[PATCH 2/2] drm/amdgpu: add the ring id schedule module parameter for amdgpu

[jesse.zhang at amd.com]

From: "Jesse.zhang at amd.com" <jesse.zhang at amd.com>

Added ring id schedule to switch scheduling policy when cs submits.
Schedule the ring by setting the ring id.

Signed-off-by: Jesse Zhang <Jesse.Zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h     | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c  | 9 +++++++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 8 ++++++++
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 48c9b9b06905..3fd3e4eeab47 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -227,6 +227,7 @@ extern int amdgpu_noretry;
 extern int amdgpu_force_asic_type;
 extern int amdgpu_smartshift_bias;
 extern int amdgpu_use_xgmi_p2p;
+extern int amdgpu_ring_id_schedule;
 extern int amdgpu_mtype_local;
 extern bool enforce_isolation;
 #ifdef CONFIG_HSA_AMD
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 18887128a973..33658bef5513 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -1276,6 +1276,7 @@ static void amdgpu_cs_post_dependencies(struct amdgpu_cs_parser *p)
 static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 			    union drm_amdgpu_cs *cs)
 {
+	struct drm_amdgpu_cs_chunk_ib *chunk_ib = p->chunks[0].kdata;
 	struct amdgpu_fpriv *fpriv = p->filp->driver_priv;
 	struct amdgpu_job *leader = p->gang_leader;
 	struct amdgpu_bo_list_entry *e;
@@ -1285,8 +1286,12 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
 	uint64_t seq;
 	int r;
 
-	for (i = 0; i < p->gang_size; ++i)
-		drm_sched_job_arm(&p->jobs[i]->base, -1);
+	for (i = 0; i < p->gang_size; ++i) {
+		if (amdgpu_ring_id_schedule)
+			drm_sched_job_arm(&p->jobs[i]->base, chunk_ib->ring);
+		else
+			drm_sched_job_arm(&p->jobs[i]->base, -1);
+	}
 
 	for (i = 0; i < p->gang_size; ++i) {
 		struct dma_fence *fence;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 680e44fdee6e..55fba9e93a8b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -221,6 +221,7 @@ int amdgpu_reset_method = -1; /* auto */
 int amdgpu_num_kcq = -1;
 int amdgpu_smartshift_bias;
 int amdgpu_use_xgmi_p2p = 1;
+int amdgpu_ring_id_schedule = 0;
 int amdgpu_vcnfw_log;
 int amdgpu_sg_display = -1; /* auto */
 int amdgpu_user_partt_mode = AMDGPU_AUTO_COMPUTE_PARTITION_MODE;
@@ -740,6 +741,13 @@ MODULE_PARM_DESC(use_xgmi_p2p,
 	"Enable XGMI P2P interface (0 = disable; 1 = enable (default))");
 module_param_named(use_xgmi_p2p, amdgpu_use_xgmi_p2p, int, 0444);
 
+/**
+ * DOC: ring_id_schedule (int)
+ * Enables/disables ring id schedule interface (0 = disable, 1 = enable, -1 auto (default))
+ */
+MODULE_PARM_DESC(ring_id_schedule,
+	"Enable ring id schedule interface(0 = disable, 1 = enable, -1 auto (default))");
+module_param_named(ring_id_schedule, amdgpu_ring_id_schedule, int, 0644);
 
 #ifdef CONFIG_HSA_AMD
 /**
-- 
2.25.1