drm/amdgpu: add amdgpu.sched_hw_submission option
This option can be used to specify the max number of submissions in the
active HW queue. The default value is 2 now.
Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 4de1147..6e1fea4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -81,6 +81,7 @@
extern int amdgpu_vm_block_size;
extern int amdgpu_enable_scheduler;
extern int amdgpu_sched_jobs;
+extern int amdgpu_sched_hw_submission;
#define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000
#define AMDGPU_MAX_USEC_TIMEOUT 100000 /* 100 ms */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 319de44..8bb5610 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -77,6 +77,7 @@
int amdgpu_exp_hw_support = 0;
int amdgpu_enable_scheduler = 0;
int amdgpu_sched_jobs = 16;
+int amdgpu_sched_hw_submission = 2;
MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
@@ -147,6 +148,9 @@
MODULE_PARM_DESC(sched_jobs, "the max number of jobs supported in the sw queue (default 16)");
module_param_named(sched_jobs, amdgpu_sched_jobs, int, 0444);
+MODULE_PARM_DESC(sched_hw_submission, "the max number of HW submissions (default 2)");
+module_param_named(sched_hw_submission, amdgpu_sched_hw_submission, int, 0444);
+
static struct pci_device_id pciidlist[] = {
#ifdef CONFIG_DRM_AMDGPU_CIK
/* Kaveri */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index b0e15b5..67d9277 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -926,7 +926,8 @@
if (amdgpu_enable_scheduler) {
ring->scheduler = amd_sched_create((void *)ring->adev,
&amdgpu_sched_ops,
- ring->idx, 5, 0);
+ ring->idx, 5, 0,
+ amdgpu_sched_hw_submission);
if (!ring->scheduler)
DRM_ERROR("Failed to create scheduler on ring %d.\n",
ring->idx);