struct_irq_desc

Langue: en

Autres versions - même langue

Version: October 2010 (fedora - 01/12/10)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

struct_irq_desc - interrupt descriptor

SYNOPSIS

 struct irq_desc {
   unsigned int irq;
   struct timer_rand_state * timer_rand_state;
   unsigned int * kstat_irqs;
 #ifdef CONFIG_INTR_REMAP
   struct irq_2_iommu * irq_2_iommu;
 #endif
   irq_flow_handler_t handle_irq;
   struct irq_chip * chip;
   struct msi_desc * msi_desc;
   void * handler_data;
   void * chip_data;
   struct irqaction * action;
   unsigned int status;
   unsigned int depth;
   unsigned int wake_depth;
   unsigned int irq_count;
   unsigned long last_unhandled;
   unsigned int irqs_unhandled;
   raw_spinlock_t lock;
 #ifdef CONFIG_SMP
   cpumask_var_t affinity;
   unsigned int node;
 #ifdef CONFIG_GENERIC_PENDING_IRQ
   cpumask_var_t pending_mask;
 #endif
 #endif
   atomic_t threads_active;
   wait_queue_head_t wait_for_threads;
 #ifdef CONFIG_PROC_FS
   struct proc_dir_entry * dir;
 #endif
   const char * name;
 };

MEMBERS

irq

interrupt number for this descriptor

timer_rand_state

pointer to timer rand state struct

kstat_irqs

irq stats per cpu

irq_2_iommu

iommu with this irq

handle_irq

highlevel irq-events handler [if NULL, __do_IRQ]

chip

low level interrupt hardware access

msi_desc

MSI descriptor

handler_data

per-IRQ data for the irq_chip methods

chip_data

platform-specific per-chip private data for the chip methods, to allow shared chip implementations

action

the irq action chain

status

status information

depth

disable-depth, for nested irq_disable calls

wake_depth

enable depth, for multiple set_irq_wake callers

irq_count

stats field to detect stalled irqs

last_unhandled

aging timer for unhandled count

irqs_unhandled

stats field for spurious unhandled interrupts

lock

locking for SMP

affinity

IRQ affinity on SMP

node

node index useful for balancing

pending_mask

pending rebalanced interrupts

threads_active

number of irqaction threads currently running

wait_for_threads

wait queue for sync_irq to wait for threaded handlers

dir

/proc/irq/ procfs entry

name

flow handler name for /proc/interrupts output

AUTHORS

Thomas Gleixner <tglx@linutronix.de>

Author.

Ingo Molnar <mingo@elte.hu>

Author.