[RFC PATCH 16/17] drm/amdkfd: CRIU implement gpu_id remapping
Felix Kuehling
Felix.Kuehling at amd.com
Sat May 1 01:57:51 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>
Change-Id: I8f72afe847c9ef7b25a902b30516e9043f1b5834
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 245 +++++++++++++----------
drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 3 +
drivers/gpu/drm/amd/amdkfd/kfd_process.c | 18 ++
3 files changed, 157 insertions(+), 109 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index ce511b246beb..8e92c68eb9c5 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -294,13 +294,14 @@ 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) {
+
+ 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);
return -EINVAL;
}
-
- mutex_lock(&p->mutex);
+ dev = pdd->dev;
pdd = kfd_bind_process_to_device(dev, p);
if (IS_ERR(pdd)) {
@@ -491,7 +492,6 @@ 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;
@@ -506,13 +506,15 @@ 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;
@@ -525,7 +527,7 @@ 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,
@@ -543,17 +545,18 @@ 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;
@@ -577,16 +580,20 @@ 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->device_info->asic_family == 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());
/*
@@ -596,7 +603,7 @@ 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) {
@@ -614,8 +621,9 @@ 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;
@@ -625,12 +633,18 @@ 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->device_info->asic_family == CHIP_CARRIZO) {
pr_debug("kfd_ioctl_dbg_unregister not supported on CZ\n");
@@ -664,6 +678,7 @@ 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;
@@ -673,9 +688,15 @@ 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->device_info->asic_family == CHIP_CARRIZO) {
pr_debug("kfd_ioctl_dbg_wave_control not supported on CZ\n");
@@ -764,6 +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;
@@ -781,9 +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->device_info->asic_family == CHIP_CARRIZO) {
pr_debug("kfd_ioctl_dbg_wave_control not supported on CZ\n");
@@ -847,16 +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->kgd);
+ args->gpu_clock_counter = amdgpu_amdkfd_get_gpu_clock_counter(pdd->dev->kgd);
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();
@@ -1010,15 +1041,15 @@ static int 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)) {
- mutex_unlock(&p->mutex);
return PTR_ERR(pdd);
}
@@ -1026,8 +1057,6 @@ static int kmap_event_page(struct kfd_process *p, uint64_t event_page_offset)
GET_IDR_HANDLE(event_page_offset));
if (!mem) {
pr_err("Can't find BO, offset is 0x%llx\n", event_page_offset);
-
- mutex_unlock(&p->mutex);
return -EINVAL;
}
@@ -1119,11 +1148,13 @@ 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)) {
@@ -1151,15 +1182,20 @@ 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;
+ }
+
+ amdgpu_amdkfd_get_tile_config(pdd->dev->kgd, &config);
- amdgpu_amdkfd_get_tile_config(dev->kgd, &config);
+ mutex_unlock(&p->mutex);
args->gb_addr_config = config.gb_addr_config;
args->num_banks = config.num_banks;
@@ -1194,21 +1230,15 @@ 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;
@@ -1267,19 +1297,23 @@ static int kfd_ioctl_alloc_memory_of_gpu(struct file *filep,
if (args->size == 0)
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) {
+ 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);
@@ -1350,17 +1384,12 @@ 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);
- 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;
@@ -1374,7 +1403,7 @@ static int kfd_ioctl_free_memory_of_gpu(struct file *filep,
goto err_unlock;
}
- ret = amdgpu_amdkfd_gpuvm_free_memory_of_gpu(dev->kgd,
+ ret = amdgpu_amdkfd_gpuvm_free_memory_of_gpu(pdd->dev->kgd,
(struct kgd_mem *)mem, pdd->drm_priv, &size);
/* If freeing the buffer failed, leave the handle in place for
@@ -1397,15 +1426,11 @@ 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;
- 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;
@@ -1429,6 +1454,12 @@ 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)) {
@@ -1444,21 +1475,21 @@ 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->kgd, (struct kgd_mem *)mem, peer_pdd->drm_priv);
+ peer_pdd->dev->kgd, (struct kgd_mem *)mem, peer_pdd->drm_priv);
if (err) {
pr_err("Failed to map to gpu %d/%d\n",
i, args->n_devices);
@@ -1477,12 +1508,10 @@ static int kfd_ioctl_map_memory_to_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);
}
@@ -1490,6 +1519,7 @@ 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:
@@ -1507,14 +1537,9 @@ 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;
@@ -1538,8 +1563,7 @@ 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;
@@ -1553,19 +1577,13 @@ 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) {
- err = -EINVAL;
- goto get_mem_obj_from_handle_failed;
- }
-
- peer_pdd = kfd_get_process_device_data(peer, p);
+ peer_pdd = kfd_process_device_data_by_id(p, devices_arr[i]);
if (!peer_pdd) {
- err = -ENODEV;
+ err = -EINVAL;
goto get_mem_obj_from_handle_failed;
}
err = amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
- peer->kgd, (struct kgd_mem *)mem, peer_pdd->drm_priv);
+ peer_pdd->dev->kgd, (struct kgd_mem *)mem, peer_pdd->drm_priv);
if (err) {
pr_err("Failed to unmap from gpu %d/%d\n",
i, args->n_devices);
@@ -1694,23 +1712,26 @@ 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->kgd, dmabuf,
+ r = amdgpu_amdkfd_gpuvm_import_dmabuf(pdd->dev->kgd, dmabuf,
args->va_addr, pdd->drm_priv,
(struct kgd_mem **)&mem, &size,
NULL);
@@ -1744,13 +1765,19 @@ 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,
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index d3265860e78b..b2ea00e7309f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -930,6 +930,9 @@ 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_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 bbf21395fb06..604b2b398be2 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -1424,6 +1424,7 @@ 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;
@@ -1897,6 +1898,23 @@ void kfd_flush_tlb(struct kfd_process_device *pdd)
}
}
+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;
+ }
+
+ WARN_ONCE(1, "Failed to find mapping for gpu = 0x%x\n", gpu_id);
+ }
+ return NULL;
+}
+
#if defined(CONFIG_DEBUG_FS)
int kfd_debugfs_mqds_by_process(struct seq_file *m, void *data)
--
2.17.1
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