| STRUCT IRQ_DESC(9) | Structures | STRUCT IRQ_DESC(9) |
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;
spinlock_t lock;
#ifdef CONFIG_SMP
cpumask_var_t affinity;
struct irq_affinity_notify * affinity_notify;
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
affinity_notify
context for notification of affinity changes
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.
COPYRIGHT¶
| April 2023 | Kernel Hackers Manual 2.6. |