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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>
This commit is contained in:
Jammy Zhou 2015-07-30 16:44:05 +08:00 committed by Alex Deucher
parent 1333f723fb
commit 4afcb30383
5 changed files with 12 additions and 6 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -81,6 +81,7 @@ extern int amdgpu_vm_size;
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 */

4
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View File

@ -77,6 +77,7 @@ int amdgpu_vm_block_size = -1;
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_param_named(enable_scheduler, amdgpu_enable_scheduler, int, 0444);
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 */

3
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
View File

@ -926,7 +926,8 @@ void amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring)
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);

5
drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
View File

@ -468,7 +468,8 @@ struct amd_gpu_scheduler *amd_sched_create(void *device,
struct amd_sched_backend_ops *ops,
unsigned ring,
unsigned granularity,
unsigned preemption)
unsigned preemption,
unsigned hw_submission)
{
struct amd_gpu_scheduler *sched;
char name[20] = "gpu_sched[0]";
@ -495,7 +496,7 @@ struct amd_gpu_scheduler *amd_sched_create(void *device,
init_waitqueue_head(&sched->wait_queue);
if(kfifo_alloc(&sched->active_hw_rq,
AMD_MAX_ACTIVE_HW_SUBMISSION * sizeof(void *),
hw_submission * sizeof(void *),
GFP_KERNEL)) {
kfree(sched);
return NULL;

5
drivers/gpu/drm/amd/scheduler/gpu_scheduler.h
View File

@ -26,8 +26,6 @@
#include <linux/kfifo.h>
#define AMD_MAX_ACTIVE_HW_SUBMISSION 2
#define AMD_KERNEL_CONTEXT_ID 0
#define AMD_KERNEL_PROCESS_ID 0
@ -127,7 +125,8 @@ struct amd_gpu_scheduler *amd_sched_create(void *device,
struct amd_sched_backend_ops *ops,
uint32_t ring,
uint32_t granularity,
uint32_t preemption);
uint32_t preemption,
uint32_t hw_submission);
int amd_sched_destroy(struct amd_gpu_scheduler *sched);