The Linux Kernel Tree About To Hit 40 Million Lines, AMD Driver Above 6 Million Lines

The Linux Kernel Tree About To Hit 40 Million Lines, AMD Driver Above 6 Million Lines Written by Michael Larabel in Linux Kernel on 26 April 2026 at 10:48 AM EDT. 3 Comments Ahead of the Linux 7.1-rc1 kernel release due out later today for closing the Linux 7.1 merge window, I was curious if all the code removals would lead to a negative change in line count over Linux 7.0. The removals were not enough and Linux 7.1 Git is fast approaching 40 million lines. With Linux 7.1 removing ISDN, ham radio, and other old network driver code that yielded a 138k lines of code reduction, I was curious how that would impact the line count for Linux Git. Plus removing some obsolete PCMCIA drivers also happened for Linux 7.1 as did removing some PCI drivers and beginning to remove support for Russia's Baikal CPUs. Linux 7.1 also began decommissioning of the Intel 486 CPU support but that doesn't have much impact on the line count yet, more removals around now useless i486 bits will come in future kernel cycles. The Git repository for Linux v7.0 came in at 39,621,378 lines between 4,991,874 blank lines, 4,737,829 lines of code comments, and then 29,891,675 lines of detected code as measured by the cloc program. Even with the removals, Linux 7.1 is still growing larger. Linux Git as of this morning measured by cloc came in at 39,880,636 lines -- or roughly 259k lines of code added this merge window even with all the removals that took place. That 39.8M lines is between 5,015,790 blank lines, 4,775,889 code comments, and 30,088,957 lines as measured by cloc. So Linux 7.1 crossed the threshold of 30 million lines of detected code while with the blank lines and code comments is fast approaching 40 million lines. For the Linux 7.2 cycle is presumably when it will breach 40 million lines in total. While at it, I also took a read of the current size of the drivers/gpu/drm/amd area with AMDGPU and AMDKFD along with associated code like the display core (DC) and all the auto-generated header files for each GPU. In Linux 7.0 the modern AMD kernel graphics driver stack was at 6,049,235 lines and now rose to 6,162,946 in the current Linux 7.1 Git state. freestar.config.enabled_slots.push({ placementName: "phoronix_leaderboard_btf", slotId: "phoronix_leaderboard_btf" }); 3 Comments

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