isp_kernel_buffer_free(9)

💅 isp_kernel_buffer_free(9) 💅

hiiii bestie, welcome to the Kernel API Manual — this page is all about isp_kernel_buffer_free, and it's giving "cleanup era" energy. No cap, it's a tiny function, but the details matter, so let's get into it. 🌸

✨ NAME ✨

isp_kernel_buffer_free — free isp kernel buffer object (BO) 🎀

🦋 SYNOPSIS 🦋

void isp_kernel_buffer_free (void **buf_obj , u64 *gpu_addr , void **cpu_addr );

💖 ARGUMENTS 💖

• buf_obj — the amdgpu isp user BO to free. This is the one getting the goodbye treatment, bestie. 💅
• gpu_addr — the GPU addr of the isp kernel BO. 🖥️
• cpu_addr — the CPU addr of the isp kernel BO. 🧠

🌈 DESCRIPTION 🌈

okay so the main character move here is that it unmaps and unpin a isp kernel BO — yes, that's the phrasing, and we respect it. literally unmapping and unpinning, periodt. 😭

This function is exported so the V4L2 isp device that's external to the drm device can free the kernel BO. it's giving "sharing is caring, but for cleanup." 🫶

🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/amd/amdgpu/amdgpu_isp.c
• isp_hw_init(9)
• isp_hw_fini(9)
• isp_user_buffer_alloc(9)
• isp_user_buffer_free(9)
• isp_kernel_buffer_alloc(9)

byeee bestie — this iconic page is from ./drivers/gpu/drm/amd/amdgpu, dated October 2026, and it's isp_kernel_buffer_free(9) 💅✨