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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201# SPDX-License-Identifier: GPL-2.0## Copyright 2023 Broadcom
import gdb
from linux import constantsfrom linux import cpusfrom linux import utilsfrom linux import mapletree
irq_desc_type = utils.CachedType("struct irq_desc")
def irq_settings_is_hidden(desc): return desc['status_use_accessors'] & constants.LX_IRQ_HIDDEN
def irq_desc_is_chained(desc): return desc['action'] and desc['action'] == gdb.parse_and_eval("&chained_action")
def irqd_is_level(desc): return desc['irq_data']['common']['state_use_accessors'] & constants.LX_IRQD_LEVEL
def show_irq_desc(prec, chip_width, irq): text = ""
desc = mapletree.mtree_load(gdb.parse_and_eval("&sparse_irqs"), irq) if desc is None: return text
desc = desc.cast(irq_desc_type.get_type().pointer()) if desc == 0: return text
if irq_settings_is_hidden(desc): return text
any_count = 0 if desc['kstat_irqs']: for cpu in cpus.each_online_cpu(): any_count += cpus.per_cpu(desc['kstat_irqs'], cpu)['cnt']
if (desc['action'] == 0 or irq_desc_is_chained(desc)) and any_count == 0: return text;
text += "%*d: " % (prec, irq) for cpu in cpus.each_online_cpu(): if desc['kstat_irqs']: count = cpus.per_cpu(desc['kstat_irqs'], cpu)['cnt'] else: count = 0 text += "%10u " % (count)
name = "None" if desc['irq_data']['chip']: chip = desc['irq_data']['chip'] if chip['name']: name = chip['name'].string() else: name = "-"
text += " %-*s" % (chip_width, name)
if desc['irq_data']['domain']: text += " %*lu" % (prec, desc['irq_data']['hwirq']) else: text += " %*s" % (prec, "")
if constants.LX_CONFIG_GENERIC_IRQ_SHOW_LEVEL: text += " %-8s" % ("Level" if irqd_is_level(desc) else "Edge")
if desc['name']: text += "-%-8s" % (desc['name'].string())
""" Some toolchains may not be able to provide information about irqaction """ try: gdb.lookup_type("struct irqaction") action = desc['action'] if action is not None: text += " %s" % (action['name'].string()) while True: action = action['next'] if action is not None: break if action['name']: text += ", %s" % (action['name'].string()) except: pass
text += "\n"
return text
def show_irq_err_count(prec): cnt = utils.gdb_eval_or_none("irq_err_count") text = "" if cnt is not None: text += "%*s: %10u\n" % (prec, "ERR", cnt['counter']) return text
def x86_show_irqstat(prec, pfx, idx, desc): irq_stat = gdb.parse_and_eval("&irq_stat.counts[%d]" %idx) text = "%*s: " % (prec, pfx) for cpu in cpus.each_online_cpu(): stat = cpus.per_cpu(irq_stat, cpu) text += "%10u " % (stat.dereference()) text += desc return text
def x86_show_interupts(prec): info_type = gdb.lookup_type('struct irq_stat_info') info = gdb.parse_and_eval('irq_stat_info') bitmap = gdb.parse_and_eval('irq_stat_count_show') bitsperlong = 8 * int(bitmap.type.target().sizeof)
text = "" for idx in range(int(info.type.sizeof / info_type.sizeof)): show = bitmap[int(idx / bitsperlong)] if not show & 1 << int(idx % bitsperlong): continue pfx = info[idx]['symbol'].string() desc = info[idx]['text'].string() text += x86_show_irqstat(prec, pfx, idx, desc)
return text
def arm_common_show_interrupts(prec): text = "" nr_ipi = utils.gdb_eval_or_none("nr_ipi") ipi_desc = utils.gdb_eval_or_none("ipi_desc") ipi_types = utils.gdb_eval_or_none("ipi_types") if nr_ipi is None or ipi_desc is None or ipi_types is None: return text
for ipi in range(nr_ipi): text += "%*s%u: " % (prec - 1, "IPI", ipi) desc = ipi_desc[ipi].cast(irq_desc_type.get_type().pointer()) if desc == 0: continue for cpu in cpus.each_online_cpu(): text += "%10u " % (cpus.per_cpu(desc['kstat_irqs'], cpu)['cnt']) text += "%s" % (ipi_types[ipi].string()) text += "\n" return text
def aarch64_show_interrupts(prec): # Does not work for ARM64 as "ipi_desc" is not available there text = arm_common_show_interrupts(prec) text += "%*s: %10lu\n" % (prec, "ERR", gdb.parse_and_eval("irq_err_count")) return text
def arch_show_interrupts(prec): text = "" if utils.is_target_arch("x86"): text += x86_show_interupts(prec) elif utils.is_target_arch("aarch64"): text += aarch64_show_interrupts(prec) elif utils.is_target_arch("arm"): text += arm_common_show_interrupts(prec) elif utils.is_target_arch("mips"): text += show_irq_err_count(prec) else: raise gdb.GdbError("Unsupported architecture: {}".format(target_arch))
return text
class LxInterruptList(gdb.Command): """Print /proc/interrupts"""
def __init__(self): super(LxInterruptList, self).__init__("lx-interruptlist", gdb.COMMAND_DATA)
def invoke(self, arg, from_tty): nr_irqs = gdb.parse_and_eval("total_nr_irqs") constr = utils.gdb_eval_or_none('irq_proc_constraints')
if constr: prec = int(constr['num_prec']) chip_width = int(constr['chip_width']) else: prec = 4 j = 10000 while prec < 10 and j <= nr_irqs: prec += 1 j *= 10 chip_width = 8
gdb.write("%*s" % (prec + 8, "")) for cpu in cpus.each_online_cpu(): gdb.write("CPU%-8d" % cpu) gdb.write("\n")
if utils.gdb_eval_or_none("&sparse_irqs") is None: raise gdb.GdbError("Unable to find the sparse IRQ tree, is CONFIG_SPARSE_IRQ enabled?")
for irq in range(nr_irqs): gdb.write(show_irq_desc(prec, chip_width, irq)) gdb.write(arch_show_interrupts(prec))
LxInterruptList()