Documentation/ABI/testing/sysfs-kernel-irq

   1 What:           /sys/kernel/irq
   2 Date:           September 2016
   3 KernelVersion:  4.9
   4 Contact:        Craig Gallek <kraig@google.com>
   5 Description:    Directory containing information about the system's IRQs.
   6                 Specifically, data from the associated struct irq_desc.
   7                 The information here is similar to that in /proc/interrupts
   8                 but in a more machine-friendly format.  This directory contains
   9                 one subdirectory for each Linux IRQ number.
  10
  11 What:           /sys/kernel/irq/<irq>/actions
  12 Date:           September 2016
  13 KernelVersion:  4.9
  14 Contact:        Craig Gallek <kraig@google.com>
  15 Description:    The IRQ action chain.  A comma-separated list of zero or more
  16                 device names associated with this interrupt.
  17
  18 What:           /sys/kernel/irq/<irq>/chip_name
  19 Date:           September 2016
  20 KernelVersion:  4.9
  21 Contact:        Craig Gallek <kraig@google.com>
  22 Description:    Human-readable chip name supplied by the associated device
  23                 driver.
  24
  25 What:           /sys/kernel/irq/<irq>/hwirq
  26 Date:           September 2016
  27 KernelVersion:  4.9
  28 Contact:        Craig Gallek <kraig@google.com>
  29 Description:    When interrupt translation domains are used, this file contains
  30                 the underlying hardware IRQ number used for this Linux IRQ.
  31
  32 What:           /sys/kernel/irq/<irq>/name
  33 Date:           September 2016
  34 KernelVersion:  4.9
  35 Contact:        Craig Gallek <kraig@google.com>
  36 Description:    Human-readable flow handler name as defined by the irq chip
  37                 driver.
  38
  39 What:           /sys/kernel/irq/<irq>/per_cpu_count
  40 Date:           September 2016
  41 KernelVersion:  4.9
  42 Contact:        Craig Gallek <kraig@google.com>
  43 Description:    The number of times the interrupt has fired since boot.  This
  44                 is a comma-separated list of counters; one per CPU in CPU id
  45                 order.  NOTE: This file consistently shows counters for all
  46                 CPU ids.  This differs from the behavior of /proc/interrupts
  47                 which only shows counters for online CPUs.
  48
  49 What:           /sys/kernel/irq/<irq>/type
  50 Date:           September 2016
  51 KernelVersion:  4.9
  52 Contact:        Craig Gallek <kraig@google.com>
  53 Description:    The type of the interrupt.  Either the string 'level' or 'edge'.