--- /dev/null
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright 2023 Broadcom
+
+import gdb
+
+from linux import constants
+from linux import cpus
+from linux import utils
+from linux import radixtree
+
+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, irq):
+ text = ""
+
+ desc = radixtree.lookup(gdb.parse_and_eval("&irq_desc_tree"), irq)
+ if desc is None:
+ return text
+
+ desc = desc.cast(irq_desc_type.get_type())
+ if desc is None:
+ 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)
+
+ 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)
+ 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 += " %8s" % (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, field, desc):
+ irq_stat = gdb.parse_and_eval("&irq_stat")
+ text = "%*s: " % (prec, pfx)
+ for cpu in cpus.each_online_cpu():
+ stat = cpus.per_cpu(irq_stat, cpu)
+ text += "%10u " % (stat[field])
+ text += " %s\n" % (desc)
+ return text
+
+def x86_show_mce(prec, var, pfx, desc):
+ pvar = gdb.parse_and_eval(var)
+ text = "%*s: " % (prec, pfx)
+ for cpu in cpus.each_online_cpu():
+ text += "%10u " % (cpus.per_cpu(pvar, cpu))
+ text += " %s\n" % (desc)
+ return text
+
+def x86_show_interupts(prec):
+ text = x86_show_irqstat(prec, "NMI", '__nmi_count', 'Non-maskable interrupts')
+
+ if constants.LX_CONFIG_X86_LOCAL_APIC:
+ text += x86_show_irqstat(prec, "LOC", 'apic_timer_irqs', "Local timer interrupts")
+ text += x86_show_irqstat(prec, "SPU", 'irq_spurious_count', "Spurious interrupts")
+ text += x86_show_irqstat(prec, "PMI", 'apic_perf_irqs', "Performance monitoring interrupts")
+ text += x86_show_irqstat(prec, "IWI", 'apic_irq_work_irqs', "IRQ work interrupts")
+ text += x86_show_irqstat(prec, "RTR", 'icr_read_retry_count', "APIC ICR read retries")
+ if utils.gdb_eval_or_none("x86_platform_ipi_callback") is not None:
+ text += x86_show_irqstat(prec, "PLT", 'x86_platform_ipis', "Platform interrupts")
+
+ if constants.LX_CONFIG_SMP:
+ text += x86_show_irqstat(prec, "RES", 'irq_resched_count', "Rescheduling interrupts")
+ text += x86_show_irqstat(prec, "CAL", 'irq_call_count', "Function call interrupts")
+ text += x86_show_irqstat(prec, "TLB", 'irq_tlb_count', "TLB shootdowns")
+
+ if constants.LX_CONFIG_X86_THERMAL_VECTOR:
+ text += x86_show_irqstat(prec, "TRM", 'irq_thermal_count', "Thermal events interrupts")
+
+ if constants.LX_CONFIG_X86_MCE_THRESHOLD:
+ text += x86_show_irqstat(prec, "THR", 'irq_threshold_count', "Threshold APIC interrupts")
+
+ if constants.LX_CONFIG_X86_MCE_AMD:
+ text += x86_show_irqstat(prec, "DFR", 'irq_deferred_error_count', "Deferred Error APIC interrupts")
+
+ if constants.LX_CONFIG_X86_MCE:
+ text += x86_show_mce(prec, "&mce_exception_count", "MCE", "Machine check exceptions")
+ text == x86_show_mce(prec, "&mce_poll_count", "MCP", "Machine check polls")
+
+ text += show_irq_err_count(prec)
+
+ if constants.LX_CONFIG_X86_IO_APIC:
+ cnt = utils.gdb_eval_or_none("irq_mis_count")
+ if cnt is not None:
+ text += "%*s: %10u\n" % (prec, "MIS", cnt['counter'])
+
+ if constants.LX_CONFIG_HAVE_KVM:
+ text += x86_show_irqstat(prec, "PIN", 'kvm_posted_intr_ipis', 'Posted-interrupt notification event')
+ text += x86_show_irqstat(prec, "NPI", 'kvm_posted_intr_nested_ipis', 'Nested posted-interrupt event')
+ text += x86_show_irqstat(prec, "PIW", 'kvm_posted_intr_wakeup_ipis', 'Posted-interrupt wakeup event')
+
+ 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
+
+ if prec >= 4:
+ sep = " "
+ else:
+ sep = ""
+
+ for ipi in range(nr_ipi):
+ text += "%*s%u:%s" % (prec - 1, "IPI", ipi, sep)
+ 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))
+ text += " %s" % (ipi_types[ipi].string())
+ text += "\n"
+ return text
+
+def aarch64_show_interrupts(prec):
+ 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("nr_irqs")
+ prec = 3
+ j = 1000
+ while prec < 10 and j <= nr_irqs:
+ prec += 1
+ j *= 10
+
+ 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("&irq_desc_tree") is None:
+ return
+
+ for irq in range(nr_irqs):
+ gdb.write(show_irq_desc(prec, irq))
+ gdb.write(arch_show_interrupts(prec))
+
+
+LxInterruptList()
projects / platform / kernel / linux-starfive.git / commitdiff