[PATCH 5/6] drm/amdkfd: Only count active sdma queues
Yong Zhao
Yong.Zhao at amd.com
Wed Feb 5 23:28:31 UTC 2020
The sdma_queue_count was only used for inferring whether we should
unmap SDMA queues under HWS mode. In contrast, We mapped active queues
rather than all in map_queues_cpsch(). In order to match the map and unmap
for SDMA queues, we should just count active SDMA queues. Meanwhile,
rename sdma_queue_count to active_sdma_queue_count to reflect the new
usage.
Change-Id: I9f1c3305dad044a3c779ec0730fcf7554050de8b
Signed-off-by: Yong Zhao <Yong.Zhao at amd.com>
---
.../drm/amd/amdkfd/kfd_device_queue_manager.c | 54 ++++++++-----------
.../drm/amd/amdkfd/kfd_device_queue_manager.h | 5 +-
.../amd/amdkfd/kfd_process_queue_manager.c | 16 +++---
3 files changed, 31 insertions(+), 44 deletions(-)
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 064108cf493b..cf77b866054a 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -138,6 +138,10 @@ void increment_queue_count(struct device_queue_manager *dqm,
dqm->active_queue_count++;
if (type == KFD_QUEUE_TYPE_COMPUTE || type == KFD_QUEUE_TYPE_DIQ)
dqm->active_cp_queue_count++;
+ else if (type == KFD_QUEUE_TYPE_SDMA)
+ dqm->active_sdma_queue_count++;
+ else if (type == KFD_QUEUE_TYPE_SDMA_XGMI)
+ dqm->active_xgmi_sdma_queue_count++;
}
void decrement_queue_count(struct device_queue_manager *dqm,
@@ -146,6 +150,10 @@ void decrement_queue_count(struct device_queue_manager *dqm,
dqm->active_queue_count--;
if (type == KFD_QUEUE_TYPE_COMPUTE || type == KFD_QUEUE_TYPE_DIQ)
dqm->active_cp_queue_count--;
+ else if (type == KFD_QUEUE_TYPE_SDMA)
+ dqm->active_sdma_queue_count--;
+ else if (type == KFD_QUEUE_TYPE_SDMA_XGMI)
+ dqm->active_xgmi_sdma_queue_count--;
}
static int allocate_doorbell(struct qcm_process_device *qpd, struct queue *q)
@@ -377,11 +385,6 @@ static int create_queue_nocpsch(struct device_queue_manager *dqm,
if (q->properties.is_active)
increment_queue_count(dqm, q->properties.type);
- if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
- dqm->sdma_queue_count++;
- else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
- dqm->xgmi_sdma_queue_count++;
-
/*
* Unconditionally increment this counter, regardless of the queue's
* type or whether the queue is active.
@@ -462,15 +465,13 @@ static int destroy_queue_nocpsch_locked(struct device_queue_manager *dqm,
mqd_mgr = dqm->mqd_mgrs[get_mqd_type_from_queue_type(
q->properties.type)];
- if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE) {
+ if (q->properties.type == KFD_QUEUE_TYPE_COMPUTE)
deallocate_hqd(dqm, q);
- } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
- dqm->sdma_queue_count--;
+ else if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
deallocate_sdma_queue(dqm, q);
- } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
- dqm->xgmi_sdma_queue_count--;
+ else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
deallocate_sdma_queue(dqm, q);
- } else {
+ else {
pr_debug("q->properties.type %d is invalid\n",
q->properties.type);
return -EINVAL;
@@ -916,8 +917,8 @@ static int initialize_nocpsch(struct device_queue_manager *dqm)
mutex_init(&dqm->lock_hidden);
INIT_LIST_HEAD(&dqm->queues);
dqm->active_queue_count = dqm->next_pipe_to_allocate = 0;
- dqm->sdma_queue_count = 0;
- dqm->xgmi_sdma_queue_count = 0;
+ dqm->active_sdma_queue_count = 0;
+ dqm->active_xgmi_sdma_queue_count = 0;
for (pipe = 0; pipe < get_pipes_per_mec(dqm); pipe++) {
int pipe_offset = pipe * get_queues_per_pipe(dqm);
@@ -1081,8 +1082,8 @@ static int initialize_cpsch(struct device_queue_manager *dqm)
mutex_init(&dqm->lock_hidden);
INIT_LIST_HEAD(&dqm->queues);
dqm->active_queue_count = dqm->processes_count = 0;
- dqm->sdma_queue_count = 0;
- dqm->xgmi_sdma_queue_count = 0;
+ dqm->active_sdma_queue_count = 0;
+ dqm->active_xgmi_sdma_queue_count = 0;
dqm->active_runlist = false;
dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm));
dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm));
@@ -1254,11 +1255,6 @@ static int create_queue_cpsch(struct device_queue_manager *dqm, struct queue *q,
list_add(&q->list, &qpd->queues_list);
qpd->queue_count++;
- if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
- dqm->sdma_queue_count++;
- else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
- dqm->xgmi_sdma_queue_count++;
-
if (q->properties.is_active) {
increment_queue_count(dqm, q->properties.type);
@@ -1367,9 +1363,9 @@ static int unmap_queues_cpsch(struct device_queue_manager *dqm,
return retval;
pr_debug("Before destroying queues, sdma queue count is : %u, xgmi sdma queue count is : %u\n",
- dqm->sdma_queue_count, dqm->xgmi_sdma_queue_count);
+ dqm->active_sdma_queue_count, dqm->active_xgmi_sdma_queue_count);
- if (dqm->sdma_queue_count > 0 || dqm->xgmi_sdma_queue_count)
+ if (dqm->active_sdma_queue_count > 0 || dqm->active_xgmi_sdma_queue_count)
unmap_sdma_queues(dqm);
retval = pm_send_unmap_queue(&dqm->packets, KFD_QUEUE_TYPE_COMPUTE,
@@ -1444,13 +1440,10 @@ static int destroy_queue_cpsch(struct device_queue_manager *dqm,
deallocate_doorbell(qpd, q);
- if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
- dqm->sdma_queue_count--;
+ if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
deallocate_sdma_queue(dqm, q);
- } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
- dqm->xgmi_sdma_queue_count--;
+ else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
deallocate_sdma_queue(dqm, q);
- }
list_del(&q->list);
qpd->queue_count--;
@@ -1673,13 +1666,10 @@ static int process_termination_cpsch(struct device_queue_manager *dqm,
/* Clear all user mode queues */
list_for_each_entry(q, &qpd->queues_list, list) {
- if (q->properties.type == KFD_QUEUE_TYPE_SDMA) {
- dqm->sdma_queue_count--;
+ if (q->properties.type == KFD_QUEUE_TYPE_SDMA)
deallocate_sdma_queue(dqm, q);
- } else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI) {
- dqm->xgmi_sdma_queue_count--;
+ else if (q->properties.type == KFD_QUEUE_TYPE_SDMA_XGMI)
deallocate_sdma_queue(dqm, q);
- }
if (q->properties.is_active)
decrement_queue_count(dqm, q->properties.type);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
index 05e0afc04cd9..62472a186d4f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
@@ -182,8 +182,9 @@ struct device_queue_manager {
unsigned int processes_count;
unsigned int active_queue_count;
unsigned int active_cp_queue_count;
- unsigned int sdma_queue_count;
- unsigned int xgmi_sdma_queue_count;
+ unsigned int cp_queue_count;
+ unsigned int active_sdma_queue_count;
+ unsigned int active_xgmi_sdma_queue_count;
unsigned int total_queue_count;
unsigned int next_pipe_to_allocate;
unsigned int *allocated_queues;
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 c604a2ede3f5..941b5876f19f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -241,16 +241,12 @@ int pqm_create_queue(struct process_queue_manager *pqm,
switch (type) {
case KFD_QUEUE_TYPE_SDMA:
case KFD_QUEUE_TYPE_SDMA_XGMI:
- if ((type == KFD_QUEUE_TYPE_SDMA && dev->dqm->sdma_queue_count
- >= get_num_sdma_queues(dev->dqm)) ||
- (type == KFD_QUEUE_TYPE_SDMA_XGMI &&
- dev->dqm->xgmi_sdma_queue_count
- >= get_num_xgmi_sdma_queues(dev->dqm))) {
- pr_debug("Over-subscription is not allowed for SDMA.\n");
- retval = -EPERM;
- goto err_create_queue;
- }
-
+ /* SDMA queues are always allocated statically no matter
+ * which scheduler mode is used. We also do not need to
+ * check whether a SDMA queue can be allocated here, because
+ * allocate_sdma_queue() in create_queue() has the
+ * corresponding check logic there.
+ */
retval = init_user_queue(pqm, dev, &q, properties, f, *qid);
if (retval != 0)
goto err_create_queue;
--
2.17.1
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