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a02b0cde8e
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.
Link: https://lkml.kernel.org/r/20250625021020.1056930-1-florian.fainelli@broadcom.com
Fixes: 721255b9826b ("genirq: Use a maple tree for interrupt descriptor management")
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: Shanker Donthineni <sdonthineni@nvidia.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
29 lines
636 B
Python
29 lines
636 B
Python
# SPDX-License-Identifier: GPL-2.0
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#
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# Xarray helpers
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#
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# Copyright (c) 2025 Broadcom
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#
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# Authors:
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# Florian Fainelli <florian.fainelli@broadcom.com>
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import gdb
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from linux import utils
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from linux import constants
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def xa_is_internal(entry):
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ulong_type = utils.get_ulong_type()
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return ((entry.cast(ulong_type) & 3) == 2)
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def xa_mk_internal(v):
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return ((v << 2) | 2)
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def xa_is_zero(entry):
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ulong_type = utils.get_ulong_type()
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return entry.cast(ulong_type) == xa_mk_internal(257)
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def xa_is_node(entry):
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ulong_type = utils.get_ulong_type()
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return xa_is_internal(entry) and (entry.cast(ulong_type) > 4096)
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