linux-kernel - [PATCH AUTOSEL 6.5 39/52] gpu/drm: Eliminate DRM_SCHED_PRIORITY

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Message-ID: <20231029225441.789781-39-sashal@kernel.org>
Date:   Sun, 29 Oct 2023 18:53:26 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Luben Tuikov <luben.tuikov@....com>,
        Alex Deucher <Alexander.Deucher@....com>,
        Christian König <christian.koenig@....com>,
        Sasha Levin <sashal@...nel.org>, alexander.deucher@....com,
        Xinhui.Pan@....com, airlied@...il.com, daniel@...ll.ch,
        James.Zhu@....com, lijo.lazar@....com,
        pierre-eric.pelloux-prayer@....com, zhenguo.yin@....com,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.5 39/52] gpu/drm: Eliminate DRM_SCHED_PRIORITY_UNSET

From: Luben Tuikov <luben.tuikov@....com>

[ Upstream commit fa8391ad68c16716e2c06ada397e99ceed2fb647 ]

Eliminate DRM_SCHED_PRIORITY_UNSET, value of -2, whose only user was
amdgpu. Furthermore, eliminate an index bug, in that when amdgpu boots, it
calls drm_sched_entity_init() with DRM_SCHED_PRIORITY_UNSET, which uses it to
index sched->sched_rq[].

Cc: Alex Deucher <Alexander.Deucher@....com>
Cc: Christian König <christian.koenig@....com>
Signed-off-by: Luben Tuikov <luben.tuikov@....com>
Acked-by: Alex Deucher <Alexander.Deucher@....com>
Link: https://lore.kernel.org/r/20231017035656.8211-2-luben.tuikov@amd.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 3 ++-
 include/drm/gpu_scheduler.h             | 3 +--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index 092962b93064f..aac52d9754e6d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -64,7 +64,8 @@ amdgpu_ctx_to_drm_sched_prio(int32_t ctx_prio)
 {
 	switch (ctx_prio) {
 	case AMDGPU_CTX_PRIORITY_UNSET:
-		return DRM_SCHED_PRIORITY_UNSET;
+		pr_warn_once("AMD-->DRM context priority value UNSET-->NORMAL");
+		return DRM_SCHED_PRIORITY_NORMAL;
 
 	case AMDGPU_CTX_PRIORITY_VERY_LOW:
 		return DRM_SCHED_PRIORITY_MIN;
diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
index f9544d9b670d3..ac65f0626cfc9 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -68,8 +68,7 @@ enum drm_sched_priority {
 	DRM_SCHED_PRIORITY_HIGH,
 	DRM_SCHED_PRIORITY_KERNEL,
 
-	DRM_SCHED_PRIORITY_COUNT,
-	DRM_SCHED_PRIORITY_UNSET = -2
+	DRM_SCHED_PRIORITY_COUNT
 };
 
 /* Used to chose between FIFO and RR jobs scheduling */
-- 
2.42.0