[PATCH v3 4/5] drm/amdgpu: switch GPU workload profile

[Shashank Sharma <shashank.sharma@xxxxxxx>]

This patch and switches the GPU workload based profile based
on the workload hint information saved in the workload context.
The workload profile is reset to NONE when the job is done.

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c           |  2 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_ctx_workload.c |  4 ----
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.c          | 15 +++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_job.h          |  3 +++
 4 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index b7bae833c804..de906a42144f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -237,6 +237,8 @@ static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs
 		goto free_all_kdata;
 	}
 
+	p->job->workload_mode = p->ctx->workload_mode;
+
 	if (p->uf_entry.tv.bo)
 		p->job->uf_addr = uf_offset;
 	kvfree(chunk_array);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx_workload.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx_workload.c
index a11cf29bc388..625114804121 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx_workload.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx_workload.c
@@ -55,15 +55,11 @@ int amdgpu_set_workload_profile(struct amdgpu_device *adev,
 
 	mutex_lock(&adev->pm.smu_workload_lock);
 
-	if (adev->pm.workload_mode == hint)
-		goto unlock;
-
 	ret = amdgpu_dpm_switch_power_profile(adev, profile, 1);
 	if (!ret)
 		adev->pm.workload_mode = hint;
 	atomic_inc(&adev->pm.workload_switch_ref);
 
-unlock:
 	mutex_unlock(&adev->pm.smu_workload_lock);
 	return ret;
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index c2fd6f3076a6..9300e86ee7c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -30,6 +30,7 @@
 #include "amdgpu.h"
 #include "amdgpu_trace.h"
 #include "amdgpu_reset.h"
+#include "amdgpu_ctx_workload.h"
 
 static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
 {
@@ -144,6 +145,14 @@ void amdgpu_job_free_resources(struct amdgpu_job *job)
 static void amdgpu_job_free_cb(struct drm_sched_job *s_job)
 {
 	struct amdgpu_job *job = to_amdgpu_job(s_job);
+	struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched);
+
+	if (job->workload_mode != AMDGPU_CTX_WORKLOAD_HINT_NONE) {
+		if (amdgpu_clear_workload_profile(ring->adev, job->workload_mode))
+			DRM_WARN("Failed to come out of workload profile %s\n",
+				amdgpu_workload_profile_name(job->workload_mode));
+		job->workload_mode = AMDGPU_CTX_WORKLOAD_HINT_NONE;
+	}
 
 	drm_sched_job_cleanup(s_job);
 
@@ -256,6 +265,12 @@ static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
 			DRM_ERROR("Error scheduling IBs (%d)\n", r);
 	}
 
+	if (job->workload_mode != AMDGPU_CTX_WORKLOAD_HINT_NONE) {
+		if (amdgpu_set_workload_profile(ring->adev, job->workload_mode))
+			DRM_WARN("Failed to set workload profile to %s\n",
+				  amdgpu_workload_profile_name(job->workload_mode));
+	}
+
 	job->job_run_counter++;
 	amdgpu_job_free_resources(job);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
index babc0af751c2..573e8692c814 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
@@ -68,6 +68,9 @@ struct amdgpu_job {
 	/* job_run_counter >= 1 means a resubmit job */
 	uint32_t		job_run_counter;
 
+	/* workload mode hint for pm */
+	uint32_t		workload_mode;
+
 	uint32_t		num_ibs;
 	struct amdgpu_ib	ibs[];
 };
-- 
2.34.1