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Wed, 18 Mar 2026 09:09:00 -0500 From: Alex Deucher To: CC: Alex Deucher Subject: [PATCH 11/16] drm/amdgpu/gfx9.4.3: rework kernel queue priority handling Date: Wed, 18 Mar 2026 10:08:32 -0400 Message-ID: <20260318140837.582776-11-alexander.deucher@amd.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260318140837.582776-1-alexander.deucher@amd.com> References: <20260318140837.582776-1-alexander.deucher@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MN1PEPF0000ECD8:EE_|CH8PR12MB9837:EE_ X-MS-Office365-Filtering-Correlation-Id: ee2ca50b-914b-42ec-1a11-08de84f7e975 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700016|376014|1800799024|82310400026|18002099003|22082099003|56012099003; X-Microsoft-Antispam-Message-Info: zT9epE1E5bd6cWsKbr9LBW9Vf7M+FO+7VNXX4w4gN2XT3fVxV2aM2sZx5g9i6ztRMeMKOwlHI3OVtH0eQbxYKIHUX7hxdr3DS/nV4os5wtmHY1PG2JLkXAi5EE1FNBOe0lnZJ6Hloq2o5iXbyxG81mGfSG5sydCYUgBGJrAAPLHzd68o/6rNANRwljcaMdyYH9LE1lrq7Clg16RU4GPUjTMDbTJGAd2Bt05nqZmT7OBjizhb+Eq0N8clWqeQ+5nUNkXr83dwdfJZGF5EiXFbPShEQ0RJTqkxf8pzwKzqmVtS7BaLHNpHB7ft71p9Yn6wnaCieCFpmsax+Pzy6sYOnmgJrWxo8tAkDoaI0UOv3muy/vlBbXZBAwUIz+90UK/JV4cD2E8rKnVL+DzVzIK3LOiKM9WMd6FWXk3KV5+Go6gyN50GK4GgO7Pkwr0H5XJvh6hlW7PSUjvz5K880Zzh9s+LMuvJVIKWOC1e+yfAZ8EwGPKdJsSdavcqnDSnWsUUTYHkCevStF46z7vIJYz1VPexwRFfmYy5v31zjqKY6ymEbOPcngseKV6K6VDm81ntk0lwLIG6K9RWLnAsJErP11nY+yKzvGvq0HFOXQDsH9tsb2pUmjnTECT2gnVxm08Jx9rUQ9/jV3OWm0tRl14EeMlloez06cSjN8OXb4s6If0pTBQIDXUGvcaUYpH50QGIJNx9yGGTkixAN4HV/rSb/L1bpavHzf1ZHhVEwvI2f7DSt49+FZkY4hH1ZsB4CLVUs1PSckKulICx4bAs6Eajqw== X-Forefront-Antispam-Report: CIP:165.204.84.17; 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Ip=[165.204.84.17]; Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: MN1PEPF0000ECD8.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH8PR12MB9837 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" Rather than setting a higher queue priority which could starve a lower priority queue, enable longer quantums for high priority kernel queues. This will avoid starvation, but provide longer runtime for high priority queues. Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c index d0b8fb9317201..e843793112638 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c @@ -1946,7 +1946,10 @@ static int gfx_v9_4_3_xcc_mqd_init(struct amdgpu_ring *ring, int xcc_id) tmp = RREG32_SOC15(GC, GET_INST(GC, xcc_id), regCP_HQD_QUANTUM); tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_EN, 1); tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_SCALE, 1); - tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_DURATION, 1); + if (amdgpu_gfx_is_high_priority_compute_queue(adev, ring)) + tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_DURATION, 2); + else + tmp = REG_SET_FIELD(tmp, CP_HQD_QUANTUM, QUANTUM_DURATION, 1); mqd->cp_hqd_quantum = tmp; /* map_queues packet doesn't need activate the queue, -- 2.53.0