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.
Showing the changes to scripts/gdb/linux/xarray.py (1 of 4 files). Show all
Unified · Split
| @@ -0,0 +1,28 @@ | |||
| 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) | ||