This series introduces support for super pages in V3D. The V3D MMU has support for 1MB pages, called super pages, which is currently not used. Therefore, this patchset has the intention to enable super pages in V3D. The advantage of enabling super pages size is that if any entry for a page within a super page is cached in the MMU, it will be used for translation of all virtual addresses in the range of that super pages without requiring fetching any other entries. Super pages essentially means a slightly better performance for users, especially in applications with high memory requirements (e.g. applications that uses multiple large BOs). Using a Raspberry Pi 4 (with a PAGE_SIZE=4KB downstream kernel), when running traces from multiple applications, we were able to see the following improvements: fps_avg helped: warzone2100.70secs.1024x768.trace: 1.81 -> 2.56 (41.82%) fps_avg helped: warzone2100.30secs.1024x768.trace: 2.00 -> 2.39 (19.62%) fps_avg helped: quake2-gl1.4-1280x720.trace: 35.01 -> 36.57 (4.47%) fps_avg helped: supertuxkart-menus_1024x768.trace: 120.75 -> 125.50 (3.93%) fps_avg helped: quake2-gles3-1280x720.trace: 62.69 -> 64.29 (2.55%) fps_avg helped: ue4_shooter_game_shooting_low_quality_640x480.gfxr: 26.13 -> 26.75 (2.39%) fps_avg helped: vkQuake_capture_frames_1_through_1200_1280x720.gfxr: 60.35 -> 61.36 (1.67%) fps_avg helped: ue4_sun_temple_640x480.gfxr: 24.60 -> 24.94 (1.40%) fps_avg helped: ue4_shooter_game_shooting_high_quality_640x480.gfxr: 23.07 -> 23.34 (1.15%) fps_avg helped: serious_sam_trace02_1280x720.gfxr: 47.44 -> 47.74 (0.63%) fps_avg helped: ue4_shooter_game_high_quality_640x480.gfxr: 18.91 -> 19.02 (0.59%) Using a Raspberry Pi 5 (with a PAGE_SIZE=16KB downstream kernel), when running traces from multiple applications, we were able to see the following improvements: fps_avg helped: warzone2100.30secs.1024x768.trace: 3.60 -> 4.49 (24.72%) fps_avg helped: sponza_demo02_800x600.gfxr: 46.33 -> 49.34 (6.49%) fps_avg helped: quake3e_capture_frames_1_through_1800_1920x1080.gfxr: 155.70 -> 165.71 (6.43%) fps_avg helped: gl-117-1024x768.trace: 31.82 -> 33.85 (6.41%) fps_avg helped: supertuxkart-menus_1024x768.trace: 287.80 -> 303.80 (5.56%) fps_avg helped: ue4_shooter_game_shooting_low_quality_640x480.gfxr: 45.27 -> 47.30 (4.49%) fps_avg helped: sponza_demo01_800x600.gfxr: 42.05 -> 43.68 (3.89%) fps_avg helped: supertuxkart-racing_1024x768.trace: 19.94 -> 20.59 (3.26%) fps_avg helped: vkQuake_capture_frames_1_through_1200_1280x720.gfxr: 135.19 -> 139.45 (3.15%) fps_avg helped: quake2-gles3-1280x720.trace: 151.71 -> 156.13 (2.92%) fps_avg helped: ue4_shooter_game_high_quality_640x480.gfxr: 30.28 -> 31.05 (2.54%) fps_avg helped: rbdoom-3-bfg_640x480.gfxr: 31.52 -> 32.30 (2.49%) fps_avg helped: quake3e_capture_frames_1800_through_2400_1920x1080.gfxr: 157.29 -> 160.35 (1.94%) fps_avg helped: quake3e-1280x720.trace: 230.48 -> 234.51 (1.75%) fps_avg helped: ue4_shooter_game_shooting_high_quality_640x480.gfxr: 49.67 -> 50.46 (1.60%) fps_avg helped: ue4_sun_temple_640x480.gfxr: 39.70 -> 40.23 (1.34%) This series also introduces changes in the GEM helpers, in order to enable V3D to have a separated mountpoint for shmem GEM objects. Any feedback from the community about the changes in the GEM helpers is welcomed! Best Regards, - Maíra Maíra Canal (5): drm/v3d: Fix return if scheduler initialization fails drm/gem: Add a mountpoint parameter to drm_gem_object_init() drm/v3d: Introduce gemfs drm/gem: Create shmem GEM object in a given mountpoint drm/v3d: Enable super pages drivers/gpu/drm/armada/armada_gem.c | 2 +- drivers/gpu/drm/drm_gem.c | 12 ++++- drivers/gpu/drm/drm_gem_dma_helper.c | 2 +- drivers/gpu/drm/drm_gem_shmem_helper.c | 30 +++++++++-- drivers/gpu/drm/drm_gem_vram_helper.c | 2 +- drivers/gpu/drm/etnaviv/etnaviv_gem.c | 2 +- drivers/gpu/drm/exynos/exynos_drm_gem.c | 2 +- drivers/gpu/drm/gma500/gem.c | 2 +- drivers/gpu/drm/loongson/lsdc_ttm.c | 2 +- drivers/gpu/drm/mediatek/mtk_drm_gem.c | 2 +- drivers/gpu/drm/msm/msm_gem.c | 2 +- drivers/gpu/drm/nouveau/nouveau_gem.c | 2 +- drivers/gpu/drm/nouveau/nouveau_prime.c | 2 +- drivers/gpu/drm/omapdrm/omap_gem.c | 2 +- drivers/gpu/drm/qxl/qxl_object.c | 2 +- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 2 +- drivers/gpu/drm/tegra/gem.c | 2 +- drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c | 2 +- drivers/gpu/drm/v3d/Makefile | 3 +- drivers/gpu/drm/v3d/v3d_bo.c | 19 ++++++- drivers/gpu/drm/v3d/v3d_drv.c | 7 +++ drivers/gpu/drm/v3d/v3d_drv.h | 15 +++++- drivers/gpu/drm/v3d/v3d_gem.c | 6 ++- drivers/gpu/drm/v3d/v3d_gemfs.c | 52 +++++++++++++++++++ drivers/gpu/drm/v3d/v3d_mmu.c | 24 ++++++++- drivers/gpu/drm/xen/xen_drm_front_gem.c | 2 +- include/drm/drm_gem.h | 3 +- include/drm/drm_gem_shmem_helper.h | 3 ++ 28 files changed, 176 insertions(+), 32 deletions(-) create mode 100644 drivers/gpu/drm/v3d/v3d_gemfs.c -- 2.43.0
