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以Find x3 pro设备树文件为例分析：https://github.com/oppo-source/android_kernel_modules_and_devicetree_oppo_sm83

1. kgsl_driver定义 2. kgsl_driver初始化 3. kgsl_fops 3.1 kgsl_open 3.2 adreno_device_private_create 3.2.1

1. kgsl_ioctl_gpu_command 1.1 kgsl_gpu_command 1.2 kgsl_drawobj 1.3 kgsl_drawobj_cmd 2. _process_com

1. kgsl_gpumem_alloc 2. kgsl_ioctl_gpumem_alloc 2.1 kgsl_mem_entry 2.1.1 kgsl_memdesc 2.1.2 kgsl_mem

1. kgsl_drawctxt_create 2. adreno_drawctxt_create 2.1 adreno_context 2.1.1 kgsl_context 2.1.2 kgsl_p

1. kgsl_mmu_probe 1.1 kgsl_mmu 1.1.1 kgsl_mmu_ops 1.1.2 kgsl_iommu 2. kgsl_iommu_probe 2.1 kgsl_iomm

1. kgsl_probe_page_pools 2. kgsl_pool_cache_init 3. kgsl_of_parse_mempool 3.1 kgsl_pool_reserve_page

static const struct kgsl_ioctl kgsl_ioctl_funcs[] = { KGSL_IOCTL_FUNC(IOCTL_KGSL_DEVICE_GETPROPERTY

1. memcg_stock_pcp 2. mem_cgroup_try_charge 2.1 try_charge 2.2 consume_stock 2.3 page_counter_try_ch