On 13/08/20 14:13, Thomas Gleixner wrote: >>>> Add metricfs support for displaying percpu irq counters for x86. >>>> The top directory is /sys/kernel/debug/metricfs/irq_x86. >>>> Then there is a subdirectory for each x86-specific irq counter. >>>> For example: >>>> >>>> cat /sys/kernel/debug/metricfs/irq_x86/TLB/values >>> What is 'TLB'? I'm not aware of any vector which is named TLB. >> There's a "TLB" entry in /proc/interrupts. > It's TLB shootdowns and not TLB. Yes but it's using the shortcut name on the left of the table. > +METRICFS_ITEM(LOC, apic_timer_irqs, "Local timer interrupts"); > +METRICFS_ITEM(SPU, irq_spurious_count, "Spurious interrupts"); > +METRICFS_ITEM(PMI, apic_perf_irqs, "Performance monitoring interrupts"); > +METRICFS_ITEM(IWI, apic_irq_work_irqs, "IRQ work interrupts"); > +METRICFS_ITEM(RTR, icr_read_retry_count, "APIC ICR read retries"); > +#endif > +METRICFS_ITEM(PLT, x86_platform_ipis, "Platform interrupts"); > +#ifdef CONFIG_SMP > +METRICFS_ITEM(RES, irq_resched_count, "Rescheduling interrupts"); > +METRICFS_ITEM(CAL, irq_call_count, "Function call interrupts"); > +METRICFS_ITEM(TLB, irq_tlb_count, "TLB shootdowns"); Paolo
