Commit dcdb4d90 authored by Philip Yang's avatar Philip Yang Committed by Alex Deucher

drm/amdkfd: fix sysfs kobj leak

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: default avatarPhilip Yang <Philip.Yang@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 75ae84c8
......@@ -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;
......
......@@ -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);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment