[Patch v4 16/24] drm/amdkfd: CRIU implement gpu_id remapping
Rajneesh Bhardwaj
rajneesh.bhardwaj at amd.com
Thu Dec 23 00:37:03 UTC 2021
From: David Yat Sin <david.yatsin at amd.com>
When doing a restore on a different node, the gpu_id's on the restore
node may be different. But the user space application will still refer
use the original gpu_id's in the ioctl calls. Adding code to create a
gpu id mapping so that kfd can determine actual gpu_id during the user
ioctl's.
Signed-off-by: David Yat Sin <david.yatsin at amd.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj at amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 465 ++++++++++++------
drivers/gpu/drm/amd/amdkfd/kfd_events.c | 45 +-
drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 11 +
drivers/gpu/drm/amd/amdkfd/kfd_process.c | 32 ++
.../amd/amdkfd/kfd_process_queue_manager.c | 18 +-
5 files changed, 412 insertions(+), 159 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 08467fa2f514..20652d488cde 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -294,18 +294,20 @@ static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p,
return err;
pr_debug("Looking for gpu id 0x%x\n", args->gpu_id);
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev) {
- pr_debug("Could not find gpu id 0x%x\n", args->gpu_id);
- return -EINVAL;
- }
mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ pr_debug("Could not find gpu id 0x%x\n", args->gpu_id);
+ err = -EINVAL;
+ goto err_unlock;
+ }
+ dev = pdd->dev;
pdd = kfd_bind_process_to_device(dev, p);
if (IS_ERR(pdd)) {
err = -ESRCH;
- goto err_bind_process;
+ goto err_unlock;
}
pr_debug("Creating queue for PASID 0x%x on gpu 0x%x\n",
@@ -315,7 +317,7 @@ static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p,
err = pqm_create_queue(&p->pqm, dev, filep, &q_properties, &queue_id, NULL, NULL, NULL,
&doorbell_offset_in_process);
if (err != 0)
- goto err_create_queue;
+ goto err_unlock;
args->queue_id = queue_id;
@@ -344,8 +346,7 @@ static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p,
return 0;
-err_create_queue:
-err_bind_process:
+err_unlock:
mutex_unlock(&p->mutex);
return err;
}
@@ -492,7 +493,6 @@ static int kfd_ioctl_set_memory_policy(struct file *filep,
struct kfd_process *p, void *data)
{
struct kfd_ioctl_set_memory_policy_args *args = data;
- struct kfd_dev *dev;
int err = 0;
struct kfd_process_device *pdd;
enum cache_policy default_policy, alternate_policy;
@@ -507,13 +507,15 @@ static int kfd_ioctl_set_memory_policy(struct file *filep,
return -EINVAL;
}
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
- return -EINVAL;
-
mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ pr_debug("Could not find gpu id 0x%x\n", args->gpu_id);
+ err = -EINVAL;
+ goto out;
+ }
- pdd = kfd_bind_process_to_device(dev, p);
+ pdd = kfd_bind_process_to_device(pdd->dev, p);
if (IS_ERR(pdd)) {
err = -ESRCH;
goto out;
@@ -526,7 +528,7 @@ static int kfd_ioctl_set_memory_policy(struct file *filep,
(args->alternate_policy == KFD_IOC_CACHE_POLICY_COHERENT)
? cache_policy_coherent : cache_policy_noncoherent;
- if (!dev->dqm->ops.set_cache_memory_policy(dev->dqm,
+ if (!pdd->dev->dqm->ops.set_cache_memory_policy(pdd->dev->dqm,
&pdd->qpd,
default_policy,
alternate_policy,
@@ -544,17 +546,18 @@ static int kfd_ioctl_set_trap_handler(struct file *filep,
struct kfd_process *p, void *data)
{
struct kfd_ioctl_set_trap_handler_args *args = data;
- struct kfd_dev *dev;
int err = 0;
struct kfd_process_device *pdd;
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
- return -EINVAL;
-
mutex_lock(&p->mutex);
- pdd = kfd_bind_process_to_device(dev, p);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ pdd = kfd_bind_process_to_device(pdd->dev, p);
if (IS_ERR(pdd)) {
err = -ESRCH;
goto out;
@@ -578,16 +581,20 @@ static int kfd_ioctl_dbg_register(struct file *filep,
bool create_ok;
long status = 0;
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
- return -EINVAL;
+ mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ status = -EINVAL;
+ goto out_unlock_p;
+ }
+ dev = pdd->dev;
if (dev->adev->asic_type == CHIP_CARRIZO) {
pr_debug("kfd_ioctl_dbg_register not supported on CZ\n");
- return -EINVAL;
+ status = -EINVAL;
+ goto out_unlock_p;
}
- mutex_lock(&p->mutex);
mutex_lock(kfd_get_dbgmgr_mutex());
/*
@@ -597,7 +604,7 @@ static int kfd_ioctl_dbg_register(struct file *filep,
pdd = kfd_bind_process_to_device(dev, p);
if (IS_ERR(pdd)) {
status = PTR_ERR(pdd);
- goto out;
+ goto out_unlock_dbg;
}
if (!dev->dbgmgr) {
@@ -615,8 +622,9 @@ static int kfd_ioctl_dbg_register(struct file *filep,
status = -EINVAL;
}
-out:
+out_unlock_dbg:
mutex_unlock(kfd_get_dbgmgr_mutex());
+out_unlock_p:
mutex_unlock(&p->mutex);
return status;
@@ -626,12 +634,18 @@ static int kfd_ioctl_dbg_unregister(struct file *filep,
struct kfd_process *p, void *data)
{
struct kfd_ioctl_dbg_unregister_args *args = data;
+ struct kfd_process_device *pdd;
struct kfd_dev *dev;
long status;
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev || !dev->dbgmgr)
+ mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd || !pdd->dev->dbgmgr) {
+ mutex_unlock(&p->mutex);
return -EINVAL;
+ }
+ dev = pdd->dev;
+ mutex_unlock(&p->mutex);
if (dev->adev->asic_type == CHIP_CARRIZO) {
pr_debug("kfd_ioctl_dbg_unregister not supported on CZ\n");
@@ -665,6 +679,7 @@ static int kfd_ioctl_dbg_address_watch(struct file *filep,
{
struct kfd_ioctl_dbg_address_watch_args *args = data;
struct kfd_dev *dev;
+ struct kfd_process_device *pdd;
struct dbg_address_watch_info aw_info;
unsigned char *args_buff;
long status;
@@ -674,15 +689,20 @@ static int kfd_ioctl_dbg_address_watch(struct file *filep,
memset((void *) &aw_info, 0, sizeof(struct dbg_address_watch_info));
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
+ mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ mutex_unlock(&p->mutex);
+ pr_debug("Could not find gpu id 0x%x\n", args->gpu_id);
return -EINVAL;
+ }
+ dev = pdd->dev;
+ mutex_unlock(&p->mutex);
if (dev->adev->asic_type == CHIP_CARRIZO) {
pr_debug("kfd_ioctl_dbg_wave_control not supported on CZ\n");
return -EINVAL;
}
-
cmd_from_user = (void __user *) args->content_ptr;
/* Validate arguments */
@@ -765,6 +785,7 @@ static int kfd_ioctl_dbg_wave_control(struct file *filep,
{
struct kfd_ioctl_dbg_wave_control_args *args = data;
struct kfd_dev *dev;
+ struct kfd_process_device *pdd;
struct dbg_wave_control_info wac_info;
unsigned char *args_buff;
uint32_t computed_buff_size;
@@ -782,9 +803,15 @@ static int kfd_ioctl_dbg_wave_control(struct file *filep,
sizeof(wac_info.dbgWave_msg.MemoryVA) +
sizeof(wac_info.trapId);
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
+ mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ mutex_unlock(&p->mutex);
+ pr_debug("Could not find gpu id 0x%x\n", args->gpu_id);
return -EINVAL;
+ }
+ dev = pdd->dev;
+ mutex_unlock(&p->mutex);
if (dev->adev->asic_type == CHIP_CARRIZO) {
pr_debug("kfd_ioctl_dbg_wave_control not supported on CZ\n");
@@ -848,16 +875,19 @@ static int kfd_ioctl_get_clock_counters(struct file *filep,
struct kfd_process *p, void *data)
{
struct kfd_ioctl_get_clock_counters_args *args = data;
- struct kfd_dev *dev;
+ struct kfd_process_device *pdd;
- dev = kfd_device_by_id(args->gpu_id);
- if (dev)
+ mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (pdd)
/* Reading GPU clock counter from KGD */
- args->gpu_clock_counter = amdgpu_amdkfd_get_gpu_clock_counter(dev->adev);
+ args->gpu_clock_counter = amdgpu_amdkfd_get_gpu_clock_counter(pdd->dev->adev);
else
/* Node without GPU resource */
args->gpu_clock_counter = 0;
+ mutex_unlock(&p->mutex);
+
/* No access to rdtsc. Using raw monotonic time */
args->cpu_clock_counter = ktime_get_raw_ns();
args->system_clock_counter = ktime_get_boottime_ns();
@@ -1071,11 +1101,13 @@ static int kfd_ioctl_set_scratch_backing_va(struct file *filep,
struct kfd_dev *dev;
long err;
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
- return -EINVAL;
-
mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ err = -EINVAL;
+ goto bind_process_to_device_fail;
+ }
+ dev = pdd->dev;
pdd = kfd_bind_process_to_device(dev, p);
if (IS_ERR(pdd)) {
@@ -1103,15 +1135,19 @@ static int kfd_ioctl_get_tile_config(struct file *filep,
struct kfd_process *p, void *data)
{
struct kfd_ioctl_get_tile_config_args *args = data;
- struct kfd_dev *dev;
+ struct kfd_process_device *pdd;
struct tile_config config;
int err = 0;
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
+ mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ mutex_unlock(&p->mutex);
return -EINVAL;
+ }
+ mutex_unlock(&p->mutex);
- amdgpu_amdkfd_get_tile_config(dev->adev, &config);
+ amdgpu_amdkfd_get_tile_config(pdd->dev->adev, &config);
args->gb_addr_config = config.gb_addr_config;
args->num_banks = config.num_banks;
@@ -1146,21 +1182,15 @@ static int kfd_ioctl_acquire_vm(struct file *filep, struct kfd_process *p,
{
struct kfd_ioctl_acquire_vm_args *args = data;
struct kfd_process_device *pdd;
- struct kfd_dev *dev;
struct file *drm_file;
int ret;
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
- return -EINVAL;
-
drm_file = fget(args->drm_fd);
if (!drm_file)
return -EINVAL;
mutex_lock(&p->mutex);
-
- pdd = kfd_get_process_device_data(dev, p);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
if (!pdd) {
ret = -EINVAL;
goto err_unlock;
@@ -1236,19 +1266,23 @@ static int kfd_ioctl_alloc_memory_of_gpu(struct file *filep,
}
mutex_unlock(&p->svms.lock);
#endif
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
- return -EINVAL;
+ mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ err = -EINVAL;
+ goto err_unlock;
+ }
+
+ dev = pdd->dev;
if ((flags & KFD_IOC_ALLOC_MEM_FLAGS_PUBLIC) &&
(flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) &&
!kfd_dev_is_large_bar(dev)) {
pr_err("Alloc host visible vram on small bar is not allowed\n");
- return -EINVAL;
+ err = -EINVAL;
+ goto err_unlock;
}
- mutex_lock(&p->mutex);
-
pdd = kfd_bind_process_to_device(dev, p);
if (IS_ERR(pdd)) {
err = PTR_ERR(pdd);
@@ -1319,14 +1353,9 @@ static int kfd_ioctl_free_memory_of_gpu(struct file *filep,
struct kfd_ioctl_free_memory_of_gpu_args *args = data;
struct kfd_process_device *pdd;
void *mem;
- struct kfd_dev *dev;
int ret;
uint64_t size = 0;
- dev = kfd_device_by_id(GET_GPU_ID(args->handle));
- if (!dev)
- return -EINVAL;
-
mutex_lock(&p->mutex);
/*
* Safeguard to prevent user space from freeing signal BO.
@@ -1338,7 +1367,7 @@ static int kfd_ioctl_free_memory_of_gpu(struct file *filep,
goto err_unlock;
}
- pdd = kfd_get_process_device_data(dev, p);
+ pdd = kfd_process_device_data_by_id(p, GET_GPU_ID(args->handle));
if (!pdd) {
pr_err("Process device data doesn't exist\n");
ret = -EINVAL;
@@ -1352,7 +1381,7 @@ static int kfd_ioctl_free_memory_of_gpu(struct file *filep,
goto err_unlock;
}
- ret = amdgpu_amdkfd_gpuvm_free_memory_of_gpu(dev->adev,
+ ret = amdgpu_amdkfd_gpuvm_free_memory_of_gpu(pdd->dev->adev,
(struct kgd_mem *)mem, pdd->drm_priv, &size);
/* If freeing the buffer failed, leave the handle in place for
@@ -1375,16 +1404,12 @@ static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
struct kfd_ioctl_map_memory_to_gpu_args *args = data;
struct kfd_process_device *pdd, *peer_pdd;
void *mem;
- struct kfd_dev *dev, *peer;
+ struct kfd_dev *dev;
long err = 0;
int i;
uint32_t *devices_arr = NULL;
bool table_freed = false;
- dev = kfd_device_by_id(GET_GPU_ID(args->handle));
- if (!dev)
- return -EINVAL;
-
if (!args->n_devices) {
pr_debug("Device IDs array empty\n");
return -EINVAL;
@@ -1408,6 +1433,12 @@ static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
}
mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, GET_GPU_ID(args->handle));
+ if (!pdd) {
+ err = -EINVAL;
+ goto get_process_device_data_failed;
+ }
+ dev = pdd->dev;
pdd = kfd_bind_process_to_device(dev, p);
if (IS_ERR(pdd)) {
@@ -1423,21 +1454,21 @@ static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
}
for (i = args->n_success; i < args->n_devices; i++) {
- peer = kfd_device_by_id(devices_arr[i]);
- if (!peer) {
+ peer_pdd = kfd_process_device_data_by_id(p, devices_arr[i]);
+ if (!peer_pdd) {
pr_debug("Getting device by id failed for 0x%x\n",
devices_arr[i]);
err = -EINVAL;
goto get_mem_obj_from_handle_failed;
}
- peer_pdd = kfd_bind_process_to_device(peer, p);
+ peer_pdd = kfd_bind_process_to_device(peer_pdd->dev, p);
if (IS_ERR(peer_pdd)) {
err = PTR_ERR(peer_pdd);
goto get_mem_obj_from_handle_failed;
}
err = amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
- peer->adev, (struct kgd_mem *)mem,
+ peer_pdd->dev->adev, (struct kgd_mem *)mem,
peer_pdd->drm_priv, &table_freed);
if (err) {
pr_err("Failed to map to gpu %d/%d\n",
@@ -1458,10 +1489,7 @@ static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
/* Flush TLBs after waiting for the page table updates to complete */
if (table_freed) {
for (i = 0; i < args->n_devices; i++) {
- peer = kfd_device_by_id(devices_arr[i]);
- if (WARN_ON_ONCE(!peer))
- continue;
- peer_pdd = kfd_get_process_device_data(peer, p);
+ peer_pdd = kfd_process_device_data_by_id(p, devices_arr[i]);
if (WARN_ON_ONCE(!peer_pdd))
continue;
kfd_flush_tlb(peer_pdd, TLB_FLUSH_LEGACY);
@@ -1471,6 +1499,7 @@ static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
return err;
+get_process_device_data_failed:
bind_process_to_device_failed:
get_mem_obj_from_handle_failed:
map_memory_to_gpu_failed:
@@ -1488,14 +1517,9 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
struct kfd_ioctl_unmap_memory_from_gpu_args *args = data;
struct kfd_process_device *pdd, *peer_pdd;
void *mem;
- struct kfd_dev *dev, *peer;
long err = 0;
uint32_t *devices_arr = NULL, i;
- dev = kfd_device_by_id(GET_GPU_ID(args->handle));
- if (!dev)
- return -EINVAL;
-
if (!args->n_devices) {
pr_debug("Device IDs array empty\n");
return -EINVAL;
@@ -1519,8 +1543,7 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
}
mutex_lock(&p->mutex);
-
- pdd = kfd_get_process_device_data(dev, p);
+ pdd = kfd_process_device_data_by_id(p, GET_GPU_ID(args->handle));
if (!pdd) {
err = -EINVAL;
goto bind_process_to_device_failed;
@@ -1534,19 +1557,14 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
}
for (i = args->n_success; i < args->n_devices; i++) {
- peer = kfd_device_by_id(devices_arr[i]);
- if (!peer) {
+ peer_pdd = kfd_process_device_data_by_id(p, devices_arr[i]);
+ if (!peer_pdd) {
err = -EINVAL;
goto get_mem_obj_from_handle_failed;
}
- peer_pdd = kfd_get_process_device_data(peer, p);
- if (!peer_pdd) {
- err = -ENODEV;
- goto get_mem_obj_from_handle_failed;
- }
err = amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
- peer->adev, (struct kgd_mem *)mem, peer_pdd->drm_priv);
+ peer_pdd->dev->adev, (struct kgd_mem *)mem, peer_pdd->drm_priv);
if (err) {
pr_err("Failed to unmap from gpu %d/%d\n",
i, args->n_devices);
@@ -1556,8 +1574,8 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
}
mutex_unlock(&p->mutex);
- if (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 2)) {
- err = amdgpu_amdkfd_gpuvm_sync_memory(dev->adev,
+ if (KFD_GC_VERSION(pdd->dev) == IP_VERSION(9, 4, 2)) {
+ err = amdgpu_amdkfd_gpuvm_sync_memory(pdd->dev->adev,
(struct kgd_mem *) mem, true);
if (err) {
pr_debug("Sync memory failed, wait interrupted by user signal\n");
@@ -1566,10 +1584,7 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
/* Flush TLBs after waiting for the page table updates to complete */
for (i = 0; i < args->n_devices; i++) {
- peer = kfd_device_by_id(devices_arr[i]);
- if (WARN_ON_ONCE(!peer))
- continue;
- peer_pdd = kfd_get_process_device_data(peer, p);
+ peer_pdd = kfd_process_device_data_by_id(p, devices_arr[i]);
if (WARN_ON_ONCE(!peer_pdd))
continue;
kfd_flush_tlb(peer_pdd, TLB_FLUSH_HEAVYWEIGHT);
@@ -1695,23 +1710,26 @@ static int kfd_ioctl_import_dmabuf(struct file *filep,
void *mem;
int r;
- dev = kfd_device_by_id(args->gpu_id);
- if (!dev)
- return -EINVAL;
+ mutex_lock(&p->mutex);
+ pdd = kfd_process_device_data_by_id(p, args->gpu_id);
+ if (!pdd) {
+ r = -EINVAL;
+ goto err_unlock;
+ }
dmabuf = dma_buf_get(args->dmabuf_fd);
- if (IS_ERR(dmabuf))
- return PTR_ERR(dmabuf);
-
- mutex_lock(&p->mutex);
+ if (IS_ERR(dmabuf)) {
+ r = PTR_ERR(dmabuf);
+ goto err_unlock;
+ }
- pdd = kfd_bind_process_to_device(dev, p);
+ pdd = kfd_bind_process_to_device(pdd->dev, p);
if (IS_ERR(pdd)) {
r = PTR_ERR(pdd);
goto err_unlock;
}
- r = amdgpu_amdkfd_gpuvm_import_dmabuf(dev->adev, dmabuf,
+ r = amdgpu_amdkfd_gpuvm_import_dmabuf(pdd->dev->adev, dmabuf,
args->va_addr, pdd->drm_priv,
(struct kgd_mem **)&mem, &size,
NULL);
@@ -1745,13 +1763,19 @@ static int kfd_ioctl_smi_events(struct file *filep,
struct kfd_process *p, void *data)
{
struct kfd_ioctl_smi_events_args *args = data;
- struct kfd_dev *dev;
+ struct kfd_process_device *pdd;
- dev = kfd_device_by_id(args->gpuid);
- if (!dev)
+ mutex_lock(&p->mutex);
+
+ pdd = kfd_process_device_data_by_id(p, args->gpuid);
+ if (!pdd) {
+ mutex_unlock(&p->mutex);
return -EINVAL;
+ }
+
+ mutex_unlock(&p->mutex);
- return kfd_smi_event_open(dev, &args->anon_fd);
+ return kfd_smi_event_open(pdd->dev, &args->anon_fd);
}
static int kfd_ioctl_set_xnack_mode(struct file *filep,
@@ -1832,6 +1856,62 @@ static int criu_checkpoint_process(struct kfd_process *p,
return ret;
}
+static int criu_checkpoint_devices(struct kfd_process *p,
+ uint32_t num_devices,
+ uint8_t __user *user_addr,
+ uint8_t __user *user_priv_data,
+ uint64_t *priv_offset)
+{
+ struct kfd_criu_device_priv_data *device_priv = NULL;
+ struct kfd_criu_device_bucket *device_buckets = NULL;
+ int ret = 0, i;
+
+ device_buckets = kvzalloc(num_devices * sizeof(*device_buckets), GFP_KERNEL);
+ if (!device_buckets) {
+ ret = -ENOMEM;
+ goto exit;
+ }
+
+ device_priv = kvzalloc(num_devices * sizeof(*device_priv), GFP_KERNEL);
+ if (!device_priv) {
+ ret = -ENOMEM;
+ goto exit;
+ }
+
+ for (i = 0; i < num_devices; i++) {
+ struct kfd_process_device *pdd = p->pdds[i];
+
+ device_buckets[i].user_gpu_id = pdd->user_gpu_id;
+ device_buckets[i].actual_gpu_id = pdd->dev->id;
+
+ /*
+ * priv_data does not contain useful information for now and is reserved for
+ * future use, so we do not set its contents.
+ */
+ }
+
+ ret = copy_to_user(user_addr, device_buckets, num_devices * sizeof(*device_buckets));
+ if (ret) {
+ pr_err("Failed to copy device information to user\n");
+ ret = -EFAULT;
+ goto exit;
+ }
+
+ ret = copy_to_user(user_priv_data + *priv_offset,
+ device_priv,
+ num_devices * sizeof(*device_priv));
+ if (ret) {
+ pr_err("Failed to copy device information to user\n");
+ ret = -EFAULT;
+ }
+ *priv_offset += num_devices * sizeof(*device_priv);
+
+exit:
+ kvfree(device_buckets);
+ kvfree(device_priv);
+ return ret;
+}
+
uint64_t get_process_num_bos(struct kfd_process *p)
{
uint64_t num_of_bos = 0, i;
@@ -1898,9 +1978,9 @@ static int criu_checkpoint_bos(struct kfd_process *p,
bo_bucket = &bo_buckets[bo_index];
bo_priv = &bo_privs[bo_index];
+ bo_bucket->gpu_id = pdd->user_gpu_id;
bo_bucket->addr = (uint64_t)kgd_mem->va;
bo_bucket->size = amdgpu_bo_size(dumper_bo);
- bo_bucket->gpu_id = pdd->dev->id;
bo_bucket->alloc_flags = (uint32_t)kgd_mem->alloc_flags;
bo_priv->idr_handle = id;
@@ -1958,6 +2038,7 @@ static int criu_checkpoint_bos(struct kfd_process *p,
}
static int criu_get_process_object_info(struct kfd_process *p,
+ uint32_t *num_devices,
uint32_t *num_bos,
uint32_t *num_objects,
uint64_t *objs_priv_size)
@@ -1967,6 +2048,7 @@ static int criu_get_process_object_info(struct kfd_process *p,
uint32_t num_queues, num_events, num_svm_ranges;
uint64_t queues_priv_data_size;
+ *num_devices = p->n_pdds;
*num_bos = get_process_num_bos(p);
ret = kfd_process_get_queue_info(p, &num_queues, &queues_priv_data_size);
@@ -1980,6 +2062,7 @@ static int criu_get_process_object_info(struct kfd_process *p,
if (objs_priv_size) {
priv_size = sizeof(struct kfd_criu_process_priv_data);
+ priv_size += *num_devices * sizeof(struct kfd_criu_device_priv_data);
priv_size += *num_bos * sizeof(struct kfd_criu_bo_priv_data);
priv_size += queues_priv_data_size;
priv_size += num_events * sizeof(struct kfd_criu_event_priv_data);
@@ -1994,10 +2077,10 @@ static int criu_checkpoint(struct file *filep,
struct kfd_ioctl_criu_args *args)
{
int ret;
- uint32_t num_bos, num_objects;
+ uint32_t num_devices, num_bos, num_objects;
uint64_t priv_size, priv_offset = 0;
- if (!args->bos || !args->priv_data)
+ if (!args->devices || !args->bos || !args->priv_data)
return -EINVAL;
mutex_lock(&p->mutex);
@@ -2016,11 +2099,12 @@ static int criu_checkpoint(struct file *filep,
goto exit_unlock;
}
- ret = criu_get_process_object_info(p, &num_bos, &num_objects, &priv_size);
+ ret = criu_get_process_object_info(p, &num_devices, &num_bos, &num_objects, &priv_size);
if (ret)
goto exit_unlock;
- if (num_bos != args->num_bos ||
+ if (num_devices != args->num_devices ||
+ num_bos != args->num_bos ||
num_objects != args->num_objects ||
priv_size != args->priv_data_size) {
@@ -2033,6 +2117,11 @@ static int criu_checkpoint(struct file *filep,
if (ret)
goto exit_unlock;
+ ret = criu_checkpoint_devices(p, num_devices, (uint8_t __user *)args->devices,
+ (uint8_t __user *)args->priv_data, &priv_offset);
+ if (ret)
+ goto exit_unlock;
+
ret = criu_checkpoint_bos(p, num_bos, (uint8_t __user *)args->bos,
(uint8_t __user *)args->priv_data, &priv_offset);
if (ret)
@@ -2093,6 +2182,108 @@ static int criu_restore_process(struct kfd_process *p,
return ret;
}
+static int criu_restore_devices(struct kfd_process *p,
+ struct kfd_ioctl_criu_args *args,
+ uint64_t *priv_offset,
+ uint64_t max_priv_data_size)
+{
+ struct kfd_criu_device_bucket *device_buckets;
+ struct kfd_criu_device_priv_data *device_privs;
+ int ret = 0;
+ uint32_t i;
+
+ if (args->num_devices != p->n_pdds)
+ return -EINVAL;
+
+ if (*priv_offset + (args->num_devices * sizeof(*device_privs)) > max_priv_data_size)
+ return -EINVAL;
+
+ device_buckets = kmalloc_array(args->num_devices, sizeof(*device_buckets), GFP_KERNEL);
+ if (!device_buckets)
+ return -ENOMEM;
+
+ ret = copy_from_user(device_buckets, (void __user *)args->devices,
+ args->num_devices * sizeof(*device_buckets));
+ if (ret) {
+ pr_err("Failed to copy devices buckets from user\n");
+ ret = -EFAULT;
+ goto exit;
+ }
+
+ for (i = 0; i < args->num_devices; i++) {
+ struct kfd_dev *dev;
+ struct kfd_process_device *pdd;
+ struct file *drm_file;
+
+ /* device private data is not currently used */
+
+ if (!device_buckets[i].user_gpu_id) {
+ pr_err("Invalid user gpu_id\n");
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ dev = kfd_device_by_id(device_buckets[i].actual_gpu_id);
+ if (!dev) {
+ pr_err("Failed to find device with gpu_id = %x\n",
+ device_buckets[i].actual_gpu_id);
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ pdd = kfd_get_process_device_data(dev, p);
+ if (!pdd) {
+ pr_err("Failed to get pdd for gpu_id = %x\n",
+ device_buckets[i].actual_gpu_id);
+ ret = -EINVAL;
+ goto exit;
+ }
+ pdd->user_gpu_id = device_buckets[i].user_gpu_id;
+
+ drm_file = fget(device_buckets[i].drm_fd);
+ if (!drm_file) {
+ pr_err("Invalid render node file descriptor sent from plugin (%d)\n",
+ device_buckets[i].drm_fd);
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ if (pdd->drm_file) {
+ ret = -EINVAL;
+ goto exit;
+ }
+
+ /* create the vm using render nodes for kfd pdd */
+ if (kfd_process_device_init_vm(pdd, drm_file)) {
+ pr_err("could not init vm for given pdd\n");
+ /* On success, the PDD keeps the drm_file reference */
+ fput(drm_file);
+ ret = -EINVAL;
+ goto exit;
+ }
+ /*
+ * pdd now already has the vm bound to render node so below api won't create a new
+ * exclusive kfd mapping but use existing one with renderDXXX but is still needed
+ * for iommu v2 binding and runtime pm.
+ */
+ pdd = kfd_bind_process_to_device(dev, p);
+ if (IS_ERR(pdd)) {
+ ret = PTR_ERR(pdd);
+ goto exit;
+ }
+ }
+
+ /*
+ * We are not copying device private data from user as we are not using the data for now,
+ * but we still adjust for its private data.
+ */
+ *priv_offset += args->num_devices * sizeof(*device_privs);
+
+exit:
+ kfree(device_buckets);
+ return ret;
+}
+
static int criu_restore_bos(struct kfd_process *p,
struct kfd_ioctl_criu_args *args,
uint64_t *priv_offset,
@@ -2151,19 +2342,6 @@ static int criu_restore_bos(struct kfd_process *p,
bo_bucket = &bo_buckets[i];
bo_priv = &bo_privs[i];
- dev = kfd_device_by_id(bo_bucket->gpu_id);
- if (!dev) {
- ret = -EINVAL;
- pr_err("Failed to get pdd\n");
- goto exit;
- }
- pdd = kfd_get_process_device_data(dev, p);
- if (!pdd) {
- ret = -EINVAL;
- pr_err("Failed to get pdd\n");
- goto exit;
- }
-
pr_debug("kfd restore ioctl - bo_bucket[%d]:\n", i);
pr_debug("size = 0x%llx, bo_addr = 0x%llx bo_offset = 0x%llx\n"
"gpu_id = 0x%x alloc_flags = 0x%x\n"
@@ -2175,6 +2353,14 @@ static int criu_restore_bos(struct kfd_process *p,
bo_bucket->alloc_flags,
bo_priv->idr_handle);
+ pdd = kfd_process_device_data_by_id(p, bo_bucket->gpu_id);
+ if (!pdd) {
+ pr_err("Failed to get pdd\n");
+ ret = -ENODEV;
+ goto exit;
+ }
+ dev = pdd->dev;
+
if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL) {
pr_debug("restore ioctl: KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL\n");
if (bo_bucket->size != kfd_doorbell_process_slice(dev)) {
@@ -2408,6 +2594,10 @@ static int criu_restore(struct file *filep,
if (ret)
goto exit_unlock;
+ ret = criu_restore_devices(p, args, &priv_offset, args->priv_data_size);
+ if (ret)
+ goto exit_unlock;
+
ret = criu_restore_bos(p, args, &priv_offset, args->priv_data_size);
if (ret)
goto exit_unlock;
@@ -2513,13 +2703,14 @@ static int criu_process_info(struct file *filep,
args->pid = task_pid_nr_ns(p->lead_thread,
task_active_pid_ns(p->lead_thread));
- ret = criu_get_process_object_info(p, &args->num_bos, &args->num_objects,
- &args->priv_data_size);
+ ret = criu_get_process_object_info(p, &args->num_devices, &args->num_bos,
+ &args->num_objects, &args->priv_data_size);
if (ret)
goto err_unlock;
- dev_dbg(kfd_device, "Num of bos:%u objects:%u priv_data_size:%lld\n",
- args->num_bos, args->num_objects, args->priv_data_size);
+ dev_dbg(kfd_device, "Num of devices:%u bos:%u objects:%u priv_data_size:%lld\n",
+ args->num_devices, args->num_bos, args->num_objects,
+ args->priv_data_size);
err_unlock:
if (ret) {
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
index acd8cdf1324e..3d7f997420c4 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_events.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
@@ -342,11 +342,12 @@ int kfd_kmap_event_page(struct kfd_process *p, uint64_t event_page_offset)
return -EINVAL;
}
- kfd = kfd_device_by_id(GET_GPU_ID(event_page_offset));
- if (!kfd) {
+ pdd = kfd_process_device_data_by_id(p, GET_GPU_ID(event_page_offset));
+ if (!pdd) {
pr_err("Getting device by id failed in %s\n", __func__);
return -EINVAL;
}
+ kfd = pdd->dev;
pdd = kfd_bind_process_to_device(kfd, p);
if (IS_ERR(pdd))
@@ -1094,6 +1095,7 @@ void kfd_signal_iommu_event(struct kfd_dev *dev, u32 pasid,
{
struct kfd_hsa_memory_exception_data memory_exception_data;
struct vm_area_struct *vma;
+ int user_gpu_id;
/*
* Because we are called from arbitrary context (workqueue) as opposed
@@ -1115,12 +1117,17 @@ void kfd_signal_iommu_event(struct kfd_dev *dev, u32 pasid,
return; /* Process is exiting */
}
+ user_gpu_id = kfd_process_get_user_gpu_id(p, dev->id);
+ if (unlikely(user_gpu_id == -EINVAL)) {
+ WARN_ONCE(1, "Could not get user_gpu_id from dev->id:%x\n", dev->id);
+ return;
+ }
memset(&memory_exception_data, 0, sizeof(memory_exception_data));
mmap_read_lock(mm);
vma = find_vma(mm, address);
- memory_exception_data.gpu_id = dev->id;
+ memory_exception_data.gpu_id = user_gpu_id;
memory_exception_data.va = address;
/* Set failure reason */
memory_exception_data.failure.NotPresent = 1;
@@ -1196,11 +1203,19 @@ void kfd_signal_vm_fault_event(struct kfd_dev *dev, u32 pasid,
uint32_t id;
struct kfd_process *p = kfd_lookup_process_by_pasid(pasid);
struct kfd_hsa_memory_exception_data memory_exception_data;
+ int user_gpu_id;
if (!p)
return; /* Presumably process exited. */
+
+ user_gpu_id = kfd_process_get_user_gpu_id(p, dev->id);
+ if (unlikely(user_gpu_id == -EINVAL)) {
+ WARN_ONCE(1, "Could not get user_gpu_id from dev->id:%x\n", dev->id);
+ return;
+ }
+
memset(&memory_exception_data, 0, sizeof(memory_exception_data));
- memory_exception_data.gpu_id = dev->id;
+ memory_exception_data.gpu_id = user_gpu_id;
memory_exception_data.failure.imprecise = true;
/* Set failure reason */
if (info) {
@@ -1240,27 +1255,34 @@ void kfd_signal_reset_event(struct kfd_dev *dev)
/* Whole gpu reset caused by GPU hang and memory is lost */
memset(&hw_exception_data, 0, sizeof(hw_exception_data));
- hw_exception_data.gpu_id = dev->id;
hw_exception_data.memory_lost = 1;
hw_exception_data.reset_cause = reset_cause;
memset(&memory_exception_data, 0, sizeof(memory_exception_data));
memory_exception_data.ErrorType = KFD_MEM_ERR_SRAM_ECC;
- memory_exception_data.gpu_id = dev->id;
memory_exception_data.failure.imprecise = true;
idx = srcu_read_lock(&kfd_processes_srcu);
hash_for_each_rcu(kfd_processes_table, temp, p, kfd_processes) {
+ int user_gpu_id = kfd_process_get_user_gpu_id(p, dev->id);
+
+ if (unlikely(user_gpu_id == -EINVAL)) {
+ WARN_ONCE(1, "Could not get user_gpu_id from dev->id:%x\n", dev->id);
+ continue;
+ }
+
mutex_lock(&p->event_mutex);
id = KFD_FIRST_NONSIGNAL_EVENT_ID;
idr_for_each_entry_continue(&p->event_idr, ev, id) {
if (ev->type == KFD_EVENT_TYPE_HW_EXCEPTION) {
ev->hw_exception_data = hw_exception_data;
+ ev->hw_exception_data.gpu_id = user_gpu_id;
set_event(ev);
}
if (ev->type == KFD_EVENT_TYPE_MEMORY &&
reset_cause == KFD_HW_EXCEPTION_ECC) {
ev->memory_exception_data = memory_exception_data;
+ ev->memory_exception_data.gpu_id = user_gpu_id;
set_event(ev);
}
}
@@ -1276,18 +1298,25 @@ void kfd_signal_poison_consumed_event(struct kfd_dev *dev, u32 pasid)
struct kfd_hsa_hw_exception_data hw_exception_data;
struct kfd_event *ev;
uint32_t id = KFD_FIRST_NONSIGNAL_EVENT_ID;
+ int user_gpu_id;
if (!p)
return; /* Presumably process exited. */
+ user_gpu_id = kfd_process_get_user_gpu_id(p, dev->id);
+ if (unlikely(user_gpu_id == -EINVAL)) {
+ WARN_ONCE(1, "Could not get user_gpu_id from dev->id:%x\n", dev->id);
+ return;
+ }
+
memset(&hw_exception_data, 0, sizeof(hw_exception_data));
- hw_exception_data.gpu_id = dev->id;
+ hw_exception_data.gpu_id = user_gpu_id;
hw_exception_data.memory_lost = 1;
hw_exception_data.reset_cause = KFD_HW_EXCEPTION_ECC;
memset(&memory_exception_data, 0, sizeof(memory_exception_data));
memory_exception_data.ErrorType = KFD_MEM_ERR_POISON_CONSUMED;
- memory_exception_data.gpu_id = dev->id;
+ memory_exception_data.gpu_id = user_gpu_id;
memory_exception_data.failure.imprecise = true;
mutex_lock(&p->event_mutex);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index f50c0af6a045..855c162b85ea 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -774,6 +774,12 @@ struct kfd_process_device {
uint64_t faults;
uint64_t page_in;
uint64_t page_out;
+ /*
+ * If this process has been checkpointed before, then the user
+ * application will use the original gpu_id on the
+ * checkpointed node to refer to this device.
+ */
+ uint32_t user_gpu_id;
};
#define qpd_to_pdd(x) container_of(x, struct kfd_process_device, qpd)
@@ -932,6 +938,11 @@ int kfd_process_restore_queues(struct kfd_process *p);
void kfd_suspend_all_processes(void);
int kfd_resume_all_processes(void);
+struct kfd_process_device *kfd_process_device_data_by_id(struct kfd_process *process,
+ uint32_t gpu_id);
+
+int kfd_process_get_user_gpu_id(struct kfd_process *p, uint32_t actual_gpu_id);
+
int kfd_process_device_init_vm(struct kfd_process_device *pdd,
struct file *drm_file);
struct kfd_process_device *kfd_bind_process_to_device(struct kfd_dev *dev,
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index e20fbb7ba9bb..67e2432098d1 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -1521,6 +1521,7 @@ struct kfd_process_device *kfd_create_process_device_data(struct kfd_dev *dev,
pdd->runtime_inuse = false;
pdd->vram_usage = 0;
pdd->sdma_past_activity_counter = 0;
+ pdd->user_gpu_id = dev->id;
atomic64_set(&pdd->evict_duration_counter, 0);
p->pdds[p->n_pdds++] = pdd;
@@ -1997,6 +1998,37 @@ void kfd_flush_tlb(struct kfd_process_device *pdd, enum TLB_FLUSH_TYPE type)
}
}
+struct kfd_process_device *kfd_process_device_data_by_id(struct kfd_process *p, uint32_t gpu_id)
+{
+ int i;
+
+ if (gpu_id) {
+ for (i = 0; i < p->n_pdds; i++) {
+ struct kfd_process_device *pdd = p->pdds[i];
+
+ if (pdd->user_gpu_id == gpu_id)
+ return pdd;
+ }
+ }
+ return NULL;
+}
+
+int kfd_process_get_user_gpu_id(struct kfd_process *p, uint32_t actual_gpu_id)
+{
+ int i;
+
+ if (!actual_gpu_id)
+ return 0;
+
+ for (i = 0; i < p->n_pdds; i++) {
+ struct kfd_process_device *pdd = p->pdds[i];
+
+ if (pdd->dev->id == actual_gpu_id)
+ return pdd->user_gpu_id;
+ }
+ return -EINVAL;
+}
+
#if defined(CONFIG_DEBUG_FS)
int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
index 4d8facfa6b03..24b45a67d836 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -612,7 +612,7 @@ static int criu_checkpoint_queue(struct kfd_process_device *pdd,
mqd = (void *)(q_data + 1);
ctl_stack = mqd + q_data->mqd_size;
- q_data->gpu_id = pdd->dev->id;
+ q_data->gpu_id = pdd->user_gpu_id;
q_data->type = q->properties.type;
q_data->format = q->properties.format;
q_data->q_id = q->properties.queue_id;
@@ -773,7 +773,6 @@ int kfd_criu_restore_queue(struct kfd_process *p,
uint64_t q_extra_data_size;
struct queue_properties qp;
unsigned int queue_id;
- struct kfd_dev *dev;
int ret = 0;
if (*priv_data_offset + sizeof(*q_data) > max_priv_data_size)
@@ -811,20 +810,11 @@ int kfd_criu_restore_queue(struct kfd_process *p,
*priv_data_offset += q_extra_data_size;
- dev = kfd_device_by_id(q_data->gpu_id);
- if (!dev) {
- pr_err("Could not get kfd_dev from gpu_id = 0x%x\n",
- q_data->gpu_id);
-
- ret = -EINVAL;
- goto exit;
- }
-
- pdd = kfd_get_process_device_data(dev, p);
+ pdd = kfd_process_device_data_by_id(p, q_data->gpu_id);
if (!pdd) {
pr_err("Failed to get pdd\n");
- ret = -EFAULT;
- return ret;
+ ret = -EINVAL;
+ goto exit;
}
/* data stored in this order: mqd, ctl_stack */
mqd = q_extra_data;
--
2.17.1
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