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Patch series "scripts/gdb/symbols: make BPF debug info available to GDB", v2. This series greatly simplifies debugging BPF progs when using QEMU gdbstub by providing symbol names, sizes, and line numbers to GDB. Patch 1 adds radix tree iteration, which is necessary for parsing prog_idr. Patch 2 is the actual implementation; its description contains some details on how to use this. This patch (of 2): Add a function and a command to iterate over radix tree contents. Duplicate the C implementation in Python, but drop support for tagging. Link: https://lkml.kernel.org/r/20251106124600.86736-1-iii@linux.ibm.com Link: https://lkml.kernel.org/r/20251106124600.86736-2-iii@linux.ibm.com Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Daniel Borkman <daniel@iogearbox.net> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Kieran Bingham <kbingham@kernel.org> Cc: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>