3 cases of kobj leak, which causes memory leak:
kobj_type must have release() method to free memory from release
callback. Don't need NULL default_attrs to init kobj.
sysfs files created under kobj_status should be removed with kobj_status
as parent kobject.
Remove queue sysfs files when releasing queue from process MMU notifier
release callback.
Signed-off-by: Philip Yang <Philip.Yang@xxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_process.c | 14 ++++++--------
.../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 1 +
2 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index 3147dc8bb051..cfc36fceac8a 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -451,13 +451,9 @@ static const struct sysfs_ops procfs_stats_ops = {
.show = kfd_procfs_stats_show,
};
-static struct attribute *procfs_stats_attrs[] = {
- NULL
-};
-
static struct kobj_type procfs_stats_type = {
.sysfs_ops = &procfs_stats_ops,
- .default_attrs = procfs_stats_attrs,
+ .release = kfd_procfs_kobj_release,
};
int kfd_procfs_add_queue(struct queue *q)
@@ -946,9 +942,11 @@ static void kfd_process_wq_release(struct work_struct *work)
sysfs_remove_file(p->kobj, &pdd->attr_vram);
sysfs_remove_file(p->kobj, &pdd->attr_sdma);
- sysfs_remove_file(p->kobj, &pdd->attr_evict);
- if (pdd->dev->kfd2kgd->get_cu_occupancy != NULL)
- sysfs_remove_file(p->kobj, &pdd->attr_cu_occupancy);
+
+ sysfs_remove_file(pdd->kobj_stats, &pdd->attr_evict);
+ if (pdd->dev->kfd2kgd->get_cu_occupancy)
+ sysfs_remove_file(pdd->kobj_stats,
+ &pdd->attr_cu_occupancy);
kobject_del(pdd->kobj_stats);
kobject_put(pdd->kobj_stats);
pdd->kobj_stats = NULL;
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 95a6c36cea4c..243dd1efcdbf 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -153,6 +153,7 @@ void pqm_uninit(struct process_queue_manager *pqm)
if (pqn->q && pqn->q->gws)
amdgpu_amdkfd_remove_gws_from_process(pqm->process->kgd_process_info,
pqn->q->gws);
+ kfd_procfs_del_queue(pqn->q);
uninit_queue(pqn->q);
list_del(&pqn->process_queue_list);
kfree(pqn);
--
2.17.1
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