On Tue, Oct 15, 2024 at 01:11:57PM +0000, David Disseldorp wrote: > There are a number of stack, heap and data-segment buffers which are > unnecessary for initramfs unpacking. This patchset attempts to remove > them by: > - parsing cpio hex strings in place, instead of copying them for > nul-termination. (Patches 1 & 2). > - reusing a single heap buffer for cpio header, file and symlink paths, > instead of three separate buffers. (Patches 3 & 4). > - reusing the heap-allocated cpio buffer across both builtin and > bootloader-provided unpack attempts. (Patch 5). > - reusing the heap-allocated cpio buffer for error messages on > FSM-exit, instead of a data-segment buffer. (Patch 6). > > I've flagged this as an RFC as I'd like to improve the commit messages > and also provide more thorough testing, likely via kunit / kselftest > integration. Umm... An obvious question: what's the point? Reducing the amount of temporary allocations (and not particularly large ones, at that) done during early boot and freed before we run anything in user mode?
