github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-28 01:55:51 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

scripts/gdb: Update x86 interrupts to the array based storage

Browse Source 
x86 changed the interrupt statistics from a struct with individual members
to an counter array. It also provides a corresponding info array with the
strings for prefix and description and an indicator to skip the entry.

Update the already out of sync GDB script to use the counter and the info
array, which keeps the GDB script in sync automatically.

Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20260517194931.442613033@kernel.org
This commit is contained in:
Thomas Gleixner 2026-05-17 22:02:04 +02:00
parent d6b70b16b4
commit cca5e6fa79
1 changed files with 18 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

71
scripts/gdb/linux/interrupts.py
View File

@ -48,7 +48,7 @@ def show_irq_desc(prec, irq):
count = cpus.per_cpu(desc['kstat_irqs'], cpu)['cnt']
else:
count = 0
text += "%10u" % (count)
text += "%10u " % (count)
name = "None"
if desc['irq_data']['chip']:
@ -58,7 +58,7 @@ def show_irq_desc(prec, irq):
else:
name = "-"
text += " %8s" % (name)
text += " %-8s" % (name)
if desc['irq_data']['domain']:
text += " %*lu" % (prec, desc['irq_data']['hwirq'])
@ -97,64 +97,29 @@ def show_irq_err_count(prec):
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")
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[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).dereference())
text += " %s\n" % (desc)
text += "%10u " % (stat.dereference())
text += desc
return text
def x86_show_interupts(prec):
text = x86_show_irqstat(prec, "NMI", '__nmi_count', 'Non-maskable interrupts')
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)
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')
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