aboutsummaryrefslogtreecommitdiffstats
path: root/common/recipes-kernel/linux/linux-yocto-4.14.71/1198-drm-amdkfd-Use-software-scheduler-on-Tonga-ASIC.patch
diff options
context:
space:
mode:
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/1198-drm-amdkfd-Use-software-scheduler-on-Tonga-ASIC.patch')
-rw-r--r--common/recipes-kernel/linux/linux-yocto-4.14.71/1198-drm-amdkfd-Use-software-scheduler-on-Tonga-ASIC.patch42
1 files changed, 42 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/1198-drm-amdkfd-Use-software-scheduler-on-Tonga-ASIC.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/1198-drm-amdkfd-Use-software-scheduler-on-Tonga-ASIC.patch
new file mode 100644
index 00000000..bff3e922
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/1198-drm-amdkfd-Use-software-scheduler-on-Tonga-ASIC.patch
@@ -0,0 +1,42 @@
+From 048928c678b34792e07cfa4c0917eca3338fd9e8 Mon Sep 17 00:00:00 2001
+From: Jay Cornwall <Jay.Cornwall@amd.com>
+Date: Thu, 6 Oct 2016 20:10:12 -0500
+Subject: [PATCH 1198/4131] drm/amdkfd: Use software scheduler on Tonga ASIC
+
+The CP scheduling path depends on the context save/restore feature for
+timely runlist dequeue. Tonga ASICs do not support this feature.
+
+Instead use the software scheduling path on Tonga. This does not
+support HQD/VMID oversubscription or SR-IOV virtualization but is
+otherwise equal in functionality.
+
+Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com>
+---
+ drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 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 d77c1ad..3bc831f 100644
+--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
++++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+@@ -1483,8 +1483,15 @@ struct device_queue_manager *device_queue_manager_init(struct kfd_dev *dev)
+ if (!dqm)
+ return NULL;
+
+- dqm->sched_policy = (dev->device_info->asic_family == CHIP_HAWAII) ?
+- KFD_SCHED_POLICY_NO_HWS : sched_policy;
++ switch (dev->device_info->asic_family) {
++ case CHIP_HAWAII:
++ case CHIP_TONGA:
++ dqm->sched_policy = KFD_SCHED_POLICY_NO_HWS;
++ break;
++ default:
++ dqm->sched_policy = sched_policy;
++ break;
++ }
+
+ dqm->dev = dev;
+ switch (dqm->sched_policy) {
+--
+2.7.4
+