[PATCH] drm/amdkfd: Remove GWS from process during uninit

Deucher, Alexander Alexander.Deucher at amd.com
Wed Jul 17 15:02:12 UTC 2019

Acked-by: Alex Deucher <alexander.deucher at amd.com>
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Greathouse, Joseph <Joseph.Greathouse at amd.com>
Sent: Wednesday, July 17, 2019 10:58 AM
To: amd-gfx at lists.freedesktop.org
Cc: Greathouse, Joseph
Subject: [PATCH] drm/amdkfd: Remove GWS from process during uninit

If we shut down a process without having destroyed its GWS-using
queues, it is possible that GWS BO will still be in the process
BO list during the gpuvm destruction. This list should be empty
at that time, so we should remove the GWS allocation at the
process uninit point if it is still around.

Change-Id: I098e7b315070dd5b0165bb7905aef643450f27f2
Signed-off-by: Joseph Greathouse <Joseph.Greathouse at amd.com>
 drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 3 +++
 1 file changed, 3 insertions(+)

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 da0958625861..7e6c3ee82f5b 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -150,6 +150,9 @@ 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)
+                       amdgpu_amdkfd_remove_gws_from_process(pqm->process->kgd_process_info,
+                               pqn->q->gws);

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