[RFC PATCH 1/4] drm/amdgpu: set compute queue priority at mqd_init
Nirmoy Das
nirmoy.aiemd at gmail.com
Thu Feb 27 21:40:09 UTC 2020
We were changing compute ring priority while rings were being used
before every job submission which is not recommended. This patch
sets compute queue priority at mqd initialization for gfx8 and gfx9.
Policy: Enable high priority compute queues only if gpu has >1 MEC, if
so PIPE0 and PIPE1 will be in high priority.
high/normal priority compute sched list are generated from set of high/normal
priority compute queues. At context creation, entity of compute queue
get a sched list from high or normal priority depending on ctx->priority
Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 4 ----
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 19 +++++++++++++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 14 ++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h | 12 ++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 6 ------
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 1 +
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 23 ++++++++++++++++++++---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 20 ++++++++++++++++++++
8 files changed, 82 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index f397ff97b4e4..8304d0c87899 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -1205,7 +1205,6 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
struct drm_sched_entity *entity = p->entity;
enum drm_sched_priority priority;
- struct amdgpu_ring *ring;
struct amdgpu_bo_list_entry *e;
struct amdgpu_job *job;
uint64_t seq;
@@ -1258,9 +1257,6 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
priority = job->base.s_priority;
drm_sched_entity_push_job(&job->base, entity);
- ring = to_amdgpu_ring(entity->rq->sched);
- amdgpu_ring_priority_get(ring, priority);
-
amdgpu_vm_move_to_lru_tail(p->adev, &fpriv->vm);
ttm_eu_fence_buffer_objects(&p->ticket, &p->validated, p->fence);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index 94a6c42f29ea..a1742b1d4f9c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -85,8 +85,14 @@ static int amdgpu_ctx_init_entity(struct amdgpu_ctx *ctx, const u32 hw_ip, const
num_scheds = 1;
break;
case AMDGPU_HW_IP_COMPUTE:
- scheds = adev->gfx.compute_sched;
- num_scheds = adev->gfx.num_compute_sched;
+ if (priority > DRM_SCHED_PRIORITY_NORMAL &&
+ adev->gfx.num_compute_sched_high) {
+ scheds = adev->gfx.compute_sched_high;
+ num_scheds = adev->gfx.num_compute_sched_high;
+ } else {
+ scheds = adev->gfx.compute_sched;
+ num_scheds = adev->gfx.num_compute_sched;
+ }
break;
case AMDGPU_HW_IP_DMA:
scheds = adev->sdma.sdma_sched;
@@ -638,8 +644,13 @@ void amdgpu_ctx_init_sched(struct amdgpu_device *adev)
}
for (i = 0; i < adev->gfx.num_compute_rings; i++) {
- adev->gfx.compute_sched[i] = &adev->gfx.compute_ring[i].sched;
- adev->gfx.num_compute_sched++;
+ if (!adev->gfx.compute_ring[i].high_priority) {
+ adev->gfx.compute_sched[adev->gfx.num_compute_sched++] =
+ &adev->gfx.compute_ring[i].sched;
+ } else {
+ adev->gfx.compute_sched_high[adev->gfx.num_compute_sched_high++] =
+ &adev->gfx.compute_ring[i].sched;
+ }
}
for (i = 0; i < adev->sdma.num_instances; i++) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index 7403588684b3..bdea5d44edf4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -192,6 +192,20 @@ static bool amdgpu_gfx_is_multipipe_capable(struct amdgpu_device *adev)
return adev->gfx.mec.num_mec > 1;
}
+bool amdgpu_gfx_is_high_priority_compute_queue(struct amdgpu_device *adev,
+ int queue)
+{
+ bool multipipe_policy = amdgpu_gfx_is_multipipe_capable(adev);
+
+ /* only enable high priority queue if more than 1 MEC.
+ * When multipipe_policy is true amdgpu gets queue 0,1 from each pipe of
+ * 1st MEC. Policy: make queue 0 of each pipe as high priority compute queue */
+ if (multipipe_policy && queue == 0)
+ return true;
+
+ return false;
+}
+
void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev)
{
int i, queue, pipe, mec;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index 37ba05b63b2a..13ee0ea66c6f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -41,6 +41,14 @@
#define AMDGPU_MAX_GFX_QUEUES KGD_MAX_QUEUES
#define AMDGPU_MAX_COMPUTE_QUEUES KGD_MAX_QUEUES
+#define AMDGPU_GFX_PIPE_PRIO_LOW 0
+#define AMDGPU_GFX_PIPE_PRIO_NORMAL 1
+#define AMDGPU_GFX_PIPE_PRIO_HIGH 2
+
+#define AMDGPU_GFX_QUEUE_PRIORITY_MINIMUM 0
+#define AMDGPU_GFX_QUEUE_PRIORITY_MAXIMUM 15
+
+
struct amdgpu_mec {
struct amdgpu_bo *hpd_eop_obj;
u64 hpd_eop_gpu_addr;
@@ -281,7 +289,9 @@ struct amdgpu_gfx {
unsigned num_gfx_rings;
struct amdgpu_ring compute_ring[AMDGPU_MAX_COMPUTE_RINGS];
struct drm_gpu_scheduler *compute_sched[AMDGPU_MAX_COMPUTE_RINGS];
+ struct drm_gpu_scheduler *compute_sched_high[AMDGPU_MAX_COMPUTE_RINGS];
uint32_t num_compute_sched;
+ uint32_t num_compute_sched_high;
unsigned num_compute_rings;
struct amdgpu_irq_src eop_irq;
struct amdgpu_irq_src priv_reg_irq;
@@ -363,6 +373,8 @@ void amdgpu_gfx_bit_to_mec_queue(struct amdgpu_device *adev, int bit,
int *mec, int *pipe, int *queue);
bool amdgpu_gfx_is_mec_queue_enabled(struct amdgpu_device *adev, int mec,
int pipe, int queue);
+bool amdgpu_gfx_is_high_priority_compute_queue(struct amdgpu_device *adev,
+ int queue);
int amdgpu_gfx_me_queue_to_bit(struct amdgpu_device *adev, int me,
int pipe, int queue);
void amdgpu_gfx_bit_to_me_queue(struct amdgpu_device *adev, int bit,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index d42be880a236..4981e443a884 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -117,12 +117,10 @@ void amdgpu_job_free_resources(struct amdgpu_job *job)
static void amdgpu_job_free_cb(struct drm_sched_job *s_job)
{
- struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched);
struct amdgpu_job *job = to_amdgpu_job(s_job);
drm_sched_job_cleanup(s_job);
- amdgpu_ring_priority_put(ring, s_job->s_priority);
dma_fence_put(job->fence);
amdgpu_sync_free(&job->sync);
amdgpu_sync_free(&job->sched_sync);
@@ -143,7 +141,6 @@ int amdgpu_job_submit(struct amdgpu_job *job, struct drm_sched_entity *entity,
void *owner, struct dma_fence **f)
{
enum drm_sched_priority priority;
- struct amdgpu_ring *ring;
int r;
if (!f)
@@ -158,9 +155,6 @@ int amdgpu_job_submit(struct amdgpu_job *job, struct drm_sched_entity *entity,
priority = job->base.s_priority;
drm_sched_entity_push_job(&job->base, entity);
- ring = to_amdgpu_ring(entity->rq->sched);
- amdgpu_ring_priority_get(ring, priority);
-
return 0;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 24caff085d00..34fcd467f18d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -222,6 +222,7 @@ struct amdgpu_ring {
struct mutex priority_mutex;
/* protected by priority_mutex */
int priority;
+ bool high_priority;
#if defined(CONFIG_DEBUG_FS)
struct dentry *ent;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index e63f98b2d389..4260becd569b 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -4426,6 +4426,23 @@ static int gfx_v8_0_deactivate_hqd(struct amdgpu_device *adev, u32 req)
return r;
}
+static void gfx_v8_0_mqd_set_priority(struct amdgpu_ring *ring, struct vi_mqd *mqd)
+{
+ struct amdgpu_device *adev = ring->adev;
+
+ if (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) {
+ if (amdgpu_gfx_is_high_priority_compute_queue(adev, ring->queue)) {
+ mqd->cp_hqd_pipe_priority = AMDGPU_GFX_PIPE_PRIO_HIGH;
+ ring->high_priority = true;
+ mqd->cp_hqd_queue_priority =
+ AMDGPU_GFX_QUEUE_PRIORITY_MAXIMUM;
+ mqd->cp_hqd_quantum = RREG32(mmCP_HQD_QUANTUM);
+ }
+ else
+ ring->high_priority = false;
+ }
+}
+
static int gfx_v8_0_mqd_init(struct amdgpu_ring *ring)
{
struct amdgpu_device *adev = ring->adev;
@@ -4549,9 +4566,6 @@ static int gfx_v8_0_mqd_init(struct amdgpu_ring *ring)
/* defaults */
mqd->cp_hqd_eop_rptr = RREG32(mmCP_HQD_EOP_RPTR);
mqd->cp_hqd_eop_wptr = RREG32(mmCP_HQD_EOP_WPTR);
- mqd->cp_hqd_pipe_priority = RREG32(mmCP_HQD_PIPE_PRIORITY);
- mqd->cp_hqd_queue_priority = RREG32(mmCP_HQD_QUEUE_PRIORITY);
- mqd->cp_hqd_quantum = RREG32(mmCP_HQD_QUANTUM);
mqd->cp_hqd_ctx_save_base_addr_lo = RREG32(mmCP_HQD_CTX_SAVE_BASE_ADDR_LO);
mqd->cp_hqd_ctx_save_base_addr_hi = RREG32(mmCP_HQD_CTX_SAVE_BASE_ADDR_HI);
mqd->cp_hqd_cntl_stack_offset = RREG32(mmCP_HQD_CNTL_STACK_OFFSET);
@@ -4563,6 +4577,9 @@ static int gfx_v8_0_mqd_init(struct amdgpu_ring *ring)
mqd->cp_hqd_eop_wptr_mem = RREG32(mmCP_HQD_EOP_WPTR_MEM);
mqd->cp_hqd_eop_dones = RREG32(mmCP_HQD_EOP_DONES);
+ /* set static priority for a queue/ring */
+ gfx_v8_0_mqd_set_priority(ring, mqd);
+
/* map_queues packet doesn't need activate the queue,
* so only kiq need set this field.
*/
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 4135e4126e82..85a54849abd1 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -3310,6 +3310,23 @@ static void gfx_v9_0_kiq_setting(struct amdgpu_ring *ring)
WREG32_SOC15_RLC(GC, 0, mmRLC_CP_SCHEDULERS, tmp);
}
+static void gfx_v9_0_mqd_set_priority(struct amdgpu_ring *ring, struct v9_mqd *mqd)
+{
+ struct amdgpu_device *adev = ring->adev;
+
+ if (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) {
+ if (amdgpu_gfx_is_high_priority_compute_queue(adev, ring->queue)) {
+ mqd->cp_hqd_pipe_priority = AMDGPU_GFX_PIPE_PRIO_HIGH;
+ ring->high_priority = true;
+ mqd->cp_hqd_queue_priority =
+ AMDGPU_GFX_QUEUE_PRIORITY_MAXIMUM;
+ mqd->cp_hqd_quantum = RREG32(mmCP_HQD_QUANTUM);
+ }
+ else
+ ring->high_priority = false;
+ }
+}
+
static int gfx_v9_0_mqd_init(struct amdgpu_ring *ring)
{
struct amdgpu_device *adev = ring->adev;
@@ -3446,6 +3463,9 @@ static int gfx_v9_0_mqd_init(struct amdgpu_ring *ring)
tmp = REG_SET_FIELD(tmp, CP_HQD_IB_CONTROL, MIN_IB_AVAIL_SIZE, 3);
mqd->cp_hqd_ib_control = tmp;
+ /* set static priority for a queue/ring */
+ gfx_v9_0_mqd_set_priority(ring, mqd);
+
/* map_queues packet doesn't need activate the queue,
* so only kiq need set this field.
*/
--
2.25.0
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