In commit 721255b9826b ("genirq: Use a maple tree for interrupt descriptor management"), the irq_desc_tree was replaced with a sparse_irqs tree using a maple tree structure. Since the script looked for the irq_desc_tree symbol which is no longer available, no interrupts would be printed and the script output would not be useful anymore. In addition to looking up the correct symbol (sparse_irqs), a new module (mapletree.py) is added whose mtree_load() implementation is largely copied after the C version and uses the same variable and intermediate function names wherever possible to ensure that both the C and Python version be updated in the future. This restores the scripts' output to match that of /proc/interrupts.
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| 1 | +# SPDX-License-Identifier: GPL-2.0 | |
| 2 | +# | |
| 3 | +# Xarray helpers | |
| 4 | +# | |
| 5 | +# Copyright (c) 2025 Broadcom | |
| 6 | +# | |
| 7 | +# Authors: | |
| 8 | +# Florian Fainelli <florian.fainelli@broadcom.com> | |
| 9 | + | |
| 10 | +import gdb | |
| 11 | + | |
| 12 | +from linux import utils | |
| 13 | +from linux import constants | |
| 14 | + | |
| 15 | +def xa_is_internal(entry): | |
| 16 | + ulong_type = utils.get_ulong_type() | |
| 17 | + return ((entry.cast(ulong_type) & 3) == 2) | |
| 18 | + | |
| 19 | +def xa_mk_internal(v): | |
| 20 | + return ((v << 2) | 2) | |
| 21 | + | |
| 22 | +def xa_is_zero(entry): | |
| 23 | + ulong_type = utils.get_ulong_type() | |
| 24 | + return entry.cast(ulong_type) == xa_mk_internal(257) | |
| 25 | + | |
| 26 | +def xa_is_node(entry): | |
| 27 | + ulong_type = utils.get_ulong_type() | |
| 28 | + return xa_is_internal(entry) and (entry.cast(ulong_type) > 4096) | |