| # 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)['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 += " %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_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)['cnt']) |
| 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() |
