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Wed, 18 Mar 2026 09:09:00 -0500 From: Alex Deucher To: CC: Alex Deucher Subject: [PATCH 10/16] drm/amdgpu/gfx9: rework kernel queue priority handling Date: Wed, 18 Mar 2026 10:08:31 -0400 Message-ID: <20260318140837.582776-10-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_|CH1PR12MB9693:EE_ X-MS-Office365-Filtering-Correlation-Id: e80166fe-587d-4ba1-019f-08de84f7e931 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700016|376014|82310400026|1800799024|18002099003|22082099003|56012099003; X-Microsoft-Antispam-Message-Info: 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 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: CH1PR12MB9693 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_0.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 2eb32f92a77c4..aaf75c82b1bf5 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -3670,7 +3670,10 @@ static int gfx_v9_0_mqd_init(struct amdgpu_ring *ring) tmp = RREG32_SOC15(GC, 0, mmCP_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