What: /sys/kernel/irq
Date: September 2016
KernelVersion: 4.9
Contact: Craig Gallek <kraig@google.com>
Description: Directory containing information about the system's IRQs.
Specifically, data from the associated struct irq_desc.
The information here is similar to that in /proc/interrupts
but in a more machine-friendly format. This directory contains
one subdirectory for each Linux IRQ number.
What: /sys/kernel/irq/<irq>/actions
Date: September 2016
KernelVersion: 4.9
Contact: Craig Gallek <kraig@google.com>
Description: The IRQ action chain. A comma-separated list of zero or more
device names associated with this interrupt.
What: /sys/kernel/irq/<irq>/chip_name
Date: September 2016
KernelVersion: 4.9
Contact: Craig Gallek <kraig@google.com>
Description: Human-readable chip name supplied by the associated device
driver.
What: /sys/kernel/irq/<irq>/hwirq
Date: September 2016
KernelVersion: 4.9
Contact: Craig Gallek <kraig@google.com>
Description: When interrupt translation domains are used, this file contains
the underlying hardware IRQ number used forthis Linux IRQ.
What: /sys/kernel/irq/<irq>/name
Date: September 2016
KernelVersion: 4.9
Contact: Craig Gallek <kraig@google.com>
Description: Human-readable flow handler name as defined by the irq chip
driver.
What: /sys/kernel/irq/<irq>/per_cpu_count
Date: September 2016
KernelVersion: 4.9
Contact: Craig Gallek <kraig@google.com>
Description: The number of times the interrupt has fired since boot. This
is a comma-separated list of counters; one per CPU in CPU id
order. NOTE: This file consistently shows counters for all
CPU ids. This differs from the behavior of /proc/interrupts
which only shows counters for online CPUs.
What: /sys/kernel/irq/<irq>/type
Date: September 2016
KernelVersion: 4.9
Contact: Craig Gallek <kraig@google.com>
Description: The type of the interrupt. Either the string 'level'or'edge'.
What: /sys/kernel/irq/<irq>/wakeup
Date: March 2018
KernelVersion: 4.17
Contact: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Description: The wakeup state of the interrupt. Either the string 'enabled'or'disabled'.
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