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[73.37.105.206]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cc45515436asm10903a12.3.2026.09.03.11.37.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Sep 2026 11:37:30 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , linux-kernel@vger.kernel.org (open list) Subject: [PATCH 1/2] drm/msm: Enable THP for GEM buffers Date: Thu, 3 Sep 2026 11:37:24 -0700 Message-ID: <20260903183725.15835-1-robin.clark@oss.qualcomm.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: toLJWVzwK5OEBH8ozlqXsNthzB8Fy4U2 X-Proofpoint-GUID: toLJWVzwK5OEBH8ozlqXsNthzB8Fy4U2 X-Authority-Analysis: v=2.4 cv=C8vZDwP+ c=1 sm=1 tr=0 ts=6a99be6c cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=19Wyn7e3V/0aNffMjNCMQw==:17 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=bo7bELecpVJEBXAwH0gA:9 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTAzMDE2MyBTYWx0ZWRfX1m9UCSzeiUji 04uJ9SUa2FTjdAE4uvMloVtoO1nLG3+f1tl85BwsvRrkQWn4zgFF4G1TdAw5Jn8tSA6RGzmoJKN MbMEE2/prfcseZkCQFQME3xq//oNt83wpV1J3O3ttrTo0rpMMESYDH317IipQFj2kQZ4KSkS1jj lAWu+eTnghL4k/QjptMAwp30ip9lYUOhEStkAHGzWPSH8P5gswLnsOGQZHnXJdHyGjodIYNbKPn je6JsgEZbqX+NrDGoOHg4iSNbVZ1r7+6V60F/Nq8spCYVjqSPjx7CQ7RjWjDBVO9uULJoMvjxju O127W07Idf+aizspGbyEd6+5wMaMdok0p2qs6EKkCmYqRPAxPVrkcHCP+RFF4RFuaaRw4XkYRUb NIh5jMhwnYg9S1pUaZuihgOQgWyEq4zbzfDrkYDr/U1TIOHD7de3O0CC9vXq1LPb54UeyWQBUe1 N0foPTuHG6DHNzBaPIA== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTAzMDE2MyBTYWx0ZWRfX9q27c5Eq3QAB +JG0Tf4fY9gijAOd1NX49PDYLE8vdEXwtSWONfTmYCYtu43zcixQeIw0tD9JN3X4xKIUUb/liSB Gbi+ZUSHLCXNzFEoeeygHxFY63hl9B4= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-03_05,2026-09-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 bulkscore=0 adultscore=0 suspectscore=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 spamscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609030163 More than 2x speedup on darktable benchmark which was bottlenecked on page allocation/pinning. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 73d99bde26f1..8129e7d229d9 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -58,9 +58,29 @@ static bool separate_gpu_kms; MODULE_PARM_DESC(separate_gpu_drm, "Use separate DRM device for the GPU (0=single DRM device for both GPU and display (default), 1=two DRM devices)"); module_param(separate_gpu_kms, bool, 0400); +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +static bool transparent_hugepage = true; +module_param(transparent_hugepage, bool, 0400); +MODULE_PARM_DESC(transparent_hugepage, "Use a dedicated tmpfs mount point with Transparent Hugepage enabled (true = default)"); +#endif + DECLARE_FAULT_ATTR(fail_gem_alloc); DECLARE_FAULT_ATTR(fail_gem_iova); +static void msm_gem_thp_init(struct drm_device *dev) +{ + int err; + + if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && !transparent_hugepage) + return; + + err = drm_gem_huge_mnt_create(dev, "within_size"); + if (drm_gem_get_huge_mnt(dev)) + drm_info(dev, "Using Transparent Hugepage\n"); + else if (err) + drm_warn(dev, "Can't use Transparent Hugepage (%d)\n", err); +} + bool msm_gpu_no_components(void) { return separate_gpu_kms; @@ -178,6 +198,8 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv, if (priv->kms_init) msm_drm_kms_post_init(dev); + msm_gem_thp_init(ddev); + return 0; err_msm_uninit: -- 2.55.0