREFETCH);
+ r = svm_migrate_to_vram(prange, best_loc, mm, KFD_MIGRATE_TRIGGER_PREFETCH);
*migrated = !r;
return r;
mutex_lock(&prange->migrate_mutex);
do {
- /* migrate all vram pages in this prange to sys ram
- * after that prange->actual_loc should be zero
- */
r = svm_migrate_vram_to_ram(prange, mm,
- prange->start, prange->last,
KFD_MIGRATE_TRIGGER_TTM_EVICTION, NULL);
} while (!r && prange->actual_loc && --retries);
projects / linux-2.6-microblaze.git / commitdiff