From: Kent Russell <kent.russell@xxxxxxx>
Remove gotos that do not feature any common cleanup, and use gotos
instead of repeating cleanup commands.
According to kernel.org: "The goto statement comes in handy when a
function exits from multiple locations and some common work such as
cleanup has to be done. If there is no cleanup needed then just return
directly."
v2: Applied review suggestions in create_queue_nocpsch
Signed-off-by: Kent Russell <kent.russell at amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay at gmail.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 15 +--
.../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 102 ++++++++++-----------
drivers/gpu/drm/amd/amdkfd/kfd_module.c | 3 +-
drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c | 14 +--
.../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 14 +--
5 files changed, 66 insertions(+), 82 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 44c6bfe..65b506f1 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -460,9 +460,8 @@ static int kfd_ioctl_dbg_register(struct file *filep,
*/
pdd = kfd_bind_process_to_device(dev, p);
if (IS_ERR(pdd)) {
- mutex_unlock(&p->mutex);
- mutex_unlock(kfd_get_dbgmgr_mutex());
- return PTR_ERR(pdd);
+ status = PTR_ERR(pdd);
+ goto out;
}
if (!dev->dbgmgr) {
@@ -480,6 +479,7 @@ static int kfd_ioctl_dbg_register(struct file *filep,
status = -EINVAL;
}
+out:
mutex_unlock(&p->mutex);
mutex_unlock(kfd_get_dbgmgr_mutex());
@@ -580,8 +580,8 @@ static int kfd_ioctl_dbg_address_watch(struct file *filep,
args_idx += sizeof(aw_info.watch_address) * aw_info.num_watch_points;
if (args_idx >= args->buf_size_in_bytes - sizeof(*args)) {
- kfree(args_buff);
- return -EINVAL;
+ status = -EINVAL;
+ goto out;
}
watch_mask_value = (uint64_t) args_buff[args_idx];
@@ -604,8 +604,8 @@ static int kfd_ioctl_dbg_address_watch(struct file *filep,
}
if (args_idx >= args->buf_size_in_bytes - sizeof(args)) {
- kfree(args_buff);
- return -EINVAL;
+ status = -EINVAL;
+ goto out;
}
/* Currently HSA Event is not supported for DBG */
@@ -617,6 +617,7 @@ static int kfd_ioctl_dbg_address_watch(struct file *filep,
mutex_unlock(kfd_get_dbgmgr_mutex());
+out:
kfree(args_buff);
return status;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index df93531..2e03379 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -161,32 +161,31 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
if (dqm->total_queue_count >= max_num_of_queues_per_device) {
pr_warn("Can't create new usermode queue because %d queues were already created\n",
dqm->total_queue_count);
- mutex_unlock(&dqm->lock);
- return -EPERM;
+ retval = -EPERM;
+ goto out_unlock;
}
if (list_empty(&qpd->queues_list)) {
retval = allocate_vmid(dqm, qpd, q);
- if (retval) {
- mutex_unlock(&dqm->lock);
- return retval;
- }
+ if (retval)
+ goto out_unlock;
}
*allocated_vmid = qpd->vmid;
q->properties.vmid = qpd->vmid;
if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE)
retval = create_compute_queue_nocpsch(dqm, q, qpd);
- if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
+ else if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
retval = create_sdma_queue_nocpsch(dqm, q, qpd);
+ else
+ retval = -EINVAL;
if (retval) {
if (list_empty(&qpd->queues_list)) {
deallocate_vmid(dqm, qpd, q);
*allocated_vmid = 0;
}
- mutex_unlock(&dqm->lock);
- return retval;
+ goto out_unlock;
}
list_add(&q->list, &qpd->queues_list);
@@ -204,8 +203,9 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
pr_debug("Total of %d queues are accountable so far\n",
dqm->total_queue_count);
+out_unlock:
mutex_unlock(&dqm->lock);
- return 0;
+ return retval;
}
static int allocate_hqd(struct device_queue_manager *dqm, struct queue *q)
@@ -271,23 +271,25 @@ static int create_compute_queue_nocpsch(struct device_queue_manager *dqm,
retval = mqd->init_mqd(mqd, &q->mqd, &q->mqd_mem_obj,
&q->gart_mqd_addr, &q->properties);
- if (retval) {
- deallocate_hqd(dqm, q);
- return retval;
- }
+ if (retval)
+ goto out_deallocate_hqd;
pr_debug("Loading mqd to hqd on pipe %d, queue %d\n",
q->pipe, q->queue);
retval = mqd->load_mqd(mqd, q->mqd, q->pipe,
q->queue, (uint32_t __user *) q->properties.write_ptr);
- if (retval) {
- deallocate_hqd(dqm, q);
- mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj);
- return retval;
- }
+ if (retval)
+ goto out_uninit_mqd;
return 0;
+
+out_uninit_mqd:
+ mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj);
+out_deallocate_hqd:
+ deallocate_hqd(dqm, q);
+
+ return retval;
}
static int destroy_queue_nocpsch(struct device_queue_manager *dqm,
@@ -366,8 +368,8 @@ static int update_queue(struct device_queue_manager *dqm, struct queue *q)
mqd = dqm->ops.get_mqd_manager(dqm,
get_mqd_type_from_queue_type(q->properties.type));
if (!mqd) {
- mutex_unlock(&dqm->lock);
- return -ENOMEM;
+ retval = -ENOMEM;
+ goto out_unlock;
}
if (q->properties.is_active)
@@ -387,6 +389,7 @@ static int update_queue(struct device_queue_manager *dqm, struct queue *q)
if (sched_policy != KFD_SCHED_POLICY_NO_HWS)
retval = execute_queues_cpsch(dqm, false);
+out_unlock:
mutex_unlock(&dqm->lock);
return retval;
}
@@ -500,16 +503,15 @@ static int initialize_nocpsch(struct device_queue_manager *dqm)
pr_debug("num of pipes: %d\n", get_pipes_per_mec(dqm));
+ dqm->allocated_queues = kcalloc(get_pipes_per_mec(dqm),
+ sizeof(unsigned int), GFP_KERNEL);
+ if (!dqm->allocated_queues)
+ return -ENOMEM;
+
mutex_init(&dqm->lock);
INIT_LIST_HEAD(&dqm->queues);
dqm->queue_count = dqm->next_pipe_to_allocate = 0;
dqm->sdma_queue_count = 0;
- dqm->allocated_queues = kcalloc(get_pipes_per_mec(dqm),
- sizeof(unsigned int), GFP_KERNEL);
- if (!dqm->allocated_queues) {
- mutex_destroy(&dqm->lock);
- return -ENOMEM;
- }
for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
int pipe_offset = pipe * get_queues_per_pipe(dqm);
@@ -602,20 +604,22 @@ static int create_sdma_queue_nocpsch(struct device_queue_manager *dqm,
dqm->ops_asic_specific.init_sdma_vm(dqm, q, qpd);
retval = mqd->init_mqd(mqd, &q->mqd, &q->mqd_mem_obj,
&q->gart_mqd_addr, &q->properties);
- if (retval) {
- deallocate_sdma_queue(dqm, q->sdma_id);
- return retval;
- }
+ if (retval)
+ goto out_deallocate_sdma_queue;
retval = mqd->load_mqd(mqd, q->mqd, 0,
0, NULL);
- if (retval) {
- deallocate_sdma_queue(dqm, q->sdma_id);
- mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj);
- return retval;
- }
+ if (retval)
+ goto out_uninit_mqd;
return 0;
+
+out_uninit_mqd:
+ mqd->uninit_mqd(mqd, q->mqd, q->mqd_mem_obj);
+out_deallocate_sdma_queue:
+ deallocate_sdma_queue(dqm, q->sdma_id);
+
+ return retval;
}
/*
@@ -681,12 +685,8 @@ static int initialize_cpsch(struct device_queue_manager *dqm)
dqm->active_runlist = false;
retval = dqm->ops_asic_specific.initialize(dqm);
if (retval)
- goto fail_init_pipelines;
-
- return 0;
+ mutex_destroy(&dqm->lock);
-fail_init_pipelines:
- mutex_destroy(&dqm->lock);
return retval;
}
@@ -846,8 +846,8 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
get_mqd_type_from_queue_type(q->properties.type));
if (!mqd) {
- mutex_unlock(&dqm->lock);
- return -ENOMEM;
+ retval = -ENOMEM;
+ goto out;
}
dqm->ops_asic_specific.init_sdma_vm(dqm, q, qpd);
@@ -1097,14 +1097,11 @@ static bool set_cache_memory_policy(struct device_queue_manager *dqm,
uint64_t base = (uintptr_t)alternate_aperture_base;
uint64_t limit = base + alternate_aperture_size - 1;
- if (limit <= base)
- goto out;
-
- if ((base & APE1_FIXED_BITS_MASK) != 0)
- goto out;
-
- if ((limit & APE1_FIXED_BITS_MASK) != APE1_LIMIT_ALIGNMENT)
+ if (limit <= base || (base & APE1_FIXED_BITS_MASK) != 0 ||
+ (limit & APE1_FIXED_BITS_MASK) != APE1_LIMIT_ALIGNMENT) {
+ retval = false;
goto out;
+ }
qpd->sh_mem_ape1_base = base >> 16;
qpd->sh_mem_ape1_limit = limit >> 16;
@@ -1125,12 +1122,9 @@ static bool set_cache_memory_policy(struct device_queue_manager *dqm,
qpd->sh_mem_config, qpd->sh_mem_ape1_base,
qpd->sh_mem_ape1_limit);
- mutex_unlock(&dqm->lock);
- return retval;
-
out:
mutex_unlock(&dqm->lock);
- return false;
+ return retval;
}
struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_module.c b/drivers/gpu/drm/amd/amdkfd/kfd_module.c
index 819a442..0d73bea 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_module.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_module.c
@@ -105,7 +105,7 @@ static int __init kfd_module_init(void)
err = kfd_pasid_init();
if (err < 0)
- goto err_pasid;
+ return err;
err = kfd_chardev_init();
if (err < 0)
@@ -127,7 +127,6 @@ static int __init kfd_module_init(void)
kfd_chardev_exit();
err_ioctl:
kfd_pasid_exit();
-err_pasid:
return err;
}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
index f3b8cc8..c4030b3 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
@@ -442,6 +442,7 @@ int pm_send_set_resources(struct packet_manager *pm,
struct scheduling_resources *res)
{
struct pm4_set_resources *packet;
+ int retval = 0;
BUG_ON(!pm || !res);
@@ -450,9 +451,9 @@ int pm_send_set_resources(struct packet_manager *pm,
sizeof(*packet) / sizeof(uint32_t),
(unsigned int **)&packet);
if (!packet) {
- mutex_unlock(&pm->lock);
pr_err("Failed to allocate buffer on kernel queue\n");
- return -ENOMEM;
+ retval = -ENOMEM;
+ goto out;
}
memset(packet, 0, sizeof(struct pm4_set_resources));
@@ -475,9 +476,10 @@ int pm_send_set_resources(struct packet_manager *pm,
pm->priv_queue->ops.submit_packet(pm->priv_queue);
+out:
mutex_unlock(&pm->lock);
- return 0;
+ return retval;
}
int pm_send_runlist(struct packet_manager *pm, struct list_head *dqm_queues)
@@ -555,9 +557,6 @@ int pm_send_query_status(struct packet_manager *pm, uint64_t fence_address,
packet->data_lo = lower_32_bits((uint64_t)fence_value);
pm->priv_queue->ops.submit_packet(pm->priv_queue);
- mutex_unlock(&pm->lock);
-
- return 0;
fail_acquire_packet_buffer:
mutex_unlock(&pm->lock);
@@ -639,9 +638,6 @@ int pm_send_unmap_queue(struct packet_manager *pm, enum kfd_queue_type type,
pm->priv_queue->ops.submit_packet(pm->priv_queue);
- mutex_unlock(&pm->lock);
- return 0;
-
err_acquire_packet_buffer:
mutex_unlock(&pm->lock);
return retval;
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 d4f8bae..8432f5f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -35,9 +35,8 @@ static inline struct process_queue_node *get_queue_by_qid(
BUG_ON(!pqm);
list_for_each_entry(pqn, &pqm->queues, process_queue_list) {
- if (pqn->q && pqn->q->properties.queue_id == qid)
- return pqn;
- if (pqn->kq && pqn->kq->queue->properties.queue_id == qid)
+ if ((pqn->q && pqn->q->properties.queue_id == qid) ||
+ (pqn->kq && pqn->kq->queue->properties.queue_id == qid))
return pqn;
}
@@ -113,8 +112,6 @@ static int create_cp_queue(struct process_queue_manager *pqm,
{
int retval;
- retval = 0;
-
/* Doorbell initialized in user space*/
q_properties->doorbell_ptr = NULL;
@@ -127,7 +124,7 @@ static int create_cp_queue(struct process_queue_manager *pqm,
retval = init_queue(q, q_properties);
if (retval != 0)
- goto err_init_queue;
+ return retval;
(*q)->device = dev;
(*q)->process = pqm->process;
@@ -135,9 +132,6 @@ static int create_cp_queue(struct process_queue_manager *pqm,
pr_debug("PQM After init queue");
return retval;
-
-err_init_queue:
- return retval;
}
int pqm_create_queue(struct process_queue_manager *pqm,
@@ -181,7 +175,7 @@ int pqm_create_queue(struct process_queue_manager *pqm,
list_for_each_entry(cur, &pdd->qpd.queues_list, list)
num_queues++;
if (num_queues >= dev->device_info->max_no_of_hqd/2)
- return (-ENOSPC);
+ return -ENOSPC;
}
retval = find_available_queue_slot(pqm, qid);
--
2.7.4
