[PATCH AUTOSEL 6.6 27/32] drm/amdkfd: Free gang_ctx_bo and wptr_bo in pqm_uninit

Sasha Levin
2023-12-04T20:36:37Z

From: ZhenGuo Yin <zhenguo.yin@amd.com>

[ Upstream commit 72838777aa38352e20301e123b97110c456cd38e ]

[Why]
Memory leaks of gang_ctx_bo and wptr_bo.

[How]
Free gang_ctx_bo and wptr_bo in pqm_uninit.

v2: add a common function pqm_clean_queue_resource to
free queue's resources.
v3: reset pdd->pqd.num_gws when destorying GWS queue.

Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: ZhenGuo Yin <zhenguo.yin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../amd/amdkfd/kfd_process_queue_manager.c | 54 +++++++++++--------
1 file changed, 33 insertions(+), 21 deletions(-)

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 adb5e4bdc0b20..7d0f887d99558 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -169,16 +169,43 @@ int pqm_init(struct process_queue_manager *pqm, struct kfd_process *p)
return 0;
}

+static void pqm_clean_queue_resource(struct process_queue_manager *pqm,
+ struct process_queue_node *pqn)
+{
+ struct kfd_node *dev;
+ struct kfd_process_device *pdd;
+
+ dev = pqn->q->device;
+
+ pdd = kfd_get_process_device_data(dev, pqm->process);
+ if (!pdd) {
+ pr_err("Process device data doesn't exist\n");
+ return;
+ }
+
+ if (pqn->q->gws) {
+ if (KFD_GC_VERSION(pqn->q->device) != IP_VERSION(9, 4, 3) &&
+ !dev->kfd->shared_resources.enable_mes)
+ amdgpu_amdkfd_remove_gws_from_process(
+ pqm->process->kgd_process_info, pqn->q->gws);
+ pdd->qpd.num_gws = 0;
+ }
+
+ if (dev->kfd->shared_resources.enable_mes) {
+ amdgpu_amdkfd_free_gtt_mem(dev->adev, pqn->q->gang_ctx_bo);
+ if (pqn->q->wptr_bo)
+ amdgpu_amdkfd_free_gtt_mem(dev->adev, pqn->q->wptr_bo);
+ }
+}
+
void pqm_uninit(struct process_queue_manager *pqm)
{
struct process_queue_node *pqn, *next;

list_for_each_entry_safe(pqn, next, &pqm->queues, process_queue_list) {
- if (pqn->q && pqn->q->gws &&
- KFD_GC_VERSION(pqn->q->device) != IP_VERSION(9, 4, 3) &&
- !pqn->q->device->kfd->shared_resources.enable_mes)
- amdgpu_amdkfd_remove_gws_from_process(pqm->process->kgd_process_info,
- pqn->q->gws);
+ if (pqn->q)
+ pqm_clean_queue_resource(pqm, pqn);
+
kfd_procfs_del_queue(pqn->q);
uninit_queue(pqn->q);
list_del(&pqn->process_queue_list);
@@ -460,22 +487,7 @@ int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
goto err_destroy_queue;
}

- if (pqn->q->gws) {
- if (KFD_GC_VERSION(pqn->q->device) != IP_VERSION(9, 4, 3) &&
- !dev->kfd->shared_resources.enable_mes)
- amdgpu_amdkfd_remove_gws_from_process(
- pqm->process->kgd_process_info,
- pqn->q->gws);
- pdd->qpd.num_gws = 0;
- }
-
- if (dev->kfd->shared_resources.enable_mes) {
- amdgpu_amdkfd_free_gtt_mem(dev->adev,
- pqn->q->gang_ctx_bo);
- if (pqn->q->wptr_bo)
- amdgpu_amdkfd_free_gtt_mem(dev->adev, pqn->q->wptr_bo);
-
- }
+ pqm_clean_queue_resource(pqm, pqn);
uninit_queue(pqn->q);
}

--
2.42.0