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[73.37.105.206]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39d95092c06sm11060515a91.4.2026.09.12.07.59.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Sep 2026 07:59:24 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.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 v2 1/2] drm/msm: Enable THP for GEM buffers Date: Sat, 12 Sep 2026 07:59:21 -0700 Message-ID: <20260912145922.24115-1-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: A0hVr6EQZnFeEt9igUM7XVTAwTSY8IV8 X-Proofpoint-GUID: A0hVr6EQZnFeEt9igUM7XVTAwTSY8IV8 X-Authority-Analysis: v=2.4 cv=c5Y+0h9l c=1 sm=1 tr=0 ts=6aa568ce cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=19Wyn7e3V/0aNffMjNCMQw==:17 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=bo7bELecpVJEBXAwH0gA:9 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTEyMDIxNyBTYWx0ZWRfXyKwdDyoIfBQP kN6PpPgJMT0EsCU1174fZ3vpLdR3kUiMNnxn96pOtQFUCKPPZMtWpnxaVQXaFdD1h8+v7NXGVcX y+zLprJtCxc2yto4vIPbBsyNoKIp6jS0FCJF1Xl1zPKZXVjqWOEY5wDVL/L64pSRMVekgEulzEM PXifvv+PBfNUNCCIcTMarEbiMCeCFaMfzz+U4clYzmedlm/ijJD8W7GlpiasT3IXL2t+Qelkc6Z qCQLzwyn21b0Upj8uahQfWRVbgdw4tydkq4WojDxrbKmTKLdgg5l0tpwkp7MawNi4maBpxOAsKU JVLTIujzym7Z/ZUbODNiHK2q7CIp35EYgdB34AxferKVVyMzlfY5W8qthH7tIHKI5KvvRJRe8OL T9vDEnDcoSu5LlTcP6AG/CwIersbxRVIwkLlzdvm0vphdIemfUrY7aZQ5bhG3rDZ3J/4NWz42Ng QHbydBGAHzYQhRWU6FQ== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTEyMDIxNyBTYWx0ZWRfX1Jxp7OEokohh z8SmSuL4MjwOoCBc+ypY3zCknClRZEARLxpEdDkK4yOEO96AuVsKsuSuJLB4n0a5PP+vu1n6VqT +KnfxMEcPwnR9bYSUoIA7kM3i6Eob0s= 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=2026-09-12_05,2026-09-11_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 bulkscore=0 impostorscore=0 suspectscore=0 malwarescore=0 phishscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609120217 More than 2x speedup on darktable benchmark which was bottlenecked on page allocation/pinning. Signed-off-by: Rob Clark --- v2: Initialize THP earlier drivers/gpu/drm/msm/msm_drv.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 73d99bde26f1..581903ccd5e6 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -58,9 +58,31 @@ 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)"); +#else +#define transparent_hugepage false +#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 (!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; @@ -161,6 +183,8 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv, if (ret) goto err_msm_uninit; + msm_gem_thp_init(ddev); + if (priv->kms_init) { ret = msm_drm_kms_init(dev, drv); if (ret) -- 2.55.0